Controls and Indicators
Balance Control
Use the Balance control (thumb wheel) to make
minor adjustments to DC offsets present on the
probe output. To use the control:
1.
Disconnect the probe from the current
source.
2.
Lock the probe slider closed.
3.
Press the
Degauss
button.
4.
Set the oscilloscope vertical scale to
10 mA/div, or the most-sensitive setting on
the instrument.
5.
Open and close the probe slider.
6.
Adjust the
Balance
control to zero the
displayed signal.
NOTE.
If you cannot set the DC offset to zero with the thumb wheel, a coarse balance adjustment is accessible through the
opening below the thumb wheel (see small arrow, above). First, set the thumb wheel to the midway point, and then use an
insulated, straight-edge tool on the coarse balance adjustment to set the offset to zero.
20 A Current Probes Instruction Manual
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