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101
Preparing to Use an Interface (Connection and Settings)
(3) Connect the RS-232C cable.
Before connecting the RS-232C cable, read “Before connecting the communication cables” (p. 10)
and “Before connecting to the RS-232C or GP-IB connectors” (p. 11) carefully.
Connect the RS-232C cable to the RS-232C connector. When connecting the cable, be sure to
tighten the fastening screws.
RS-232C cable
Computer’s
RS-232C interface
1 2 3 4 5
6 7 8 9
D-sub 9-pin male with
fastening screw #4-40
•When connecting the instrument to an external
device (DTE), use a crossover cable that satisfies
the specifications of the instrument’s connector
as well as the external device’s connector.
•The I/O connector implements terminal (DTE)
specifications.
•The instrument uses pin numbers 2, 3, and 5.
Other pins are unused.
Pin no.
Signal name
Signal
Remarks
Common
name
EIA
JIS
1
DCD
CF
CD
Data carrier detect
Not connected
2
RxD
BB
RD
Receive data
3
TxD
BA
SD
Transmit data
4
DTR
CD
ER
Data terminal ready
Fixed ON level (+5 to +9 V)
5
GND
AB
SG
Signal ground
6
DSR
CC
DR
Data set ready
Not connected
7
RTS
CA
RS
Send request
Fixed ON level (+5 to +9 V)
8
CTS
CB
CS
Clear to send
Not connected
9
RI
CE
CI
Ring indicator
Not connected
When connecting the instrument to a computer
Use a D-sub 9-pin male to D-sub 9-pin male crossover cable.
D-sub 9-pin male
Instrument
D-sub 9-pin male
Computer (AT-compatible)
Pin no.
Pin no.
DCD
1
1
DCD
RxD
2
2
RxD
TxD
3
3
TxD
DTR
4
4
DTR
GND
5
5
GND
DSR
6
6
DSR
RTS
7
7
RTS
CTS
8
8
CTS
9
9
Recommended cable: Hioki 9637 RS-232C Cable (1.8 m)
8
Preparing
to Use USB, RS-232C,
GP-IB,
and LAN
Control
www.
.com
1.800.561.8187
Содержание DM7275 Series
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