COMPONENT MAINTENANCE MANUAL
AVIATION RECORDERS
FA2100CVR
Rev. 15 Page 58
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.
I.
CVR RIPS status monitoring (P/N: 2100
−
1X25
−
22/
−
24, 2100
−
1X26
−
( ),
and 2100
−
1X27
−
( ) only)
The Recorder Independent Power Supply (RIPS) is an ON
−
CONDITION LRU de-
signed to provide 10 minutes CVR backup power as per ARINC Characteristic
777
−
1. The CVR RIPS status monitoring provides a way to monitor the function
status of RIPS within the CVR. There is no change in CVR hardware except for the
pin assignments to the rear connector. Listed in Table 7 are the difference in the pin
assignments of the CVR rear connector for both prior to RIPS and RIPS installation.
RIPS status will be received and transmitted using Fault Warning Label 350, Label
351 and Label 352 as part of the OMS. RIPS status will also be stored within the
CSMU memory and the data will be able to be retrieved using the existing support
equipment for analysis.
Table 10.
CVR RIPS Pin Assignment for P/N: 2100
−
1X25
−
22/
−
24 & 2100
−
1X26/1X27
−
( )
Pin Number
Pre RIPS Pin
Assignment
RIPS Pin
Assignment
10
CVR Stop Recording
RIPS Active Input
29
FDR Rate A
RIPS Fault Input
38
FDR Rate B
RIPS Maintenance Input
42
CVR Ident Pin Program
RIPS Present Pin Program
(1)
RIPS Active
The CVR will use Pin 10 to receive the RIPS Active Status Discrete output. In
addition to reporting the RIPS Active status on this input, the assertion of this
input will start the CVR Stop Recording10 minute timer in order to retain this
standard CVR functionality. Since the RIPS is only active for up to 10 minutes
maximum, the function will be correct if either the RIPS or the CVR shuts down
first.
This status will be received and transmitted in the Label 350, Label 351, and
new Label 352 outputs as follows:
RIPS Active
Status
CVR Discrete in-
put (Pin 10)
SSCVR Label 350
and 352(Bit 21)
SSCVR Label 351
(Bit 12)
Not active
Open
0
1
Active
Ground
1
0
The document reference is online, please check the correspondence between the online documentation and the printed version.