Connecting The Serial Interface Cable - YOKOGAWA wt1600 User Manual

2.3

Connecting the Serial Interface Cable

Connector and Signal Names
9-25 Pin Connector
Signal Direction
IM 760101-11E
When connecting this instrument to a computer, make sure that the handshaking
method, data transmission rate and data format selected for the instrument match those
selected for the computer.
For details, refer to the following pages. Also make sure that the correct interface cable
is used.
5
9
4
8
3
7
2
6
1
2. RD (Received Data) : Data received from personal computer
Signal direction...Input
3. SD (Send Data) : Data transmitted to a personal computer
Signal direction...Output
5. SG (Signal Ground) : Ground for signals
7. RS (Request to Send) : Signal used for handshaking when receiving data from a
personal computer
Signal direction...Output
8. CS (Clear to Send) : Signal used for handshaking when transmitting data to a
personal computer
Signal direction...Input
Pin Nos. 1, 4, 6 and 9 are not used.
3 2 7 8 5
(2) (3)(4) (5) (7)
The number between brackets refer to the pin Nos. of the 25-pin connector.
The figure below shows the direction of the signals used by the Serial interface.
Computer
RS [Request to send]
CS [Clear to send]
SD [Send data]
RD [Receive data]
2
7
This
8
instrument
3
2
2-3