Table of Contents
Advertisement
PIN #
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
North Star HSIO-4
RS-232 CONNECTOR PIN ASSIGNMENTS
SIGNAL NAME
Chassis Ground
Transmit Data
Receive Data
Request to Send
Clear to Send
Data Set Ready
Signal Ground
Carrier Detect
+12 Volts
-12 Volts
No Connection
No Connection
No Connection
No Connection
No Connection
No Connection
Receive Clock
No Connection
Secondary RTS
Data Terminal Ready
No Connection
No Connection
No Connection
Transmit Clock
No Connection
74
APPENDIX A
DIRECTION
T = TERMINAL
M = MODEM
Not Connected
T to M
M to T
T to M
M to T
M to T
M to T
Used in Current Loop
Used in Current Loop
M to T
Optional Use
T to M
T to M
User/Technical Manual
ABBREVIATION
AA
BA
BB
CA
CB
CC
AB
CF
DD
SCA
CD
DA
Advertisement
Table of Contents
