Garmin GAD 43 Installation Manual - Page 35

Heading Valid Out, 2.6.4, Spare Disc Out* 2 function not currently implemented, 2.7 Relays

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4.2.6.3 Heading Valid Out* If magnetic heading information from the AHRS is invalid or not present, this discrete goes inactive; otherwise this discrete output is active. 4.2.6.4 Spare Disc Out* 2 (function not currently implemented) Reserved for future functionality. 4.2.7 Relays Pin Name ATTITUDE VALID RELAY NO ATTITUDE VALID RELAY NC ATTITUDE VALID RELAY COMMON AP INTERLOCK RELAY VALID NO AP INTERLOCK RELAY VALID NC AP INTERLOCK RELAY COMMON Pin I/O 3 -- 4 -- 20 -- 22 -- 21 -- 5 -- The GAD 43 provides two relays that switch based on the validity of the attitude information provided by the GRS 77. The normally-open (NO) contact on each relay is electrically connected to the common (COMMON) contact when the attitude solution is valid. The normally-closed (NC) contact on each relay is electrically connected to the common (COMMON) contact when the attitude solution is invalid. See APPENDIX C for wiring interconnect information. GAD 43 Installation Manual 190-00899-00 Page 4-7 Rev. B

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GAD 43 Installation Manual
Page 4-7
190-00899-00
Rev. B
4.2.6.3
Heading Valid Out*
If magnetic heading information from the AHRS is invalid or not present, this discrete goes inactive;
otherwise this discrete output is active.
4.2.6.4
Spare Disc Out* 2 (function not currently implemented)
Reserved for future functionality.
4.2.7 Relays
Pin Name
Pin
I/O
ATTITUDE VALID RELAY NO
3
--
ATTITUDE VALID RELAY NC
4
--
ATTITUDE VALID RELAY COMMON
20
--
AP INTERLOCK RELAY VALID NO
22
--
AP INTERLOCK RELAY VALID NC
21
--
AP INTERLOCK RELAY COMMON
5
--
The GAD 43 provides two relays that switch based on the validity of the attitude information provided by
the GRS 77.
The normally-open (NO) contact on each relay is electrically connected to the common
(COMMON) contact when the attitude solution is valid.
The normally-closed (NC) contact on each relay
is electrically connected to the common (COMMON) contact when the attitude solution is invalid.
See APPENDIX C for wiring interconnect information.