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3.4
Manual Probe Compensation
Upon the first connection of a probe and an input channel, you should manually perform this adjustment to match the
probe to the input channel. Uncompensated or miscompensated probes may lead to errors or faults in measurement.
To adjust the probe compensation, follow the steps below.
1.
Set the Probe option attenuation in the channel menu to 10X. Set the switch on the probe to 10X and connect
the probe to Channel 1 on the oscilloscope. If you use the probe hook-tip, ensure it is firmly inserted onto the
probe. Attach the probe tip to the PROBE COMP ~5V@1KHz connector and the reference lead to the PROBE
COMP Ground connector. Display the channel and then press the AUTOSET button.
2.
Check the shape of the displayed waveform.
3.
If necessary, use a nonmetallic screwdriver to adjust the variable capacity of your probe until the shape of the
waveform turns to be the same as the above figure. Repeat this step as necessary. See the figure below for the
way of adjustment.
3.5
Probe Attenuation Setting
Probes are of various attenuation factors which affect the vertical scale of the signal. The Probe Check function is
used to verify if the Probe attenuation option matches the attenuation of the probe.
As an alternative method to Probe Check, you can push a vertical menu button (such as the CH 1 MENU button) and
select the Probe option that matches the attenuation factor of your probe.
Make sure that the Attenuation switch on the probe matches the Probe option in the oscilloscope. Switch settings are
1X and 10X.
When the Attenuation switch is set to 1X, the probe limits the bandwidth of the oscilloscope to 6MHz. To use the full
bandwidth of the oscilloscope, be sure to set the switch to 10X.
