Monday, August 8, 2011

Avionics Bending: Cockpit Voice Recorder Panel - Pinout


The voice recorder panel on the L-1011 is a rather standard unit found on many different aircraft types. While the simulator will not implement an actual voice recorder, the panel can be connected to the computer in creative ways and can be used to record things using the microphone.


The schematic below shows how the cockpit voice recorder panel is connected to the actual voice recorder (one of the two black boxes).


The cockpit voice recorder panel does not have a light plate, however there are a number of interesting components:

Pin A: Test Switch Input
Pin C: 18VDC Power Input
Pin D: Test Meter (Hi)
Pin E: Test Meter (Lo)
Pin G: Erase Switch Output
Pin H: Erase Switch Input 18VDC
Pin K: Preamp (Hi)
Pin L: Preamp (Lo)
Pin N: Preamp Mic Input (Hi)
Pin P: Preamp Mic Input (Lo)
Pin V: Phone Jack (Lo)
Pin W: Phone Jack (Hi)
Pin ZF: Area Microphone Output (Hi)
Pin ZG: Area Microphone Ouput (Lo)

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