Toshiba AS311 - Manual (Page 22)

20
ASCII Interface Module (AS311)
3. Cable Connections
3.1 RS-232C connection
The following figure shows the RS-232C connection.
AS311 Shielded cable RS-232C device
(1) DSR is supported only on the channel 2.
(2) Connect SG each other.
(3) Use shielded cable. The cable shield should be connected to FG at one end.
(4) It is recommended to use twisted cable for noise immunity.
Do not connect or remove the connector while the AS311 is powered. Otherwise, it
will cause damage to the AS311.
RXD
TXD
DTR
SG
DSR
RTS
CTS
1
2
3
4
5
6
7
20 FG
TXD
RXD
RTS
CTS
(DSR)
SG
DTR
NOTE