COMPONENT MAINTENANCE MANUAL
AVIATION RECORDERS
FA2100CVR
Rev. 15 Page 27
Apr. 14/16
Description and Operation
23–70–04
Use or disclosure of information on this sheet is subject
to the restrictions on the cover page of this document.
1.
Recommended minimum wire size is #22: #24 is electrically permissible except for power
leads, where #18 wire is desirable on long-runs (pins 2, 3, 9, & 17)
.
Wire resistance
should not exceed 1 ohm for power leads and should not exceed 5 ohms for signal leads.
All wiring should be MIL–W–22759 or MIL–C–27500.
2.
Only one power source to be wired per aircraft. If 115 Vac, 400 Hz is supplied, connection
is to be made to pins 2 & 3. If 28 Vdc is supplied, connection is to be made to pin 9.
Shorting pins 1 & 2 is optional.
3.
Recorder ground connection to be within 1 foot of pin 17, heavy gauge wire. Shields to be
grounded at the recorder using short connections. Pin 17 is used as a +28vdc return. Con-
trol unit may be grounded in the cockpit to a chassis ground.
4.
Jumper in aircraft connector. Without this jumper, the unit will not record or erase pre-
viously recorded information, bulk erase will not activate, and test will indicate NO–GO.
5.
Pin 3 is not a DC return and is not grounded in the recorder. (see Note 3)
6.
Twisted shielded cable. Shields to be grounded at the airframe using short connections.
Tie shields to existing single point GND use for Pin 17. (see Note 3)
7.
Using the the Stop Recording function, the grounded pin 10 terminates recording within 10
minutes. When using the RIPS Active function the CVR has a backup power source or
RIPS available, pins 10, 29, 38 and 42 will be used for the RIPS Status Monitoring.
8.
BITE status output: ground = no fault, open = fault or CVR not installed.
9.
Audio input 3 Vrms maximum.
10.
In 2100
−
1010
−
( ) and 2100
−
1X20
−
( ) configurations GMT is inputted as low speed (12.5
kbps) ARINC 429 to pins 25 and 26; with the exception of 2100
−
1X20
−
02 configurations
(FSK option). In the
−
02 versions, GMT is input either as an FSK signal combined with the
audio input signals on either Channel 1 or Channel 3, or as an ARINC 429 input on pins
25 and 26. This recorder has Auto
−
Sense and will process the GMT input type.
11.
The Control Unit & Microphone information can be found in CMM, ATA No. 23
−
70
−
05, p/n:
165E1747
−
00 for ED
−
56A installations or the FA2100CVR Installation & Operation manu-
al, p/n: 165E1846
−
00.
12.
The 205E1849
−
( ) and 205E3977
−
( ) Audio Compressor cards provide for both ARINC
429 Label150 (1 sec resolution) and 125 (0.1 min. resolution) Low Speed GMT inputs.
13.
If no Erase function is desired, ground “ERASE A” on pin 55 and leave open “ERASE C”
on pin 57.
14.
Test Ind/
−
lines (pins 15 & 16) only p28 Vdc, 1ma output to illuminate the
Control Unit TEST lamp. (This is not sufficient to light an external annunciator lamp).
15.
Data Link and OMS input and output signals are applicable only to p/n: 2100
−
1X25
−
( ).
Data Link wiring is in accordance with ARINC 757
−
4, paragraph 3.9.
16.
Pin 44 may be used to inhibit audio replay when pins 7 and 8 are not jumpered and is ap-
plicable only to p/n: 2100
−
1X25
−
( ). For further details , refer to ARINC 757
−
4, Attach-
ment 6, Item 21. (see Note 4)
The document reference is online, please check the correspondence between the online documentation and the printed version.
