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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 relevant 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
7. Find and repair faults
   • Workplace risk control measures and procedures are applied
8. Need to test and measure live work is determined in accordance with WHS/OHS requirements and workplace procedures
9. Circuits/machines/plant are checked and isolated, as required, in accordance with WHS/OHS requirements and workplace procedures
10. Logical diagnostic methods are applied to diagnose radar apparatus and systems faults employing measurements and estimations of system operating parameters referenced to system operational requirements in accordance with workplace procedures and relevant industry standards
11. Suspected fault scenarios are tested as being the source of system problems in accordance with workplace procedures and job specifications
12. Source of the fault is identified and relevant person/s engaged to rectify the fault where it is outside the scope of capability in accordance with workplace procedures and relevant industry standards
13. Faults in the electronic components of the system are rectified to raise radar apparatus and system to its operation standard in accordance with workplace procedures and job specifications
14. System is tested to verify system operates in accordance with workplace procedures and job specifications
15. Decisions for dealing with unplanned situations are made in accordance with workplace procedures, relevant industry standard and discussions with relevant person/s
16. Methods for dealing with unplanned situations are selected on the basis of safety and specified work outcomes
17. Diagnosis and rectification activities are carried out efficiently without waste of materials, damage to apparatus, the surrounding environment or services applying sustainable energy practices
18. Complete and report fault-finding and repair activities
    • WHS/OHS work completion risk control measures and workplace procedures are followed
19. Worksite is made safe in accordance with workplace procedures
20. Rectification of faults is reported in accordance with workplace procedures
21. 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.
Fault finding and repairing faults in radar apparatus and systems must include at least the following:	two system faults in electronic radar apparatus and systems

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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 dealing with unplanned events 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 determining live testing/measurement requirements determining scope of work identifying and accessing materials, tools, apparatus and testing devices isolating circuits/machines/system.

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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:

radar apparatus and system fault finding and repair, safe working practices and relevant standards, codes and regulations, including: electronic communications, secondary radar and related systems: secondary radar principles encompassing: role of secondary radar transponder operation operating principles signal processing pulse generation, transmission and detection mode generation, detection and response display symbol generation synchronisation with primary radar advantages over primary radar with respect to clutter signal/noise ratio; transmit power required for operation interfaces to other systems providing information for transmission of mode data encompassing: slaving/synchronisation to primary radar clutter reduction/elimination defruiting degarbling interfaces to other systems range/ducting effects advantages over primary radar power supplies and uninterrupted power supplies (UPS) international standards national curriculum hot standby, cold standby application of secondary radar systems - traffic collision avoidance system (TCAS), selective identification system (SIF), air traffic control radar beacon system (ATCRBS), instrument landing system (ILS), tactical air navigation (TACAN), navigation systems (VOR, GPS and DME), radar altimeter, jamming, electronic warfare, second time round returns (STRR), and identification–friend or foe radar (IFF) 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 electronic communications, radar fundamentals: hazards and risk control measures purpose and uses of radar environmental conditions affecting radar design factors which affect performance propagation of electromagnetic waves pulse forming circuits typical radar transmitter encompassing: limitations and applications of each type typical radar receivers encompassing: sub-system components (i.e. functional blocks) and their operating parameters limitations and applications radar antennae encompassing: types, application and radiation patterns - parabolic, phased array, log periodic, and cos q antenna gain efficiency length and height factors microwave techniques, devices and applications encompassing: oscillators amplifiers modulators and demodulators mixers and detectors types and characteristics of various radar systems relevant industry standards, codes and regulations relevant manufacturer specifications relevant safe work method statements (SWMS)/job safety assessments or risk mitigation processes relevant WHS/OHS legislated requirements relevant workplace documentation relevant workplace policies and procedures.

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