Model FA2100 CVR
Instruction Manual
Installation & Operation
Rev. 07
Jan. 01/03
165E1846–00
Page A–39
STANDARD INTERWIRING PER ARINC SPEC 557
12
1.
115 VAC HOT OUT
2.
115 VAC HOT IN
3.
AC COMMON COLD
4.
5.
AUDIO OUT LO
6.
AUDIO OUT HI
7.
BIAS JUMPER
8.
BIAS JUMPER
9.
+27.5 Vdc INPUT (with inverter)
10.
STOP RECORDING
11.
12.
PUSH_TO_TEST
13.
PREAMP POWER GND
14.
PREAMP POWER +18 Vdc REG
15.
IND
16.
INDICATOR –
17.
CHASSIS GROUND
18.
19.
20.
21.
22.
23.
CVR FAULT
24.
25.
GMT IN B (ARINC 429) LO
26.
GMT IN A (ARINC 429) HI
27.
28.
29.
30.
LO
31.
CHANNEL 1
32.
HI
33.
34.
35.
LO
36.
CHANNEL 2
37.
HI
38.
39.
40.
41.
LO
42.
CHANNEL 3
43.
HI
44.
45.
LO
46.
CHANNEL 4
47.
HI
48.
ROTOR SPEED IN LO
49.
ROTOR SPEED IN HI
50.
51.
52.
53.
54.
55.
ERASE A
56.
57.
ERASE C
PRE–AMP POWER (+18 VDC)
PRE–AMP POWER GND
PRE-AMP OUT – HI
PRE-AMP OUT – LO
ATTENUATION MASTER
CHASSIS GROUND
24 DB ATTENUATION
12 DB ATTENUATION
6 DB ATTENUATION
1
AMP
TO
115 VAC HOT (400HZ)
TO AC COLD
5
AMPS
3
A
B
C
D
E
F
G
H
J
K
L
M
A
B
C
1
2
3
3, 7
TO 27.5VDC
MODEL A150
EXTERNAL PREAMPLIFIER
MODEL A55B
MICROPHONE
COCKPIT AREA MICROPHONE
2, 8
OR
VOICE RECORDER UNIT
FROM ROTOR
SPEED SENSOR
TO ANNUNCIATOR OR
MAINT. COMPUTER
9
5
4
10, 11
TO PILOT
MICROPHONE
TO COPILOT
MICROPHONE
SPARE MICROPHONE
TO 3RD CREW
MEMBER OR
PA SYSTEM
FROM CAPTAIN’S
CLOCK
10
10, 11
10
8
PREAMPLIFIER J2
PREAMPLIFIER J1
MIC SIGNAL INPUT
MIC SUPPLY (+6.2 VDC)
MIC SHIELD (GND)
MIC 6 VDC SUPPLY
MIC GND (SHIELD)
MIC OUTPUT
6
13
Figure A–28.
Interwiring Diagram, Voice Recorder Unit, A150 External Preamplifier,
A55B Remote Microphone
Such Installations Do Not Comply with ED–56A
