COMPONENT MAINTENANCE MANUAL
AVIATION RECORDERS
Model FA5000
Initital Issue Page 18
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.
AI
J1
PIN
AIRCRAFT INTERFACE
SIGNAL NAME
I/O
FUNCTION
3
ATE PRESENT
IN
ATE PRESENT controls Record Enable and CVR
Replay Inhibit/FDR Inhibit functions. When ATE is
not detected, all recording is enabled and CVR
Replay is disabled and FDR Inhibit is inactive.
When ATE is connected, all recording is disabled
and CVR Replay is enabled and FDR Inhibit is
active. Shunt discrete input; ARINC 573 compli
ant.
GND = ATE CONNECTED/ALL RECORDING
DISABLED/CVR REPLAY ENABLED/ FDR
INHIBITED
OPEN = ATE NOT CONNECTED/ ALL
RECORDING ENABLED/ CVR REPLAY
DISABLED/FDR NOT INHIBITED
4
AUDIO OUTPUT
(MONITOR) HIGH
OUT
Summed audio output signal from channels 1, 2,
and 3 for monitoring audio information that is be
ing stored. Single ended. 600 ohm, 10 mW, short
circuit protected; ARINC 7574. With the reference
signal applied to one channel, the output level is
2.45 Vrms ±30% into a 600 ohm load.
5
ERASE CVR INPUT A
IN
Bulk erase signal from the flight deck push to
erase switch. Bulk Erase initiates when
VOICE_ERASE_A is connected to
VOICE_ERASE_C for 2 seconds and interlock
circuits are closed (ARINC 7574 and ED56A).
Diode isolated series discrete input (ARINC 717).
The OFF threshold is less than 3VDC. ON
threshold is greater than 18VDC. Sink current is
860uA at 18.1VDC.
GND = NO ERASE
Vsupply (t > 2s) = ERASE
6
ATE ETHERNET RX ()
IN
10/100BaseT/TX Ethernet RX+ and RX differen
tial pair; IEEE803.32002. Used for integrated auto
test with results display.
7
ATE ETHERNET RX (+)
IN
8
CHANNEL 1 INPUT LOW
IN
Channel 1 audio differential signal low; 150 Hz to
3.5 kHz bandwidth, 3V RMS maximum. Imped
ance 5K ohm minimum.
9
CHANNEL 1 INPUT HIGH
IN
Channel 1 audio differential input signal high; 150
Hz to 3.5 kHz bandwidth, 3V RMS maximum. Im
pedance 5K ohm minimum.
10
AUDIO OUTPUT
(MONITOR) LOW
OUT
Signal ground return / reference signal for Audio
Monitor Output HIGH. Single ended from Main
PWA; referenced to AI PWA signal ground.
11
ERASE CVR INPUT C
OUT
Output to aircraft external Bulk Erase interlock
circuitry. Used with ERASE CVR INPUT A. Output
is +19VDC, diode isolated, through 1k ohms.
Rev.04 Page 18
May 14/13
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