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Elements and Performance Criteria

1. Prepare to find and repair faults
   • WHS/OHS requirements and workplace procedures for relevant work area are identified, obtained and applied
2. Risk control measures are applied in accordance with workplace procedures prior to commencing work
3. Risks/hazards are identified, assessed and reported to relevant person/s, and control measures implemented
4. Extent of faults are determined from reports, other documentation and discussions with relevant person/s
5. Relevant person/s is consulted to ensure the work is coordinated effectively with others
6. Tools, equipment and testing devices required to diagnose faults are obtained in accordance with workplace procedures and checked for correct operation and safety
   • Workplace risk control measures and procedures are applied
7. Need to test and measure live work is determined in accordance with WHS/OHS requirements and workplace procedures
8. Circuits/machines/plant are checked and isolated, as required, in accordance with WHS/OHS requirements and workplace procedures
9. Logical diagnostic methods are applied to diagnose sonar apparatus and system faults employing measurements and estimations of system operating parameters referenced to system operational requirements
10. Suspected fault scenarios are tested in accordance with workplace procedures and job specifications
11. Source of the fault is identified and relevant person/s engaged to rectify fault in accordance with workplace procedures and relevant industry standards
12. Faults in electronic components are rectified to raise sonar apparatus and system to its operation standard
13. System is tested to verify that the system operates as intended and to specified requirements
14. Decisions for dealing with unplanned situations are made based on job specifications and requirements and discussions with relevant person/s
15. Methods for dealing with unplanned situations are selected on the basis of safety and specified work outcomes
16. Diagnosis and rectification activities are carried out efficiently without waste of materials, damage to apparatus, the surrounding environment or services applying sustainable energy practices
17. Complete and report fault-finding and repair activities
    • WHS/OHS work completion risk control measures and workplace procedures are followed
18. Worksite is made safe in accordance with workplace procedures
19. Rectification of faults is reported in accordance with workplace procedures
20. Relevant person/s is notified that the system faults have been rectified in accordance with workplace procedures

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment. Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.
Finding and repairing faults in sonar apparatus and systems must include at least the following:	two system faults

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Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least one occasion and include:

applying logical diagnostic methods using fault scenarios to test the source of system faults identifying faults and competency needed to rectify them rectifying faults in system electronics verifying that the system operates correctly documenting fault rectification applying relevant risk identification, assessment, reporting and control requirements applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including the use of risk control measures applying sustainable energy principles and practices coordinating work with relevant person/s dealing effectively with unplanned events determining live testing/measurement requirements determining scope of work identifying and accessing materials, tools, apparatus and testing devices isolating circuits/machines/systems.

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Knowledge Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

sonar apparatus and system fault finding and repair, safe working practices and relevant standards codes and regulations, including: electronic communications, sonar system operating principles: the purpose and application of sonar systems sonar equipment encompassing: types and their applications sub-system components (i.e. functional blocks) and their function encompassing: transducer input amplifier sonar interface unit beam forming network (transmit/receive) signal processing own Doppler nullification display system headset interfaces transmitter T/R switch timer/timing sonar operating parameters sonar transmission characteristics electronic communications, sonar transducers and arrays: hazards and risk control measures transducer types, their operating principles and parameters transducer array encompassing: types and their construction applications transducer hull outfits beam forming principles and requirements transducer installation and operational maintenance electronic communications, sonar measurement and set-up: sonar parameters and measurements sonar physical parameters constraints and consequences electronic communications, radar and sonar displays devices: types and their applications – cathode-ray tube (CRT), plasma, liquid-crystal display (LCD), monochrome, colour and touch screen sub-system components (i.e. functional blocks) and their operating parameters encompassing: extra high tension (EHT) transformers detectors video distribution time base generators phase locked loops microprocessors memory devices demodulators focusing/deflection devices delay lines bleed resistors high voltage (HV) generation calibration testing and maintenance procedures typical fault finding, their symptoms and cause advanced electronic (sonar) testing and measuring devices and techniques: test/measuring devices and their application - frequency counters, and synthesisers, spectrum analysers, noise and distortion meters and radio frequency (RF) communications service monitor connection of test/measuring devices into a circuit encompassing: safety procedures loading and matching storage and delay circuit arrangement of test/measuring devices taking and interpreting readings notion of decibels, including dBm, dBr, dBu and dBo fault finding and repair: typical faults, their symptoms and cause fault diagnosis procedures and testing component replacement equipment adjustments relevant manufacturer specifications relevant WHS/OHS legislated requirements relevant workplace documentation relevant workplace policies and procedures.

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