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5.3 Troubleshooting
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The measured value fluctuates.
Check that the measured circuit is stable.
During voltage measurements, check that the test leads
are fully connected.
Check the waveform. Some special frequencies can't be
measured, such as those of inverters.
The displayed value is out of range O.L.
Resistance measurement or continuity check
If
O.L.
is displayed when the test leads are shorted
together, a test lead may be broken or internal circuitry
may be damaged.
Check for broken test leads by taking a voltage
measurement. If a test lead is broken, replace with
Model L9207-10 Test Lead.
Current measurment
o If nothing can be measured (no input detected) the
sensor element or internal circuitry may be damaged,
requiring repair service. If the damage is to internal
circuitry, the displayed value may appear over range
O.L.
during voltage measurement.
Voltage measurement
If over range is indicated when nothing is being
measured, internal circuitry may be damaged.
Summary of Contents for 3285-20
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