8
IM 701928-01E
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 adjust to the zero
point.
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 zero adjust
trimmer.
The amplitudes across all
frequencies are small.
Input of the digital
oscilloscope is 50 Ω
Set for 1 MΩ.
