Connecting The Interface Cable - YOKOGAWA WT110 User Manual

12.2 Connecting the Interface Cable

Connector and Signal Names
Signal Direction
12-2
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, refer to 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
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) Signal used to handshake when receiving data from
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.
Computer
Pins 21 through
20 25 are not used
Pins 8 through
6
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
personal computer
Signal direction: output
CC(DSR)
CD(DTR)
[ data terminal ready]
CA(RTS)
[ request to send]
CB(CTS)
[ clear to send ready]
BA(TXD)
[ transmitted data]
BB(RXD)
[ received data]
6
20
4
This
instrument
5
2
3
IM 253401-01E