Omega RD2800 Communications terminals, RS-232C Connections, RS-232C Terminals RS-422A Terminals

4.CONNECTIONS

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

SD RD SG SDA SDB RDA RDB SG SA SB SG

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

Personal computer Your recorder

CD 1

RD 2

SD 3

ER 4

SG 5

DR 6

RS 7

CS 8

Within 15 m

SD RD

SG

2) 25-pin connector

Personal computer	Personal computer	Personal computer	Your recorder
(Ex. 3)	(Ex. 2)	(Ex. 3)

SD 2	RD	SD 2	RD	SD 2
RD 3	SD	RD 3	SD	RD 3
RS 4		RS 4		RS 4
CS 5		CS 5		CS 5
DR 6		DR 6		DR 6
SG 7	SG	SG 7	SG	SG 7
CD 8		CD 8		CD 8
ER 20		ER 20		ER 20

SD RD

SG

Within 15 m

－１９－