Sandia Aerospace STX 165 Installation Manual User Manual
Page 18
Pin #
Description
I/O
Notes
1
Aircraft Power 11-33Vdc
In
2
RS 232A (TCMD)
In
3
Serial Ground
In
4
RS232B (Altitude In)
In
9600 Baud
5
Aircraft Ground
In
6
No C
7
RS232A (TSTAT)
Out
8
RS232B (Altitude Out)
Out
9600/1200 Baud Selectable.
9600 Baud Factory Default
9
Suppression
In
<.5V= Low, >1.8V=High)
Pin #
Description
I/O
Notes
1
Altitude D4
In
2
Altitude A1
In
3
Altitude A2
In
4
Altitude A4
In
5
Altitude B1
In
6
Baud Select
In
< .5v on Pin Changes J3 Pin 8 to
1200 Baud
7
Signal Ground
Grey Code
8
Aircraft Power
Out
Non Switchable, 1 Amp Max.
9
Altitude B2
In
10
Altitude B4
In
11
Altitude C1
In
12
Altitude C4
In
13
Altitude C2
In
14
Remote On-Off
In
< .5V toggles On-Off. Momen-
tary for On, 3 seconds +/- .3
seconds for Off
15
Transponder Select
In
Selects/deselects active transpon-
der (ground on pin 15 de-selects
STX 165R as active transponder)
J3
9 Pin Sub-D
J2
15 Pin Sub-D
3.7.2
STX 165R Remote Mounted Unit
17