2-6
IM WT3001E-17EN
2.5 Connection via the RS-232 Interface
When you connect this instrument to a PC, you must set this instrument so that the
handshaking method, baud rate, data format, and other parameters match those on the
PC side.
For details on the settings, see the following pages. In addition, use an interface cable
that meets the specifications of this instrument.
Connector and Signal Names
2
1
3
4
5
6
7
8
9
2
RD (Received Data):
Received data from the PC.
Signal direction ..... input
3
SD (Send Data):
Transmitted data to the PC.
Signal direction ..... output
5
SG (Signal Ground):
Signal ground.
7
RS (Request to Send): Handshaking signal to receive data from the PC.
Signal direction ..... output
8
CS (Clear to Send):
Handshaking signal to send data to the PC.
Signal direction ..... input
* Pins 1, 4, 6, and 9 are not used.
9-Pin to 25-Pin Adapter and Signal Names
5
(7)
8
(5)
7
(4)
2
(3)
3
(2)
The numbers inside the parentheses are pin numbers for the 25-pin connector.
Signal Direction
The following figure shows the direction of the signals used by the RS-232 interface of
this instrument.
2
3
8
7
Computer
This
instrument
RS [Request to send]
SD [Send data]
RD [Receive data]
CS [Clear to send]