Hioki 3196 - RS-232 C Connection

7.3 Using the Instrument with a Computer
122
Quick Start Manual
7.3.1 RS-232C Connection
• To avoid electric shock, always remove the power cord
from the instrument and disconnect any test leads before
connecting the RS-232C cable to the instrument.
• The instrument and modem should be turned off before
connecting them.
• Do not connect or disconnect the cable with power on.
Otherwise, the devices could be damaged.
• Always tighten the screws when connecting the RS-232C cable.
• The instrument end of the connector should be a molded type
plug. The metal type (with protrusions on the connector prevent-
ing the surface from being flat) will not fit due to the instrument’s
design.
1. Turn the instrument
and modem off.
2. Connect the RS-232C
connectors on the
instrument and modem
together with a
straight-through cable.
The RS-232C cable must have straight-through
connections. Use a straight-through cable with a
connector that mates with the modem connector.
If the modem connector is a 9-pin D-sub type, the
9444 CONNECTION CABLE (option) can be used.
RS-232C cable
(Straight-through
cable)
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
6 7 8 9
9444 CONNECTION CABLE
male side pinout (9-pin)
1 2 3 4 5
6 7 8 9
Connector pin
assignments on
the 3196
(9-pin)
Pin Functions
CCITT EIA JIS
Signal Name
Circuit No. Code Addr. Code Addr.
2 Receive Data
104 BB RD RxD
3 Send Data
103 BA SD TxD
5 Signal Ground
102 AB SG GND
7 Request to Send
105 CA RS RTS
8 Clear to Send
106 CB CS CTS
Connecting a Modem to the Instrument
1 2 3 4 5