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IM 701931-01E
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Description of Parts
1 Clamp
The part which clamps to the conductor to be measured.
2 Clamp Lever
The lever for opening and closing the clamp. Make sure to open or close the
clamp only by using the clamp lever.
3 Clamp Lock
Locks the clamp in place when it is closed.
4 Sensor Head
This clamps the conductor being measured, and carries out the actual current
measurement. It is a precision assembly including a molded component,
a ferrite core, and a Hall effect element. It may be damaged if subjected to
sudden changes in ambient temperature, or mechanical strain or shock, and
therefore great care should be exercised in handling it.
5 Demagnetizing Switch (DEMAG)
If the core has been magnetized by switching the power ON and OFF,
or by an excessive input, this switch demagnetizes it. Always carry out
demagnetizing before measurement. The demagnetizing process takes about
three seconds. During demagnetizing, a demagnetizing waveform is output.
6 Zero Adjustment Dial (ZERO ADJ)
Use the zero adjustment dial to correct for the effect of a voltage offset or
temperature drift on the unit. When performing measurements, always carry
out a zero adjustment after demagnetizing.
7 Output Connector
The current waveform of the measured conductor is output at a constant rate
(0.01 VA in conjunction with the waveform measuring instrument with an input
impedance of 1 MΩ.)
Connect to the BNC input connector of the waveform measuring instrument.
Note
• The output of this unit is terminated internally. Use a high-impedance input to the
measuring instrument. With an input impedance of 50 Ω, accurate measurement
is not possible.
• If using BNC-banana plug or similar adapters to connect to input terminals other
than BNC connectors, make sure the polarity is correct.
• Turn the clamp lever until it clicks, and check that it is locked securely.
8 Power Plug
Connect the power plug to the receptacle on the Power Supply (Model
701934) to supply power to the sensor and terminator.
701931 Current Probe
