Calibrate - HP 54710A User's Reference Manual

Channel Menu

Calibrate

Calibrate
The calibrate menu allows you to null out any skew between probes or
cables, calibrate for best accuracy, and check the present calibration status of
the oscilloscope.
Skew
Skew changes the horizontal position of a waveform on the display. You can
use skew to compensate for differences in cable or probe lengths. It also
allows you to place the triggered edge at the center of the display when you
are using a power splitter connected between the channel and trigger inputs.
Another use for skew is when you are comparing two waveforms that have a
timing difference between them. If you are more interested in comparing the
shapes of two waveforms rather than the actual timing difference between
them, you can use Skew to overlay one waveform on top of the other
waveform..
To skew two channels
1 Turn both channels on and overlay the signals vertically.
2 Expand the time base so that the rising edges are about a 45 degree angle.
3 Adjust the skew on one of channels so that the rising edges overlap at the
50 percent points
If one of the channels you are skewing is a trigger source, skew the other
channel to it.
If you are skewing probes, connect the probes to the calibrator output on the
mainframe using a BNC Tee and probe-tip-to-BNC adapters (HP 10218A). Then,
set the calibrator output to 500 kHz.
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