EMC Test Report
FCC Part 15 Subpart C (15.247)
(Modified for India’s Allocation of 5825 - 5875 MHz
Model: NanoBridgeM5
APPLICANT:
TEST SITE(S):
IC SITE REGISTRATION #:
REPORT DATE:
FINAL TEST DATES:
Ubiquiti Networks
91 E. Tasman Drive
San Jose, CA 95134
Elliott Laboratories
41039 Boyce Road.
Fremont, CA. 94538-2435
2845B-4, 2845B-7
March 23, 2011
March 13 and 15, 2011
AUTHORIZED SIGNATORY:
______________________________
Mark Briggs
Staff Engineer
Elliott Laboratories
Elliott Laboratories is accredited by the A2LA, certificate number 2016-01, to perform the test(s) listed in this report, except where noted
otherwise. This report shall not be reproduced, except in its entirety, without the written approval of Elliott Laboratories
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REVISION HISTORY
Rev#
Date
-
03-23-2011
File: R82538
Comments
Modified
By
First release
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TABLE OF CONTENTS
REVISION HISTORY..............................................................................................................................................2
TABLE OF CONTENTS ..........................................................................................................................................3
SCOPE........................................................................................................................................................................4
OBJECTIVE ..............................................................................................................................................................4
STATEMENT OF COMPLIANCE.........................................................................................................................4
DEVIATIONS FROM THE STANDARDS............................................................................................................5
TEST RESULTS SUMMARY .................................................................................................................................5
DIGITAL TRANSMISSION SYSTEMS (5725 –5850 MHZ)...............................................................................5
GENERAL REQUIREMENTS APPLICABLE TO ALL BANDS........................................................................6
MEASUREMENT UNCERTAINTIES.................................................................................................................. 6
EQUIPMENT UNDER TEST (EUT) DETAILS....................................................................................................7
GENERAL..............................................................................................................................................................7
ANTENNA SYSTEM ............................................................................................................................................7
MODIFICATIONS.................................................................................................................................................7
SUPPORT EQUIPMENT.......................................................................................................................................7
EUT INTERFACE PORTS ....................................................................................................................................7
EUT OPERATION .................................................................................................................................................7
TEST SITE.................................................................................................................................................................8
GENERAL INFORMATION.................................................................................................................................8
CONDUCTED EMISSIONS CONSIDERATIONS ..............................................................................................8
RADIATED EMISSIONS CONSIDERATIONS ..................................................................................................8
MEASUREMENT INSTRUMENTATION ............................................................................................................9
RECEIVER SYSTEM ............................................................................................................................................9
INSTRUMENT CONTROL COMPUTER ............................................................................................................9
LINE IMPEDANCE STABILIZATION NETWORK (LISN)...............................................................................9
FILTERS/ATTENUATORS ................................................................................................................................10
ANTENNAS.........................................................................................................................................................10
ANTENNA MAST AND EQUIPMENT TURNTABLE .....................................................................................10
INSTRUMENT CALIBRATION.........................................................................................................................10
TEST PROCEDURES ............................................................................................................................................11
EUT AND CABLE PLACEMENT ......................................................................................................................11
CONDUCTED EMISSIONS................................................................................................................................11
RADIATED EMISSIONS....................................................................................................................................11
RADIATED EMISSIONS....................................................................................................................................12
CONDUCTED EMISSIONS FROM ANTENNA PORT ....................................................................................15
BANDWIDTH MEASUREMENTS ....................................................................................................................15
SPECIFICATION LIMITS AND SAMPLE CALCULATIONS .........................................................................16
GENERAL TRANSMITTER RADIATED EMISSIONS SPECIFICATION LIMITS .......................................16
OUTPUT POWER LIMITS – DIGITAL TRANSMISSION SYSTEMS ............................................................17
TRANSMIT MODE SPURIOUS RADIATED EMISSIONS LIMITS – FHSS AND DTS SYSTEMS...............17
SAMPLE CALCULATIONS - RADIATED EMISSIONS..................................................................................17
APPENDIX A TEST EQUIPMENT CALIBRATION DATA ............................................................................19
APPENDIX B TEST DATA AND TEST CONFIGURATION PHOTOGRAPHS...........................................20
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SCOPE
An electromagnetic emissions test has been performed on the Ubiquiti Networks model
NanoBridgeM5, pursuant to FCC Part 15 Subpart C (modified to account for the Indian
allocation of 5825 - 5875 MHz).
Conducted and radiated emissions data has been collected, reduced, and analyzed within
this report in accordance with measurement guidelines set forth in the following
reference standards and as outlined in Elliott Laboratories test procedures:
ANSI C63.4:2003
FCC DTS Measurement Procedure KDB558074, March 2005
The intentional radiator above has been tested in a simulated typical installation to
demonstrate compliance with the relevant Industry Canada performance and procedural
standards.
Final system data was gathered in a mode that tended to maximize emissions by varying
orientation of EUT, orientation of power and I/O cabling, antenna search height, and
antenna polarization.
Every practical effort was made to perform an impartial test using appropriate test
equipment of known calibration. All pertinent factors have been applied to reach the
determination of compliance.
OBJECTIVE
The primary objective of the manufacturer is compliance with the regulations outlined in
the previous section, modified to account for the Indian allocation of 5825 - 5875 MHz.
Maintenance of compliance is the responsibility of the manufacturer. Any modification
of the product which may result in increased emissions should be checked to ensure
compliance has been maintained (i.e., printed circuit board layout changes, different line
filter, different power supply, harnessing or I/O cable changes, etc.).
STATEMENT OF COMPLIANCE
The tested sample of Ubiquiti Networks model NanoBridgeM5 complied with the
requirements of FCC Part 15 Subpart C with respect to measurements at the rf port of
the device under test and with the allocated frequency band modified to match the Indian
allocation of 5825 - 5875 MHz.
Maintenance of compliance is the responsibility of the manufacturer. Any modifications
to the product should be assessed to determine their potential impact on the compliance
status of the device with respect to the standards detailed in this test report.
The test results recorded herein are based on a single type test of Ubiquiti Networks
model NanoBridgeM5 and therefore apply only to the tested sample. The sample was
selected and prepared by Jennifer Sanchez of Ubiquiti Networks.
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DEVIATIONS FROM THE STANDARDS
No deviations were made from the published requirements listed in the scope of this
report other than the allocated frequency band was modified to match the allocation in
India.
TEST RESULTS SUMMARY
DIGITAL TRANSMISSION SYSTEMS (5725 –5850 MHz)
Description
Measured Value /
Comments
Limit / Requirement
Result
15.247(a)
RSS 210
A8.2
Digital Modulation
Systems uses OFDM /
techniques
System must utilize
a digital
transmission
technology
Complies
15.247 (a)
(2)
RSS 210
A8.2 (1)
6dB Bandwidth
> 16.6 MHz
>500kHz
Complies
15.247 (b)
RSS 210
A8.2 (4)
Output Power
(antenna port)
RSS 210
A8.2 (4)
Output Power
(eirp) Note 1
HT40
7.3dBm (0.005W)
HT20
7.8dBm (0.006 W)
HT40
35.8 dBm (3.4W)
HT20
35.3 dBm (3.8 W)
1Watt (30dBm)
EIRP limited to 4
Watts.
FCC
Rule Part
RSS
Rule Part
15.247 (b)
Complies
Complies
Maximum permitted
Power Spectral
Complies
-13.3 dBm / 3kHz
is 8dBm/3kHz
Density
Antenna Port
All spurious emissions
RSS 210
< -30dBc Note 2
Spurious Emissions –
15.247(c)
Complies
< -20dBc
A8.5
30MHz – 40 GHz
Radiated Spurious
15.207 in restricted
RSS 210
Emissions
51.8dBµV/m @
15.247(c) /
bands, all others
Complies
A8.5
30MHz – 40 GHz
1560.1MHz (-2.2dB)
15.209
Table 2, 3
<-30dBc Note 2
Note 3
Note 1: EIRP calculated is based on an antenna gain of 25dBi on each of the two transmit chains. As the data
transmitted on the two chains may be coherent, and in accordance with FCC recommendations, the effective
antenna gain for the system is 28dBi.
Note 2: Limit of -30dBc used because the power was measured using the UNII test procedure (maximum power
averaged over a transmission burst).
Note 3: Radiated emissions below 1GHz are covered by digital device measurements (CISPR 22 and/or FCC 15
Subpart B). No emissions from the radio circuitry were observed below 1GHz.
Note 4: The FCC’s frequency allocation under 15.247 is 5725 to 5850 MHz. Testing in this report covers the
Indian allocation of 5825 – 5875 MHz.
15.247(d)
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RSS 210
A8.2 (2)
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GENERAL REQUIREMENTS APPLICABLE TO ALL BANDS
FCC Rule
Part
RSS
Rule part
Description
15.203
-
RF Connector
15.207
RSS GEN
Table 2
AC Conducted
Emissions
15.109
RSS GEN
7.2.3
Table 1
Receiver spurious
emissions
RSS 102
RF Exposure
Requirements
15.247 (b)
(5)
15.407 (f)
Measured Value /
Result
Limit / Requirement
Comments
(margin)
Antenna is integrated
Unique or integral
Complies
into the device
antenna required
Not evaluated in the scope of this report. Device is
powered via Power over Ethernet and not from an AC
source.
Not applicable, device operates above 960MHz.
0.762mW/cm2 at
20cm separation
Refer to MPE
calculations in
Appendix B.
1mW/cm2
Refer to OET 65,
FCC Part 1 and RSS
102
Complies
MEASUREMENT UNCERTAINTIES
ISO/IEC 17025 requires that an estimate of the measurement uncertainties associated
with the emissions test results be included in the report. The measurement uncertainties
given below are based on a 95% confidence level and were calculated in accordance
with UKAS document LAB 34.
Measurement Type
RF power, conducted
(power meter)
RF power, conducted
(Spectrum analyzer)
Conducted emission of
transmitter
Conducted emission of
receiver
Radiated emission
(substitution method)
Radiated emission (field
strength)
Conducted Emissions (AC
Power)
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Measurement
Unit
Frequency Range
Expanded
Uncertainty
dBm
25 to 7000 MHz
± 0.52 dB
dBm
25 to 7000 MHz
± 0.7 dB
dBm
25 to 26500 MHz
± 0.7 dB
dBm
25 to 26500 MHz
± 0.7 dB
dBm
25 to 26500 MHz
± 2.5 dB
dBμV/m
25 to 1000 MHz
1000 to 40000 MHz
± 3.6 dB
± 6.0 dB
dBμV
0.15 to 30 MHz
± 2.4 dB
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EQUIPMENT UNDER TEST (EUT) DETAILS
GENERAL
The Ubiquiti Networks model NanoBridgeM5 is an 802.11n 5GHz radio supporting 2x2
MIMO. Since the EUT would be pole- or wall- mounted the EUT was mounted to a
non-conductive tripod during testing. The EUT is powered by a 15V/0.8A POE power
supply.
The sample was received on March 4, 2011 and tested on March 13 and 15, 2011. The
EUT consisted of the following component(s):
Company
Ubiquiti
Networks
Model
NMB5
Description
802.11n 5GHz
radio
Serial Number
-
FCC ID
SWX-M5D
ANTENNA SYSTEM
The EUT antenna is a 25dBi dish antenna which is integrated into the device.
MODIFICATIONS
No modifications were made to the EUT during the time the product was at Elliott.
SUPPORT EQUIPMENT
The following equipment was used as support equipment for testing:
Company
Ubiquiti
Networks
Dell
Model
UBI-POE-15-8
Description
POE
Serial Number
-
FCC ID
-
-
Laptop
-
-
EUT INTERFACE PORTS
The I/O cabling configuration during testing was as follows:
Port
Ethernet
Ethernet
Connected
To
EUT
POE
POE
Description
CAT 5
CAT 5
Power Cable
Cable(s)
Shielded or Unshielded
Shielded
Shielded
Shielded
Length(m)
2
2
0.5
EUT OPERATION
During testing the EUT operated using Atheros radio test software (ART). The software
allowed the device to operate in a continuous transit or receive mode on any of the
operating channels in HT20 or HT40 modes. The low, center and high channels in the
band for HT20 mode were evaluated. HT40 operation only supports a single channel for
use the 5GHz band allocated in India and that channel was also tested.
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TEST SITE
GENERAL INFORMATION
Final test measurements were taken at the test sites listed below. Pursuant to section
2.948 of the FCC’s Rules and section 3.3 of RSP-100, construction, calibration, and
equipment data has been filed with the Commission and with industry Canada.
Site
Chamber 4
Chamber 7
Registration Numbers
FCC
Canada
211948
2845B-4
A2LA
2845B-7
accreditation
Location
41039 Boyce Road
Fremont,
CA 94538-2435
ANSI C63.4:2003 recommends that ambient noise at the test site be at least 6 dB below
the allowable limits. Ambient levels are below this requirement. The test site(s) contain
separate areas for radiated and conducted emissions testing. Considerable engineering
effort has been expended to ensure that the facilities conform to all pertinent
requirements of ANSI C63.4:2003.
CONDUCTED EMISSIONS CONSIDERATIONS
Conducted emissions testing is performed in conformance with ANSI C63.4:2003.
Measurements are made with the EUT connected to the public power network through a
nominal, standardized RF impedance, which is provided by a line impedance
stabilization network, known as a LISN. A LISN is inserted in series with each currentcarrying conductor in the EUT power cord.
RADIATED EMISSIONS CONSIDERATIONS
The FCC has determined that radiation measurements made in a shielded enclosure are
not suitable for determining levels of radiated emissions. Radiated measurements are
performed in an open field environment or in a semi-anechoic chamber. The test sites
are maintained free of conductive objects within the CISPR defined elliptical area
incorporated in ANSI C63.4:2003 guidelines and meet the Normalized Site Attenuation
(NSA) requirements of ANSI C63.4:2003.
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MEASUREMENT INSTRUMENTATION
RECEIVER SYSTEM
An EMI receiver as specified in CISPR 16-1-1 is used for emissions measurements. The
receivers used can measure over the frequency range of 9 kHz up to 2000 MHz. These
receivers allow both ease of measurement and high accuracy to be achieved. The
receivers have Peak, Average, and CISPR (Quasi-peak) detectors built into their design
so no external adapters are necessary. The receiver automatically sets the required
bandwidth for the CISPR detector used during measurements. If the repetition
frequency of the signal being measured is below 20Hz, peak measurements are made in
lieu of Quasi-Peak measurements.
For measurements above the frequency range of the receivers, a spectrum analyzer is
utilized because it provides visibility of the entire spectrum along with the precision and
versatility required to support engineering analysis. Average measurements above
1000MHz are performed on the spectrum analyzer using the linear-average method with
a resolution bandwidth of 1 MHz and a video bandwidth of 10 Hz, unless the signal is
pulsed in which case the average (or video) bandwidth of the measuring instrument is
reduced to onset of pulse desensitization and then increased.
INSTRUMENT CONTROL COMPUTER
The receivers utilize either a Rohde & Schwarz EZM Spectrum Monitor/Controller or
contain an internal Spectrum Monitor/Controller to view and convert the receiver
measurements to the field strength at an antenna or voltage developed at the LISN
measurement port, which is then compared directly with the appropriate specification
limit. This provides faster, more accurate readings by performing the conversions
described under Sample Calculations within the Test Procedures section of this report.
Results are printed in a graphic and/or tabular format, as appropriate. A personal
computer is used to record all measurements made with the receivers.
The Spectrum Monitor provides a visual display of the signal being measured. In
addition, the controller or a personal computer run automated data collection programs
which control the receivers. This provides added accuracy since all site correction
factors, such as cable loss and antenna factors are added automatically.
LINE IMPEDANCE STABILIZATION NETWORK (LISN)
Line conducted measurements utilize a fifty microhenry Line Impedance Stabilization
Network as the monitoring point. The LISN used also contains a 250 uH CISPR adapter.
This network provides for calibrated radio frequency noise measurements by the design
of the internal low pass and high pass filters on the EUT and measurement ports,
respectively.
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FILTERS/ATTENUATORS
External filters and precision attenuators are often connected between the receiving
antenna or LISN and the receiver. This eliminates saturation effects and non-linear
operation due to high amplitude transient events.
ANTENNAS
A loop antenna is used below 30 MHz. For the measurement range 30 MHz to 1000
MHz either a combination of a biconical antenna and a log periodic or a bi-log antenna
is used. Above 1000 MHz, horn antennas are used. The antenna calibration factors to
convert the received voltage to an electric field strength are included with appropriate
cable loss and amplifier gain factors to determine an overall site factor, which is then
programmed into the test receivers or incorporated into the test software.
ANTENNA MAST AND EQUIPMENT TURNTABLE
The antennas used to measure the radiated electric field strength are mounted on a nonconductive antenna mast equipped with a motor-drive to vary the antenna height.
Measurements below 30 MHz are made with the loop antenna at a fixed height of 1m
above the ground plane.
ANSI C63.4:2003 specifies that the test height above ground for table mounted devices
shall be 80 centimeters. Floor mounted equipment shall be placed on the ground plane if
the device is normally used on a conductive floor or separated from the ground plane by
insulating material from 3 to 12 mm if the device is normally used on a non-conductive
floor. During radiated measurements, the EUT is positioned on a motorized turntable in
conformance with this requirement.
INSTRUMENT CALIBRATION
All test equipment is regularly checked to ensure that performance is maintained in
accordance with the manufacturer's specifications. All antennas are calibrated at regular
intervals with respect to tuned half-wave dipoles. An exhibit of this report contains the
list of test equipment used and calibration information.
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TEST PROCEDURES
EUT AND CABLE PLACEMENT
The regulations require that interconnecting cables be connected to the available ports of
the unit and that the placement of the unit and the attached cables simulate the worst
case orientation that can be expected from a typical installation, so far as practicable. To
this end, the position of the unit and associated cabling is varied within the guidelines of
ANSI C63.4:2003, and the worst-case orientation is used for final measurements.
CONDUCTED EMISSIONS
Conducted emissions are measured at the plug end of the power cord supplied with the
EUT. Excess power cord length is wrapped in a bundle between 30 and 40 centimeters
in length near the center of the cord. Preliminary measurements are made to determine
the highest amplitude emission relative to the specification limit for all the modes of
operation. Placement of system components and varying of cable positions are
performed in each mode. A final peak mode scan is then performed in the position and
mode for which the highest emission was noted on all current carrying conductors of the
power cord.
LISN
EUT
LISN
AE
0.4m
0.8m
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RADIATED EMISSIONS
A preliminary scan of the radiated emissions is performed in which all significant EUT
frequencies are identified with the system in a nominal configuration. At least two scans
are performed, one scan for each antenna polarization (horizontal and vertical; loop
parallel and perpendicular to the EUT). During the preliminary scans, the EUT is rotated
through 360˚, the antenna height is varied (for measurements above 30 MHz) and cable
positions are varied to determine the highest emission relative to the limit. Preliminary
scans may be performed in a fully anechoic chamber for the purposes of identifying the
frequencies of the highest emissions from the EUT.
A speaker is provided in the receiver to aid in discriminating between EUT and ambient
emissions. Other methods used during the preliminary scan for EUT emissions involve
scanning with near field magnetic loops, monitoring I/O cables with RF current clamps,
and cycling power to the EUT.
Final maximization is a phase in which the highest amplitude emissions identified in the
spectral search are viewed while the EUT azimuth angle is varied from 0 to 360 degrees
relative to the receiving antenna. The azimuth, which results in the highest emission is
then maintained while varying the antenna height from one to four meters (for
measurements above 30 MHz, measurements below 30 MHz are made with the loop
antenna at a fixed height of 1m). The result is the identification of the highest amplitude
for each of the highest peaks. Each recorded level is corrected in the receiver using
appropriate factors for cables, connectors, antennas, and preamplifier gain.
When testing above 18 GHz, the receive antenna is located at 1meter from the EUT and
the antenna height is restricted to a maximum of 2.5 meters.
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REAR VIEW
0.4m
AC Outlets (flush-mounted)
0.8m
SIDE VIEW
Typical Test Configuration for Radiated Field Strength Measurements
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EUT
d
Antenna
The anechoic materials on the walls and ceiling ensure compliance with the normalized site
attenuation requirements of CISPR 16 / CISPR 22 / ANSI C63.4 for an alternate test site at the
measurement distances used.
Floor-standing equipment is placed on the floor with insulating supports between the unit and the
ground plane.
EUT
d
Antenna
height range
1 to 4 m
0.8m
Test Configuration for Radiated Field Strength Measurements
Semi-Anechoic Chamber, Plan and Side Views
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CONDUCTED EMISSIONS FROM ANTENNA PORT
Direct measurements of power, bandwidth and power spectral density are performed,
where possible, with the antenna port of the EUT connected to either the power meter or
spectrum analyzer via a suitable attenuator and/or filter. These are used to ensure that
the front end of the measurement instrument is not overloaded by the fundamental
transmission.
EUT
Attenuator
(optional)
Spectrum
Analyzer (or
Power Meter)
Test Configuration for Antenna Port Measurements
Measurement bandwidths (video and resolution) are set in accordance with the relevant
standards and Elliott’s test procedures for the type of radio being tested. When power
measurements are made using a resolution bandwidth less than the signal bandwidth the
power is calculated by summing the power across the signal bandwidth using either the
analyzer channel power function or by capturing the trace data and calculating the power
using software. In both cases the summed power is corrected to account for the
equivalent noise bandwidth (ENBW) of the resolution bandwidth used.
If power averaging is used (typically for certain digital modulation techniques), the EUT
is configured to transmit continuously. Power averaging is performed using either the
built-in function of the analyzer or, if the analyzer does not feature power averaging,
using external software. In both cases the average power is calculated over a number of
sweeps (typically 100). When the EUT cannot be configured to continuously transmit
then either the analyzer is configured to perform a gated sweep to ensure that the power
is averaged over periods that the device is transmitting or power averaging is disabled
and a max-hold feature is used.
If a power meter is used to make output power measurements the sensor head type (peak
or average) is stated in the test data table.
BANDWIDTH MEASUREMENTS
The 6dB, 20dB and/or 26dB signal bandwidth is measured in using the bandwidths
recommended by ANSI C63.4. When required, the 99% bandwidth is measured using
the methods detailed in RSS GEN.
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SPECIFICATION LIMITS AND SAMPLE CALCULATIONS
The limits for conducted emissions are given in units of microvolts, and the limits for
radiated emissions are given in units of microvolts per meter at a specified test distance.
Data is measured in the logarithmic form of decibels relative to one microvolt, or dB
microvolts (dBuV). For radiated emissions, the measured data is converted to the field
strength at the antenna in dB microvolts per meter (dBuV/m). The results are then
converted to the linear forms of uV and uV/m for comparison to published
specifications.
For reference, converting the specification limits from linear to decibel form is
accomplished by taking the base ten logarithm, then multiplying by 20. These limits in
both linear and logarithmic form are as follows:
GENERAL TRANSMITTER RADIATED EMISSIONS SPECIFICATION LIMITS
The table below shows the limits for the spurious emissions from transmitters that fall in
restricted bands1 (with the exception of transmitters operating under FCC Part 15
Subpart D and RSS 210 Annex 9), the limits for all emissions from a low power device
operating under the general rules of RSS 310 (tables 3 and 4), RSS 210 (table 2) and
FCC Part 15 Subpart C section 15.209.
1
Frequency
Range
(MHz)
0.009-0.490
Limit
(uV/m)
Limit
(dBuV/m @ 3m)
2400/FKHz @ 300m
67.6-20*log10(FKHz) @ 300m
0.490-1.705
24000/FKHz @ 30m
87.6-20*log10(FKHz) @ 30m
1.705 to 30
30 @ 30m
29.5 @ 30m
30 to 88
100 @ 3m
40 @ 3m
88 to 216
150 @ 3m
43.5 @ 3m
216 to 960
200 @ 3m
46.0 @ 3m
Above 960
500 @ 3m
54.0 @ 3m
The restricted bands are detailed in FCC 15.203, RSS 210 Table 1 and RSS 310 Table 2
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OUTPUT POWER LIMITS – DIGITAL TRANSMISSION SYSTEMS
The table below shows the limits for output power and output power density. Where the
signal bandwidth is less than 20 MHz the maximum output power is reduced to the
power spectral density limit plus 10 times the log of the bandwidth (in MHz).
Operating Frequency
(MHz)
902 – 928
2400 – 2483.5
5725 – 5850
Output Power
Power Spectral Density
1 Watt (30 dBm)
1 Watt (30 dBm)
1 Watt (30 dBm)
8 dBm/3kHz
8 dBm/3kHz
8 dBm/3kHz
The maximum permitted output power is reduced by 1dB for every dB the antenna gain
exceeds 6dBi. Fixed point-to-point applications using the 5725 – 5850 MHz band are
not subject to this restriction.
TRANSMIT MODE SPURIOUS RADIATED EMISSIONS LIMITS – FHSS and DTS SYSTEMS
The limits for unwanted (spurious) emissions from the transmitter falling in the
restricted bands are those specified in the general limits sections of FCC Part 15 and
RSS 210. All other unwanted (spurious) emissions shall be at least 20dB below the
level of the highest in-band signal level (30dB if the power is measured using the sample
detector/power averaging method).
SAMPLE CALCULATIONS - RADIATED EMISSIONS
Receiver readings are compared directly to the specification limit (decibel form). The
receiver internally corrects for cable loss, preamplifier gain, and antenna factor. The
calculations are in the reverse direction of the actual signal flow, thus cable loss is added
and the amplifier gain is subtracted. The Antenna Factor converts the voltage at the
antenna coaxial connector to the field strength at the antenna elements.
A distance factor, when used for electric field measurements above 30MHz, is
calculated by using the following formula:
Fd = 20*LOG10 (Dm/Ds)
where:
Fd = Distance Factor in dB
Dm = Measurement Distance in meters
Ds = Specification Distance in meters
For electric field measurements below 30MHz the extrapolation factor is either
determined by making measurements at multiple distances or a theoretical value is
calculated using the formula:
Fd = 40*LOG10 (Dm/Ds)
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Measurement Distance is the distance at which the measurements were taken and
Specification Distance is the distance at which the specification limits are based. The
antenna factor converts the voltage at the antenna coaxial connector to the field strength
at the antenna elements.
The margin of a given emission peak relative to the limit is calculated as follows:
Rc = Rr + Fd
and
M = Rc - Ls
where:
Rr = Receiver Reading in dBuV/m
Fd = Distance Factor in dB
Rc = Corrected Reading in dBuV/m
Ls = Specification Limit in dBuV/m
M = Margin in dB Relative to Spec
File: R82538
Page 18
Elliott Laboratories -- EMC Department
Test Report
Report Date: March 23, 2011
Appendix A Test Equipment Calibration Data
Radiated Emissions, 1000 - 18,000 MHz, 13-Mar-11
Manufacturer
Description
Hewlett Packard
Microwave Preamplifier, 126.5GHz
Hewlett Packard
SpecAn 9 kHz - 40 GHz, FT
(SA40) Blue
EMCO
Antenna, Horn, 1-18 GHz
Micro-Tronics
Band Reject Filter, 5725-5875
MHz
Model
8449B
Asset #
785
Cal Due
5/26/2011
8564E (84125C)
1393
4/14/2011
3115
BRC50705-02
1561
1682
6/22/2012
3/29/2011
Asset #
2139
Cal Due
1/26/2012
Radio Antenna Port (Power and Spurious Emissions), 15-Mar-11
Manufacturer
Description
Model
Agilent
PSA, Spectrum Analyzer,
E4446A
(installed options, 111, 115, 123,
1DS, B7J, HYX)
File: R82538
Page 19
Elliott Laboratories -- EMC Department
Test Report
Report Date: March 23, 2011
Appendix B Test Data and Test Configuration Photographs
File: R82538
Page 20
EMC Test Data
Client: Ubiquiti Networks
Model: NanoBridge M5
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Class: Environment: -
Contact: Jennifer Sanchez
Emissions Standard(s): India
Immunity Standard(s): -
EMC Test Data
For The
Ubiquiti Networks
Model
NanoBridge M5
Date of Last Test: 3/19/2011
R82538
Cover
Page 21
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
RSS 210 and FCC 15.247 (DTS) Antenna Port Measurements
MIMO and Smart Antenna Systems
Power, PSD, Bandwidth and Spurious Emissions
Test Specific Details
Objective:
The objective of this test session is to perform final qualification testing of the EUT with respect to the
specification listed above.
Date of Test: 3/15/2011
Test Engineer: Mehran Birgani
Test Location: Radio Lab
Config. Used: 1
Config Change: None
EUT Voltage: POE
General Test Configuration
The EUT was connected to the spectrum analyzer or power meter via a suitable attenuator. All measurements were made on each
chain individually. All measurements have been corrected to allow for the external attenuators used.
Ambient Conditions:
Temperature:
Rel. Humidity:
13-18 °C
30-50 %
Summary of Results
Test Performed
Limit
Pass / Fail
1
Output Power
15.247(b)
PASS
2
Power spectral Density (PSD)
15.247(d)
PASS
3
Minimum 6dB Bandwidth
15.247(a)
PASS
4
Spurious emissions
15.247(b)
PASS
Run # Pwr setting
Chain A + B
Avg Pwr
Result / Margin
HT20: 35.8 dBm EIRP
HT40: 35.3 dBm EIRP
HT20: -14.6 dBm/3kHz
HT40: -13.3 dBm/3kHz
HT20: 16.6 MHz
HT40: 37.1 MHz
All singals were below
the -30dBc limit
Modifications Made During Testing
No modifications were made to the EUT during testing
Deviations From The Standard
No deviations were made from the requirements of the standard.
R82538
DTS HT20 and HT40 RF Port
Page 22
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Run #1: Output Power - Chain A + B
Transmitted signal on chain is coherent ? Yes
5840 MHz, HT20
PCDAC Setting
Output Power (dBm) Note 1
Antenna Gain (dBi)
eirp (dBm) Note 2
Chain 1
5850 MHz, HT20
PCDAC Setting
Output Power (dBm) Note 1
Antenna Gain (dBi)
eirp (dBm) Note 2
Chain 1
5860 MHz, HT20
PCDAC Setting
Output Power (dBm) Note 1
Antenna Gain (dBi)
eirp (dBm) Note 2
Chain 1
5850 MHz, HT40
PCDAC Setting
Output Power (dBm) Note 1
Antenna Gain (dBi)
eirp (dBm) Note 2
Chain 1
Note 1:
Note 2:
Note 3:
R82538
Chain 2
Chain 3
Chain 4
14.0
5.0
25.0
30.0
4.6
25.0
29.6
Chain 2
7.83 dBm
28.0 dBi
35.8 dBm
Chain 3
Chain 4
14.0
4.9
25.0
29.9
4.6
25.0
29.6
Chain 2
Chain 3
Chain 4
4.7
25.0
29.7
Chain 2
Chain 3
Chain 4
4.5
25.0
29.5
4.1
25.0
29.1
8.0 dBm
0.006 W
28.0 dBi
3.778 W
0.006 W
28.0 dBi
3.786 W
Limit
8.0 dBm
0.005 W
28.0 dBi
3.401 W
0.006 W
Pass
Limit
8.0 dBm
0.006 W
Pass
Total Across All Chains
7.31 dBm
28.0 dBi
35.3 dBm
0.006 W
Pass
Total Across All Chains
7.77 dBm
28.0 dBi
35.8 dBm
14.0
0.006 W
28.0 dBi
3.834 W
Limit
Total Across All Chains
7.76 dBm
28.0 dBi
35.8 dBm
14.0
4.9
25.0
29.9
Total Across All Chains
Limit
8.0 dBm
0.006 W
Pass
Output power measured using a spectrum analyzer (see plots below) with RBW=1MHz, VB=3 MHz, sample detector, max
hold (transmitted signal was not continuous) and power integration and power integration over 50 MHz for HT20 and 80MHz
for HT40 (option #2, method 3 in KDB 558074, equivalent to method 3 of DA-02-2138A1 for U-NII devices). Spurious limit
becomes -30dBc.
As there is coherency between chains the effective antenna gain is the sum of the individual antenna gains and the eirp is the
product of the total power and the effective antenna gain
PCDAC power setting - provided for reference only.
DTS HT20 and HT40 RF Port
Page 23
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Power Plots - HT20 - 5840 MHz
R82538
DTS HT20 and HT40 RF Port
Page 24
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Power Plots - HT20 - 5850 MHz
R82538
DTS HT20 and HT40 RF Port
Page 25
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Power Plots - HT20 - 5860 MHz
R82538
DTS HT20 and HT40 RF Port
Page 26
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Power Plots - HT40 - 5850 MHz
R82538
DTS HT20 and HT40 RF Port
Page 27
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Run #2: Power spectral Density
PCDAC
Setting
18
18
18
18
Note 1:
Note 2:
R82538
Frequency (MHz)
5840, HT20
5850, HT20
5860, HT20
5850, HT40
Chain 1
-18.0
-17.3
-17.8
-15.7
PSD (dBm/3kHz) Note 1
Chain 2
Chain 3
Chain 4
-18.4
-19.6
-17.5
-17.2
Total
-15.2
-15.3
-14.6
-13.3
Limit
dBm/3kHz
8.0
8.0
8.0
8.0
Result
Pass
Pass
Pass
Pass
Power spectral density measured using RB=3 kHz, VB=10kHz, analyzer with peak detector and with a sweep time set to
ensure a dwell time of at least 1 second per 3kHz. The measurement is made at the frequency of PPSD determined from
preliminary scans using RB=3kHz using multiple sweeps at a faster rate over the 6dB bandwidth of the signal.
PSD measurements made at a higher power setting than the power settings to be used in normal operation. By meeting the
requirements at the hgiher power setting the device also complies with the power settings at the lower power setting.
DTS HT20 and HT40 RF Port
Page 28
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
R82538
Class: N/A
DTS HT20 and HT40 RF Port
Page 29
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
R82538
Class: N/A
DTS HT20 and HT40 RF Port
Page 30
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
R82538
Class: N/A
DTS HT20 and HT40 RF Port
Page 31
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
R82538
Class: N/A
DTS HT20 and HT40 RF Port
Page 32
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Run #3: Signal Bandwidth, Antenna Port Chain A
Frequency (MHz)
Mode, Chain
5840 HT20, A
5860 HT20, A
5850 HT20, A
5850 HT20, B
5850 HT40, A
5850 HT40, B
Note 1:
Note 1:
Resolution
Bandwidth
1MHz
1MHz
1MHz
1MHz
1MHz
1MHz
Bandwidth (MHz)
6dB
99%
16.6
16.9
16.8
16.9
36.5
37.1
99% bandwidth measurement not required.
For HT20 mode measurements were made on both chains on the center channel to verify that the signals had the same
bandwidth. Measurements on the top and bottom channels were then limited to Chain A.
HT20 Chain A low channel
R82538
DTS HT20 and HT40 RF Port
Page 33
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
HT20 Chain A center channel
HT20 Chain A high channel
R82538
DTS HT20 and HT40 RF Port
Page 34
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
HT20 Chain B center channel
HT40 Chain A center channel
R82538
DTS HT20 and HT40 RF Port
Page 35
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
HT40 Chain B center channel
R82538
DTS HT20 and HT40 RF Port
Page 36
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Run #4: Out of Band Spurious Emissions, Antenna Port J5.
Mode, Chain
Frequency (MHz)
Limit
Result
HT20, Chain A
HT20, Chain A
HT20, Chain A
HT20, Chain B
HT20, Chain B
HT20, Chain B
HT40, Chain A
HT40, Chain B
5840
5850
5860
5840
5850
5860
5850
5850
-30dBc
-30dBc
-30dBc
-30dBc
-30dBc
-30dBc
-30dBc
-30dBc
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Pass
All measurements made at a higher channel power setting than the setting used for normal operation as representing worst-case
R82538
DTS HT20 and HT40 RF Port
Page 37
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Plots for low channel, power setting = 21, Chain A, HT20
Additional plot from 5800 - 5850 MHz showing compliance with -30dBc at the band edge.
R82538
DTS HT20 and HT40 RF Port
Page 38
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Plots for center channel, power setting = 22, Chain A, HT20
Plots for high channel, power setting = 22, Chain A, HT20
R82538
DTS HT20 and HT40 RF Port
Page 39
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Additional plot from 5850 - 5900 MHz showing compliance with -30dBc at the band edge.
Plots for low channel, power setting = 18, Chain B, HT20
R82538
DTS HT20 and HT40 RF Port
Page 40
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Additional plot from 5800 - 5850 MHz showing compliance with -30dBc at the band edge.
Plots for center channel, power setting = 18, Chain B, HT20
R82538
DTS HT20 and HT40 RF Port
Page 41
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Plots for high channel, power setting = 18, Chain B, HT20
Additional plot from 5850 - 5900 MHz showing compliance with -30dBc at the band edge.
R82538
DTS HT20 and HT40 RF Port
Page 42
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Plots for center channel, power setting = 18, Chain A, HT40
Additional plot from 5800 - 5850 MHz showing compliance with -30dBc at the band edge.
R82538
DTS HT20 and HT40 RF Port
Page 43
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Additional plot from 5850 - 5900 MHz showing compliance with -30dBc at the band edge.
Plots for center channel, power setting = 18, Chain B, HT40
R82538
DTS HT20 and HT40 RF Port
Page 44
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Additional plot from 5800 - 5850 MHz showing compliance with -30dBc at the band edge.
Additional plot from 5850 - 5900 MHz showing compliance with -30dBc at the band edge.
R82538
DTS HT20 and HT40 RF Port
Page 45
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
RSS 210 and FCC 15.247 (DTS) Radiated Spurious Emissions
Test Specific Details
Objective:
The objective of this test session is to perform final qualification testing of the EUT with respect to the
specification listed above.
General Test Configuration
The EUT and all local support equipment were located on the turntable for radiated spurious emissions testing.
For radiated emissions testing the measurement antenna was located 3 meters from the EUT.
Ambient Conditions:
Temperature:
Rel. Humidity:
10-15 °C
30-50 %
Summary of Results - Device Operating in the 5825 - 5875 MHz Band
Run #
1
2
Mode
Channel
Power
Setting
n20
168
PDAC17
n20
170
PDAC17
n20
172
PDAC17
n40
170
PDAC17
Measured
Power
Test Performed
Limit
Result / Margin
Radiated Emissions,
1 - 40GHz
Radiated Emissions,
1 - 40GHz
Radiated Emissions,
1 - 40GHz
Radiated Emissions,
1 - 40GHz
FCC Part 15.209 /
15.247( c)
FCC Part 15.209 /
15.247( c)
FCC Part 15.209 /
15.247( c)
FCC Part 15.209 /
15.247( c)
52.1dBµV/m @
1560.1MHz (-1.9dB)
51.8dBµV/m @
1560.0MHz (-2.2dB)
51.8dBµV/m @
1560.1MHz (-2.2dB)
51.8dBµV/m @
1560.1MHz (-2.2dB)
Modifications Made During Testing
No modifications were made to the EUT during testing
Deviations From The Standard
No deviations were made from the requirements of the standard.
Note: From 18-40GHz was scanned in near field, all emissions were within noise floor or more than 20dB below the limit.
R82538
DTS RE 13-Mar-11
Page 46
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Run #1: Radiated Spurious Emissions, 30 - 40000 MHz. Operating Mode: 802.11n 20MHz
Date of Test: 3/13/2011
Test Location: FT Chamber #7
Test Engineer: Rafael Varelas
Run #1a: Low Channel 168 @ 5840 MHz
Other Spurious Emissions
Frequency
Level
MHz
dBµV/m
1560.060
52.1
1560.090
53.1
3893.380
43.5
3893.180
48.5
1170.060
50.2
1170.080
51.2
7786.720
54.2
Note 1:
Note 2:
Note 3:
R82538
Pol
V/H
H
H
H
H
H
H
H
15.209 / 15.247
Limit
Margin
54.0
-1.9
74.0
-20.9
54.0
-10.5
74.0
-25.5
54.0
-3.8
74.0
-22.8
Detector
Pk/QP/Avg
AVG
PK
AVG
PK
AVG
PK
Azimuth
degrees
42
42
348
348
16
16
Height
meters
1.0
1.0
1.7
1.7
1.0
1.0
Comments
RB 1 MHz;VB 10 Hz;Pk
RB 1 MHz;VB 3 MHz;Pk
RB 1 MHz;VB 10 Hz;Pk
RB 1 MHz;VB 3 MHz;Pk
RB 1 MHz;VB 10 Hz;Pk
RB 1 MHz;VB 3 MHz;Pk
Not in a restricted band
Note 3
Note 3
Note 3
Note 3
Note 2
For emissions in restricted bands, the limit of 15.209 was used. For all other emissions, the limit was set 30dB below the
level of the fundamental and measured in 100kHz.
Signal is not in a restricted band - compliance with the -30dBc requirement is met, refer to antenna port measurements.
Signal is from the digital device and not related to transmitter.
DTS RE 13-Mar-11
Page 47
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Run #1b: Center Channel 170 @ 5850 MHz
Other Spurious Emissions
Frequency
Level
MHz
dBµV/m
1560.000
51.8
1559.940
52.9
3900.070
43.5
3899.970
48.3
1170.060
50.1
1170.040
51.3
7800.130
52.6
Note 1:
Note 2:
Note 3:
R82538
Pol
V/H
H
H
H
H
H
H
15.209 / 15.247
Limit
Margin
54.0
-2.2
74.0
-21.1
54.0
-10.5
74.0
-25.7
54.0
-3.9
74.0
-22.7
Detector
Pk/QP/Avg
AVG
PK
AVG
PK
AVG
PK
Azimuth
degrees
39
39
343
343
15
15
Height
meters
1.0
1.0
1.0
1.0
1.0
1.0
Comments
RB 1 MHz;VB 10 Hz;Pk
RB 1 MHz;VB 3 MHz;Pk
RB 1 MHz;VB 10 Hz;Pk
RB 1 MHz;VB 3 MHz;Pk
RB 1 MHz;VB 10 Hz;Pk
RB 1 MHz;VB 3 MHz;Pk
Not in a restricted band
Note 3
Note 3
Note 3
Note 3
Note 2
For emissions in restricted bands, the limit of 15.209 was used. For all other emissions, the limit was set 30dB below the
level of the fundamental and measured in 100kHz.
Signal is not in a restricted band - compliance with the -30dBc requirement is met, refer to antenna port measurements.
Signal is from the digital device and not related to transmitter.
DTS RE 13-Mar-11
Page 48
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Run #1c: High Channel 172 @ 5860 MHz
Other Spurious Emissions
Frequency
Level
MHz
dBµV/m
1560.060
51.8
1560.070
52.8
1170.030
50.0
1170.010
51.1
3906.720
43.6
3906.670
48.9
7813.440
52.8
Note 1:
Note 2:
Note 3:
R82538
Pol
V/H
H
H
H
H
H
H
V
15.209 / 15.247
Limit
Margin
54.0
-2.2
74.0
-21.2
54.0
-4.0
74.0
-22.9
54.0
-10.4
74.0
-25.1
Detector
Pk/QP/Avg
AVG
PK
AVG
PK
AVG
PK
Azimuth
degrees
39
39
17
17
345
345
Height
meters
1.0
1.0
1.0
1.0
1.0
1.0
Comments
RB 1 MHz;VB 10 Hz;Pk
RB 1 MHz;VB 3 MHz;Pk
RB 1 MHz;VB 10 Hz;Pk
RB 1 MHz;VB 3 MHz;Pk
RB 1 MHz;VB 10 Hz;Pk
RB 1 MHz;VB 3 MHz;Pk
Note 3
Note 3
Note 3
Note 3
Note 2
For emissions in restricted bands, the limit of 15.209 was used. For all other emissions, the limit was set 30dB below the
level of the fundamental and measured in 100kHz.
Signal is not in a restricted band - compliance with the -30dBc requirement is met, refer to antenna port measurements.
Signal is from the digital device and not related to transmitter.
DTS RE 13-Mar-11
Page 49
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Run #2: Radiated Spurious Emissions, 30 - 40000 MHz. Operating Mode: 802.11n 40MHz
Run #2a: Channel 170 @ 5850 MHz
Other Spurious Emissions
Frequency
Level
MHz
dBµV/m
1560.060
51.8
1560.110
53.0
3900.050
44.0
3899.970
49.5
1170.040
50.0
1170.080
51.1
7800.130
55.5
Note 1:
Note 2:
Note 3:
R82538
Pol
V/H
H
H
H
H
H
H
V
15.209 / 15.247
Limit
Margin
54.0
-2.2
74.0
-21.0
54.0
-10.0
74.0
-24.5
54.0
-4.0
74.0
-22.9
Detector
Pk/QP/Avg
AVG
PK
AVG
PK
AVG
PK
Azimuth
degrees
43
43
344
344
18
18
Height
meters
1.0
1.0
1.0
1.0
1.0
1.0
Comments
RB 1 MHz;VB 10 Hz;Pk
RB 1 MHz;VB 3 MHz;Pk
RB 1 MHz;VB 10 Hz;Pk
RB 1 MHz;VB 3 MHz;Pk
RB 1 MHz;VB 10 Hz;Pk
RB 1 MHz;VB 3 MHz;Pk
Note 3
Note 3
Note 3
Note 3
Note 2
For emissions in restricted bands, the limit of 15.209 was used. For all other emissions, the limit was set 30dB below the
level of the fundamental and measured in 100kHz.
Signal is not in a restricted band - compliance with the -30dBc requirement is met, refer to antenna port measurements.
Signal is from the digital device and not related to transmitter.
DTS RE 13-Mar-11
Page 50
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
R82538
Class: N/A
DTS RE 13-Mar-11
Page 51
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
R82538
Class: N/A
DTS RE 13-Mar-11
Page 52
EMC Test Data
Client: Ubiquiti Networks
Job Number: J82287
T-Log Number: T82347
Account Manager: Susan Pelzl
Model: NanoBridge M5
Contact: Jennifer Sanchez
Standard: India
Class: N/A
Maximum Permissible Exposure
Test Specific Details
Date of Test: 3/23/2011
Test Engineer: Mark Briggs
General Test Configuration
Calculation uses the free space transmission formula:
S = (PG)/(4 πd 2)
Where: S is power density (W/m2), P is output power (W), G is antenna gain relative to isotropic, d is separation distance from
the transmitting antenna (m).
Summary of Results
Device complies with Power Density requirements at
20cm separation:
Yes
Modifications Made During Testing
Not applicable - the MPE is clauclated from the output power and antenna gain.
Deviations From The Standard
No deviations were made from the requirements of the standard.
Calculation
Use:
Antenna:
Freq.
MHz
5840-5860
General Population
25dBi per chain (effective gain = 28dBi due to coherency between chains)
EUT
Power
dBm
mW*
7.8
6.1
Cable
Loss
dB
Ant
Gain
dBi
Power
at Ant
dBm
EIRP
mW
Power Density (S)
at 20 cm
mW/cm^2
MPE Limit
at 20 cm
mW/cm^2
0
28
7.8
3828.25
0.762
1.000
Output power used is the highest value measured across all channels/modes.
R82538
RF Exposure (MPE)
Page 53
Elliott Laboratories -- EMC Department
Test Report
Report Date: March 23, 2011
This page is intentionally blank and
marks the last page of this test report.
File: R82538
Page 54