Chapter 5 - Section 2: Practical aircraft installations Flashcards
1
Q
How is a ‘hot’ mic ensured in a system where no transceiver is selected or the I/C - RT switch is off?
A
Summing amplifier will provide 2 to 5v DC as a polarising supply to any carbon mic
2
Q
How is accidental erasure of the CVR tapes prevented, even where the interlocks are made?
A
It is necessary to hold the bulk erase button in for 2 seconds, then you should hear a 400 Hz tone at the headset socket for a further 8 seconds
