COMPONENT MAINTENANCE MANUAL
AVIATION RECORDERS
FA2100CVR
Rev. 15 Page 39
Apr. 14/16
Description and Operation
23–70–04
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Table 6. Audio Compressor (AC) PWA Current Configuration Where Used
Audio Compressor PWA
P/N
Model Effectivity
Notes
205E397720
2100
−
1010
−
00
2100
−
1020
−
00
2100
−
1220
−
00
205E397723
2100
−
1020
−
02
2100
−
1220
−
02
FSK Function
205E397717
2100
−
1025
−
02
2100
−
1025
−
12
2100
−
1025
−
22
2100
−
1025
−
24
2100
−
1225
−
22
2100
−
1225
−
24
2
−
hour Voice
205E397729
2100
−
1026
−
02
2100
−
1226
−
02
2
−
hour Voice
205E397737
2100
−
1027
−
02
2100
−
1227
−
02
205E397722
2100
−
1010
−
50
2100
−
1010
−
51
2100
−
1020
−
50
2100
−
1020
−
51
AGC Function
(1)
Audio Interface
The Audio Interface consists of four audio input channels. Input Channels 1–3
correspond to one of three crew member voice inputs. The ED–56A and
ED
−
112 reference voltage input to the AC for Channels 1–3 is 2.0 Vrms into a
10 kohm load and a specified bandwidth of 150–3500 Hz. Input Channel 4 cor-
responds to the Cockpit Area Microphone (CAM) audio input. This channel has
an ED–56A and ED
−
112 reference voltage input of 1.33 Vrms input into a
10–kohm load with a specified bandwidth of 150–6000 Hz. An audio channel
return ground is included in this interface. Attenuated microphone (AMIC_IN) is
received for the Aircraft Interface.
(2)
ARINC 429 GMT Interface
The ARINC 429 GMT Interface is responsible for receiving serial TTL/CMOS
ARINC 429 Low Speed (12.5 kbps) data from the Aircraft Interface PWA.
(3)
Rotor Speed Interface
The Rotor Speed Interface consists of a single input representing rotor speed
frequency ranging from 7 to 6000 Hz with measurement error less than 2%.
The output signal is 0 – 5 V, with a 10–kohm pull–up resistor on an open collec-
tor output.
The document reference is online, please check the correspondence between the online documentation and the printed version.