NorthStar HORIZON Manual page 74

SERIAL CONNECTOR PIN ASSIGNMENTS
pin
# Signal Name
Direction
T~terminal
M~modem
Abbreviation
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
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 Connec'tion
Transmit Clock
No Connection
Receive Clock
No Connection
No Connection
Data Terminal Ready
No Connection
No Connection
No Connection
Transmit Clock
No Connection
T to M
M
to
T
T
to
M
M
to
T
M
to
T
M
to
T
(used in
(used in
M to T
M
to
T
T
to
M
T
to
M
AA
BA
BB
CA
CB
CC
AB
CF
current loop)
current loop)
DB
DD
CD
DA
North Star HORIZON Computer
74