56
Inspecting the Instrument Before Use
3
Measure samples (such as battery, commercial power
supply, and resistor) of which values have already been
known, and check that the appropriate values appear.
Check method Action
Example:
Perform the AC voltage measurement
to measure the commercial power
supply, and then check the display.
Black Red
Normal:
An already-known value appears.
(In this example, the commercial
voltage level should appear.)
Abnormal:
The measured value does not
appear.
Corrective action:
A malfunction may have occurred.
Stop the inspection and then
request repair.
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