COMPONENT MAINTENANCE MANUAL
AVIATION PRODUCTS
Model FA5000
Rev. 02 Page 37
July 21/17
Description and Operation
23–70
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30
Use or disclosure of information on this sheet is subject to
the restrictions on the cover page of this document.
Notes for Figure 19:
1.
Recommended minimum wire size is #22; however, wire size #24 is electrically permissible
except for long-run power leads where #18 wire is recommended (pins 1, 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 is to be wired per aircraft. If 115 Vac, 400 Hz is supplied, connection
is to be made to pin 1 & 2 . If 28 Vdc is supplied, connection is to be made to pins 3 & 9.
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 3 is +28 VDC return.
4.
Jumper in aircraft connector. Without this jumper, the unit will not record or erase previously
recorded information, bulk erase will not activate, and test will indicate NO–GO.
5.
Pin 3 is DC return only and is not grounded in the recorder.
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 will be used for the RIPS Status Monitoring.
8.
BITE status output: ground = no fault, open = fault or CVR not installed.
9.
Audio input .05 Vrms
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3 Vrms maximum. (1Vrms nominal).
10.
Per FAA Action Notice A8300.56 dated Jan. 24, 1990, the wiring to Channels 1 and 3 may be
transposed; that is, Channel 1 will be Pilot and Channel 3 will be Third Crew Member or PA
System.
11.
GMT is inputted as low speed (12.5kbps) ARINC
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429 to pins 25 and 26. In addition, GMT
as an FSK signal combined with audio input signal on either Channel 1 or Channel 3. Both
150 (1 sec resolution) and 125 (0.1 min. resolution) for 429 GMT inputs maybe recorded.
12.
For S056 installations, double shielding is not required for new installations, however, it may
be left in place for retrofit installations.
13.
Data Link and OMS out put signals are applicable. When data link valid (pin 56) is grounded
and data link communications (pins 33 and 34) are receiving data, then ARINC
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429 label
350 Bit 16 will be set at zero = good.
14.
Pin 44 may be used to inhibit audio download when pins 7 and 8 are not jumpered and is ap-
plicable only to Data Link. For further details , refer to ARINC 757
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4, Attachment 6, Item 21.
(see Note 4)
The document reference is online, please check the correspondence between the online documentation and the printed version.