1-6
IM 701930-01E
4.
Without clamping the conductor to be measured, press the clamp
lever until the
LOCK
indication appears (and the
UNLOCK
indication
disappears), and then check that the clamp is properly closed.
5.
Press the demagnetizing switch (DEMAG) on the terminator.
6.
Turn the zero adjustment dial on the terminator to adjust the trace to the
zero position.
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.
• Oscillation may occur when you execute DEMAG, but this has no effect on
measurements.
• The positive side of the waveform that is generated when you execute
DEMAG may not be symmetrical to the negative side, but this has no effect on
measurements.
Measurement Procedure
CAUTION
• The maximum continuous input range is based on heat that is internally
generated during measurement. Never input current in excess of this
level. Doing so may result in damage to the probe.
• The maximum continuous input range varies according to the frequency
of the current being measured. See page1-9, “Product Specifications.”
• If excess current is input, generated heat activates a built-in safety
function that blocks normal output. If this happens, remove the input
immediately (remove the sensor from the conductor being measured, or
reduce the input current to zero). Wait until the sensor has had sufficient
time to cool before resuming operation.
• Heat generated by an input current whose frequency is 1 kHz or higher
is mainly due to self-heating of the sensor head. In this case, the
protection function is not activated. Therefore, be careful of burns, short
circuits, and other accidents or sensor damage and the like caused by
the temperature increase.
• If you continuously input a current even if it is below the maximum
current value established by the maximum continuous input range,
the self-heating of the sensor may cause the safety function of the
instrument to activate in order to prevent damage to the instrument.
• At high ambient temperatures, the built-in safety circuit may activate at
current input levels below the rated continuous maximum.
• Continuous input of current exceeding the rated maximum, or repeated
activation of the safety function may result in damage to the unit.
