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Specifications
Pin #
I/O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
I
I
O
I
O
O
O
I
I
I
-I
I
I
I
I
-O
I
O
I
O
--I
I
--I
-I
I
I
I
I
---
Table 2 Rear Connector Pinout
Connection
Function
Power +
Power ground
Serial ground
RxD1
TxD1
Reserved
Reserved
Reserved
Reserved
Ident
NC
A4
A1
B2
C4
C1
Reserved
Suppress
NC
Reserved
TXD2
NC
Ground
Reserved
Reserved
Ground
Ground
Standby
Ground
A2
B4
B1
C2
D4
Reserved
Ground
main DC power input
main DC power ground
RS-232 serial ground
RS-232 serial data input
RS-232 serial data output
remote ident input (ground momentarily for ident)
no connection
A4 altitude gray code input
A1 altitude gray code input
B2 altitude gray code input
C4 altitude gray code input
C1 altitude gray code input
Altitude Hold Annunciator
remote suppression input (high for suppression)
no connection
RS-232 Serial Data Output – Duplicates TxD1 Data
no connection
remote standby input (ground for standby)
A2 altitude gray code input
B4 altitude gray code input
B1 altitude gray code input
C2 altitude gray code input
D4 altitude gray code input
1
19
20
37
Viewed from rear of unit
Note:
Note:
20
Buffered serial data is output on pins 5 And 22 (TxD1 and TxD2). The same data is
output on both pins.
Second serial output (pin 22) and Altitude Hold Annunciator not available prior to
430-6090-1xx Mod G.
Apollo SL70 Installation Manual