L3 FA5000 - Page 50

COMPONENT MAINTENANCE MANUAL
AVIATION RECORDERS
Model FA5000
Initital Issue Page 8
Sep. 30/11
Description and Operation
23–70−40
Use or disclosure of information on this sheet is subject to
the restrictions on the cover page of this document.
H2 Analog_Audio_Return1  Differential analog input. Channel 1 au
dio, line low. Referenced to the Signal
Ground.
G1 Analog_Audio_Input2 I Differential analog input. Channel 2 au
dio input, line high. Referenced to the
Signal Ground.
G2 Analog_Audio_Return2  Differential analog input. Channel 2 au
dio input, line low. Referenced to the Sig
nal Ground.
F1 Analog_Audio_Input3 I Differential analog input. Channel 3 au
dio input, line high. Referenced to the
Signal Ground.
F2 Analog_Audio_Return3  Differential analog input. Channel 3 au
dio, line low. Referenced to the Signal
Ground.
D1 Analog_Audio_Input4 I Unused. Differential analog input, line
high. Referenced to the Signal Ground.
Not used in the FA5000, circuitry not
populated on AI PWA. Floating input
configuration is accommodated by soft
ware programmed tristate capability
within the Audio CODEC.
D2 Analog_Audio_Return4  Unused. Differential analog input, line
low. Referenced to the Signal Ground.
Not used in the FA5001, circuitry not
populated on AI PWA. Floating input
configuration is accommodated by
tristate capability within the Audio CO
DEC.
B1 Area_Microphone_Power O +18.5 volts DC, diode isolated and 30mA
current limited power. This output is in
parallel with the PreAmplifier_Power.
Referenced to the Signal Ground.
E1 Analog_AreaMIC_Au 
dio_HI_Input4
I Differential analog input. Cockpit Area
Microphone audio input, line high. Refer
enced to the Signal Ground.
E2 Analog_AreaMIC_Au 
dio_LO_Input4
I Differential analog input. Cockpit Area
Microphone audio input, line low. Refer
enced to the Signal Ground.
C1 Audio_Monitor_Output_Hi O Audio monitor output. Referenced to the
Signal Ground.
D7 ARINC429_RCV_A1 I Standard ARINC 429 differential input –
Aside. Assigned to ATC Digital Input.
Referenced to the Signal Ground.
The document reference is online, please check the correspondence between the online documentation and the printed version.