Connecting The Interface Cable - YOKOGAWA WT200 User Manual

11.2 Connecting the Interface Cable

Connector and Signal Names
Signal Direction
IM 253421-01E
When connecting this instrument to a personal computer, make sure that the
handshaking method, data transmission rate and data format selected for the instrument
match those selected fro the computer. For details, see the following pages. Also make
sure that the correct interface cable is used.
Numbers in the figure represent the Pin Nos.
Pins 14 through
19 are not used
1 2 3 4 5
6
RS-232-C Connector : DBSP-JB25S or equivalent
1 AA(GND: Protective Ground)
2 BA(TXD: Transmitted Data)
3 BB(RXD: Received Data)
4 CA(RTS: Request to Send)
5 CB(CTS: Clear to Send)
6 CC(DSR: Data Set Ready)
7 AB(GND: Signal Ground)
20 CD(DTR: Data Terminal Ready)
Note
Pins 8 to 19 and 21 to 25 are not used.
The figure below shows the direction of the signals used by the RS-232-C interface.
CC(DSR)
CD(DTR)
CA(RTS)
Computer
CB(CTS)
BA(TXD)
BB(RXD)
Pins 21 through
20 25 are not used
Pins 8 through
7
13 are not used
Grounded to the case of this instrument
Data transmitted to personal computer
Signal direction: output
Data received from personal computer
Signal direction: input
Signal used to handshake when receiving data from
personal computer
Signal direction: output
Signal used to handshake when transmitting data to
personal computer
Signal direction: input
Signal used to handshake when transmitting data to
personal computer
Signal direction: input
Ground for signals
Signal used to handshake when receiving data from
personal computer
Signal direction: output
[ data terminal ready]
[
request to send]
[
clear to send ready]
[ transmitted data]
[
received data]
11
6
20
4
WT200
5
2
3
11-3