11568 version 3
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Describe and apply telecommunications transmission engineering and
testing techniques
Level
6
Credits
15
Purpose
This unit standard covers modulation and demodulation techniques,
matching and filtering principles and testing techniques used in
telecommunications.
People credited with this unit standard are able to:
– demonstrate and apply knowledge of radio frequency transmission lines;
– demonstrate knowledge of modulation and multiplexing methods and
processes used in telecommunication systems;
– describe the operation and applications of specialist circuitry used to
process telecommunications signals;
– demonstrate knowledge of noise in relation to communications networks;
and
– perform measurements on transmission systems.
Subfield
Telecommunications
Domain
Communications Technology
Status
Registered
Status date
18 December 2006
Date version published
18 December 2006
Planned review date
31 December 2011
Entry information
Open.
Accreditation
Evaluation of documentation and visit by NZQA, industry
and teaching professional in the same field from another
provider.
Standard setting body (SSB)
ElectroTechnology Industry Training Organisation
Accreditation and Moderation Action Plan (AMAP) reference
0003
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
This unit standard is intended for use in engineering courses at diploma level.
 New Zealand Qualifications Authority 2016
11568 version 3
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2
This unit standard is one of two unit standards designed to cover knowledge of
telecommunications engineering at diploma level, the other being Unit 11567,
Demonstrate knowledge of telecommunications network structures and transmission
engineering. It is recommended that competency in unit standard 11567 has been
achieved before assessment against this unit standard is attempted, or equivalent
knowledge and skills demonstrated.
3
Reference
Health and Safety in Employment Act 1992;
and all subsequent amendments and replacements.
4
Definitions
Cable – any or all of copper cable, fibre optic cable, coaxial cable.
CDMA – code division multiple access.
Coaxial cable – includes 10Mbps baseband coaxial cable (Thinnet) (10Base-2) and
10Mbps baseband coaxial cable (Thicknet) (10Base-5).
DSP – digital signal processor.
DVB-T – digital video broadcast – terrestrial.
Industry practice – practice used and recommended by organisations involved in the
electrotechnology industry.
JPEG – joint photographics experts group, standard for digital encoding.
MPEG – moving picture experts group, standards for encoding.
OFDM – orthogonal frequency division multiplexing.
PM – phase modulation.
QAM – quadrature amplitude modulation.
QPSK – quadrature phase shift keying.
RF – radio frequency.
VSB – vestigial sideband.
5
All measurements are to be expressed in Système International (SI) units, and,
where required, converted from Imperial units into SI units.
6
All activities must comply with: any policies, procedures, and requirements of the
organisations involved; the standards of relevant professional bodies; and any
relevant legislative and/or regulatory requirements.
7
Range
a
performance in relation to the elements of this unit standard must comply with
the Health and Safety in Employment Act 1992;
b
laboratory and workshop safety practices are to be observed at all times.
Elements and performance criteria
Element 1
Demonstrate and apply knowledge of radio frequency transmission lines.
Performance criteria
1.1
RF transmission lines are described in accordance with industry practice.
 New Zealand Qualifications Authority 2016
11568 version 3
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Range
1.2
standing waves and power transfer; Smiths charts; line matching;
RF circuit element; passive and active components.
Transmission lines are matched with stubs and components in accordance with
industry practice.
Element 2
Demonstrate knowledge of modulation and multiplexing methods and processes used in
telecommunication systems.
includes but is not limited to – VSB, PM, QPSK, QAM, OFDM, DVB-T, CDMA.
Range
Performance criteria
2.1
Modulation methods and processes are described with the aid of circuit or block
diagrams in accordance with industry practice.
2.2
Digital modulation methods are compared with reference to differing
applications and media in accordance with industry practice.
Range
control and data information, error correction.
Element 3
Describe the operation and applications of specialist circuitry used to process
telecommunications signals.
Performance criteria
3.1
Attenuators and filters are described with the aid of diagrams in terms of
operation, purpose, and application in accordance with industry practice.
Range
3.2
active, passive, DSP.
Other specialist circuitry used to process telecommunications signals is
described with the aid of diagrams in terms of operation, purpose, and
application in accordance with industry practice.
Range
includes but is not limited to – coders and decoders, JPEG,
MPEG, delay circuits, attenuation equalisers, hybrids, modems.
Element 4
Demonstrate knowledge of noise in relation to communications networks.
Performance criteria
4.1
The sources of noise and their effects on communications networks are
explained in accordance with industry practice.
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11568 version 3
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4.2
Noise reduction methods that are used in wired and wireless networks are
described with the aid of diagrams in accordance with industry practice.
Element 5
Perform measurements on transmission systems.
Performance criteria
5.1
The parameters of filtered, modulated, demodulated, and encoded signals are
measured using given circuits and test instruments in accordance with industry
practice.
Range
normal conditions, fault conditions.
Please note
Providers must be accredited by the Qualifications Authority, or an inter-institutional body
with delegated authority for quality assurance, before they can report credits from
assessment against unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by the Qualifications Authority before
they can register credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact the ElectroTechnology Industry Training Organisation
reviewcomments@etito.co.nz if you wish to suggest changes to the content of this unit
standard.
 New Zealand Qualifications Authority 2016