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Performing the Zero Adjustment
3.5 Performing the Zero Adjustment
Remove the residual components due to offset and the measurement environment.
Be sure to perform the zero adjustment before the impedance measurement and the voltage
measurement.
Performing the zero adjustment
Placing the measurement probe (Example: L2002)
1
Place the measurement probe in the same condition as the measurement is performed.
The zero residual volume differs due to the condition of the measurement probe (length, shape, and location).
Thus, place the measurement probe in the same condition as the actual measurement is performed, before
performing the zero adjustment.
2
Prepare the zero adjustment board (accessory).
3
Place the probes with a space the same length as the width of the actual measuring object.
Clip a pattern on the zero adjustment board, with the same number of divisions for both HIGH and LOW.
Measuring object
Zero adjustment board
L2002
Clip Type Probe
Divisions
Setting the zero adjustment
There are two methods of the zero adjustment, the spot zero adjustment (SPOT) and the all zero
adjustment (ALL).
Spot zero adjustment
(SPOT)
The zero adjustments for the range and the frequency that are presently set, and
the voltage measurement are performed. The time required differs according to
the frequency. The lower the frequency, the longer it takes to set (Reference:
approx. 350 s for 0.1 Hz, approx. 45 s for 1 Hz).
When setting at a different range and/or frequency, zero adjustment will be
invalid.
All zero adjustment
(ALL)
The zero adjustments for the range that is presently set, and the full range
of the frequency, and the voltage measurement are performed. Even if the
measurement frequency is changed, the zero adjustment is effective. However,
when the range is changed, the zero adjustment is not effective.
• When the zero adjustment is effective, the indicator of 0 ADJ appears on the measurement
screen.
• After performing the zero adjustment, even if the zero adjustment becomes ineffective, the zero
adjustment will become effective when returning to the conditions that the zero adjustment was
performed.
• With the 0ADJ_SPOT of the EXT.I/O and 0ADJ_ALL terminals, performing can be done.
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