10
MODEM COMMUNICATION:
"DTE" CONNECTOR
SIGNAL
PIN
TXD
RXD
SIG GND
RTS
CTS
DTR
CD
2
3
7
4
5
20
8
MODEM
TELEPHONE
LINE
<100 feet
"DTE" CONNECTOR
(female - as seen on back panel)
:
14
15
16
17
18
19
20
21
22
23
24
25
1 - Earth Ground
2 - TX / TRANSMITTED DATA/
4 - RTS / REQUEST TO SEND/
5 - CTS / CLEAR TO SEND/
6
7 - Signal Ground/CURRENT LOOP TRANSMITTED/
8 - CD / CARRIER DETECT/
9 - +12V
10 - -12V
11 - CURRENT LOOP RECEIVED DATA SOURCE/
12 - CURRENT LOOP RECEIVED DATA RETURN/
13
DATA TERMINAL READY/ DTR -
CURRENT LOOP TRANSMITTED
DATA RETURN/ -
3 - RX / RECEIVED DATA/
"CUSTOM I/O" CONNECTOR:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
- Remote Shutdown
- Ground
- Spare Input
- Ground
-12V(50mA max) -
+12V(50mA max) -
Remote Shutdown
Dry Contact (15mA)
Spare Input
Dry Contact (15mA)