Agilent Technologies 54751A, Руководство пользователя

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FINAL TRIM SIZE : 7.5 in x 9.0 in
Calibration Overview
User Calibrations
Channel Skew Calibration
The skew calibration changes the horizontal position of a waveform on the
display . The skew calibration has a range of approximately 100 s . Y ou can
use skew to compensate for the dierences in cable or probe lengths . It also
allows you to place the trigger 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 dierence . If you are interested in comparing the shapes of two
waveforms rather than the actual timing dierence , you can use skew to
overlay one waveform on top of the other waveform.
T o skew two channels 1. Turn both channels on and overlay the signals vertically .
2. Expand the time base so that the rising edges are at about a 45 angle .
3. Press the plug-in module's front-panel channel 4 SETUP 5 key .
4.
Press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Calibrate and then
NNNNNNNNNNNNNN
Skew .
5. A djust the skew on one of the channels so that the rising edges overlap at
the 50% points .
Probe Calibration
F or active probes such as the Agilent 54701A, which the instrument can
identify through the probe power connector , the instrument automatically
adjusts the channel vertical scale factors to the probe's nominal attenuation,
even if a probe calibration is not performed.
F or passive probes or non-identied probes , the instrument adjusts the
vertical scale factors only if a probe calibration is performed. Probe
calibration allows the instrument to establish the gain and oset of specic
probes that are connected to a channel of the instrument, and then apply
those factors to the calibration of that channel.
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