Sandia Aerospace SAC 7-35 - Manual (Page 20)

3.10 TRANSPONDER INTERCONNECT
All transponder functions including the Gilham Grey Code output are on the 15 pin connec-
tor P101. The two RS232 digital outputs for new generation transponders and other avionics
that require corresponding altitude are on P100 pin 9 & 10 and 21 & 22. The two RS-232
corresponding outputs that can be independently configured. The Grey code output is en-
abled by grounding the Strobe line on J101 pin 6. There are three methods to accomplish
this grounding.
1. Permanently ground this line.
2. The transponder provides a switched ground enable signal.
3. The transponder provides a strobe-ground enable signal.
The SAC 7-35 is compatible with all three systems. Refer to the appropriate transponder
installation manual for detail. Interconnect information for the most popular transponders
can be found in Figure 3-7. For other makes of transponders, refer to the manufactures
installation manual.
Note: The RS232 serial data outputs are not affected by the Strobe/
Enable input signal.
3.11 AIM INTERCONNECT
The SAC 7-35 incorporates SANDIA’s AIM (Altitude Inflight Monitoring) feature that will
alert the pilot any time he deviates from his selected altitude by 100’ or more. The AIM
functions are on P100, pins 1, 2 and 14. A momentary pushbutton and two annunciators are
required for this function.
J100
Notes:
1. Maximum lamp current 80mA
2. AIM switch is a momentary contact
3. If the AIM function uses annunciator lamps provided by the installer, they
should be appropriately labeled. The lamp connected to pin 14 should be
labeled ‘ALT’ and the lamp connected to pin 1 should be labeled ‘SET’.
4. Sandia recommends a Green lamp for the SET Annunciator and Amber for the
ALT Annunciator
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Figure 3-6
AIM Interconnect