24885 version 1
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Demonstrate and apply knowledge of A/D and D/A conversion
Level
3
Credits
3
Purpose
This unit standard covers the principals and application of analogue to digital
and digital to analogue conversion.
People credited with this unit standard are able to:
– demonstrate knowledge of A/D and D/A converters;
– demonstrate knowledge of A/D and D/A conversion; and
– use A/D and D/A converters in a practical application.
Subfield
Electronic Engineering
Domain
Core Electronics
Status
Registered
Status date
19 May 2008
Date version published
19 May 2008
Planned review date
31 December 2013
Entry information
Open.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
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 has been developed for off-job training and assessment.
2
Definitions
A/D – analogue to digital.
ADC – analogue digital converter.
D/A – digital to analogue.
Industry practice – practice used and recommended by organisations involved in the
electrotechnology industry.
 New Zealand Qualifications Authority 2016
24885 version 1
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Elements and performance criteria
Element 1
Demonstrate knowledge of A/D and D/A converters.
Performance criteria
1.1
Terms associated with A/D and D/A converters are explained.
Range
1.2
A/D and D/A converter types are identified from schematic diagrams.
Range
1.3
evidence of four A/D and four D/A converters required.
A/D and D/A converter applications are described.
Range
1.4
may include but are not limited to – D/A conversion, A/D
conversion, ADC, flash, successive approximation, dual slope,
resolution, quantisation error, conversion time, clock pulse,
linearity, delay, output pulse train, sampling, zero cross error,
oversampling, bit, filter coefficient, multiplier, conversion laws.
Evidence of fifteen required.
evidence of four A/D and four D/A applications required.
Technical differences between four types of A/D converters and four types of
D/A converters are identified and described.
Element 2
Demonstrate knowledge of A/D and D/A conversion.
Performance criteria
2.1
A/D conversion is explained with the aid of diagrams.
Range
2.2
may include but is not limited to – characteristics, sample and
hold, conversion time, clock, sampling, cut-off frequency,
multiplier, accumulator, conversion laws.
Evidence of seven required.
D/A conversion is explained with the aid of diagrams.
Range
may include but is not limited to – converter characteristics,
conversion time, clock, sampling, cut-off frequency, multiplier,
conversion laws.
Evidence of five required.
 New Zealand Qualifications Authority 2016
24885 version 1
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Element 3
Use A/D and D/A converters in a practical application.
Performance criteria
3.1
A/D and D/A converters are applied to a given specification in accordance with
industry practice.
Range
evidence of one A/D converter and one D/A converter required.
Please note
Providers must be accredited by NZQA, 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 NZQA 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 connect@etito.co.nz
if you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016