Caltest CT4192, Руководство пользователя

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450866-001 Rev. B caltestelectronics.com 9
Offset Zero Procedure
The CT4192 can be adjusted to zero the probe’s offset voltage
using the offset adjustment tool supplied with the probe. Follow this
procedure to perform the offset adjustment.
1. Connect the probe to Channel 1 of the oscilloscope. Turn on the
probe power. You may use the CT3723 or batteries to power the
probe. Set the probe attenuation ratio to the low setting.
2. Short the + and - probe inputs together with the hook tips.
3. Turn on power to the oscilloscope. Leave both the instrument
and the probe turned on for 30 minutes to stabilize.
4. Press [Default Setup] and [Auto] on the oscilloscope.
5. Press the Channel 1 button, then press the probe softkey and
set the attenuation to match that of the probe.
6. Set the oscilloscope to DC coupled mode and then the trace on
the scope to 0 volts.
7. If possible, set the oscilloscope to average mode (x16) or high-
resolution mode to reduce oscilloscope noise.
8. Using the offset adjustment tool (included), adjust the probe
offset voltage to 0 volts.
4 Cleaning
This probe does not require any particular cleaning. If necessary, clean
the case with a soft cloth.
WARNING
Dry the probe thoroughly before attempting to make voltage
measurements.
CAUTION
Avoid immersing or using abrasive cleaners or solvents containing
Benzene (or similar solvents) on the probe as these can cause
deterioration of the probe body and cables.