Digital Radio Technical Specifications
Minimum Specification for FM, DAB and DAB+ domestic digital radio receivers
Minimum Specification for FM, DAB and DAB+ in-vehicle digital radio receivers
Technology Provider Test Specification
Per Product Test Specification
Change requests to this document.
Please see below all change requests which have been made to this document since its initial
publication in April 2013.
For further information on these change requests please see Appendix E.
If you would like to make a change request to these documents please see here:
www.getdigitalradio.com/industry. If you have any further questions please email
tickmark@digitalradiouk.com.
CR1. The Grid Network (26th March 2013)

Remove modes 2 and 4 from the DAB stream MSC.
CR2. BBC Radio (25th July 2013)


Further editorial clarification required around DLS requirements in the domestic specifications.
DLS is required for domestic receivers.
CR3. The Society for Manufacturers, Motorists and Traders (8th August 2013)


Further editorial clarification is required around DLS requirements for In-vehicle.
DLS is not required for in-vehicle receivers.
CR4. Pure Radio (4th July 2013)

Removal of references to the ensemble label as a requirement of the Minimum Specification.
CR5. Frontier Silicon (16th November 2013)

Onset of Impairment specification v 2.2.1.
a) Upgrade the Onset of Impairment (OOI) Specification in both the “Minimum Specifications”
documents– Domestic and In-Vehicle.
b) Improve the method for the Onset of Impairment (OOI) test in the “Per Product Test
Specification” document.
c) Change the ETI test stream formulation for sensitivity testing to suit the above.
d) Addition of UEP audio test.
CR6. Digital Radio UK (3rd June 2014)
Remove the following text in the per product:
A.10 Test 4 – “DRAP-Tick-Fcn-Test-4 Scan and add another ensemble”
 Objective
o To ensure that the receiver can discover another ensemble and add the new services
found to the current service list
 Method
o Turn on the receiver
o On the receiver initiate a scan
3
o

After the scan navigate to the services and confirm that the service list on the
receiver contains services: Service A, Service B and Service C and also Service D,
Service E, Service F and Service G
o Turn the receiver off
Expected results
o The receiver’s service list must contain services: Service A, Service B, Service C,
Service D, Service E, Service F and Service G
And replace it with the following text:
A.10 Test 4 – “DRAP-Tick-Fcn-Test-4 Scan and add another ensemble”
 Objective
o To ensure that the receiver can discover another ensemble and show these new
services within the service list
 Method
o Turn on the receiver
o On the receiver initiate a scan
o After the scan navigate to the services and confirm that the service list on the
receiver contains services: Service D, Service E, Service F
o Turn the receiver off
 Expected results
o The receiver’s service list must contain services: Service D, Service E, Service F
And…….
Remove the following text from the per product test:
The re-scan / re-tune feature must be able to cope with the following changes:
1. Service moves to a different multiplex
2. New multiplex launches
3. Multiplex changes its frequency
4. New Service appears
5. Service changes name
6. Service disappears
7. Multiple Instances of the same programme content with the same Service ID on different
frequencies and with varying signal levels
And replace it with the following text:
The re-scan / re-tune feature must be able to cope with the following changes:
1. Service moves to a different multiplex
2. New multiplex appears
3. Multiplex changes its frequency
4. New Service appears
5. Service changes name
6. Service disappears
7. Multiple Instances of the same programme content with the same Service ID on different
frequencies and with varying signal levels
4
CR7. Pure (5th June 2014) – NOT ACCEPTED

Change the ETI stream used for display character testing to split the long sequence of characters
into groups with spaces between them.
CR8. Pioneer, 12th September 2014 – ACCEPTED
This change request submission is based on the request of Mr. Sam, DRUK. Pioneer have already
discussed with him as technical question (T12) from Pioneer.
1.Pioneer would like to make a request to change “No interruption to service.” to “Only minor break
(1<second) of breakup” in the Valid result of Test ID 3.8.4.
FS/BBC would also like to add the change to EEP-3A from UEP-3 for this test.
2. Same as above but it is Test ID 3.9.4.
3.3.2.4, 3.2.8 and 3.8.2 are all tests that relate to falling back to primary.
Although there are no normative requirements that state that a receiver should fall back to primary
the industry accepted behaviour is that if after a reconfiguration an audio secondary is removed
then the results will be that the radio selects the audio primary if it is available
For 3.2.4 and 3.2.8 change
“The receiver falls back to the primary component of the service that the secondary component was
associated with or mute the receiver”
To read
“If the related Primary component of the same service is an audio component then the receiver falls
back to this component: if the primary component is a data component then mute the receiver”
For 3.8.2 change
“The receiver falls back to the primary component of the service that the secondary component was
associated with or mutes the receiver”
To read
“The receiver falls back to the primary component of the service that the secondary component was
associated with”
4.4.3 refers to a line break but another typo puts this as a word break in the expected results. Simply
change the word “word” to “line”
Describe the reason for the change:
1. Pioneer believes that this is typo. Technically the test condition of ID 3.8.4 is the same as ID 3.5.5
and 3.5.6 focused on bitrate changing of DAB+. Because of that, the valid result should be changed
to "Only minor break (1<second) of breakup" which is the same as ID 3.5.5 and 3.5.6. Also standard
5
car radios in the market are NOT able to output continuous sound when bitrate changes in DAB+
mode.
FS/BBC - the EEP-3A changes from UEP-3 was to correct a cut-n-paste typo
2. Pioneer believes that this is also typo. Technically the test condition of ID 3.9.4 is the same as ID
3.9.1 focused on audio parameter changing (in other words audio sampling rate changing). It
doesn’t matter whether DAB or DAB+. Because of that, the valid result should be changed to "Only
minor break (1<second) of breakup" which is the same as ID 3.9.1. Also standard car radios in the
market are NOT able to output continuous sound when audio sampling rate changes.
3. To bring the tests into line with industry accepted behaviour and remove an element of ambiguity
with the 3 test outcomes identified.
4. Amend a typo “word” should read “line”
CR9. Frontier (4th July 2014) – ACCEPTED
Change the per product ETIs and associated test documentation to




Allow, via Service labels, character support testing on automotive products that do not
implement DLS.
Add DLS formatting codes to the DLS test.
Allow service list testing using short service labels.
Add reference to Arqiva’s requested changes (to follow) to make the per product eti files more
representative of a real multiplex.
Update July 13th 2015

The ETI files updates to version 5
6
CONTENTS
1.0 Digital Radio Technical Specifications
1.1 Introduction
1.2 The tick mark
1.3 DAB radio products
1.4 The Specifications
1.5 Testing receivers in the Per Product Test Specification
1.6 Application
SPECIFICATION 1

Minimum Specifications for FM, DAB and DAB+ domestic digital radio receivers
2.0 Introduction
2.2 Purpose of this specification
3.0 Technical information
1
2
3
4
5
5.1
5.2
5.3
5.4
6
7
7.1
7.2
8
8.1
8.2
SCOPE
DEFINITIONS
REFERENCES
FREQUENCY RANGE
RF PERFORMANCE
BACKGROUND
GAUSSIAN SENSITIVITY
RAYLEIGH SENSITIVITY
RECEIVER SELECTIVITY (ADJACENT CHANNEL INTERFERENCE)
DAB AND DAB+ CHANNEL DECODING
ANALOGUE RADIO SERVICES
ANALOGUE RADIO REQUIREMENTS FOR DAB DIGITAL RADIO ADAPTERS
ANALOGUE RADIO REQUIREMENTS FOR RECEIVERS NOT PRIMARILY INTENDED TO
BE USED AS ADAPTERS
FUNCTIONAL SPECIFICATIONS
RETUNING
TEXT DISPLAY
7
9
APPENDIX ONE NOTES ON SPECIFICATIONS.
9.1
9.2
9.3
9.4
9.5
BROADCAST SIGNAL
SUB-CHANNEL DECODING
DECODING OF AUDIO
SERVICE LABEL, PROGR AMME TYPE
DYNAMIC LABELS (DLS)
SPECIFICATION 2

Minimum Specifications for FM, DAB and DAB+ In-vehicle digital radio receivers
4.0 Introduction
4.1 Purpose of the specification
5.0 Technical information
10 SCOPE
11 RF PERFORMANCE
11.1
11.2
11.3
11.4
BACKGROUND
GAUSSIAN SENSITIVITY
RAYLEIGH SENSITIVITY
RECEIVER SELECTIVITY (ADJACENT CHANNEL INTERFERENCE)
12 DAB AND DAB+ CHANNEL DECODING
13 ANALOGUE RADIO SERVICES
13.1 ANALOGUE RADIO REQUIREMENTS FOR IN VEHICLE DAB DIGITAL RADIO
ADAPTERS
13.2 ANALOGUE RADIO REQUIREMENTS FOR IN-VEHICLE DAB DIGITAL RADIO
RECEIVERS
14 FUNCTIONAL SPECIFICATIONS
14.1
14.2
14.3
14.4
RETUNING
TEXT DISPLAY
ANNOUNCEMENT SIGNALLING AND SWITCHING
SERVICE FOLLOWING:
15 APPENDIX TWO NOTES ON SPECIFICATIONS.
15.1 BROADCAST SIGNAL
15.2 SUB-CHANNEL DECODING
15.3 DECODING OF AUDIO
8
15.4
15.5
15.6
15.7
ANNOUNCEMENT SIGNALLING
SERVICE FOLLOWING
SERVICE LABEL, PROGR AMME TYPE
DYNAMIC LABELS (DLS)
OVER SHEET: SPECIFICATIONS 3 AND 4


Technology Provider Test Specification
Per Product Test Specification
6.a. Introduction to the Receiver Testing Specifications
SPECIFICATION 3

Technology Provider Test Specification
6.0 Introduction
7.0 DAB Stream MSC
8.0 DAB Channels and Services
9.0 Reconfigurations
10.0 DLS
11.0 Character Sets
12.0 Scanning and Tuning
13.0 Performance Related
14.0 Automotive Specific
15.0 FM (analogue) radio
SPECIFICATION 4

Per Product Test Specification
18.0 Introduction
18.1 Specification references
18.2 Product design targets versus test criteria
18.3 Applicability of the Tests
18.4 Objectives for “Per Product” Testing.
18.5 Objectives and Test Methods for Functional Service Part
18.6 Objective and Test Method for the Radio and Antenna Part
Appendix A - functional tests
19.0 Technical information
9
A.1 Introduction
A.2 Downloadable Test Streams
A.3 Test Requirements
A.4 User Interface Tests
A.4.1 Approach to running these tests
A.4.2 Test equipment needed
A.5 Test Setup and Preparation – part 1
A.6 Test 1 – “DRAP-Tick-Fcn-Test-1 scan add new services”
A.7 Test 2 – “DRAP-Tick-Fcn-Test-2 play audio and view label for audio service”
A.8 Test 3 – “DRAP-Tick-Fcn-Test-3 DLS is displayed and displayed correctly”
A.9 Test setup and preparation – part 2
A.10 Test 4 – “DRAP-Tick-Fcn-Test-4 Scan and add another ensemble”
Appendix B – Test streams
B.1 DRAP-TEG-TESTSTREAM-001_V0.5.eti.7z
Appendix C – Test Method for the Per Product Test, Radio Performance
C.1 Introduction and Objectives
C.2 The “Onset Of Impairment” Test
C.2.2 Receiver Configuration Specification Required
C.3 Standard Test Conditions
C.3.1 Environmental
C.3.2 Baseband stream and listening conditions for acoustic OOI testing
C.3.3 Equipment and Test Conditions Required at all Test Facilities
C.4 RF Test Frequencies, Pass / Fail Limits
C.4.1 Establishment of the radiated test threshold value
C.4.2 Establishment of the conducted test threshold value
C.4.3 Standard RF Test Frequencies and Pass / Fail Limits:
C.5.1 Method of Conducted Signal Measurement Using Acoustic OOI
C.5.1.1 Initial conditions- Measurement Uncertainty Calculation
C.5.1.2. Empirical Method – 1 kHz tone, EEP-3A
C.5.1.3. Empirical Method – Music stream, UEP-3.
C.6 FAR / SAR and GTEM Method for Radiated Go / No Go Test.
C.6.1 FAR/SAR Test Setup
C.6.2 GTEM Test Setup
C.6.3 Go / No Go Test Method Using Acoustic OOI in FAR/SAR or GTEM
C.6.3.2 Empirical Method – 1 KHz tone EEP-3A protection.
C.6.3.3. Empirical Method – Music stream, UEP-3.
C.7 Radiated Test Result Template – FAR / SAR
C.8 Conducted Test Result Template
C.9 Measurement Uncertainty Calculation (for info)
C.10 FAR / SAR Radiated Measurement Uncertainty Calculation (for info)
C.11 GTEM Radiated Test Result Template (same thresholds as for SAR / FAR)
C.12 GTEM Radiated Measurement Uncertainty Calculation (for info)
Appendix D – Technical requirement for the radio test facility
D.1 Introduction
D.2 Standard
10
Appendix E
1.0 Digital Radio Technical Specifications
1.1 Introduction
The following set of Digital Radio Technical Specifications provide a comprehensive outline of the
technical process which FM, DAB and DAB+ digital radio receivers must go through in order to be
granted use of the Digital Radio Certification Mark (tick mark).
These technical specifications are based on work undertaken as part of Government’s Digital Radio
Action Plan, which ran between 2010 and 2013. These specifications adopt work completed by the
Digital Radio Actions Plan’s Technology and Equipment Group. Please see here for details of the
Digital Radio Action Plan https://www.gov.uk/government/publications/digital-radio-action-plan.
Please reference www.getdigitalradio.com/industry when reading this technical document. This
website provides further details on the process for applying for use of the tick mark, as well as the
resources (application forms, change request forms) required.
1.2 The tick mark
When used on digital radio equipment, the tick mark certifies that “the radio is ‘Future-ready’ and
receives the available DAB and FM radio stations in your area”.
1.3 DAB radio products
This specification covers devices which can receive terrestrially transmitted DAB and DAB+ digital
radio services. The sections on “Scope” in each Minimum Specification contain further guidance.
1.4 The Specifications
In order to be granted use of the tick mark, receivers must meet one of the Minimum Specifications,
below.


Minimum Specification for FM, DAB and DAB+ domestic digital radio receivers
Minimum Specification for FM, DAB and DAB+ in-vehicle digital radio receivers
In order to prove compliance against the Minimum Specification and be granted use of the tick
mark, receivers must complete both of the Test Specifications, below.


Technology Provider Test Specification
Per Product Test Specification
11
Please note: in-vehicle receivers do not need to complete some elements of the Per Product Test.
These are highlighted in the Digital Radio Technical Specifications.
Please note: New vehicles are not required to complete the Per Product Test.
1.5 Testing receivers in the Per Product Test Specification
In order to complete the Per Product Test Specification Digital Radio UK recommends that receiver
manufacturers use an accredited test house, to test receivers against the Per Product Test. Digital
Radio UK will return all applications – which have gone through an accredited test house – within 7
days.
If you would like to find out about the currently available accredited test houses, or if you would like
to apply to become an accredited test house, please email tickmark@digitalradiouk.com.
1.6 Application
Once a receiver has been tested, the receiver manufacturer must apply to Digital Radio UK to be
granted use of the tick mark. Please send all applications to tickmark@digitalradiouk.com.
Please reference www.getdigitalradio.com/industry for further information on applying for the tick
mark.
12
SPECIFICATION 1
Minimum Specifications for FM, DAB and DAB+ domestic digital radio receivers
13
2.0 Introduction
The following outlines the minimum technical specifications for domestic FM, DAB and DAB+
receivers.
Steering
Board decision
Some of these devices may also receive other digital radio services via alternative delivery
platforms, such as the internet or digital television. This specification does not cover any
element of a receiver designed to receive digital services via these alternative delivery
platforms. This specification does, however, cover some aspects of analogue FM radio reception.
This specification does not cover in-vehicle receivers. In-vehicle receivers are addressed
elsewhere within these Digital Radio Technical Specifications.
All reference to minimum specification is placed outside of boxes. Any text inside a text box
(including this paragraph) does not directly reference the Minimum Specification. Receivers do
not need to meet the criteria written in boxes. If you are unclear about any part of this
specification please email tickmark@digitalradiouk.com.
2.2 Purpose of this specification
This specification will be used to assess the eligibility of a product for use of the Digital Radio
Certification Mark (tick mark). If you would like further information about the tick mark please
see www.getdigitalradio.com/industry.
14
3.0 Technical information
16 SCOPE
This specification details the requirements for domestic FM, DAB and DAB+ digital radio receivers.
This specification is written for producers and manufacturers of DAB digital radio receivers (with
FM and DAB+) who wish to sell products in the United Kingdom.
This specification is not compulsory. It is voluntary.
This specification covers devices which can receive terrestrially transmitted DAB and DAB+ digital
radio services. Some of these devices may also receive other digital radio services via alternative
delivery platforms, such as the internet or digital television. This specification does not cover any
element of a receiver designed to receive digital services via these alternative delivery platforms.
This specification does, however, cover some aspects of analogue FM radio reception.
This specification does not cover devices that are designed specifically for use within a vehicle.
This specification covers many types of receiver, including portable and larger devices, and
receivers incorporated in equipment such as mobile phones and computers. These devices may be
mains powered, or battery powered, or both. They may have a telescopic antenna, a flexible wire
antenna, a headphone antenna, an antenna integrated into the receiver or they may be supplied
without an antenna. This specification covers devices whose primary function is to receive DAB, FM
and DAB+ digital radio services, and also devices which have one or more other functions in
addition to receiving DAB and DAB+ digital radio services. This includes adapters, whose main
function is to add a DAB and DAB+ digital radio capability to another device.
Please note – if you are testing a product that uses the headphone lead as the antenna please
email tickmark@digitalradiouk.com.
15
17 DEFINITIONS
For the purposes of this document the word “receiver” refers to a DAB, DAB+ digital radio receiver
and FM analogue radio receiver, unless stated otherwise.
For the purposes of this document, the word “adapter” refers to a DAB and DAB+ digital radio
adapter. An adapter is defined as a “device that provides a DAB and DAB+ capability to another
device”, for example an analogue radio that does not have that capability. An adapter device does
not require FM capability to meet this specification.
18 REFERENCES
The following documents contain provisions that, through reference in this text, constitute
provisions of the present document.







ETSI EN 300 401 Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) to Mobile,
Portable and Fixed receivers
ETSI TS 101 756 Digital Audio Broadcasting (DAB); Registered Tables
ETSI TS 102 563 Digital Audio Broadcasting (DAB); Transport of Advanced Audio Coding
(AAC) audio
ETSI TR 101 496 Digital Audio Broadcasting (DAB); Guidelines and rules for implementation
and operation; (Parts 1 and 2)
ETSI 300 384 Radio broadcasting systems; Very High Frequency (VHF), frequency
modulated, sound broadcasting transmitters
BS EN 62104:2007 Characteristics of DAB Receivers
ETSI standards are available, free of charge, from www.etsi.org.
19 FREQUENCY RANGE
Receivers shall be capable of receiving DAB and DAB+ Digital Radio broadcasts in the frequency
range 174 to 240 MHz. The centre frequencies of the transmitted signal complies with the preferred
Band III frequencies specified in ETSI TR 101 496.
The receiver must also be capable of receiving FM analogue radio services.
16
20 RF PERFORMANCE
20.1 BACKGROUND
Broadcast coverage planning is based on the assumption that a receiver has certain RF performance
characteristics. These assumptions can be referred to as the “receiver model” and have been based
on an assessment of receivers already in the market.
In order to be eligible to display a Digital Radio Certification Mark the receiver must have the same or
better performance than the “receiver model” used in coverage planning. This required performance
is described in the sections below.
The receiver must be able to play out “adequate audio reception”. The required “adequate audio
reception” is based on the reception of a 128 kbit/s DAB MPEG 2 audio component which has been
transmitted with error protection level of UEP-3. “Adequate audio reception” is achieved when the
receiver is capable of reconstructing a data stream at the output of the Viterbi decoder with an error
rate equal to or better than 1 x 10-4 when encoded with an error protection level of EEP-3A with a
128 kbit/s DAB MPEG 2 audio component.
For test purposes, 1) an objective audio test and 2) a performance audio test are specified.
For the objective test, the audio component shall consist of a 1 KHz mono tone, encoded at 3 dB
below full scale (-3dBFS) when transmitted with error protection level of EEP-3A and the receiver will
be required to have no more than a permitted number of audio impairments occurring in a given
period of listening. An audible impairment is defined as any disturbance to the signal detectable by a
listener and includes mutes or dropouts (when the signal disappears) and audible noise at the output.
The receiver must comply with the Band III provisions of BS EN 62104:2007, with the exceptions that
The definitive method, known as the onset of impairment (OOI) test is detailed in the “Per Product
the thresholds for Gaussian Sensitivity, Rayleigh Sensitivity and Adjacent Channel Interference
Test Specification”.
should be taken from this document. The receiver must comply with the requirements for both
For the performance tests C5.1.3 and C6.3.3, an aural evaluation will made using a stereo music
source with a 128 kbit/s DAB MPEG 2 audio component which has been transmitted with error
protection level of UEP-3.
Please see Gaussian and Rayleigh sensitivity below.
The receiver must comply with the Band III provisions of BS EN 62104:2007, with the exceptions that
the thresholds for Gaussian Sensitivity, Rayleigh Sensitivity and Adjacent Channel Interference
should be taken from this document.
17
20.2 GAUSSIAN SENSITIVITY
A domestic receiver that is sold with an antenna must provide adequate audio reception (as defined
above) when receiving a DAB signal with a field strength signal greater than FSGmin in a Gaussian
transmission channel.
The value FSGmin is frequency dependent. It is 34.4 dBµV/m for a signal with a centre frequency of
220 MHz, and its value at other frequencies can be calculated from the following formula:
FSGmin = [ 34.4 + 20log(F/220) ] dBµV/m, where F is the frequency in MHz.
Receivers supplied without an antenna must be capable of providing adequate audio reception (as
defined above) with an input power level of -97.7 dBm when fed by a DAB signal with Gaussian
transmission channel characteristics. This external antenna must require a gain of -8.1 dBi or greater
to produce this power at the required minimum field strength. Domestic receivers must have an
input impedance of 75 Ohms.
20.3 RAYLEIGH SENSITIVITY
Under normal “real world” reception conditions the DAB or DAB+ signal will be received via a
Rayleigh transmission condition containing multiple echoes, Doppler frequency shift and often
contributions from multiple SFN transmitters. Under these conditions the receiver will require a
greater signal to noise ratio for normal operation.
Broadcast coverage planning in the UK assumes a rayleigh transmission channel, and for this
reason coverage thresholds are set at 5.5 dBs higher than would be required in a Gaussian
environment.
The receiver must provide adequate audio reception of a DAB signal with Rayleigh transmission
channel characteristics with field strengths at or above the frequency dependent threshold shown in
the following formula.
FSRmin = [ 39.9 + 20log(F/220) ] dBµV/m, where F is the frequency in MHz
Receivers supplied without an antenna must be capable of providing adequate audio reception (as
defined above) with an input power level of -92.2 dBm when fed by a DAB signal with Rayleigh
transmission channel characteristics. This external antenna will require a gain of -8.1 dBi or greater
to produce this power at the required minimum field strength. The Rayleigh fading channel
characteristics will be as specified in BS EN 62104:2007.
18
20.4 RECEIVER SELECTIVITY (ADJACENT CHANNEL INTERFERENCE)
The receiver shall be capable of providing adequate audio reception (as defined above) in the
presence of interfering DAB signals at specified levels on other frequencies.
A receiver must be able to provide adequate reception of a DAB audio sub-channel with error
protection level UEP-3 when the wanted signal has a level of -70 dBm, and it is in the presence of
any one of the interfering signals with a frequency offset and amplitude as described in the following
table.
The figure for adjacent channel interference (N+/- 1) from the table below is applicable for the
majority of DAB frequency blocks where the spacing between centre frequencies is 1.712 MHz. This
table does not apply in situations where the spacing between DAB frequency block centre
frequencies is less than 1.712 MHz.
Interfering DAB Frequency block
relative to wanted signal
N±1
N±2
N±3 and to extent of band
Level of interfering signal,
relative to wanted signal
(Gaussian wanted signal at threshold level
of -70 dBm at the input to the receiver)
+35 dB
+40 dB
+45 dB
21 DAB AND DAB+ CHANNEL DECODING
Receivers must be capable of decoding at least one audio sub-channel.
A receiver must be able to decode a DAB audio service contained in a sub-channel of a size up to and
including 280 Capacity Units (e.g. 256 kbps@UEP-1).
DAB audio services are defined in ETSI EN 300 401.
A receiver must be able to decode a DAB+ audio service contained in a sub-channel of a size up to
and including 144 Capacity Units (e.g. 96 kbps@EEP-1A).
DAB+ audio services are defined in ETSI TS 102 563.
22 ANALOGUE RADIO SERVICES
19
22.1 ANALOGUE RADIO REQUIREMENTS FOR DAB DIGITAL RADIO ADAPTERS
A DAB digital radio receiver with a primary purpose of adapting an analogue receiver to digital is not
required to receive any analogue radio services
22.2 ANALOGUE RADIO REQUIREMENTS FOR RECEIVERS NOT PRIMARILY INTENDED TO
BE USED AS ADAPTERS
The receiver must receive FM analogue radio services currently on air in the UK.
The UK FM transmission standard is as described in ETSI 300 384.
The receiver must be capable of receiving RDS data (as defined by BS EN 62106:2009) contained as
part of an FM broadcast signal.
Receivers must support RDS in order to implement service linking features which are described later
in this document.
20
23 FUNCTIONAL SPECIFICATIONS
23.1 RETUNING
A receiver which has a stored list of service labels must provide the user with the option of scanning
the whole Band III band to update its stored service list when required.
This feature must either be initiated by the press of a single button on the device or, if it is a feature
in a menu structure, it must be in the top level of the menu, or one level down.
The re-scan / re-tune feature must be able to cope with the following changes:
1. Service moves to a different multiplex
2. New multiplex appears
3. Multiplex changes its frequency
4. New Service appears
5. Service changes name
6. Service disappears
7. Multiple Instances of the same programme content with the same Service ID on different
frequencies and with varying signal levels
DAB Ensembles in the UK change their configuration from time to time. It is preferred by UK
broadcasters that the receiver should update its stored database of available programmes by
constantly checking the FIC of the ensemble to which it is currently tuned.
21
23.2 TEXT DISPLAY
The receiver must have a means of displaying text to the user.
The text display must display the audio service name (the Component Label). The text display must
be able to display the following graphic symbols, correctly mapped, visually well-formed and clear:
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789
Lower case characters may be mapped to upper case equivalents and Therefore show only:
ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
Receivers must display the long form labels of audio services in PREFERENCE to short form labels.
The receiver must display the component label, in PREFERENCE to the service label, as it is possible
to have two audio channels sharing the same service label. If a component label is not broadcast,
the service label shall be used.
The text display must display whatever label is used in either its short form (8 characters long) or its
long form (16 characters long). It is not permissible for the receiver to truncate the label to any
other length.
Receivers must receive the dynamic label service from up to 48 bytes of the X-PAD of the currently
received service and display it to the user legibly. Receivers must treat the special characters
0x0A,0x0B and 0x1F as specified and apply such formatting as is possible on the display.The receiver
shall act upon the command to remove the label from the display by immediately removing the
label, even if it has only been partially displayed.
In cases where broadcasters send additional graphic symbols such as @ ? + - £ % & ! ."() ,” or indeed
any graphic symbols as specified within ETSI EN 300 401, and the receiver cannot display these
graphic symbols correctly mapped, visually well-formed and clear then the graphical symbol shown
should be a “space” or “□” or, in any case, a similar distinctly non alpha / numeric character.
22
24 APPENDIX ONE NOTES ON SPECIFICATIONS.
This appendix provides guidance notes for manufacturers.
There are currently 5 key documents which specify how to create DAB and DAB+ broadcast signals.
Detailed knowledge of these five documents is necessary for manufacturers wishing to build DAB
and DAB+ receivers which meet this specification. The five documents are listed below. (All of these
documents may be downloaded for free from www.etsi.org). This appendix provides some notes as
to which sections of these documents are particularly relevant for receivers intended to be sold for
use in the United Kingdom.
The key documents are:






ETSI EN 300 401 Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) to mobile,
portable and fixed receivers.
ETSI TS 101 756 Digital Audio Broadcasting (DAB); Registered Tables
ETSI TS 102 563 Digital Audio Broadcasting (DAB); Transport of Advanced Audio Coding
(AAC) audio
ETSI TR 101 496 Digital Audio Broadcasting (DAB); Guidelines and rules for implementation
and operation; (Parts 1).
ETSI TR 101 496 Digital Audio Broadcasting (DAB); Guidelines and rules for implementation
and operation; (Parts 2).
ETSI TR 101 496 (Part 3).
24.1 BROADCAST SIGNAL
The following sections of the specifications describe how the broadcast signal is constructed.
ETSI EN300 401 provides relevant information in the following sections:








Section 4 – Basic DAB System Description
o All clauses
o Except clause 4.5 (Conditional Access Systems)
Section 5 – Transport Mechanisms
o Clauses 5.1 (Introduction), 5.2 (FIC), 5.3.1 (MSC)
o Except clauses 5.2.2.2.2 (FIG Type 2), 5.2.2.3 (FIG Type 5) and 5.2.2.4 (FIG Type 6)
Section 10 – Energy Dispersal
Section 11 – Convolution Coding
Section 12 – Time Interleaving
Section 13 – Common Interleaved Frame
Section 14 – DAB Transmission Signal
Section 15 – Radio Frequency Characteristics
23
ETSI TR 101 496 part 1 provides information in the following section:

Section 4 – General Outline
o All clauses
o Except clause 4.3.3 (Data services)
24.2 SUB-CHANNEL DECODING
The following sections of the documents provide information to enable receiver technology
developers to extract a sub-channel form a received DAB ensemble.
ETSI EN300 401 provides relevant information in the following section:

Section 6 – Multiplex Configuration Information (MCI)
o All clauses
o Except clause 6.2.2 (FEC Sub-Channel Organisation), 6.3.2 (Service component in
packet mode with or without Conditional Access), 6.3.3 (Service component with
Conditional Access in stream mode or FIC), 6.3.5 (Service component Global
Definition)
ETSITR 101 496 part 1 provides information in the following section:

Section 5 – Description of System Features
o All clauses
o Except clause 5.7 (Fast Information Data Channel), 5.8 (Conditional Access), 5.9
(Future Features)
ETSITR 101 496 part 2 provides information in the following section:

Section 3 – Implementation and Operation of System Features
o Clauses 3.1 (Introduction), 3.2 (Data Transport Mechanisms), 3.2.1 (Fast
Information Channel (FIC)), 3.3 (Multiplex Configuration Information)
Audio Service Decoding
 Stereo, parametric stereo and spectral band replication shall be supported.
24
24.3 DECODING OF AUDIO
The following sections of the specifications provide information required to decode DAB and DAB+
audio services.
ETSI EN300 401 provides relevant information for DAB in the following section:

Section 7 – Audio Coding
o All clauses
o Except clauses 7.4.1.1 (dynamic range control), 7.4.5.1 (MSC data groups in XPAD), 7.4.5.2 (dynamic label segment)
ETSI TR 102 563 provides relevant information for DAB+ - all sections are relevant.
ETSI TR 101 496 part 2 provides information in the following section:

Section 3 – Implementation and Operation of System Features
o Clauses 3.1 (Introduction), 3.2 (Data Transport Mechanisms), 3.2.2 (Stream Mode),
3.4 (Audio Coding).
24.4 SERVICE LABEL, PROGR AMME TYPE
Services are correctly labelled so that they can be recognised by the listener, replicating behaviour
from RDS PS and RDS PTY.
Broadcasters transmit a label on each audio service that is unique within each ensemble. This is
transmitted as a long label of up to 16 characters in the EBU Latin 1 character set. A short label of
up to 8 characters is also defined. Both long and short labels are static, and do not change unless
the name of the service changes.
Broadcasters set the static programme type appropriate for the service using the primary Pty.
ETSI EN300 401 provides relevant information in the following section:

Section 6 – Data Features
o Clauses 8.1.1 (Introduction), 8.1.5 (Programme Type), 8.1.14.1 (Programme Service
Label), 8.1.14.3 (Service Component Label).
ETSI TR 101 496 part 2 provides information in the following section:

Section 3 – Implementation and Operation of System Features
o Clauses 3.6.5 (Programme Type), 3.6.13 (Ensemble, Service and Service Component
Labels)
25
24.5 DYNAMIC LABELS (DLS)
Dynamic labels are used by broadcasters to convey messages to the listener, in the same way as
RadioText is used in RDS. United Kingdom broadcasters transmit information in dynamic labels
which are transmitted in up to 48 bytes of X-PAD per audio frame, using the EBU Latin 1 character
set. Broadcasters use the additional characters of 0x0A and 0x0B, and the Command to remove the
current label.
ETSI EN300 401 provides relevant information in the following section:

Section 7 – Audio Coding
o Clause 7.4.5.2 (Dynamic Label Segment)
ETSITR102 563 provides relevant information in the following section:

Section 5 – Audio
o Clause 5.4 (Programme Associated Data)
ETSI TR 101 496 part 2 provides information in the following section:

Section 3 – Implementation and Operation of System Features
o Clauses 3.2.4 (Programme Associated Data (PAD)), 3.5.6 (Dynamic Label)
26
SPECIFICATION 2
Minimum Specifications for FM, DAB and DAB+ In-vehicle digital radio receivers
27
4.0 Introduction
The following outlines the minimum technical specifications for In-vehicle FM, DAB and DAB+
receivers.
Some of these devices may also receive other digital radio services via alternative delivery
platforms, such as the internet. This specification does not cover any element of a receiver
designed to receive digital services via these alternative delivery platforms. This specification
does, however, cover some aspects of analogue FM radio reception.
This specification does not cover domestic receivers. Domestic receivers are addressed
elsewhere within these Digital Radio Technical Specifications.
This specification is not compulsory for all receivers. It will be used to assess the eligibility of a
product for use of the Digital Radio Certification Mark.
All references to minimum specification is placed outside of boxes. Any text inside a text box
(including this paragraph) does not directly reference the minimum specification. Receivers do
not need to meet the criteria written in boxes. If you are unclear about any part of this
specification please email tickmark@digitalradiouk.com.
4.1 Purpose of the specification
This specification is written for producers and manufacturers of DAB digital radio receivers (with
FM and DAB+) who wish to sell products in the United Kingdom.
5.0 Technical information
25 SCOPE
This specification details the requirements for an In-Vehicle DAB and DAB+ digital radio receiver
and FM analogue receiver. For the purposes of this document such a receiver is defined as any
DAB, DAB+ and FM radio that is designed specifically for use within a vehicle.
This specification is written for producers and manufacturers of DAB digital radio receivers (with
FM and DAB+) who wish to sell products in the United Kingdom.
This specification is not compulsory. It is voluntary.
This specification covers devices that can receive terrestrially transmitted DAB, DAB+ digital radio
services, as well as FM analogue services. Some of these devices may also receive other digital
radio services via alternative delivery platforms, such as the Internet. This specification does not
cover any aspect of a receiver intended to receive digital services via these alternative delivery
platforms.
This specification does, however, cover some aspects of analogue FM radio reception.
This specification does not cover devices that are designed specifically for use within the home.
This specification covers many types of receiver, including devices integrated into the dashboard
and aftermarket devices mounted in the dashboard, behind the dashboard, to the vehicle
windscreen or elsewhere. This specification covers devices whose sole function is to receive DAB
and DAB+ digital radio services, as well as FM analogue services, and also devices that have one or
more other functions in addition to receiving DAB and DAB+ digital radio services.
Please note – if you are testing a product that uses the headphone lead as the antenna please
email tickmark@digitalradiouk.com.
Please not – adapter devices are not required to receive FM analogue radio services.
29
For definitions, references and frequency range – see sections 24, 25 and 26.
26 RF PERFORMANCE
26.1 BACKGROUND
Broadcast coverage planning is based on the assumption that a receiver has certain RF performance
characteristics. These assumptions can be referred to as the “receiver model” and have been based on an
assessment of receivers already in the market.
In order to be eligible to display a Digital Radio Certification Mark the receiver must have the same or
better performance than the “receiver model” used in coverage planning. This required performance is
described in the sections below.
The receiver must be able to play out “adequate audio reception”. The required “adequate audio
reception” is based on the reception of a 128 kbit/s DAB MPEG 2 audio component which has been
transmitted with error protection level of UEP-3. “Adequate audio reception” is achieved when the
receiver is capable of reconstructing a data stream at the output of the Viterbi decoder with an error rate
equal to or better than 1 x 10-4 when encoded with an error protection level of EEP-3A with a 128 kbit/s
DAB MPEG 2 audio component.
For test purposes, 1) an objective audio test and 2) a performance audio test are specified.
For the objective test, the audio component shall consist of a 1 KHz mono tone, encoded at 3 dB below
full scale (-3dBFS) when transmitted with error protection level of EEP-3A and the receiver will be
required to have no more than a permitted number of audio impairments occurring in a given period of
listening. An audible impairment is defined as any disturbance to the signal detectable by a listener and
includes mutes or dropouts (when the signal disappears) and audible noise at the output. The definitive
method, known as the onset of impairment (OOI) test is detailed in the “Per Product Test Specification”.
For the performance tests C5.1.3 and C6.3.3, an aural evaluation will made using a stereo music source
with a 128 kbit/s DAB MPEG 2 audio component which has been transmitted with error protection level
of UEP-3.
The receiver must comply with the Band III provisions of BS EN 62104:2007, with the exceptions that the thresholds
for Gaussian Sensitivity, Rayleigh Sensitivity and Adjacent Channel Interference should be taken from this
document.
30
26.2 GAUSSIAN SENSITIVITY
A DAB Digital radio in-vehicle receiver that is sold packaged with an antenna must provide adequate audio
reception (as defined above) when receiving a DAB signal with a field strength signal greater than FSGmin in a
Gaussian transmission channel.
The value of FSGmin is frequency dependent. It is 29.2 dBµV/m for a signal with a centre frequency of 220 MHz, and
its value at other frequencies can be calculated from the following formula:
FSGmin = [ 29.2 + 20log(F/220) ] dBµV/m, where F is the frequency in MHz
Receivers supplied without an antenna shall be capable of providing adequate audio reception (as defined above)
with an input power level of -97.7 dBm when fed by a DAB signal with Gaussian transmission channel
characteristics. This external antenna will require a gain of -2.9 dBi or greater to produce this power at the required
minimum field strength. In-vehicle receivers must have an input impedance of 50 Ohms.
26.3 RAYLEIGH SENSITIVITY
Under normal “real world” reception conditions the DAB or DAB+ signal will be received via a
Rayleigh transmission conditions containing multiple echoes, Doppler frequency shift and often
contributions from multiple SFN transmitters. Under these conditions the receiver will require a
greater signal to noise ratio for normal operation.
Broadcast coverage planning in the UK assumes a Rayleigh transmission channel, and for this
reason coverage thresholds are set at 5.5 dBs higher than would be required in a Gaussian
environment.
A DAB Digital radio in-vehicle receiver that is sold with an antenna must provide adequate audio reception (as
defined above) when receiving a DAB signal with a field strength signal greater than FSRmin in a Rayleigh
transmission channel.
The value of FSRmin is frequency dependant. It is 34.7 dBµV/m for a signal with a centre frequency of 220 MHz, and
its value at other frequencies can be calculated from the following formula.
FSRmin = [ 34.7 + 20log(F/220) ] dBµV/m, where F is the frequency in MHz
Receivers supplied without an antenna must be capable of providing adequate audio reception (as defined above)
with an input power level of -92.2 dBm when fed by a DAB signal with Rayleigh transmission channel
characteristics. This external antenna will require a gain of -2.9 dBi or greater to produce this power at the required
minimum field strength
31
26.4 RECEIVER SELECTIVITY (ADJACENT CHANNEL INTERFERENCE)
The receiver must be capable of providing adequate audio reception (as defined above) in the presence of
interfering DAB signals at specified levels on other frequencies.
A receiver must be able to provide adequate reception of a DAB audio sub-channel with error protection level UEP3 when the wanted signal has a level of -70 dBm, and it is in the presence of any one of the interfering signals with
a frequency offset and amplitude as described in the following table.
The figure for adjacent channel interference (N+/- 1) from the table below is applicable for the majority of DAB
frequency blocks where the spacing between centre frequencies is 1.712 MHz. This table does not apply in
situations where the spacing between DAB frequency block centre frequencies is less than 1.712 MHz.
Frequency block of Interfering DAB signal
relative to wanted signal
N±1
N±2
N±3 and to extent of band
Level of interfering signal,
relative to wanted signal
(Gaussian wanted signal at threshold level
of -70 dBm at the input to the receiver)
+35 dB
+40 dB
+45 dB
27 DAB AND DAB+ CHANNEL DECODING
Receivers must be capable of decoding at least one audio sub-channel.
A receiver must be able to decode a DAB audio service contained in a sub-channel of a size up to and including 280
Capacity Units (e.g. 256 kbps@UEP-1).
DAB audio services are defined in ETSI EN 300 401.
A receiver must be able to decode a DAB+ audio service contained in a sub-channel of a size up to and including
144 Capacity Units (e.g. 96 kbps@EEP-1A). DAB+ audio services are defined in ETSI TS 102 563
32
28 ANALOGUE RADIO SERVICES
28.1 ANALOGUE RADIO REQUIREMENTS FOR IN VEHICLE DAB DIGITAL RADIO ADAPTERS
A DAB digital radio receiver with a primary purpose of adapting an analogue receiver to digital is not required to
receive any analogue radio services
28.2 ANALOGUE RADIO REQUIREMENTS FOR IN-VEHICLE DAB DIGITAL RADIO RECEIVERS
The receiver must receive FM and AM analogue radio services currently on air in the UK.
The UK FM transmission standard is as described in ETSI 300 384.
The receiver must be capable of receiving RDS data (as defined by BS EN 62106:2009) contained as part of an FM
broadcast signal.
Receivers are required to support RDS in order to implement service linking features which are described later in
this document.
33
29 FUNCTIONAL SPECIFICATIONS
29.1 RETUNING
A receiver that has a stored list of service labels from many ensembles must provide the user with the option of
scanning the whole Band III band to update its stored service list when required.
This feature must either be initiated by the press of a single button on the device or, if it is a feature in a menu
structure, it must be in the top level of the menu, or one level down.
Receivers that only display the services on the current ensemble should update the displayed list of audio services
if the selected ensemble reconfigures to add, remove or rename services.
The re-scan / retune feature must be able to cope with the following changes:
1. Service moves to a different multiplex
2. New multiplex launches
3. Multiplex changes its frequency
4. New Service appears
5. Service changes name
6. Service disappears
7. Multiple Instances of the same programme content with the same Service ID on different frequencies and with
varying signal levels
DAB Ensembles in the UK change their configuration from time to time. It is preferred by UK
broadcasters that the receiver should update its stored database of available programmes by
constantly checking the FIC of the ensemble to which it is currently tuned.
34
29.2 TEXT DISPLAY
The receiver must have a means of displaying text to the user.
The text display must display the audio service name (the Component Label). The text display must be able to
display the following graphic symbols, correctly mapped, visually well-formed and clear:
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789
Lower case characters may be mapped to upper case equivalents and Therefore show only:
ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
Receivers shall display the long form labels of audio services in PREFERENCE to short form labels.
The receiver shall display the component label, in PREFERENCE to the service label, as it is possible to have two
audio channels sharing the same Service Label. If a component label is not broadcast, the service label shall be
used.
The text display must display whatever label is used in either its short form (8 characters long) or its long form (16
characters long). It is not permissible for the receiver to truncate the label to any other length.
For any of these characters which cannot be shown correctly, the graphical symbol shown must be a “space” or “□”
or, in any case, a similar distinctly non alpha / numeric character.
Receivers must treat the special characters 0x0A, 0x0B and 0x1F as specified and apply such formatting as is
possible on the display. The Receiver must act upon the command to remove the label from the display by
immediately removing the label, even if it has only been partially displayed.
In cases where broadcasters send additional graphic symbols such as @ ? + - £ % & ! ."() ,” or indeed any graphic
symbols as specified within ETSI EN 300 401, and the receiver cannot display these graphic symbols correctly
mapped, visually well-formed and clear then the graphical symbol shown should be a “space” or “□” or, in any case,
a similar distinctly non alpha / numeric character.
In-vehicle receivers are not required to implement DLS.
35
29.3 ANNOUNCEMENT SIGNALLING AND SWITCHING
The receiver must support announcement switching as defined in ETSI 300 401 sub-section 8.1.6. This feature
instructs the receiver to select an alternative audio source only for the duration of an audio announcement, before
returning to the original source.
Manufacturers may provide the user with an option to disable this feature.
The receiver must vector from the selected service to an audio service carrying a traffic announcement if all the
following conditions are met




The selected service is signalled as supporting announcements by means of a Fig 0/18 in the service
information with ASu flag bit 1 set to indicated “Traffic” and is provided with a Cluster Id.
An announcement is raised by another service on the same ensemble with the same Cluster Id.
The user has not selected a menu option to disable the announcement feature.
When user is listening to the CD, AUX in etc the station still tuned in the background will interrupt the
users’ listening to play the announcement
The receiver does not have to respond to announcements that are signalled as being present
on other Ensembles. Whether it does so or not is a design choice for the manufacturer.
Receivers which contain FM as well as DAB and DAB+ reception capabilities must not switch to traffic
announcements received on an FM service if that FM service has the same programme identifier (PI) code as the
service ID (SID) of the original signal. (Services whose SID and PI codes match will be carrying identical content.
There is no need to disrupt the DAB audio by switching to the FM version of the same audio – which may not be cotimed).
29.4 SERVICE FOLLOWING:
The receiver must support all aspects of service following, including soft linking and hard linking, as specified in ETSI
TS 103 176 (2013-07) Digital Audio Broadcasting (DAB); Rules of implementation; Service information features
See Ofcom’s Digital Technical Code for broadcaster implementation of service following:
http://stakeholders.ofcom.org.uk/binaries/broadcast/guidance/tech-guidance/digi_tech_code.pdf
36
30 APPENDIX TWO NOTES ON SPECIFICATIONS.
This appendix provides guidance notes for manufacturers.
There are currently several key documents which specify how to create DAB and DAB+ broadcast
signals. Detailed knowledge of these five documents is necessary for manufacturers wishing to
build DAB and DAB+ receivers. The documents are listed below. (All of these documents may be
downloaded for free from www.etsi.org). This appendix provides some notes as to which sections
of these documents are particularly relevant for receivers intended to be sold for use in the United
Kingdom.
The key documents are:






ETSI EN 300 401 Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) to mobile,
portable and fixed receivers.
ETSI TS 101 756 Digital Audio Broadcasting (DAB); Registered Tables
ETSI TS 102 563 Digital Audio Broadcasting (DAB); Transport of Advanced Audio Coding
(AAC) audio
ETSI TR 101 496 Digital Audio Broadcasting (DAB); Guidelines and rules for implementation
and operation; (Parts 1).
ETSI TR 101 496 Digital Audio Broadcasting (DAB); Guidelines and rules for implementation
and operation; (Parts 2).
ETSI TS 103 176 (2013-07) Digital Audio Broadcasting (DAB); Rules of implementation;
Service information features
30.1 BROADCAST SIGNAL
The following sections of the specifications describe how the broadcast signal is constructed.
ETSI EN300 401 provides relevant information in the following sections:








Section 4 – Basic DAB System Description
o All clauses
o Except clause 4.5 (Conditional Access Systems)
Section 5 – Transport Mechanisms
o Clauses 5.1 (Introduction), 5.2 (FIC), 5.3.1 (MSC)
o Except clauses 5.2.2.2.2 (FIG Type 2), 5.2.2.3 (FIG Type 5) and 5.2.2.4 (FIG Type 6)
Section 10 – Energy Dispersal
Section 11 – Convolution Coding
Section 12 – Time Interleaving
Section 13 – Common Interleaved Frame
Section 14 – DAB Transmission Signal
Section 15 – Radio Frequency Characteristics
37
ETSI TR 101 496 part 1 provides information in the following section:

Section 4 – General Outline
o All clauses
o Except clause 4.3.3 (Data services)
30.2 SUB-CHANNEL DECODING
The following sections of the documents provide information to enable receiver technology
developers to extract a sub-channel form a received DAB ensemble.
ETSI EN300 401 provides relevant information in the following section:

Section 6 – Multiplex Configuration Information (MCI)
o All clauses
o Except clause 6.2.2 (FEC Sub-Channel Organisation), 6.3.2 (Service component in
packet mode with or without Conditional Access), 6.3.3 (Service component with
Conditional Access in stream mode or FIC), 6.3.5 (Service component Global
Definition)
ETSI TR 101 496 part 1 provides information in the following section:

Section 5 – Description of System Features
o All clauses
o Except clause 5.7 (Fast Information Data Channel), 5.8 (Conditional Access), 5.9
(Future Features)
ETSI TR 101 496 part 2 provides information in the following section:

Section 3 – Implementation and Operation of System Features
o Clauses 3.1 (Introduction), 3.2 (Data Transport Mechanisms), 3.2.1 (Fast
Information Channel (FIC)), 3.3 (Multiplex Configuration Information)
Audio Service Decoding
 Stereo, parametric stereo and spectral band replication shall be supported.
38
30.3 DECODING OF AUDIO
The following sections of the specifications provide information required to decode DAB and DAB+
audio services.
ETSI EN300 401 provides relevant information for DAB in the following section :

Section 7 – Audio Coding
o All clauses
o Except clauses 7.4.1.1 (Dynamic Range Control), 7.4.5.1 (MSC Data Groups in XPAD), 7.4.5.2 (Dynamic Label Segment)
ETSI TR 102 563 provides relevant information for DAB+ - all sections are relevant.
ETSI TR 101 496 part 2 provides information in the following section

Section 3 – Implementation and Operation of System Features
o Clauses 3.1 (Introduction), 3.2 (Data Transport Mechanisms), 3.2.2 (Stream
Mode), 3.4 (Audio Coding).
30.4 ANNOUNCEMENT SIGNALLING
The following section describes how announcements (such as traffic announcements) are typically
implemented in DAB and DAB+ in the UK. This information is provided here to assist receiver
manufacturers and technology developers to implement systems that will function effectively in the
UK broadcast environment.
If a broadcaster is providing Traffic Announcements, they shall transmit FIG0/18 (Announcement
Support) with ASu flag bit 1 set (Traffic), and a relevant Cluster ID. (If it is not possible to transmit a
Cluster ID, FIG0/18 with zero Cluster IDs may be broadcast, but it is not recommended).
Receivers shall not switch to Traffic Announcements received from the same device on FM-RDS if
Announcement Support (indicated with FIG0/18) is provided on DAB.
Where a service is available on FM-RDS and on DAB, broadcasters shall ensure that the RDS-TA flag
and Announcement Switching (FIG0/19) for their service (Cluster ID=0 or a Cluster ID that contains
their service, ASu Flag bit 1 set) are transmitted in the same state at all times.
Receivers shall receive and act upon Announcement Support (FIG0/18, ASu Flag bit 1 set) and
Announcement Switching (FIG0/19, ASu Flag bit 1 set) signalling in line with their existing RDS TP
and TA behaviours, for the currently received Service. This may include interrupting ancillary
sources (CD, Music Player), altering the volume level of the audio during the Announcement, and
allowing listeners to select stations providing Traffic Announcements over those not. Information
display and user interface should be similar to that used to control RDS-TP and TA.
39
Support for Other Ensemble Announcements (FIG0/25 and FIG0/26) is not required. Future
implementations are likely to require the mandatory provision and use of FIG0/11 (Region
Definition) to provide information when using OE Announcements.
Support for FM Announcements (FIG0/27 and FIG0/28) is not required.
ETSIEN300 401 provides relevant information in the following section

Section 8 – Data Features
o Clauses 8.1.1 (Introduction), 8.1.6 (Announcements)
A future update to the forthcoming document “DAB (Digital Audio Broadcasting, Implementation
Rules, Service Information”) will provide detailed information on the implementation of
Announcements for broadcasters and manufacturers.
ETSI TR 101 496 part 2 provides information in the following section:

Section 3 – Implementation and Operation of System Features
o Clauses 3.6.8 (Announcements), 3.6.20 (Service Information Version (SIV) and
Change event signalling)
30.5 SERVICE FOLLOWING
The following section lists relevant sections in the specifications which cover service following.
ETSI EN300 401 provides relevant information in the following section:

Section 8 – Data Features
o Clauses 8.1.1 (Introduction), 8.1.8 (Frequency Information), 8.1.10.1 (OE
Frequencies), 8.1.10.2 (OE Services), 8.1.15 (Service Linking Information)
ETSI TS 103 176 (2013-07):
 All sections
Soft linking and hard linking is required as part of this.
40
30.6 SERVICE LABEL, PROGRAMME TYPE
Services are correctly labelled so that they can be recognised by the listener, replicating behaviour
from RDS PS and RDS PTy.
Broadcasters shall transmit a label on each audio service that is unique within each ensemble, and
this shall be transmitted as a long label of up to 16 characters in the EBU Latin 1 character set. A
short label of up to 8 characters is also defined. Both long and short labels are static, and do not
change unless the name of the service changes.
Broadcasters set the Static Programme Type appropriate for the service using the Primary Pty.
ETSI EN300 401 provides relevant information in the following section:

Section 6 – Data Features
o Clauses 8.1.1 (Introduction), 8.1.5 (Programme Type), 8.1.14.1 (Programme Service
Label), 8.1.14.3 (Service Component Label).
ETSI TR 101 496 part 2 provides information in the following section:

Section 3 – Implementation and Operation of System Features
o Clauses 3.6.5 (Programme Type), 3.6.13 (Ensemble, Service and Service Component
Labels)
30.7 DYNAMIC LABELS (DLS)
Dynamic Labels are used by broadcasters to convey messages to the listener, in the same way as
RadioText is used in RDS. United Kingdom Broadcasters transmit meaningful information in
Dynamic Labels which are transmitted in up to 48 bytes of X-PAD per audio frame, using the EBU
Latin 1 character set. Broadcasters use the additional characters of 0x0A and 0x0B, and the
Command to remove the current label.
ETSI EN300 401 provides relevant information in the following section:

Section 7 – Audio Coding
o Clause 7.4.5.2 (Dynamic Label Segment)
ETSI TR 101 496 part 2 provides information in the following section:

Section 3 – Implementation and Operation of System Features
o Clauses 3.2.4 (Programme Associated Data (PAD)), 3.5.6 (Dynamic Label)
ETSI TR102 563 provides relevant information in the following section:

Section 5 – Audio
o Clause 5.4 (Programme Associated Data)
41
COVER SHEET: SPECIFICATIONS 3 AND 4
Technology Provider Test Specification
Per Product Test Specification
42
6.a. Introduction to the Receiver Testing Specifications
The approach taken to receiver testing is as follows.
Functionally speaking, for the purposes of conformance testing, a receiver is seen as consisting of core DAB
technology – silicon or module based components, which is commonly used across many end product types, and
“per product” technologies – displays, antennas, power supplies, casework parts etc., which are specific to an end
product model.
This reflects the common way the industry develops and supplies DAB products. Very often there will be a limited
number of core technology suppliers whilst there are very many end product manufacturers. So the testing
specifications reflects this functional split and there follows in specification 3 (“Technology Provider Test
Specification”) a “technology test matrix” which applies to the silicon and module manufacturers, and in
specification 4 (“Per Product Test Specification”) the “per product test specification” which applies to the specific
radio end product.
This is a diagrammatic representation.
Complete
Receiver Product
Finished Receiver
Product
Per Product Technology


User Interface
Responses
Radio Performance
Common Technology


Tuner / Decoder part
Functional & Non Radio
parts
Performance is a function of
final implementation and
radio manufacture.
Performance is function of
design implementation.
Variabilities in construction
and components produce
variabilities in final product
samples:
Performance is not variable
from end sample to end
sample


E.g.
antenna performance
Interference effects
Each end product type
must be tested to “per
product” test
specification.
“Core” technology for
silicon or modules must be
tested to “Technology
Provider Test”
specification.
Concept for DAB receiver technology parts and testing
43
SPECIFICATION 3
Technology Provider Test Specification
For receiver manufacturers and technology providers (silicon/module manufacturers)
This specification describes how the common technology part of a receiver should be tested.
CompleteReceiver
ReceiverProducts
Product
Finished
Common Technology
Per Product Technology


User Interface
Responses
Radio Performance


Tuner / Decoder part
Functional & Non Radio
parts
44
6.0 Introduction
This document provides high level descriptions for testing that should be carried out to provide evidence that the
technology being certified meets the Minimum Specification criteria.
This document should be read by anyone requiring their technology to be accredited with the tick mark. For any
further information on the process for applying to be granted use of the tick mark please visit
www.getdigitalradio.com/industry.
The aim of this document is not to:



Supply the detailed methods for running any of the tests
Identify test equipment needed to execute the tests
Specify or supply input streams (ETI files) for the tests (Please note – Digital Radio UK will not be providing
the ETI files for this test. The technology provider and/or manufacturer in question will have to provide
their own ETI streams for testing).
The aim of this document is to:


Document a set of specifications which test the DAB related aspects of radio receivers which include DAB
technology
Align these DAB related tests to the Domestic and In-vehicle Minimum Specifications.
Please note – for all other aspects of testing that will apply to an end product the reader needs to refer to the Per
Product Test.
Please note – these tests are not designed to be exhaustive. The tests are designed to prove that the receiver
meets the criteria for the UK Minimum Specification.
If you have any questions about these test specifications please email tickmark@digitalradiouk.com.
7.0 DAB Stream MSC
Sub area
Test number
Test
description
Encoding
rate
24kHz
24kHz
24kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
Audio
mode
mono
mono
mono
mono
mono
joint stereo
joint stereo
joint stereo
joint stereo
stereo
stereo
stereo
24kHz
mono
48
48kHz
joint stereo
128
48kHz
stereo
192
1.1.16
48kHz
stereo
256
1.1.17
24kHz
mono
48
48kHz
joint stereo
128
48kHz
stereo
192
48kHz
stereo
256
24kHz
mono
48
48kHz
joint stereo
128
DAB mode
DAB (MPEG Audio Layer II)
DAB modes, protection
levels, encoding rate,
audio mode and data rate
permutations
Valid result
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
1.1.6
1.1.7
1.1.8
1.1.9
1.1.10
1.1.11
1.1.12
1.1.13
1.1.14
1.1.15
Protection
level
UEP-3
1
UEP-1
1.1.18
1.1.19
UEP-2
1.1.20
1.1.21
1.1.22
UEP-4
Data rate
SBR
PS
32
48
64
80
96
96
112
128
160
160
192
256
na
Audio plays for 5 minutes
without any interruptions or
audio artefacts
46
Sub area
Test number
Test
description
Encoding
rate
Audio
mode
Data rate
1.1.23
48kHz
stereo
192
1.1.24
24kHz
mono
48
48kHz
joint stereo
128
1.1.26
48kHz
stereo
192
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
1.2.6
1.2.7
1.2.8
1.2.9
1.2.10
1.2.11
1.2.12
1.2.13
1.2.14
1.2.15
1.2.16
1.2.17
1.2.18
1.2.19
32kHz
32kHz
32kHz
32kHz
32kHz
32kHz
32kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
Mono
Mono
Mono
Mono
Stereo
Stereo
Stereo
Mono
Mono
Mono
Mono
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
16
32
40
48
32
40
48
32
40
48
56
32
40
48
32
40
48
56
64
DAB mode
1.1.25
DAB+ (HE-AACv2) DAB
modes, protection levels,
encoding rate, audio
modes, data rate and
additional AAC encoding
permutations
Valid result
Protection
level
UEP-5
1
EEP- 3A
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
SBR
PS
PS
Audio plays for 5 minutes
without any interruptions or
audio artefacts
PS
PS
PS
47
Sub area
Test number
Test
description
DAB mode
1.2.20
1.2.21
1.2.22
1.2.23
1.2.24
1.2.25
1.2.26
1.2.27
1.2.28
1.2.29
1.2.30
1.2.31
1.2.32
1.2.33
1.2.34
1.2.35
1.2.36
1.2.37
1.2.38
1.2.39
1.2.40
1.2.41
1.2.42
1.2.43
Valid result
Protection
level
EEP- 1A
EEP- 2A
EEP- 4A
EEP- 1B
Encoding
rate
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
Audio
mode
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Data rate
SBR
72
80
88
96
128
136
56
64
72
80
88
96
192
32
64
96
32
96
144
32
96
192
32
96
SBR
SBR
SBR
SBR
PS
SBR
SBR
PS
SBR
PS
SBR
PS
SBR
PS
48
Sub area
Test number
Test
description
DAB mode
1.2.44
1.2.45
1.2.46
1.2.47
1.2.48
1.2.49
1.2.50
1.2.51
1.2.52
1.2.53
Valid result
Protection
level
EEP- 2B
EEP- 3B
EEP- 4B
Encoding
rate
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
48kHz
Audio
mode
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Stereo
Data rate
160
32
96
192
32
96
192
32
96
192
SBR
PS
SBR
PS
SBR
PS
SBR
PS
49
8.0 DAB Channels and Services
Sub area
Multiple sub-channels
Multiple components
Test
number
2.1.1
2.2.1
Test description
Valid result
Ensure that the receiver can tune to an ensemble with 32 primary
audio components (all pointing to different sub-channels), list all
components and that all components play out audio
All 32 components are available to the user and all
components play out audio
Ensure that the receiver can tune to an ensemble with 50 mixed audio
DAB and DAB+ and data components, list all components that the
receiver handles and that all handled components are handled correctly
The receiver should display and handle all
supported components.
Ensure that the receiver can tune to an ensemble with DAB primary
component with a DAB secondary component
Any unsupported components should be hidden
from the user - e.g. if data is not supported
The receiver should display and handle all
supported components.
Ensure that the receiver can tune to an ensemble with DAB primary
component with a DAB+ secondary component
Any unsupported components should be hidden
from the user - e.g. if data is not supported
The receiver should display and handle all
supported components.
Ensure that the receiver can tune to an ensemble with DAB+ primary
component with a DAB+ secondary component
Any unsupported components should be hidden
from the user - e.g. if data is not supported
The receiver should display and handle all
supported components.
2.3.1
Secondary audio components
2.3.2
2.3.3
Any unsupported components should be hidden
from the user - e.g. if data is not supported
50
Sub area
Test
number
Test description
Valid result
Ensure that the receiver can tune to an ensemble with DAB primary
audio component with 10 data secondary component
The receiver should display and handle all
supported components.
Ensure that the receiver can tune to an ensemble with DAB primary
component with a data secondary component
Any unsupported components should be hidden
from the user - e.g. if data is not supported
The receiver should display and handle all
supported components.
Ensure that the receiver can tune to an ensemble with DAB+ primary
component with a data secondary component
Any unsupported components should be hidden
from the user - e.g. if data is not supported
The receiver should display and handle all
supported components.
2.4.1
Secondary data components
2.4.2
2.4.3
Reselection (if service following algorithm
is available then see the
automotive tab within this
document)
MFN support
2.5.1
2.6.1
When tuned to a primary component ensure that the receiver can
recover and play out audio automatically after losing the signal
temporarily (10 or more seconds)
Any unsupported components should be hidden
from the user - e.g. if data is not supported
As the radio loses and regains the service some
amount of noise might be heard depending upon
the algorithm and PREFERENCE of the
manufacturer. The radio will output audio within 3
seconds of the RF being available again.
In a location where multiple instances of the same ensemble can be
seen on difference channels ensure that when a service is initially
selected the strongest (in RF terms) of the available channels is selected
The strongest channel will be selected regardless
of where the channel sits in terms of sequence of
channels within the DAB band(s)
51
Sub area
Test
number
Test description
Valid result
2.6.2
In a region where multiple instances of the same ensemble can be seen
on different channels, and the broadcasters are supporting this with FIG
0/21 information, ensure that if the receiver is moved from a location
where only 1 channel can be seen to another region where only a
different channel can be seen then the radio will reselect the same
service on the different channel without the user needing to select it
The service will be tuneable in either location
without user intervention (provided the radio has
a 'last listened' function as standard on turning on)
In a location where multiple instances of the same service, (SId
matching), can be seen on different channels ensure that one of the
services is selected
One of the versions of the services will be selected
2.7.1
This could be implemented using FIG0/24 information from the
broadcast or by having seen all linked services following a scan
When a receiver is moved from one location to another and another
instance(s) of a duplicate service can subsequently be received then the
radio must be capable of selecting the alternative duplicated service
either automatically or via a new scan.
Duplicate handling
The services can be accessed in either location
post discovery
2.7.2
2.8.1
The receiver will display a 16 character component label when one is
present
2.8.2
The receiver will display a 16 character service label when no
component label is present
Service information checking
Component label displayed correctly in supported
forms i.e. long and short form.
Long form is the preferred version to display
Service label displayed correctly in supported
forms i.e. long and short form
Long form is the preferred version to display
52
Sub area
Test
number
2.8.3
Test description
The receiver will display static program type when present
Valid result
Program type displayed correctly
53
9.0 Reconfigurations
Sub area
Test
number
3.1.1
3.1.2
Adding a secondary
component
3.1.4
3.1.5
3.1.5
3.2.1
Removing a secondary
component
3.2.2
Test description
Add a DAB secondary audio component when a DAB No interruption to service, new component can now be found within
primary audio component is selected
service list
Add a DAB secondary audio component when an
existing DAB secondary audio component is
selected
Add a secondary data component when a primary
DAB audio component is selected
Add a secondary DAB+ audio component when a
primary DAB+ audio component is selected
Add a secondary data component when a primary
DAB+ audio component is selected
Remove a secondary audio component when a
primary audio component is selected
Remove a secondary audio component when an
alternative existing secondary audio component is
selected
Remove a secondary audio component when the
component to be removed is selected
3.2.4
Valid result
No interruption to service, new component can now be found within
service list
No interruption to service, new component can now be found within
service list if data services are supported
No interruption to service, new component can now be found within
service list
No interruption to service, new component can now be found within
service list if data services are supported
No interruption to service
Confirm that the radio has handled the removal of the secondary
component
No interruption to service
Confirm that the radio has handled the removal of the secondary
component
If the related Primary component of the same service is an audio
component then the receiver falls back to this component: if the
primary component is a data component then mute the receiver
Confirm that the radio has handled the removal of the secondary
component
54
Sub area
Test
number
3.2.6
3.2.7
Test description
Remove a secondary data component when a
primary audio component is selected
Remove a secondary audio component when an
alternative existing secondary DAB+ audio
component is selected
Remove a secondary DAB+ audio component whilst
the component to be removed currently selected
3.2.8
3.3.1
Remove an audio service that is currently selected
and also has no secondary components
Remove an audio service with its primary
component currently selected that does have
secondary components
Removing a service
3.3.2
Valid result
No interruption to service.
Confirm that the radio has handled the removal of the secondary
component
No interruption to service
Confirm that the radio has handled the removal of the secondary
component
If the related Primary component of the same service is an audio
component then the receiver falls back to this component: if the
primary component is a data component then mute the receiver.
Confirm that the radio has handled the removal of the secondary
component
Service is lost.
(if service following algorithm is available then see the automotive tab
within this document)
Service with all components is lost.
Confirm that the radio has handled the removal of the service and
components
(if service following algorithm is available then see the automotive tab
within this document)
55
Sub area
Test
number
Test description
Remove an audio service with one of its secondary
components currently selected
Moving CU locations
3.4.2
3.4.3
Moving the start CU of the service selected to a
position that is ahead of where it started but still
overlaps the previous CU's used
Moving the start CU of the service selected to a
position that is ahead of where it started and none
of the new location overlaps the previous CUs used
Moving the start CU of the service selected from
using CU 0 to using the last CU
(if service following algorithm is available then see the automotive tab
within this document)
No interruption to service
No interruption to service
No interruption to service
No interruption to service
3.5.1
Moving the start CU of the service selected from
using the last CU to using CU 0
Full Rate DAB Component increases bit rate from
128kbps@UEP-3 to 192kbps@UEP-3
No interruption to service
3.5.2
Full Rate DAB Component decreases bit rate from
192kbps@UEP-3 to 128kbps@UEP-3
Half Rate DAB Component increases bit rate from
128kbps@UEP-3 to 160kbps@UEP-3
No interruption to service
3.5.3
Half Rate DAB Component decreases bit rate from
No interruption to service
3.4.4
Bit rate and audio encoding
rate changes
Service with all components are lost.
Confirm that the radio has handled the removal of the service and
components
3.3.3
3.4.1
Valid result
3.5.4
No interruption to service
56
Sub area
Test
number
Test description
Valid result
160kbps@UEP-3 to 128kbps@UEP-3
48kHz DAB+ Component increases bit rate from
128kbps@EEP-3A to 192kbps@EEP-3A
Only a minor break (<1 second) of breakup
3.5.5
48kHz DAB+ Component decreases bit rate from
192kbps@EEP-3A to 128kbps@EEP-3A
Only a minor break (<1 second) of breakup
3.5.6
Full Rate DAB Component increases protection level
from 128kbps@UEP-4 to 128kbps@UEP-3
Half Rate DAB Component decreases protection
level from 128kbps@UEP-3to 128kbps@UEP-4
48kHz DAB+ Component increases protection level
from 96kbps@EEP-4A to 96kbps@EEP-1A
Change the service label when connected to the
primary component
No interruption to service
Change the service label when connected to the
secondary component
If only the component label is visible then no change should be noticed.
If the service label is also shown then this will be seen to change. In
either case there will be no interruption to the audio service
Change the primary component label when
connected to the primary component
If the component label is visible then the change should be noticed.
If the service label is also shown then this will not have changed.
In either case there will be no interruption to the audio service
3.6.1
Protection level
3.6.2
3.6.3
3.7.1
Service/Component label
changes
3.7.2
3.7.3
No interruption to service
No interruption to service
If only the component label is visible then no change should be noticed.
If the service label is also shown then this will be seen to change. In
either case there will be no interruption to the audio service
57
Sub area
Test
number
Test description
Change the secondary component label when
connected to the secondary component
If the component label is visible then the change should be noticed.
If the service label is also shown then this will not have changed.
In either case there will be no interruption to the audio service
DAB Primary Component increases bit rate from
128kbps@UEP-3 to 160kbps@UEP-3 & loses
32kbps@UEP-3 DAB Secondary
- DAB Primary selected
No interruption to service.
DAB Primary Component increases bit rate from
128kbps@UEP-3 to 160kbps@UEP-3 & loses
32kbps@UEP-3 DAB Secondary
- DAB Secondary selected
The receiver falls back to the primary component of the service that the
secondary component was associated with or mutes the receiver.
DAB Primary Component decreases bit rate from
160kbps@UEP-3 to 128kbps@UEP-3 & adds in a
32kbps@UEP-3 DAB Secondary
- DAB Primary selected
No interruption to service.
Only a minor break (<1 second) of breakup
3.8.4
DAB+ Primary Component increases bit rate from
128kbps@EEP-3A to 160kbps@ EEP-3A & loses
32kbps@ EEP-3A secondary - Primary selected
DAB+ Primary Component changes sample rate
from 32khz to 48khz
Only a minor break (<1 second) of breakup
3.9.1
3.7.4
3.8.1
3.8.2
Combined changes
3.8.3
Audio parameter changes
Valid result
Confirm that the radio has handled the removal of the secondary
component
Confirm that the radio has handled the removal of the secondary
component
Record whether new secondary component has been added to the
service list
Confirm that the radio has handled the removal of the secondary
component
58
Sub area
Test
number
Test description
Valid result
Only a minor break (<1 second) of breakup
3.9.2
DAB+ Primary Component changes audio mode
from Mono to Mono with SBR
DAB+ Primary Component changes audio mode
from Mono with SBR to Stereo with SBR
Only a minor break (<1 second) of breakup
3.9.3
DAB Primary Component changes sample rate from
24kHz to 48kHz
Only a minor break (<1 second) of breakup
3.9.4
No interruption to service.
3.9.5
DAB Primary Component changes audio mode from
mono to Stereo
DAB Primary Component changes audio mode from
Stereo to joint Stereo
No interruption to service.
3.9.6
59
10.0 DLS
Sub area
Test
number
4.1.1
Transport
methods
4.1.2
4.1.3
4.1.4
Maximum
length DLS
4.2.1
Minimum
length DLS
4.3.1
4.4.1
Special
characters
Test description
Receiver will be able to receive and display text carried within a
service with full rate audio encoding using short xpad
Receiver will be able to receive and display text carried within a
service with half rate audio encoding using short xpad
Receiver will be able to receive and display text carried within a
service with full rate audio encoding using variable xpad
Receiver will be able to receive and display text carried within a
service with half rate audio encoding using variable xpad
Receiver will be able to receive and display a 128 single byte
character long string of text carried within pad
(Charset = EBU)
Receiver will be able to receive and display which is only 1
character long carried within pad
Receiver will be able to receive and handle an end of headline
special character (0x0B)
Receiver will be able to receive and handle a preferred word
break special character (0x1F)
4.4.2
The word break character needs to be placed in the DLS text string
such that the character can be utilised by the display on the
receiver where possible
Valid result
DLS is displayed correctly, and the scroll rate if applicable enables the
text to easily be read
DLS is displayed correctly, and the scroll rate if applicable enables the
text to easily be read
The single character is displayed correctly
If supported by the display on the receiver the end of headline character
will be handled correctly
The special character will never be displayed
If supported by the display on the receiver the preferred word break
character will be handled correctly and the word will be broken in the
correct location
The special character will never be displayed regardless of whether the
receiver needs to support it or not
60
Sub area
Test
number
Test description
Receiver will be able to receive and handle a preferred line break
special character (0x0A)
4.4.3
DLS clear
4.5.1
The line break character needs to be placed in the DLS text string
such that the character can be utilised by the display on the
receiver where possible
The receiver will correctly handle a DLS clear command
Valid result
If supported by the display on the receiver the preferred line break
character will be handled correctly and the line will be broken in the
correct point in the text string
The special character will never be displayed regardless of whether the
receiver needs to support it or not
When a DLS clear command is received then the receiver will stop
displaying the current DLS irrespective of the point in which it is scrolling
61
11.0 Character Sets
Sub area
Test
number
EN 62106:2009 [xx] Basic RDS character set also known as the
Complete EBU Latin based repertoire) (specification 5)
5.1.1
UCS-2 encoding of EN 62106:2009 [xx] Basic RDS character set
also known as the Complete EBU Latin based repertoire)
(specification 5)
5.2.1
UTF-8 encoding of EN 62106:2009 [xx] Basic RDS character set
also known as the Complete EBU Latin based repertoire)
(specification 5)
5.3.1
Test description
The receiver will support the display of all characters from the
character set.
The mode for the characters being transmitted could be within
DLS strings or ensemble/service/component labels
The receiver will support the display of all characters from the
character set encoded as UCS-2.
The mode for the characters being transmitted could be within
DLS strings or ensemble/service/component labels
The receiver will support the display of all characters from the
character set encoded as utf-8.
The mode for the characters being transmitted could be within
DLS strings or ensemble/service/component labels
Valid result
All characters will be
displayed correctly
All characters will be
displayed correctly
All characters will be
displayed correctly
62
12.0 Scanning and Tuning
Sub area
Scanning
Test
number
6.1.1
A new multiplex
launches
6.2.1
Multiplex changes
frequency
6.3.1
Manual tuning
Service move to a
new multiplex
6.4.1
6.5.1
Test description
Run a full band 3 scan (excluding the N channels) and ensure that
all supported services available from all ensembles seen within the
band are stored
After running a scan in 6.1.1 locally transmit another DAB signal on
a channel not currently in use and then re-run test 6.1.1 and
ensure that the new ensemble has been added to the list
Alter the channel used by the ensemble that was added within
tests 6.2.1 to yet another currently unused channel and then rerun test 6.1.1
This test assumes that the ensemble is switched and not simulcast
for a transition period
Ensure that all 38 band 3 channels are available to choose from.
Select one channel known to have an ensemble contained on it
and select to manually.
Scan and find 2 ensembles (on 2 different channels)
Select a service on 'a' channel, reconfigure the ensemble on this
channel to lose this service.
Simultaneously reconfigure the 'other' ensemble on the 'other'
channel to add the service (same service details apart from the
containing ensemble)
Valid result
All supported services are available to the user and work correctly
(i.e. play audio if an audio service)
All supported services are available to the user and work correctly
(i.e. play audio if an audio service) including those of the new
ensemble
All supported services are still available and only one iteration of
the ensemble is listed.
All supported services on the ensemble are available to the user
and work correctly (i.e. play audio if an audio service).
Manual tune to the 'other' channel, scan the whole band or select
another service on the 'other' ensemble then the moved service is
now available on the 'other' channel/ensemble
63
13.0 Performance Related
Sub area
Conducted
sensitivity
Test
number
7.1.1
7.1.2
7.1.3
7.1.4
7.1.5
7.1.6
7.1.7
7.1.8
7.1.9
7.1.10
7.1.11
7.1.12
7.1.13
7.1.14
7.1.15
7.1.16
7.1.17
7.1.18
7.1.19
7.1.20
7.1.21
7.1.22
7.1.23
7.1.24
7.1.25
Channel
5a
5b
5c
5d
6a
6b
6c
6d
7a
7b
7c
7d
8a
8b
8c
8d
9a
9b
9c
9d
10a
10b
10c
10d
11a
Test description
Test method in accordance with BS:EN62104:2007 (Characteristics of DAB
receivers) (specification 4)- latest version at all times - currently section
7.3.1.1 Sensitivity, method of measurement (Gaussian Channel) perform
the measurement on 38 channels within band 3: 5a to 13f
Valid result
Targets are set by DRAP Minimum
Specifications (specifications 1 and 2) and not
taken from BS:EN62104:2007 (specification 4)
64
Sub area
Sensitivity using
UEP-3 protection
Test
number
7.1.26
7.1.27
7.1.28
7.1.29
7.1.30
7.1.31
7.1.32
7.1.33
7.1.34
7.1.35
7.1.36
7.1.37
7.1.38
7.1.4
Channel
11C
12b
7.2.2
Valid result
11b
11c
11d
12a
12b
12c
12d
13a
13b
13c
13d
13e
13f
7.2.1
Fading testing
Test description
Set up a stream with the following parameters: UEP-3 / music (royalty free)
/ stereo / 128kbit/s stream / -97.7dBm to be conducted on channel 11C,
Test method in accordance with BS:EN62104:2007 (Characteristics of DAB
receivers) (specification 4)- latest version at all times -currently section
7.3.4 Performance in a Rayleigh Channel to perform the measurement on
channel12B as specified
“Using a listening test (or equivalent method)
in a period of least 10 seconds the sound image
should be substantially intact and
recognisable”.
Targets are set by DRAP Minimum
Specifications (specifications 1 and 2) and not
taken from BS:EN62104:2007 (specification 4)
for
Urban
Targets are set by DRAP Minimum
Specifications (specifications 1 and 2) and not
taken from BS:EN62104:2007 (specification 4)
for Rural
65
Sub area
Test
number
Channel
Test description
Targets are set by DRAP Minimum
Specifications (specifications 1 and 2) and not
taken from BS:EN62104:2007 (specification 4)
for SFN
7.2.3
ACR
7.3.1
7.3.2
7.3.3
7.3.4
7.3.5
7.3.6
7.3.7
7.3.8
7.3.9
7.3.10
7.3.11
7.3.12
7.3.13
7.3.14
7.3.15
7.3.16
7.3.17
7.3.18
7.3.19
7.3.20
7.3.21
7.3.22
Valid result
5a
5b
5c
5d
6a
6b
6c
6d
7a
7b
7c
7d
8a
8b
8c
8d
9a
9b
9c
9d
10a
10b
Test method in accordance with BS:EN62104:2007 (Characteristics of DAB
receivers) (specification 4)- latest version at all times -currently section
7.3.3.1 Adjacent Channel Selectivity - perform upper and lower ACR tests
for the 1st 2nd and 3rd adjacents for all 38 channels within band 3 where
the channel spacing is 1.712MHz
Targets are set by DRAP Minimum
Specifications (specifications 1 and 2) and not
taken from BS:EN62104:2007 (specification 4)
for 1st, 2nd and 3rd adjacent channels for upper
and lower values
66
Sub area
Test
number
7.3.23
7.3.24
7.3.25
7.3.26
7.3.27
7.3.28
7.3.29
7.3.30
7.3.31
7.3.32
7.3.33
7.3.34
7.3.35
7.3.36
7.3.37
7.3.38
7.3.39
Channel
Test description
Valid result
The UK Minimum Specification has a required level of adjacent channel
rejection across the band. In order to extend the range of testing for ACR,
the methodology used is as defined within BS:EN62104:2007
(Characteristics of DAB receivers) (specification 4) but with a wider range of
interferers. Setup each channel in turn as the wanted and perform a go-nogo test with the interferers set at the target limit as if testing for the 3rd
adjacent interferer.
The interferers to be tested per channel will be the far adjacent channels
from n+/-4 and beyond, to the extent of the band (i.e. to 5A and 13F but no
further).
The BER will be ≤ 0.0001 or as per OOI within
the Per Product Test Spec (not yet released –
(specification 3) ) there will be no more than
one impairment observable in a 10 second time
period
10c
10d
11a
11b
11c
11d
12a
12b
12c
12d
13a
13b
13c
13d
13e
13f
ALL 38
channels
affected
67
Sub area
Test
number
7.3.40
7.3.41
Channel
12b
wanted
12b
wanted
Test description
Ensure that in situations where there is a strong 1st adjacent channel
present (upper and lower) that all ensembles can be seen during a scan
Low power test wanted set at -90dBm adjacents both set at 30dB greater RF levels
Ensure that in situations where there is a strong 1st adjacent channel
present (upper and lower) that all ensembles can be seen during a scan
High power test wanted set at -50dBm adjacents both set at 30dB greater RF levels
Valid result
All ensembles are seen.
All ensembles are seen.
68
14.0 Automotive Specific
To align with section 10.1 within the minimum in-vehicle receiver specification (specification 2), any radio adapter with the sole purpose of converting an analogue
receiver to digital is not required to pass tests: 8.2.6, 8.2.7, 8.2.8, 8.2.9, 8.3.5 and all of sections 8.4 and 8.5
Sub area
Test
number
8.1.1
SFN following
8.1.2
8.2.1
8.2.2
Service following
8.2.3
8.2.4
Test description
With an SFN set up correctly within the lab ensure that a radio can be switched
between transmitters on the SFN without any interference to the radio
8.1.1 could be tricky to setup so using a route that is known to move between
one transmitter and another on an SFN take the radio on a drive and ensure
that there is no breakup in audio as the radio follows the SFN
Follow an implicit link linking 2 DAB services on different channels via just the
DAB Sid
Follow a hard link linking 2 DAB services on different channels where the DAB
SIds do not match and the linkage information is extracted via FIGs 0/6, 0/21
and 0/24 and also when the Linkage Actuator flag is set to 1 (activated)
Do not follow a hard link where 2 DAB services on different channels with nonmatching SIds but have linkage information extracted via FIGs 0/6, 0/21 and
0/24 and where the Linkage Actuator flag is set to 0 (de-activated)
Soft link: Switch from Hard link to Soft link
Similar to 8.2.3 but
offer a soft link alternative when hard and soft links are available and the hard
links have been marked inactive. A soft linked alternative must be available
Valid result
No breakup in audio is ever heard
No breakup in audio is ever heard
The radio will follow the link without intervention from
the user
The radio will follow the link without intervention from
the user
The radio will NOT alter the station that it is tuned to
The radio will offer soft link alternative to the lost service.
The radio will not follow without user selection, this can
be at the point of loss or by overriding menu choice to
automatically select soft linked options
69
Sub area
Test
number
8.2.5
8.2.6
8.2.7
8.2.8
8.2.9
8.3.1
8.3.2
Announcements
8.3.3
8.3.4
Test description
Linkage Set toggle – check that brief deactivations do not lose the linkage
database
Follow a hard link which has recently been deactivated and then reactivated. In
the first 5 seconds after the hard linkage has been reactivated (within the
stream being broadcast) the RF is removed. A hard linked alternative must be
available
Follow an implicit link linking a DAB to an FM service via just the Sid and FM PI
Follow a hard link linking a DAB service and FM service on where the ids do not
match and the linkage information is extracted via FIGs 0/6 and 0/21
Following a link from DAB to FM ensure that if further linking is needed and a
linked to DAB service recovers then the PREFERENCE will be to return to the
DAB service even if another FM alternative is present
Correctly interpret a dead-ended implicit link to FM
Ensure that the radio can respond to and play out an announcement indicated
as traffic and using a supported cluster id where the radio is tuned to the
correct service before the announcement is signalled
Ensure that the radio can decline an announcement where the announcement
type and cluster id are not supported/selected/set
When not currently in DAB mode and the previously tuned DAB service had
announcement support indicated with fig0/18 then the current audio mode
(CD,USB etc.) shall respond to announcements as if tuned to the previously
tuned service and the current audio will be interrupted
Ensure that if announcement support is available on the DAB service (as
indicated with fig0/18) then the Radio shall not respond to any FM
announcements that are available.
Valid result
The radio will follow the hard link without intervention
from the user.
The radio will follow the link without intervention from
the user
The radio will follow the link without intervention from
the user
The radio will always return to DAB if it is possible to do
so and when needed to do so
Radio will not link to the FM station even though the Sid =
the PI
The announcement is played out fully and the radio
returns to the previously tuned service when the
announcement stops
The radio plays out from the previously tuned service and
remains uninterrupted by the announcement
The announcement is played out and the radio returns to
the previous audio mode (CD, USB etc.) when the
announcement stops
Announcements on FM services shall be ignored
70
Sub area
Test
number
8.3.5
8.3.6
8.3.7
8.4.1
8.4.2
FM RDS
8.4.3
8.4.4
8.4.5
AM
8.5.1
Test description
If announcement support is NOT available on the DAB service then the Radio
may respond to any FM announcements that are available (providing this is not
an implicit link i.e. SId = PI)
Ensure that if the RF signal is lost for a short enough period of time for the
announcement to still be present, the radio can recover and continue to play
the announcement
Ensure that if the RF signal is lost for a period of time longer than the
announcement has left to run the radio can recover and continue to play the
previously tuned service.
FM RDS labels mentioned merely to indicate same/similar functionality as FM
needed in DAB (tests 2.8.1 and 2.8.2)
Valid result
Announcements on the FM services may be played out
and the radio returns to the previously tuned service
when the announcement stops
The radio re-starts playing the announcement when the
RF source is regained
The radio plays out from the previously tuned service
when the RF source is regained
FM RDS pty mentioned merely to indicate same/similar functionality as FM
needed in DAB (test 2.8.3)
FM RDS Radiotext mentioned merely to indicate same/similar functionality as
FM needed in DAB (section 4)
FM RDS PI code covered within the service following tests 8.2
FM RDS TA/TP only mentioned in terms of linked DAB and FM services having
to be aligned by the broadcaster. For DAB testing the DAB information is always
used and not the FM link
Ensure that the radio tunes to an over the airwaves AM radio service
Audio plays without any issues
15.0 FM (analogue) radio
As stated in specifications 1 and 2, any radio adapter with the sole purpose of converting an analogue receiver to digital is not required to pass test 9.1.1.
71
Sub area
Test
number
FM
9.1.1
Test description
Select 3 FM radios stations in the location where testing is taking place and tune to each and
listen. For the UK the suggestion is Radio1 (pop), Radio 4 (talk) and ClassicFM (classical)
Valid result
Audio plays for 5 minutes on each service
without any interruptions or audio artefacts
72
73
SPECIFICATION 4
Per Product Test Specification
For receiver manufacturers (silicon/module manufacturers)
This specification describes how the individual “Per Product” parts of a receiver which determine the end performance
should be tested.
CompleteReceiver
ReceiverProducts
Product
Finished
Common Technology
Per Product Technology


User Interface
Responses
Radio Performance


Tuner / Decoder part
Functional & Non Radio
parts
74
18.0 Introduction
This document should be read by any receiver manufacturer wishing to prove they meet the requirements for use of the
tick mark. For any further information on the process for applying to be granted use of the tick mark please visit
www.getdigitalradio.com/industry.
Please note – for all other aspects of testing that will apply to the receiver the reader needs to reference the Technology
Provider Test Specification.
Please note – these tests are not designed to be exhaustive. The tests are designed to prove that the receiver meets the
criteria for the UK Minimum Specification.
If you have any questions about these test specifications please email tickmark@digitalradiouk.com.
The following types of DAB receiver are currently covered by the Minimum Receiver Specification. Receiver types which
come about in the future – or otherwise not listed here – will also be addressable by application of the test methods
where appropriate. The descriptions in 1- 5 below are intended to clarify the meaning for each receiver type
specification and are not meant to constrain the applicability of the document.
1) Transportable systems – for example HIFI and micro systems which may or may not include audio sources such as
portable music players or CD players etc.
2) Portable receivers – for example “lounge” or “kitchen” receivers.
Transportable and portable receiver’s configurations (1 and 2 above) will include (but not be limited to) the following
capabilities and features:






Rigid whip antennas or free wire antennas
Built-in user interfaces with input finger control and visual displays
Connectorised antenna inputs or not connectorised (i.e. fixed antenna)
Mains powered, mains/adapter powered through a DC input socket or battery powered, or optionally any of
these
Loudspeaker(s) for audio output
Optional audio headphone and line output
3) Hand portable or pocket receivers will include (but not be limited to):



Mains / adapter powered through a DC input socket or battery powered or both
May have integral antenna (if you are using the headphone lead as the antenna please email
tickmark@digitalradiouk.com)
With headphones and with or without a loudspeaker output
75
4) Self-contained aftermarket vehicle receivers (i.e. automotive accessories) will include (but not be limited to):




Vehicle powered in the range 8 – 32 VDC
With user interface in-built or part of the overall equipment provided
With audio speaker, line-out or audio output capability as part of the overall equipment
With permanently fixed antenna or optional connector for the antenna input
5) Self-contained in-vehicle receivers for OEM and aftermarket fitments e.g. 1-DIN fitments will include (but not be
limited to):



User interface in-built or part of the overall equipment provided
Only with a connector for the antenna input
With line-out and / or external speaker connectors
18.1 Specification references
1
Domestic Minimum Receiver Specification (DRAP TEG Minimum Specifications for DAB &
DAB+ Personal & Domestic Digital Radio receivers. DRAP-TEG-002 V0_9)
2
In Vehicle Minimum Receiver Specification (DRAP TEG Minimum Specifications for DAB &
DAB+ In-Vehicle Digital Radio Receivers and Adapters. DRAP-TEG-03 V00_6)
3
Technology Provider Test Matrix
4
IEC 61000-4-3 “Test and Measurement Techniques – Radiated , radio frequency,
electromagnetic field immunity test”
5
CISPR 16-2-3 “Methods of Measurement…”
6
Methods of Measurement of Radio Noise Emissions from L.V. Electrical And Electronic
Equipment in the range 9kHz to 40GHz. ANSI C63.4-2003, p18-46
7
BS EN 62104:2007 Characteristics of DAB Receivers
8
ETSI EN 300 401 Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) to Mobile,
Portable and Fixed receivers
9
ETSI TS 101 756 Digital Audio Broadcasting (DAB); Registered Tables
10
ETSI TS 102 563 Digital Audio Broadcasting (DAB); Transport of Advanced Audio Coding (AAC)
audio
76
11
ETSI TS 103 176 (2013-07) Digital Audio Broadcasting (DAB); Rules of implementation; Service
information features
18.2 Product design targets versus test criteria
Receiver products will be designed to meet the performance goals as provided in specifications 1 and 2. Products will be
tested against limits provided in this document, using calculated measurement margins. This philosophy will ensure that
receivers at the design limits can achieve the correct performance criteria to be granted use of the tick mark.
18.3 Applicability of the Tests
All types of receivers are required to pass the functional tests described in Appendix A. The only exception to this rule is
that in-vehicle receivers are not required to pass the DLS requirement.
Receivers shipped with an antenna – either fixed or detachable – are required to pass the radiated sensitivity test, as
described in Appendix C section C.6
Receivers shipped without any antenna are required to pass the conducted sensitivity tests, as described in Appendix C
section C.5
18.4 Objectives for “Per Product” Testing.
In a finished receiver product, the user interface behaviour is dependent not only on the quality of design and
implementation of the core technology but also the implementation by the end receiver manufacturer.
Secondly, the antenna and radio performance is dependent on the quality of design and implementation of the core
technology, the options implemented by the receiver manufacturer will be variable from sample to sample – due to the
inevitable differences in the manufacturing involved in the final receiver which can affect (e.g. antenna gains and selfinterference.)
Therefore a fully representative sample of each type of final receiver – such as the consumer would obtain from retail
outlets – must be tested for station tuning, user display appearance (functional part) and receiver radio sensitivity at the
antenna of the receiver. If you are unsure about this please email tickmark@digitalradiouk.com.
18.5 Objectives and Test Methods for Functional Service Part
The objectives are to discover if a receiver can meet the standards of performance in the functional aspects of:



Tuning and retuning of a station, or Service
Correct displaying of Service Label
Correct display of DLS (Dynamic Label Segment) – for domestic receivers only
77
The test method is described in Appendix A
In order to perform these tests, it will be necessary to use specific ETI test streams, as provided by the DIGITAL RADIO
UK. Please register your interest in obtaining these ETI files with the DIGITAL RADIO UK. These ETI files are described in
Appendix B.
18.6 Objective and Test Method for the Radio and Antenna Part
The objective is to discover if a receiver can meet the standards of performance for either the:


Conducted radio sensitivity as measured at an input connector (such as an F-type connector)
o In vehicle receiver
Free field radio sensitivity by measuring the performance with a signal induced at the antenna
o Domestic receiver
The test method is described in Appendix C
These tests above in Appendices A and C will require very specialized test equipment and knowledge specific to radio
product testing and will require a test facility which is accredited to DRAP standards.
The technical standards for the test facility for the tests within Appendix C are described in Appendix D.
This is included as they determine the quantitative performance assessment for sensitivity, in terms of dBuV/m.
In order to complete the Per Product Test Specification Digital Radio UK recommends that receiver manufacturers use
an accredited test house, to test receivers against the Per Product Test. Digital Radio UK will return all applications –
which have gone through an accredited test house – within 7 days.
If you would like to find out about the currently available accredited test houses, or if you would like to apply to become
an accredited test house, please email tickmark@digitalradiouk.com.
The test methods specified in Appendices A and C are strongly recommended to be used for testing. Any deviation from
these test methods must be agreed with Digital Radio UK, before testing is carried out, and test results are submitted for
compliance with the tick mark.
Appendix A - functional tests
19.0 Technical information
78
A.1 Introduction
This method description forms part of the final receiver product test for the user interface responses.
CompleteReceiver
ReceiverProducts
Product
Finished
Common Technology
Per Product Technology


User Interface
Responses
Radio Performance


Tuner / Decoder part
Functional & Non Radio
parts
A.2 Downloadable Test Streams
Please email tickmark@digitalradiouk.com for the ETI test streams: DRAP-TEG-TESTSTREAM-001_V0.5.eti.7z and DRAPTEG-TESTSTREAM-002_V0.5.eti.7z.
A.3 Test Requirements
The receiver will be exposed to the test streams and the behaviour of the receiver will be verified.
The results will be documented according to the format in section A.11.
A.4 User Interface Tests
The testing will consist of 6 tests, given in sections A 5 to A.12 , the aims of which are:





To ensure that the receiver can tune to, and identify an ensemble in Band-3, and play an audio service
To ensure that the receiver can correctly add another ensemble in Band-3 to the service list
To ensure that the user interface for scanning meets the requirements of the Minimum Receiver
Specification
To ensure that service labels are displayed correctly
To ensure that DLS messages are displayed correctly (except for in-vehicle receivers. Please note: DLS is not
a requirement for in-vehicle receivers)
A.4.1 Approach to running these tests
79
The tests start at section A.5 – and work through 6 tests, in order. As such, the state of the radio, and whether turned
on or off, are included as part of the steps. This ensures that the subsequent tests start in the state needed for the next
test.
A.4.2 Test equipment needed
Please email tickmark@digitalradiouk.com for details if you are unsure of which ETI files to use.



Signal generator suitable for playing an ETI file and for generating a range of RF output from ~-20dBm to -50dBm
Suitable telescopic antenna attached to the signal generator or
Other means to couple the signal to the receiver antenna input ensuring that the signal at the receiver is strong
enough.
A.5 Test Setup and Preparation – part 1

Identify 2 DAB channels that are currently unused within the test vicinity. For the purposes here these will be
labelled:
o DAB_channel_1
o DAB_channel_2
 Setup the signal generator and start playing stream DRAP-TEG-TESTSTREAM-001_V0.5.eti.7z
 Set the RF level to a suitable for the receiver to tune (i.e. a strong signal e.g. -50dBm)
o The aim is to set the level so that the receiver will tune without any errors occurring
 Set the signal generator to DAB_channel_1
 Turn on the receiver
 Either reset the receiver to clear the service list or confirm that none of the services in the test streams already
currently reside in the service list on the receiver
 Leave the receiver in an ‘on’ state
A.6 Test 1 – “DRAP-Tick-Fcn-Test-1 scan add new services”

Objective
o To prove that the receiver can recover and show all services within an ensemble and that the method
for initiating the scan meets the requirements of the DRAP Minimum Receiver Specifications.
o The DRAP documents expect that the initiating of a scan to be as simple as possible.
i.e. The draft DRAP TEG “…DAB & DAB+ Test Specification for Personal & Domestic Digital Radio receivers…”
states “This feature must either be initiated by the press of a single button on the device or, if it is a feature
in a menu structure, it must be in the top level of the menu, or one level down.”

Method
o Run the ” Test Setup and Preparation – part 1” in sect A.5
o On the receiver, initiate a scan
o After the scan completes, navigate to the services and confirm that the service list on the receiver
contains all services defined for DRAP-TEG-TESTSTREAM-001_V0.5.eti.
o Leave the receiver in the ‘on’ state
80

Expected results
o The scan was initiated by the press of a single button on the device or, if it is a feature in a menu
structure, it was in the top level of the menu, or one level down.
o The receiver’s service list must contain all expected services; listing by either long or short label is
acceptable.
A.7 Test 2 – “DRAP-Tick-Fcn-Test-2 play audio and view label for audio service”

o


Objective
To ensure that the receiver can select a service, play out the audio and that the label for the audio
playing is correct
Method
o Run the ”Test 1- DRAP-Tick-Fcn-Test-1 scan add new services” test (sect A.6)
o Navigate through the receiver’s service list and select “Sine”.
o Listen for Audio
o Leave the receiver in the ‘on’ state
Expected results
o “Sine” is labelled as expected
o Audio is played out as expected (a 1kHz tone heard)
A.8 Test 3 – “DRAP-Tick-Fcn-Test-3 DLS is displayed and displayed correctly”
PLEASE NOTE: DLS is not a requirement for in-vehicle receivers.



Objective
o To ensure that the receiver can display a dynamic label and in doing so prove that the display on the
receiver can display the set of characters that have been chosen to represent a set of characters
commonly used by UK broadcasters
Method
o Run the “Test 2- DRAP-Tick-Fcn-Test-2 play audio and view label for audio service” from sect A.7.
o Via the receiver’s information system, navigate to display the dynamic label
o Compare the DLS to the string as detailed within the table DRAP-TEG-TESTSTREAM-001_V0.5.eti.7z in
Appendix B.
o Turn the receiver off.
Expected results
o All characters in the dynamic label are as expected.
A.9 Test setup and preparation – part 2





Run the test 3 – “DRAP_Tick-Fcn-Test-3DLS is displayed correctly test” from sect. A.8.
Turn off the signal generator RF output
Setup the signal generator and start playing stream DRAP-TEG-TESTSTREAM-002_V0.5.eti.7z
Set the signal generator to DAB_channel_2
Set the RF level to a suitable for the receiver to tune i.e. a strong signal e.g. -50dBm
o The aim is to set the level so that the receiver will tune without any errors occurring
81
A.10 Test 4 – “DRAP-Tick-Fcn-Test-4 Scan and add another ensemble”



Objective
o To ensure that the receiver can discover another ensemble and show these new services within
the service list
Method
o Turn on the receiver
o On the receiver initiate a scan
o After the scan completes, navigate to the services and confirm that the service list on the
receiver contains all services defined for DRAP-TEG-TESTSTREAM-002_V0.5.eti
o Turn the receiver off
Expected results
o The receiver’s service list must contain all expected services; listing by either long or short label
is acceptable.
A.11 Test 11 – “DRAP-Tick-Fcn-Test-5 Part 1 Character testing using service labels”



Objective
o To ensure that the receiver can display the minimum required characters when DLS is not
supported via service labels. Both short and long forms used cover the full set of required
characters.
Method
o Setup the signal generator and start playing stream DRAP-TEG-TESTSTREAM-001_V0.5.eti
o Set the signal generator to DAB_channel_1
o Set the RF level to a suitable for the receiver to tune i.e. a strong signal e.g. -50dBm
1. The aim is to set the level so that the receiver will tune without any errors occurring
o Turn on the receiver
o On the receiver initiate a scan
o After the scan completes, navigate to the services and confirm that the service list on the
receiver contains all services defined for DRAP-TEG-TESTSTREAM-001_V0.5.eti.
o Turn the receiver off
Expected results
o
The receiver’s service list must contain all expected services; listing by either long or short label
is acceptable, every character must render correctly.
A.12 Test 12 – “DRAP-Tick-Fcn-Test-5 Part 2 Character testing using service labels”


Objective
o To ensure that the receiver can display the minimum required characters when DLS is not
supported via service labels. Both short and long forms used cover the full set of required
characters.
Method
o Setup the signal generator and start playing stream DRAP-TEG-TESTSTREAM-002_V0.5.eti
82
o
o

Set the signal generator to DAB_channel_2
Set the RF level to a suitable for the receiver to tune i.e. a strong signal e.g. -50dBm
1. The aim is to set the level so that the receiver will tune without any errors occurring
o Turn on the receiver
o On the receiver initiate a scan
o After the scan completes, navigate to the services and confirm that the service list on the
receiver contains all services defined for DRAP-TEG-TESTSTREAM-002_V0.5.eti.
o Turn the receiver off
Expected results
o
The receiver’s service list must contain all expected services; listing by either long or short label
is acceptable, every character must render correctly.
83
Appendix B – Test streams
B.1 DRAP-TEG-TESTSTREAM-001_V0.5.eti.7z
B.1 DRAP-TEG-TESTSTREAM-001_V0.5.eti
This file contains a 120 minute long ETI (NI) test stream and contains the following sub-channels. (Note that there will be a stream discontinuity
at the end of the 120 minute play out file, which will create an audible “glitch” artefact. The stream may be restarted to ensure the stream
provides due continuity during the test period.).
Please note: DLS is not required for in-vehicle receivers; lower case alpha / numeric characters may be mapped to upper case equivalents and
additional graphic symbols if not displayable by the product should be mapped to a space or similar distinctly non alpha / numeric character.
The DLS string in SID C000 contains the code 0x0B (end of headline) at the 32nd position and 0x0A (preferred line break) at the 15th position and
0x1f (preferred word break) at the 12th position; and code 0x1f every eight characters from position 33 to the end.
LABEL: DRAPMUX1 EID: C555
Service label /
SID
Short Label
Bit rate /
Codec
Audio Content
DLS (note: this is not required for in-vehicle receivers)
Sine
128k / MP2/
EEP-3A
1kHz tone
“ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrs
tuvwxyz0123456789£%& !."(),”
128k / MP2/
UEP-3
Royalty free
music*
128k / MP2
1.5kHz tone
“MP2 128kbps 1.5kHz tone”
96k / AAC
2kHz tone
“AAC 96kbps 2kHz tone”
96k / AAC
3kHz tone
“AAC 96kbps 3kHz tone”
Sine / C000
OOI Music /
C001
OOIMusic
AHBGCFDEED
FCGBHA/ C002
ABCDEFGH
IPJOKNLMMLN
KOJPI / C003
IJKLMNOP
QXRWSVTUUT
VSWRXQ /
C004
QRSTUVWX
“OOI Music Source 128k MP2 UEP-3 Stereo”
84
YfZeadbccbdae
ZfY / C005
YZabcdef
96k / AAC
4kHz tone
“AAC 96kbps 4kHz tone”
*The music file is AKMusic AK033-“Good Time Grooves - Jazz n Funk”, track 11 “newyorkskyline”
B.2 DRAP-TEG-TESTSTREAM-002_V0.5.eti
This file contains a two minute long ETI (NI) test stream and contains the following sub-channels.
LABEL: MUX2DRAP EID: C666
Please note: DLS is not required for in-vehicle receivers; lower case alpha / numeric characters may be mapped to upper case equivalents and
additional graphic symbols if not displayable by the product should be mapped to a space or similar distinctly non alpha / numeric character.
The DLS string in SID C006 contains the code 0x0B (end of headline) at the 32nd position and 0x0A (preferred line break) at the 15th position and
0x1f (preferred word break) at the 12th position; and code 0x1f every eight characters from position 33 to the end.
Service label /
SID
Short Label
gnhmiljkkjlimhng
/ C006
ghijklmn
ovpuqtrssrtqupv
o / C007
opqrstuv
w3x2y1z00z1y2
x3w / C008
wxyz0123
4%5£69788796£
5%4 / C009
456789£%
A,&)!(."".(!)&,A /
C00A
A&!."(),
Bit rate /
Codec
Audio Content
DLS
128k / MP2
0.5k tone
“ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstu
vwxyz0123456789£%& !."(),”
128k / MP2
0.8k tone
“MP2 128kbps 0.8k tone”
96k / AAC
0.2k tone
“AAC 96kbps 0.2k tone”
96k / AAC
1.2k tone
“AAC 96kbps 1.2k tone”
96k / AAC
1.4k tone
“AAC 96kbps 1.4k tone”
85
86
Appendix C – Test Method for the Per Product Test, Radio Performance
C.1 Introduction and Objectives
This method description forms part of the final receiver product test for radio performance, to show
that the conducted and radiated sensitivity of a final receiver meets DRAP Minimum Receiver
Specification using a “go / no go” RF power level pass / fail test method. Although looking complex
the test is straightforward and time efficient.
This objective will be carried out using a test method in carefully qualified and accredited test
facilities or by an alternate methodology which is approved by Digital Radio UK for proving receiver
sensitivity “per product”. If you have any questions please email tickmark@digitalradiouk.com.
Complete
Finished Receiver
ReceiverProduct
Products
Common Technology
Per Product Technology


User Interface
Responses
Radio Performance


Tuner / Decoder part
Functional & Non Radio
parts
The testing will consist of one of two elements:
1) A conducted input test for receivers without any antenna in the per product package and a
F-type or similar standard 75 Ω or 50 Ω socket for the RF signal input or
2) A radiated signal test for receivers with a non-removable antenna or a removable antenna in
the per –product package, as the means to couple the radio signal into the receiver.
This section describes the standards for radiated sensitivity testing in two environments
1) Semi Anechoic Room (SAR), Fully Anechoic Rooms (FAR)
2) Large GTEM cell
C.2 The “Onset Of Impairment” Test
The test success / failure criterion is the quality of the audio tone delivered by the receiver, when
supplied with a specifically encoded test stream. DRAP has specified an onset of impairment (OOI)
test method so that a receiver with only an acoustic output – speakers, headphones (etc.) can be
tested.
The method is representative of what the consumer is ultimately interested in - sound quality - and
two tests are specified: 1) A quantitative test using EEP-3A protection and a sine wave, and 2) a
qualitative test using a music stream and UEP-3 protection.
87
The objective of these two tests is that 1) is deemed equivalent to the 1 e-4 BER signal quality point
in the decoded data stream (which uses EEP-3A protection) for DAB MPEG Layer 2 encoding; and 2)
is specifically to check that the radio product supports the predominant actual broadcast protection.
The OOI tests call for the audio signal tones to be monitored for acoustic quality over a 10 second
period for the detection of audio impairments.
Impairment is defined as any recognisable deviation from a constant amplitude audio tone; for
example audio drops or gaps, or bursts of non-programme sound image – sometimes called
“burbles”, “tweets”, “chirps” or “birdies”.
C.2.2 Receiver Configuration Specification Required
Before the test commences, the receiver manufacturer will provide to the test house a Receiver
Configuration Specification (RCS) . This is intended to minimise any measurement differences
between test bodies, by controlling the placement of receiver key physical items and its usage.
It is to the receiver manufacturer advantage to provide diagrams, photos and descriptions for this
purpose.
A description of the relative positioning of these items at least should be included in the RCS:
 Receiver body, antenna, leads, power supply, mains block
A description of the operational states at least should be included in the RCS including:
 Backlight on /off, display activity, menu level, activation of Bluetooth and other ancillaries etc
The receiver manufacturer must state that the RCS is representative of the volume production
capability and realistic worst case for an end user (e.g. that lead and power supplies positionings are
representative and the worst case which could be expected.)
C.3 Standard Test Conditions
C.3.1 Environmental





Ambient Temperature
Relative Humidity
Atmospheric pressure
Mains Voltage
Mains Voltage
15 to 35 Deg C
25 % to 75%
86 kPa to 106 kPa
In UK, 230 V RMS ±10% 50Hz ±6%
Rest of world - according to laboratory norms.
C.3.2 Baseband stream and listening conditions for acoustic OOI testing
This table specifies the conditions which shall be satisfied for OOI sensitivity tests:
EEP-3 Audio Test tone
1 kHz, Sine wave -3dB FS, mono image
MP2 data coding and rate
EEP-3A, 128 kbit/s stream rate.
88
Standard EEP-3a Test Stream
“DRAP-TEG-TESTSTREAM-001_V0.5.eti” “Sine”
UEP-3 Audio Test tone
Royalty free music, 0dBFS, stereo image
MP2 data coding and rate
UEP-3, 128 kbit/s stream rate.
Standard UEP-3 Test Stream
“DRAP-TEG-TESTSTREAM-001_V0.5.eti” “OOI Music”
Audio level at listener ears, equivalent
>75 dBA weighted SPL at 30 cm.
Listening environment for human observer
Quiet room or isolating headphones
C.3.3 Equipment and Test Conditions Required at all Test Facilities
Please note, it is assumed that the Test Facility will be familiar with the technical requirements to
establish an environment which has the radio wave stability / planarity and absolute calibration in
dBuV/m with the understanding of the DAB receiver product to ensure measurement repeatability
and accuracy.
These technical requirements for the test facility are given in Appendix D.
 All equipment to be fully warmed up and operating within calibrated limits.
Exact equipment list and chamber details will need to be provided by the test facility with test
reports.
C.4 RF Test Frequencies, Pass / Fail Limits
The pass / fail limits are derived from
1. The Minimum Receiver Specification (specification 1 and 2) limits based on UK link budget as
proposed by OFCOM
2. Measurement uncertainties. The Test Facility will identify the measurement uncertainties for
radiated and conducted measurements and declare these in the results report for each
receiver test.
C.4.1 Establishment of the radiated test threshold value
In general the Radiated Pass /Fail limits are calculated from
S= 34.4 + 20log10(F/220) + X
Where:
 S= field Strength in dBuV/m.
 F= frequency in MHz
 X= Measurement uncertainty in dB.
The radiated test method uses a test threshold, Sr, for which measurement uncertainties will be
included – see sect C. 6 for the radiated test method.
The Test Facility will seek to minimise the uncertainties for setting of field strength intensity
in the test zone and for the OOI measurement process, by choice of equipment and methods
and will calculate and report the uncertainty value (U.V.) which prevails at the time of test.
Xtf is defined as the radiated uncertainty value (U.V.) for the Test Facility in dB.
89
and Sr = 34.4 + 20log10(F/220) + |Xtf| (positive magnitude of Xtf)
In any case, the maximum permitted value of |Xtf| is + 4 dB. (This figure may be revised).
C.4.2 Establishment of the conducted test threshold value
The conducted test pass / fail signal threshold, Sc, at the connector of the receiver is the
OFCOM target of -97.7dBm plus a measurement uncertainty allowance Ytf.
Ytf is defined as the conducted uncertainty value (U.V.) calculated by the Test Facility in dB.
and Sc = -97.7dBm + |Ytf| (positive magnitude of Ytf)
In any case, the maximum permitted value of |Ytf| is 0.4 dB. (This figure may be revised).
See tables in Sect C.4.3 which show the specific test facility test limits.
C.4.3 Standard RF Test Frequencies and Pass / Fail Limits:
Radiated (dBuV/m) for OOI test.
Channels
tested
a
5A
10B
10C
10D
11A
11B
11C
11D
12A
12B
12C
12D
Frequency
(MHz)
b
174.928
211.648
213.36
215.072
216.928
218.64
220.352
222.064
223.936
225.648
227.36
229.072
Receiver
Minimum
Specification
requirement
c
32.4
34.1
34.1
34.2
34.3
34.3
34.3
34.4
34.6
34.6
34.7
34.8
Pass/fail test
threshold, Sr with
Test Facility
Uncertainty
d
32.4 + Xtf
34.1+ Xtf
34.1 + Xtf
34.2 +Xtf
34.3 + Xtf
34.3 + Xtf
34.3 + Xtf
34.4 + Xtf
34.6+ Xtf
34.6+ Xtf
34.7+ Xtf
34.8+ Xtf
All channels must
pass
Conducted (dBm) for OOI test
Receiver
Minimum
Specification
requirement
f
-97.7
-97.7
-97.7
-97.7
-97.7
-97.7
-97.7
-97.7
-97.7
-97.7
-97.7
-97.7
Examples: If Xtf is calculated to be ± 4.0dB, |Xtf| = + 4.0 and Sr= 38.8 dBuV/m at ch12D
If Ytf is calculated to be ± 0.4dB, |Ytf| =+0.4 and Sc = -97.7- (0.4) = - 97.3 dBm at ch12D.
Pass/fail test
threshold, Sc with
Test Facility
Uncertainty
e
-97.7 - Ytf
-97.7 - Ytf
-97.7 - Ytf
-97.7 - Ytf
-97.7 - Ytf
-97.7 - Ytf
-97.7 - Ytf
-97.7 - Ytf
-97.7 - Ytf
-97.7 - Ytf
-97.7 - Ytf
-97.7 - Ytf
All channels must
pass
90
Please note, the DIGITAL RADIO UK reserves the right to change the pass / fail level. Verify the
threshold levels in use with the DIGITAL RADIO UK before carrying out tests.
C.5 Method for Conducted Sensitivity Go/ No Go Test
Receiver Test (conducted input) arrangement
Power Supply
OOI measurement
- Audio tester for
audio quality via
speakers or
headphones
Data for BER test
Bit Error Rate
measurer
Audio Stages
Controller
PC (if
required)
Accurate RF
power meter
DAB RF Signal
Radio
demodulator
Receiver with antenna input
connector
RF Signal
DAB Stream
Fig C1. Conducted Test set up for portable, consumer and in-vehicle receivers
91
C.5.1 Method of Conducted Signal Measurement Using Acoustic OOI
NB The OOI test performed at a go / no-go test signal level is a straightforward test to apply.
C.5.1.1 Initial conditions- Measurement Uncertainty Calculation
In order to maximise measurement accuracy and repeatability certain test conditions are stipulated
and must be adhered to. The measurement uncertainty for the measurement of onset of
impairment is ± 0.3 dB with a high confidence level.
The Uncertainty Value – U.V. (for the whole process, including field strength and OOI test) will be
established by the test facility and if <0.4dB, used to calculate the dB uV/m in column C of the table
in Sect C.8 If equal or greater than 0.4dB, then column E will be used. The U.V. will be recorded in
box Y of table C.8.
C.5.1.2. Empirical Method – 1 kHz tone, EEP-3A
1. The measurement set-up is given in Figure C1 above for the purpose of explanation of method.
2. The signal generator shall be connected to the RF input of the receiver under test. The signal
generator shall be connected to the RF input of the receiver under test.
3. The acoustic output shall be monitored through speakers or headphones connected to the
receiver.
Once the speaker output level has been set, start the impairment test. Check that the set-up is
working with these steps:
a. The RF input power level is set at a relatively high value and applied at the input
connector (-80 dBm).
b. Play the specified stream – the conditions must be exactly as in the table above.
c. Expected result - the 1 kHz tone can be heard with no impairments.
d. Set the RF signal level to say below threshold – say around -105 dBm.
e. Play the specified stream – the conditions must be exactly as in the table above.
f. Expected result - 1 kHz cannot be heard .
If the responses are as expected, continue with the measurement:
4. The RF input power level is set at a relatively high value at the input connector (-80 dBm).
5. The acoustic output is observed [observed is used rather than “heard” to allow the use of
automated monitoring] over a minimum 10 seconds and is verified to be impairment free.
6. The RF power is set to a value in C.8. column C or column E at the receiver input and
7. The frequency is set to one of those given in table C.8. column A.
a. Wait 10secs before making any assessment, applying a fixed level - AGC and other
processes may need time to settle in the signal generator and receiver.
8. Monitor the audio signal quality and determine if the signal has any impairment. Three cycles,
totalling 30 seconds, are used to establish a more accurate result.
9. Set a 10 second timer and listen for impairments. Note the number of impairments for this first
run.
a. Set a further listening period 10 second timer and note the number of impairments for
this second run.
b. Set a third listening period 10 second timer and note the number of impairments for this
third run.
c. Take the average of the number of impairments in each 10 second periods.
d. If there are no more than three impairments observable in a 10 second time period
averaged over 3 cycles (30 seconds), then the receiver has passed the test.
e. Mark the result sheet with a “Pass” for that frequency.
92
10. If there are more than three impairments in a 10 second time period averaged over 3 cycles (30
seconds), then the receiver has failed the test.
a. Repeat in another 10 second period, if required to be certain.
b. Mark the result sheet with a “Fail” for that frequency.
11. Proceed to test all the frequencies in the table in sect C.8 column A from step 7 above
Results must be submitted in a standardised way using the test report format in section C.8.
C.5.1.3. Empirical Method – Music stream, UEP-3.
Select “OOI Music” from DRAP-TEG-TESTSTREAM-001_V0.5.eti, at an r.f level of -97.7dBm on
channel 11C and verify that in a period of least 10 seconds, the sound should be substantially intact
and recognisable.
C.6 FAR / SAR and GTEM Method for Radiated Go / No Go Test.
This section describes the free field test method in a large screened room with a transmit antenna
radiator propagation or a GTEM cell with guided wave propagation.
C.6.1 FAR/SAR Test Setup
In order to obtain the required test accuracy and repeatability, this method is to be used in
Accredited Test Facilities and in-house test departments meeting the standards required for receiver
testing and free field, radiated electromagnetic wave conditions. See Appendix D for these technical
requirements.
The radiated test employs the threshold levels in dBuV/m, see the table in section C.4.3, Radiated
Columns.
Test arrangement in Fully Anechoic or Semi-Anechoic Chamber
93
0.5 metre
clear to
antenna tip
Distance 3m preferred
(far field)
Transmit
antenna,
vertical E
field
1 metre cube
uniform field
zone
Receiver “face”
Towards Tx
antenna
Semi Anechoic
chamber
EUTReceiver /
antenna
Excess
lead
Acoustic pick up
Or
Microphone +
Fibre optic relay
DAB Playout
Calibrated
Rf Signal Generator
Non conducting
table surface
Audio Signal relay box (if
required)
≤ 800 mm
PSU lead
(when req’d)
Non -metallic
audio link
(plastic pipe or
fibre optic link)
Floor absorber
Ground plane
Figure C.2 – Generalised receiver configuration in large anechoic test chamber.
N.B. It is beneficial to have a uniform field volume proportionate to the size of the EUT - 1m x1m
x1m is a minimum.
(See also appendix D)
Antenna
wire or whip
Antenna to be
vertical and to
full length
5
mm
Body of Receiver
Speaker
90 °
Side Elevation
Wire antenna to be
dressed not more
than 5mm from
surface of receiver
Non-metallic
antenna support
Figure C.3 – Antenna and radio body positioning standard (e.g. for non rigid whip antennas)
AC/DC wall
block or mains
lead routing.
94
75 dBA – normal
100dBA – high [tbd]
Speaker
Sound Pressure meter with “A”
weighting
Body of Receiver
Microphone
Side Elevation
Distance 300 mm
Figure C.4 –Measuring Speaker sound level. To set a known acoustic level and hence audio PA drive.
This may be important as the acoustic PA stage - if class D, may create RF noise and the load on the
PSU may similarly cause RF noise which can affect sensitivity.
Note, it can be important to control Mains and PSU leads as they may act both as an antenna
counterpoise, and as a radiative element for interference which can influence the overall sensitivity
result.
Antenna
Mains / DC Power
lead excess to be
coiled at receiver
level
DC and or Mains
Power leads may
exit anywhere in
this zone
Body of Receiver
Rear Elevation
Body of Receiver
Side Elevation
Mains lead or
Wall -brick dc
lead
Mains plug or
PSU Adaptor
“wall-brick”
Antenna
position not
specific
800 mm
max
Vertically
dressed
Mains plug or
PSU Adaptor
“wall-brick”
Groundplane
Groundplane
Figure C.5 – power supply lead positioning 1
800 mm
Max from base of
receiver to Mains
plug / adaptor
95
Body of Receiver
Plan View
Mains PSU
At floor level
Mains / DC Power lead excess
to be coiled at receiver level
≤ 10 cm diameter coil
Antenna
position not
specific
Body of Receiver
Rear Elevation
Mains / DC Power
lead excess to be
coiled at receiver
height
≤ 10 cm diameter
coil
800 mm
max
Vertically
dressed
800 mm
Max from base of
receiver to Mains
plug / adaptor
Mains plug or
PSU Adaptor
“wall-brick”
Figure C.6 – Excess Power Supply (and other) Lead Positioning 2 – coiled at the receiver, not at mains
end.
Figure C.5 and C.6 show how excess length in PSU and other (audio, data, USB) leads should be
arranged.
96
Any excess cable should be bundled as per CISPR 16-2-3 section 7.2.5.2. This requires the cable to be
placed in a figure of 8 of approximately 30-40cm length tied in the middle. The cable is then
connected to the exit point of the TEM cell as per the test procedure.
C.6.2 GTEM Test Setup
In order to obtain the required test accuracy and repeatability, this method is to be used in
Accredited Test Facilities and in-house test departments meeting the standards required for receiver
testing and free field, radiated electromagnetic wave conditions. See Appendix D for these technical
requirements.
A GTEM cell with sufficiently large internal dimensions may be considered for the receiver
equipment radiated test. The dimensions must allow accommodation of the equipment with a stable
zone of field distribution. The GTEM should allow deployment of the receiver, antenna and any
power supply and leads to be arranged in a configuration equivalent to that of the FAR / SAR
arrangement.
The radiated test employs the threshold levels in dBuV/m, see the table in sect.C.4.3, Radiated
Column.
Test arrangement in GTEM cell
0.5 metre
clear to
antenna tip
3.05 metre
Septum plate
Acoustic pickup or
Microphone with
Fibre optic relay
Calibrated RF Signal
Generator
≤ 800 mm
PSU lead
(when req’d)
Non metallic
audio link
(plastic pipe or
fibre optic)
Marker
To RF input of
GTEM
Non conducting
table surface
DAB Playout
DAB Playout
Figure C.7 – Generalised receiver configuration in GTEM cell.
Audio signal relay box (if
Required)
3.05 metre
Excess
lead
97
Antenna
wire or whip
Antenna to be
vertical and to
full length
5
mm
Body of Receiver
Speaker
90 °
Side Elevation
Wire antenna to be
dressed not more
than 5mm from
surface of receiver
Non-metallic
antenna support
Figure C8 – Antenna and radio body positioning standard (e.g. for non rigid whip antennas)
The device under test must be placed so that its antenna is on the centreline (long axis) of the GTEM
cell, and in the “operating plane” of the cell. The operating plane is perpendicular to the longitudinal
axis of the cell and its position is dependent on the size of the particular GTEM cell in use.
75 dBA – normal
100dBA – high [tbd]
Speaker
Sound Pressure meter with “A”
weighting
Body of Receiver
Microphone
Distance 300 mm
Side Elevation
Figure C.9 – Measuring Speaker sound level. To set a known acoustic level and hence audio PA drive.
This may be important as the acoustic PA stage- if class D, may create RF noise and the load on the
PSU may similarly cause RF noise which can affect sensitivity.
98
Antenna
Mains / DC Power
lead excess to be
coiled at receiver
level
DC and or Mains
Power leads may
exit anywhere in
this zone
Body of Receiver
Rear Elevation
Body of Receiver
Side Elevation
Mains lead or
Wall -brick dc
lead
Mains plug or
PSU Adaptor
“wall-brick”
Antenna
position not
specific
800 mm
max
Vertically
dressed
Mains plug or
PSU Adaptor
“wall-brick”
Groundplane
Groundplane
Figure C10 – GTEM Power Supply Lead Positioning
Due to the longitudinal field component generated in a GTEM cell, any cables connected to the EUT
should not be routed along this axis. The longitudinal axis is defined as the direction of the wave
propagation from the input to the cell along its length.
To avoid this, most of the cable should be dressed along the y axis (the vertical axis in line with the
electric field) or diagonally down to the mains or wall plate as much as possible with the rest along
the x axis (the horizontal axis in line with the magnetic field).
800 mm
Max from base of
receiver to Mains
plug / adaptor
99
Body of Receiver
Plan View
Mains PSU
At floor level
Mains / DC Power lead excess
to be coiled at receiver level
≤ 10 cm diameter coil
Antenna
position not
specific
Body of Receiver
Rear Elevation
Mains / DC Power
lead excess to be
coiled at receiver
height
≤ 10 cm diameter
coil
800 mm
max
Vertically
dressed
800 mm
Max from base of
receiver to Mains
plug / adaptor
Mains plug or
PSU Adaptor
“wall-brick”
Figure C.11 – Excess Power Supply (and other) Lead – coiled at the receiver, not at mains end
100
C.6.3 Go / No Go Test Method Using Acoustic OOI in FAR/SAR or GTEM
The measurement set-up is given in Figure C.2 to C.6 for FAR/SAR and Figure C.7 to C.11 for GTEM.
C.6.3.1 Initial Conditions - Measurement Uncertainty Calculation
The Uncertainty Value – U.V. (for the whole process, including field strength and OOI test) will be
established by the test facility and if < 4 dB, used to calculate the dB uV/m in column C of the table in
sect C. 7 (FAR/SAR) or C.11 (GTEM). If equal or greater than 4dB, then column E will be used. The
U.V. will be recorded in box X of the table in sect C. 7 (FAR/SAR) or C.11 (GTEM)
NB In the following text, when a GTEM cell is used note that sect C.11 shall be used instead of sect
C.7
C.6.3.2 Empirical Method – 1 KHz tone EEP-3A protection.
With the screened chamber sealed and receiver in position, set according to receiver manufacturer’s
instructions for the antenna and power cord (if used) per the Receiver Configuration Specification
(RCS):
1. To check the test arrangement the Free Field signal levels in dBuV/m given in Sect c.4.3 shall
be verified as achievable, with the receiver in place.
2. The acoustic output shall be checked as achievable through the sound link relay and
monitored through speakers or headphones.
3. The audio level from the speaker should be controlled to achieve a 75dBA SPL at 300mm
distance.
 So that the electrical activity in the receiver audio PA and power supply etc. is
controlled.
4. Set up a comfortable level of acoustic volume for the listener at the relay point outside the
room.
5. NB A known good receiver, a “reference”, may be used to establish that the end to end test
arrangement is valid.
101
Method:
Once the speaker output level has been set, start the impairment test. Check that the set-up is
working with these steps:
 The RF input power level is set at a relatively high value of 20 dB (min) above
threshold.
 Play the specified stream – the conditions must be exactly as in the table above.
 Expected result - the 1 kHz can be heard with no impairments.
 Set the RF signal level to below threshold – say around 12 dB below threshold.
 Play the specified stream – the conditions must be exactly as in the table above.
 Expected result - 1 kHz cannot be heard .
If the responses are as expected, continue with the measurement:
6. The RF input power level is set at a relatively high value.
7. The acoustic output is observed [observed is used rather than “heard” to allow the use of
automated monitoring] over a minimum 10 seconds and is verified to be impairment free.
8. The transmitted frequency will be set and the signal level will be adjusted to a threshold
value from either column D (using Test House Uncertainty Value) OR column E - in sect C.7
or C.11
 Wait 10secs before making any assessment, applying a fixed level - AGC and other
processes may need time to settle in the signal generator and receiver.
9. Monitor the audio signal quality and determine if the signal has any impairment. Three cycles,
totalling 30 seconds, are used to establish a more accurate result.
10. Set a 10 second timer and listen for impairments. Note the number of impairments for this
first run.
 Set a further listening period 10 second timer and note the number of impairments
for this second run.
 Set a third listening period 10 second timer and note the number of impairments for
this third run.
 Average the number of impairments for a single 10 second period.
 If there are no more than three impairments observable in a 10 second time period
averaged over 3 cycles (30 seconds), then the receiver has passed the test.
 Mark the result sheet with a “Pass” for that frequency.
11. If there are more than three impairments in a 10 second time period averaged over 3 cycles
(30 seconds), then the receiver has failed the test.
 Repeat in another 10 second period, if required to be certain.
Mark the result sheet with a “Fail” for that frequency.
12. Mark a result sheet “Pass” or “Fail” or accordingly for each frequency tested in the table
from sect C.7 or C.11 column D using test facility U.V or column F if the maximum U.V. of 4
dB is used.
13. Change to the new frequency and power level.
 This is the test “loop” end.
14. Proceed to test all the frequencies in the table from sect C.7 or C.11 from step 8 above,
filling in the results sheet.
C.6.3.3. Empirical Method – Music stream, UEP-3.
102
Select “OOI Music” from DRAP-TEG-TESTSTREAM-001_V0.5.eti, at an r.f level of -97.7dBm on
channel 11C and verify that in a period of least 10 seconds, the sound should be substantially intact
and recognisable.
103
C.7 Radiated Test Result Template – FAR / SAR
Receiver Make Model and type and serial number
…………………………………………………………………………..
Date and time of test
…………………………………………….
Mains voltage / Frequency
…………………………………………….
Test personnel names:
…………………………………………….
List attached files / diagrams / Photos / video clips:
…………………………………………….
B
C
A
Channel
Frequency
(MHz)
PASS / FAIL
Target Threshold
(dBuV/m) for OOI test
using U.V in Box X.
D
Box X. Measurement uncertainty
value, (U.V.) Xtf in dB for 95%
confidence:
…………………………………………….
Other Calibration data / test
equipment
…………………………………………….
E
F
OOI test
Impairment
recorded?
Yes or no
PASS / FAIL
Threshold maximum allowed
limit
(dBuV/m) for OOI
test
NB use Column C and D OR Column E and F
OOI test
Impairment
recorded?
Yes or no
5A
174.928
32.4+ Xtf=
36.4
1
10B
211.648
34.1+ Xtf=
38.1
2
10C
213.36
34.1+ Xtf=
38.1
3
10D
215.072
34.2+ Xtf=
38.2
4
11A
216.928
34.3+ Xtf=
38.3
5
11B
218.64
34.3+ Xtf=
38.3
6
11C
220.352
34.4+ Xtf=
38.4
7
11D
222.064
34.5+ Xtf=
38.5
8
12A
223.936
34.6+ Xtf=
38.6
9
12B
225.648
34.6+ Xtf=
38.6
10
12C
227.36
34.7+ Xtf=
38.7
11
12D
229.072
34.8+ Xtf=
38.8
12
104
C.8 Conducted Test Result Template
Receiver Make Model and type and serial number
…………………………………………………………………………..
Date and time of test
…………………………………………….
Mains voltage / Frequency
…………………………………………….
Test personnel names:
…………………………………………….
List attached files / diagrams / Photos / video clips:
…………………………………………….
A
Channel
B
C
D
Frequency
(MHz)
PASS / FAIL
Target Threshold
(dBm) for OOI test
using U.V in Box Y.
Box Y. Measurement uncertainty
value, (U.V.) Ytf in dB for 95%
confidence:
…………………………………………….
Other Calibration data / test
equipment
…………………………………………….
E
F
PASS / FAIL
Threshold maximum allowed
limit
(dBm) for OOI test
NB use Column C and D OR Column E and F
OOI test
Impairment
recorded?
Yes or no
OOI test
Impairment
recorded?
Yes or no
5A
174.928
-97.7+Ytf=
-97.3
1
10B
211.648
-97.7+Ytf=
-97.3
2
10C
213.36
-97.7+Ytf=
-97.3
3
10D
215.072
-97.7+Ytf=
-97.3
4
11A
216.928
-97.7+Ytf=
-97.3
5
11B
218.64
-97.7+Ytf=
-97.3
6
11C
220.352
-97.7+Ytf=
-97.3
7
11D
222.064
-97.7+Ytf=
-97.3
8
12A
223.936
-97.7+Ytf=
-97.3
9
12B
225.648
-97.7+Ytf=
-97.3
10
12C
227.36
-97.7+Ytf=
-97.3
11
12D
229.072
-97.7+Ytf=
-97.3
12
105
C.9 Measurement Uncertainty Calculation (for info)
Item
1 Uncertainty in baseband signal and RF level from Signal gen
Assume a Power meter is used to set level
Use matching pad.
dB
0.25
dB squared
0.0625
0
0
2
Uncertainty loss (variability) in conducted RF match.
3
Variation in sens due to the variability in noise / self interference of the receiver
0.2
0.04
4
Variability in the Acoustic OOI measurement
0.25
0.0625
Sum of squares
Root sum squares ± dB
0.165
0.4
C.10 FAR / SAR Radiated Measurement Uncertainty Calculation (for info)
Item
1 Uncertainty in free field signal strength at Receiver Test zone
2
items include
Uncertainty in signal level from Signal generator
RF Cable loss variability
SG - Antenna Mismatch variability
Antenna calibration variability
Spurious signal coupling variability
Polarization variability
Uncertainty (variability) in conducted sensitivity of Receiver
(due to changes of environment / PSU etc lead coupling effects)
dB
2.98
dB squared
8.8804
0.2
0.04
3
Variability in the gain of the receiver antenna "system" due to
placement differences
2
4
4
Variability in the noise / self interference of the antenna system
due to placement differences
2
4
5
Variability in the Acoustic OOI measurement
0.25
0.0625
Sum of squares
Root sum squares ± dB
The value taken is rounded down to 4.0 dB.
16.9829
4.1
106
C.11 GTEM Radiated Test Result Template (same thresholds as for SAR / FAR)
Receiver Make Model and type and serial number
…………………………………………………………………………..
Date and time of test
…………………………………………….
Mains voltage / Frequency
…………………………………………….
Test personnel names:
…………………………………………….
List attached files / diagrams / Photos / video clips:
Box X. Measurement uncertainty
value (U.V.) in dB for 95%
confidence:
…………………………………………….
Other Calibration data / test
equipment
…………………………………………….
A
B
Channel
Frequency
(MHz)
C
D
…………………………………………….
E
F
PASS / FAIL
OOI test
PASS / FAIL
Target Threshold
Impairment
Threshold - maximum
(dBuV/m) for OOI test
recorded?
allowed limit
using U.V in Box X.
Yes or no
(dBuV/m) for OOI test
NB use Column C and D OR Column E and F
OOI test
Impairment
recorded?
Yes or no
5A
174.928
32.4+Xtf=
36.4
1
10B
211.648
34.1+Xtf=
38.1
2
10C
213.36
34.1+Xtf=
38.1
3
10D
215.072
34.2+ Xtf=
38.2
4
11A
216.928
34.3+ Xtf=
38.3
5
11B
218.64
34.3+ Xtf=
38.3
6
11C
220.352
34.4+ Xtf=
38.4
7
11D
222.064
34.5+ Xtf=
38.5
8
12A
223.936
34.6+ Xtf=
38.6
9
12B
225.648
34.6+ Xtf=
38.6
10
12C
227.36
34.7+ Xtf=
38.7
11
12D
229.072
34.8+ Xtf=
38.8
12
107
C.12 GTEM Radiated Measurement Uncertainty Calculation (for info)
Item
1 Uncertainty in free field signal strength at Receiver Test zone
2
items include
Uncertainty in signal level from Signal generator
RF Cable loss variability
SG - Antenna Mismatch variability
Antenna calibration variability
Spurious signal coupling variability
Polarization variability
Uncertainty (variability) in conducted sensitivity of Receiver
(due to changes of environment / PSU etc lead coupling effects)
dB
2.98
dB squared
8.8804
0.2
0.04
3
Variability in the gain of the receiver antenna "system" due to
placement differences
2
4
4
Variability in the noise / self interference of the antenna system
due to placement differences
2
4
5
Variability in the Acoustic OOI measurement
0.25
0.0625
Sum of squares
Root sum squares ± dB
The value taken is rounded down to 4.0 dB.
16.9829
4.1
108
Appendix D – Technical requirement for the radio test facility
D.1 Introduction
This Appendix gives the standards for accreditation of the radio frequency test facility to meet the
measurement and test requirements.
The capability of the test facility will determine the accuracy and repeatability of the radio
performance measurements. It is thus critically linked to the confidence in the test pass / fail levels
quoted in previous sections
D.2 Standard
The test house will be shown to meet standards for:
Item
Quality management systems, record keeping and calibration
Laboratory RF Measurement capability – general.
Use of transfer standards.
DAB receiver test familiarity
Absolute calibration accuracy and repeatability of Free Field signals:
Test zone arrangements normalised site attenuation (NSA)
Positioning of antennas and Device under test.
RF cabling practice.
Electromagnetic wave polarization stability and level flatness absolute level
calibration accuracy..
Solving RF problems.
Standard
BS EN 9001
ISO17025
ANSI C.63.4 – 2003 pp 18 - 30 CISPR
equivalent
CISPR16-1-4
CISPR 22
Uncertainty measurement calculations.
NAMAS NIS 81, May 1994
UKAS Document LAB 34
In absolute measurement terms, the uncertainty of the field level will be in the order of ±4dB or
more when using these generic standards above (CISPR16 -1-4).
This alone is unlikely to be sufficiently accurate for the sensitivity measurements.
Therefore additional DRAP standards below will be applied to reduce measurement uncertainties, to
the assumed ±4dB. This table defines the equipment and configurations necessary.
Semi Anechoic or Fully Anechoic screened chamber.
 Screened room to exclude sources of airborne interference;
 Mains outlet under the mounting table in floor of chamber.
Non metallic mounting table for EUT 0.8 m to 1.5 m height.
RF signal generator for VHF.
 Level to be controlled in 0.1 dB steps.
Baseband DAB stream generator, capable to supply the conditions in 6.2.2.
 Acoustic stream source for 1kHz tone.
109
A sound level meter to check weighted acoustic tone level
Non metallic acoustic link to get the acoustic output from speaker to outside the chamber. E.g.
a. Plastic acoustic pipe or
b. Miniature microphone and fibre optic link.
Test zone 1 x 1 x 1 metre cube with uniform vertically polarized RF field over the mounting table.
Distance of screened wall / ceiling to any part of the product antenna 50 cm minimum (to avoid
detuning antenna).
The method given in ANSI C63.4, especially sect 5.4 pages 18 – 30 will be employed.
Additionally, a calibrated transfer standard dipole rather than directional antenna will be used to
establish the NSA of the range at each frequency of interest. (This provides a signal collection more
representative of the EUT).
Additionally a floor absorber of at least 3 metre x 3 metre must be placed immediately in front of the
EUT test zone to prevent reflections from the floor to the EUT.
Additionally the test zone around the EUT position will be checked for signal variability – the
substitution dipole should be moved ± 35cm back and forth, up and down to verify that the signal
level is uniform and no sharp nulls are present.
To meet these criteria
Antenna test position
Expected result if e-m wave is propagated correctly
35cm backwards (away from
Signal changes according to path loss change of +35cm – i.e.
tx antenna) and forwards
fraction of dB.
35cm side to side
Substantially same signal level.
35cm up and down
Substantially same signal level.
If the test zone does not meet these criteria, then adjustments must be made until the conditions are
fulfilled.
Note:
It would be beneficial to reduce the uncertainty with a target of ± 2dB.
Increased free field accuracy and stability may be achieved using a Comparison Noise Emitter, such
as York Technologies CNEIII.
This has the functionality of a “golden standard” and may be used as a transfer standard against
which the site attenuation and signal flatness may be quantitatively assessed.
It is a physical object similar in size to a DAB receiver, to instrumentation standards, which could be
used as a transfer standard for free field work.
This product is relatively inexpensive and if held by DRAP or the DIGITAL RADIO UK and calibrated in
one or more master chamber(s), can thereafter be used as a transfer standard for unknown chamber
calibrations and be used from time to time to verify test facility performance.
110
Appendix E
CR1. The Grid Network, 26th March 2013
Remove Modes 2 and 4 from the DAB stream MSC.
CR2. BBC Radio, 25th July 2013
Further editorial clarification is required around DLS requirements in the domestic specifications.
DLS is required for domestic receivers.
If you would like higher resolution copies of these change requests please email
tickmark@digitalradiouk.com.
CR3. The Society for Manufacturers, Motorists and Traders, 8th August 2013
Further editorial clarification is required around DLS requirements for In-vehicle. DLS is not required
for in-vehicle receivers.
111
CR4. Pure Radio, 4th July 2013
Removal of references to the ensemble label as a requirement of the Minimum Specification
If you would like higher resolution copies of these change requests please email
tickmark@digitalradiouk.com.
CR5. Frontier Silicon, 16th September 2013
Upgrade the Onset of Impairment (OOI) Specification in both the “Minimum Specifications”
documents– Domestic and In-Vehicle.
Improve the method for the Onset of Impairment (OOI) test in the “Per Product Test Specification”
document.
Change the ETI test stream formulation for sensitivity testing to suit the above.
Please see the accompanying items :
Revised wording (proposal) for section 8.1 of the Domestic Receiver Minimum Specification. Annex 1
Revised wording (proposal) for section 8.1 of the In-Vehicle Receiver Minimum Specification. Annex
1
Revised wording (proposal) for sections C.5.1 on, of the Per Product Conformance Test Specification.
Annex 2
Addition of UEP audio test.
112
CR6. Digital Radio UK, 3rd June 2014
Remove the following text in the per product:
A.10 Test 4 – “DRAP-Tick-Fcn-Test-4 Scan and add another ensemble”
 Objective
o To ensure that the receiver can discover another ensemble and add the new services
found to the current service list
 Method
o Turn on the receiver
o On the receiver initiate a scan
o After the scan navigate to the services and confirm that the service list on the
receiver contains services: Service A, Service B and Service C and also Service D,
Service E, Service F and Service G
o Turn the receiver off
 Expected results
o The receiver’s service list must contain services: Service A, Service B, Service C,
Service D, Service E, Service F and Service G
And replace it with the following text:
A.10 Test 4 – “DRAP-Tick-Fcn-Test-4 Scan and add another ensemble”
113



Objective
o To ensure that the receiver can discover another ensemble and show these new
services within the service list
Method
o Turn on the receiver
o On the receiver initiate a scan
o After the scan navigate to the services and confirm that the service list on the
receiver contains services: Service D, Service E, Service F
o Turn the receiver off
Expected results
o The receiver’s service list must contain services: Service D, Service E, Service F
And…….
Remove the following text from the per product test:
The re-scan / re-tune feature must be able to cope with the following changes:
1. Service moves to a different multiplex
2. New multiplex launches
3. Multiplex changes its frequency
4. New Service appears
5. Service changes name
6. Service disappears
7. Multiple Instances of the same programme content with the same Service ID on different
frequencies and with varying signal levels
And replace it with the following text:
The re-scan / re-tune feature must be able to cope with the following changes:
1. Service moves to a different multiplex
2. New multiplex appears
3. Multiplex changes its frequency
4. New Service appears
5. Service changes name
6. Service disappears
7. Multiple Instances of the same programme content with the same Service ID on different
frequencies and with varying signal levels
114
115
CR7. Pure, 5th June 2014 – NOT ACCEPTED

Change the ETI stream used for display character testing to split the long sequence of characters
into groups with spaces between them.
CR8. Pioneer, 12th September 2014 – ACCEPTED
This change request submission is based on the request of Mr. Sam, DRUK. Pioneer have already
discussed with him as technical question (T12) from Pioneer.
1.Pioneer would like to make a request to change “No interruption to service.” to “Only minor break
(1<second) of breakup” in the Valid result of Test ID 3.8.4.
FS/BBC would also like to add the change to EEP-3A from UEP-3 for this test.
2. Same as above but it is Test ID 3.9.4.
3.3.2.4, 3.2.8 and 3.8.2 are all tests that relate to falling back to primary.
Although there are no normative requirements that state that a receiver should fall back to primary
the industry accepted behaviour is that if after a reconfiguration an audio secondary is removed
then the results will be that the radio selects the audio primary if it is available
For 3.2.4 and 3.2.8 change
“The receiver falls back to the primary component of the service that the secondary component was
associated with or mute the receiver”
To read
“If the related Primary component of the same service is an audio component then the receiver falls
back to this component: if the primary component is a data component then mute the receiver”
116
For 3.8.2 change
“The receiver falls back to the primary component of the service that the secondary component was
associated with or mutes the receiver”
To read
“The receiver falls back to the primary component of the service that the secondary component was
associated with”
4.4.3 refers to a line break but another typo puts this as a word break in the expected results. Simply
change the word “word” to “line”
Describe the reason for the change:
1. Pioneer believes that this is typo. Technically the test condition of ID 3.8.4 is the same as ID 3.5.5
and 3.5.6 focused on bitrate changing of DAB+. Because of that, the valid result should be changed
to "Only minor break (1<second) of breakup" which is the same as ID 3.5.5 and 3.5.6. Also standard
car radios in the market are NOT able to output continuous sound when bitrate changes in DAB+
mode.
FS/BBC - the EEP-3A changes from UEP-3 was to correct a cut-n-paste typo
2. Pioneer believes that this is also typo. Technically the test condition of ID 3.9.4 is the same as ID
3.9.1 focused on audio parameter changing (in other words audio sampling rate changing). It
doesn’t matter whether DAB or DAB+. Because of that, the valid result should be changed to "Only
minor break (1<second) of breakup" which is the same as ID 3.9.1. Also standard car radios in the
market are NOT able to output continuous sound when audio sampling rate changes.
3. To bring the tests into line with industry accepted behaviour and remove an element of ambiguity
with the 3 test outcomes identified.
4. Amend a typo “word” should read “line”
If you would like higher resolution copies of these change requests please email
tickmark@digitalradiouk.com.
117
CR9. Frontier (4th July 2014) – ACCEPTED
Change the per product ETIs and associated test documentation to




Allow, via Service labels, character support testing on automotive products that do not
implement DLS.
Add DLS formatting codes to the DLS test.
Allow service list testing using short service labels.
Add reference to Arqiva’s requested changes (to follow) to make the per product eti files more
representative of a real multiplex.