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The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. |
DC and AC circuit configuration may include: | DC circuit:resistancessingle DC voltage source:batteryDC voltage supplysolar panelAC circuit:inductors, capacitors and resistances single AC voltage source:AC generatorAC voltage supplyalternatorlow voltage AC source. |
Safe work practices may relate to: | component tolerances not exceeded - fire riskcorrect use of power supply and test equipmentidentifying any electrical safety hazardsisolation from main supplyoverdrawing of currentpower down during set up procedurewell laid out circuitry:avoid contact with external sourcesavoid shorting of components. |
Test equipment may include: | digital multimetermultimeterohmmetervoltmeter. |
Calculations may include: | application of Ohm's lawengineering notationpower calculationspower consumption and efficienciesvoltage dividersvoltage, resistance and current calculations. |
Electrical quantities may include: | currentpower voltage. |
Probable faults may include: | blown fusecracked circuit boardfailed componentsfaulty power supplyforeign batteryintermittent faultsloose connectionsopen circuitshort circuitshort to groundsplit pairswater damage. |
Characteristics of an analog signal and a digital signal may include: | analog signal characteristics: continuously variable, infinite number of statesintelligence based on recreating exact waveshapesignal to noise ratio increase with amplificationdigital signal characteristics:encryptionerror detection and correction finite number of discrete states high noise immunityintelligence based on ability to discern only 2 statesregenerationtype of square wave (complex waveform). |
Building blocks may include: | analog:amplifiersattenuators displaysfiltersoscillatorstransducersdigital:ADC and DACcomputerscounter data routers, switches and bridgesdigital amplifierdigital displayinput and output transducersmultiplexer. |
Transmission characteristics may include: | attenuationbalanced characteristic impedance (Zo)crosstalkfrequency rangetransmission windows for glass optical fibre unbalancedwaveguide cut-off frequency. |
Types of cable may include: | aluminium and copper DC busbarscoaxial cablemulti-pair communications cableoptical fibreperformance data cable CAT 5 and higherrack and sub-rack alarm and power distribution cablesshielded twisted pair (STP) communications cableunshielded twisted pair (UTP) communications cable. |
Application characteristics may include: | audiodatadigital subscriber line (DSL)Ethernetmicrowaveoptical/laserpowerradio frequency (RF)satellitevideo. |
Wireless connections may include: | 2-way radioAM, FMBluetoothcellularinfra-red microwaveoptical/laser satellitewireless fidelity (WiFi)worldwide interoperability for microwave access (WiMAX). |