HP 54645A, Руководство пользователя и сервисное руководство

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To Expand the Vertical Signal
When changing the Volts/Div for analog channels, you can have the signal
expand (or compress) about the signal offset or the ground point. This works
well with two signals displayed, because you can position and see them both
on the screen while you change the amplitude.
•
To expand the signal about the offset, press
Print/Utility
.
Then select System Config
and
Expand Vertical Center
.
When you increase the Volts/Div to expand the signal about center, the top of
the waveform stays at the same level, while the bottom of the waveform
adjusts to fill the Volts/Div setting.
•
To expand the signal about ground, press
Print/Utility
.
Then select
System Config
and
Expand Vertical Ground
.
When you increase the Volts/Div to expand the signal about ground, the
bottom of the waveform stays at the same level, while the top of the
waveform adjusts to fill the Volts/Div setting.
Oscilloscope Probes
The HP 54645A/D Oscilloscopes have automatic probe sensing. If you are
using the probes supplied with the oscilloscope, or other probes with probe
sensing, the probe attenuation factor will be automatically set up by the
oscilloscope when automatic probe sensing is turned on. The default setting
is to have automatic probe sensing turned on. This is indicated by the
selection
Auto n
under the
Probe
softkey, where
n
is 1, 10, or 100.
If you are not using automatic probe sensing, toggle the Probe softkey to
change the attenuation factor to match the probe you are using.
Front-Panel Overview
To adjust oscilloscope vertical scaling
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