8) This describes the essential skills and knowledge and their level, required for this unit. Evidence shall show that knowledge has been acquired of safe working practices and installing commercial audio/video system components. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-EH110A Commercial audio/video system installation Evidence shall show an understanding of commercial audio/video system installation, applying safe working practices and relevant Standards, Codes and Regulations to an extent indicated by the following aspects T1. Sound reproduction fundamentals Sound wave propagation Timbre of sound Effects of other medium of sound waves Characteristics of the human ear Difference between mono and stereo Surround sound principles T2. Audio reproduction, electronic components Preamplifiers amplifier encompassing: Function in the reproduction chain Typical circuit arrangements Power and integrated amplifiers encompassing: Function in the reproduction chain Typical circuit arrangements Graphic equalizers encompassing: Function in the reproduction chain Typical circuit arrangements Component installation and interconnections T3. Audio reproduction, speaker fundamentals Types of speaker drives and their operating mechanism Speaker cabinet characteristics Purpose and circuit arrangement of typical cross-over networks Speaker connections T4. Loud speakers and microphones Loud speaker construction and applications Operation of circuits and cross over networks Optimum layout of speaker systems Principle and operation of microphones Speaker and microphone installation in connections T5. Specialist audio/video cabling installation and termination Features of high performance audio and video cables and interconnects High performance audio and video cables and interconnects encompassing: Installation methods and limitations Terminations techniques as specified by cable manufacturers T6. Professional audio electronics Complex audio systems used for live sound or theatre application Connections and phasing of equipment Optimum signal levels for the acoustic environment Connection and adjustment of signal processing units Tuning, adjustment and diagnosis of systems T7. Video and display set up Projectors encompassing: Aspect ratio Screen size Orientation Throw distance, vertical elevation and horizontal orientation Direct view monitors adjustments T8. Audio/video control equipment Types of control devices and their operating principles Control equipment arrangement in an audio/video system T9. Audio/video recording and replay components basic faults and repairs Sub-system components (i.e. functional blocks) and their operating parameters Common faults, their symptoms and cause. Fault location procedures and testing points Device adjustments - audio/video recording and replay components are audio cassette player/recorders, compact disk players, video cassette player/recorder, digital versatile disk and super audio compact players. T10 Electronic Safe working practice encompassing: Risk management and assessment of risk: Principle and purpose of risk management, and Processes for conducting a risk assessment Hazards associated with low-voltage, extra-low voltage and high-currents: Parts of an electronic systems and equipment that operate at low-voltage and extra-low voltage, Parts of an electronic systems and equipment where high-currents are likely. Risks and control measures associated with high-voltage: Parts of an electronic systems and equipment that operate at high-voltage, The terms used - ‘touch voltage’, ‘step voltage’, ‘induced voltage’ and ‘creepage’ as they relate to the hazards of high-voltage, and Control measures used for dealing with the hazards of high-voltage. Risks and control measures associated with low voltage: Risks associated with installation, fault finding, maintenance and repair. Control measures before, while and after working on electronic systems or equipment Isolation and tagging-off procedures. Risks and restrictions in working live. Control measures for working live. Safety, selection, use, maintenance and care of test equipment: Safety characteristics of electrical testing devices, Chemical cleaning solvents, glues and joining wastes used in electronics, Safe use of electrical testing device, and Checks and storage methods for maintaining the safety of testing devices. |