4-8
4.7. Communications terminals
These terminals are for the communications interface (option). For details of the connection, refer to the
instruction manual for the "Communications Interfaces" provided separately.
1. Communications terminals
RS-232C Terminals RS-422A Terminals RS-485 Terminals
2. RS-232C Connections
When your recorder is with the communications interface of RS-232C, three terminals of SD, RD and SG
are used but any control signal is not used. General personal computers are controlled by control signal.
Wiring processing for control signal in a connector depends upon how the control signal is used in a
personal computer. For details, refer to the instruction manual for your personal computer.
1) 9-pin connector
2) 25-pin connector
SD
RD SG
SDA
SDB
RDA
RDB
SG
SA
SB
SG
CD
RD
SD
ER
SG
DR
RS
CS
1
2
3
4
5
6
7
8
SD
RD
SG
Personal computer
Your recorder
Within 15m
SD
RD
SG
Your recorder
Personal computer
(Ex.3)
SD
RD
RS
CS
DR
SG
CD
ER
2
3
4
5
6
7
8
20
RD
SD
SG
RD
SD
SG
SD
RD
RS
CS
DR
SG
CD
ER
2
3
4
5
6
7
8
20
SD
RD
RS
CS
DR
SG
CD
ER
2
3
4
5
6
7
8
20
Personal computer
(Ex.2)
Personal computer
(Ex.1)
Within 15m
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