19
IM 701933-01E
Malfunction? First, Investigate.
If you are unable to correct problems using the troubleshooting information in
this section, servicing is required and you should contact the dealer from whom
you purchased the instrument.
Description
Possible Problem
Corrective Action
Cannot measure direct current
(or low frequencies of up to
several hundred Hz), or the
amplitude at that bandwidth is
small.
Power is not ON.
Turn ON the power.
The oscilloscope or other
measuring instrument is set
for AC coupling.
Set the instrument to DC
coupling.
The sensor is not locked
(the closing mechanism is not
properly aligned).
Lock the sensor.
Cannot zero the probe with the
zero adjust dial.
The sensor is magnetized.
Demagnetize the sensor, and
try the adjustment again.
The zero adjust is out of range
(due to drift or other causes).
Use the probe’s coarse
adjustment trimmer.
The amplitudes across all
frequencies are small.
Input to the oscilloscope or
other measuring instrument
is 50 Ω.
Set for 1 MΩ or higher.