Synchronous/Asynchronous Communications Port Pin-Outs - DEC 600s Owner's Manual

Synchronous/Asynchronous Communications Port
Synchronous/ Figure B–2 shows the pin layout for the synchronous/
Asynchronous asynchronous communications port.
Communication
Port Diagram
Figure B–2 Synchronous/Asynchronous Communications Port
Table B–2 describes pin usage for the synchronous/asynchronous
Synchronous/
Asynchronous communications port.
Communications
Port Pin-outs
Table B–2 Synchronous/Asynchronous Communications Port
Pin Source
1
2
3
4
5
6
7
8
1
international committee that sets international communications standards.
2
Synchronous/Asynchronous Communications Port
1
14
Pin-outs
Signal
GND
System TX
Modem/printer RX
System RTS
Modem/printer CTS
Modem/printer DSR
GND
Modem/printer CD
International Telegraph and Telephone Consultative Committee (CCITT), an
Electronic Industries Association
13
25
MLO-008585
1 2
CCITT EIA Description
102 AB Signal ground
103 BA Modem transmitted data
104 BB Modem received data
105 CA Request to send
106 CB Clear to send
107 CC Data set ready
102 AB Signal ground
109 CF Carrier detector
(continued on next page)
Port Pin-outs B–3