User Manual

2.2 Connecting the Cables
20
2.2.4 Connecting to a Strain Unit (Models 8939
and 8960)
Input module
Model 8939 Strain Unit
(conversion cable supplied)
Maximum Input Voltage (⇒ p. 4)
Connect the strain gauge converter* to the input module
jack.
(Depending on the sensor, the supplied conversion cable
may be needed.)
A bridge box* is required for measurement using a strain
gauge.*
∗ The strain gauge converter, strain gauge and bridge box may be
common types available in the market.
When using a conversion cable
• Do not connect a sensor other than the Model 8939 Strain Unit to the supplied
conversion cable.
• When removing the conversion cable, be sure to release the lock before pull-
ing the plug out.
Connect to the measurement object
Connecting the Conversion Cable
1 Connect the supplied conversion cable to
a receptacle on the input module.
Align the tooth on the inside of the receptacle
with the slot in the conversion cable plug, and
insert the plug. Insert it all the way to the end of
the slot in the plug ring (shaded part in the illus-
tration at the left). When inserted, twist the ring
clockwise to lock.
2 Connect the strain gauge transducer to
the conversion cable.
3 Attach to the measurement object.
To remove the conversion cable
Push and twist the plug ring counterclock-
wise to unlock it, then pull the plug out.
Example: Connecting the strain gauge converter with the supplied conversion cable
Required item:
Conversion Cable (supplied), Strain Gauge Converter
Connection Procedure: Vibration and displacement measurement
Connect to the Strain Gauge Converter
Bridge voltage
8939:
2 V is supplied.
8960:
Selectable
(2 V/ 5 V/ 10 V)
Input voltage
+
-
+
Connector Pinout
Tooth inside
receptacle
-
Lock
Connector
guide pin
Plug ring
Slot
3
2
1
The grounds of the instrument and the Con-
nector Shell of the 8960 are not isolated.