COMPONENT MAINTENANCE MANUAL
AVIATION RECORDERS
FA2100CVR
Rev. 15 Page 54
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.
F
Channel Monitor/Test Select Output
F
CVR Fault Output
F
GMT Input
F
Push
−
To
−
Test Input
F
Record On Input
F
Rotor Speed Input
F
Stop Record Input
F
Test Good Output
The system level interfaces used by all configurations are:
F
Power In
F
Power Return
F
GSE Input
F
GSE Output
Data Link interfaces (P/N 2100
−
1X25/1X26/1X27
−
( ) only) are:
F
Data Link Input
F
Data Link/OMS Output
F
Data Link Valid
F
CVR Indent Pin
(1)
On
−
Board Maintenance System (OMS) Interface (P/N
2100
−
1X25/1X26/1X27
−
( ) only)
The CVR is identified as a BITE Standard A equipment so as to be portable to
other AIRBUS programs.
The CVR interfaces with the OMS through a system BITE such that the CVR
will pass fault information to the OMS (via SCI) and receive test request based
on two ARINC 429 buses (as per a BITE Type 1 principle):
F
Use of one ARINC 429 High Speed (HS) output bus for continuous fault
reporting by means of the CVR output pins 50/51 (Data Link / OMS Out).
F
Use of one ARINC 429 Low Speed (LS) input bus for test request by
means of CVR input pins 39/40 (OMS IN).
(2)
Fault Warning System (FWS) Interface
As per ARINC 757A, the CVR transmits its status at a 1 Hz rate. The status is
transmitted on Label 350 per ARINC 429 in the format depicted in Attachment
19 of ARINC 757A (CVR STATUS WORD).
The document reference is online, please check the correspondence between the online documentation and the printed version.
