Display Waveform or Trace Data
Quick Tips
Preview.
If you change the Position or Scale controls when the acquisition is stopped or when it is waiting for the next
trigger, the oscilloscope rescales and repositions the relevant waveforms in response to the new control settings. It
simulates what you will see when you next push the
RUN
button. The oscilloscope uses the new settings for the next
acquisition.
You may see a clipped waveform if the original acquisition went off the screen.
The math waveform, cursors, and automatic measurements remain active and valid when using preview.
Setting Input Parameters
Use the vertical controls to select waveforms, adjust the waveform vertical position and scale, and set input parameters.
1.
Push a channel menu button
1
,
2
,
3
, or
4
to
bring up the vertical menu for the designated
waveform. The vertical menu only affects
the selected waveform.
Pushing a channel button will also select or
cancel that waveform selection.
2.
Push
Coupling
repeatedly to select the
coupling to use.
Use DC coupling to pass both AC and DC
components.
Coupling
DC
| AC
Termina-
tion
1M
Ω
| 50
Ω
Invert
On |
Off
Bandwidth
Full
(1) Label
More
Use AC coupling to block the DC component
and show only the AC signal.
3.
Push
Termination
repeatedly to select the
input impedance to use.
Set the input impedance (termination) to
50
Ω
or 1 M
Ω
if using DC coupling. Input
impedance is automatically set to 1 M
Ω
when using AC coupling.
For more information on input impedance,
see
Quick Tips
. (See page 105,
4.
Push
Invert
to invert the signal.
Select
Off
for normal operation and
On
to invert the polarity of the signal in the
preampli
fi
er.
102
MDO4000 Series Oscilloscopes User Manual
Summary of Contents for MDO4054-3
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