Display Waveform or Trace Data
To use the spectrogram feature, push
Spectrogram
from the RF Menu to bring up the related side menu.
Spectro-
gram
1.
Push
Display
to
On
to start the spectrogram.
Display
On
| Off
2.
To review each spectrum captured in the
spectrogram, push the
Run / Stop
button
to stop acquiring RF acquisitions. Rotate
multipurpose knob
a
.
Slice
(Normal)
(a) -45
Spectrogram Triggered and Free Run
When the MDO4000 displays just the frequency domain (and not the time domain), you can choose whether the spectrum
should be triggered using the trigger de
fi
ned in the Trigger menu, or should be in a free run mode. When you select the free
run mode, the MDO4000 acquires spectrums as fast as possible.
To use the spectrogram triggered and free run feature, push
Spectrom
from the RF Menu to toggle between
Triggered
and
Free Run
. Remember that this only works when the MDO4000 displays just the frequency domain (and not the time domain).
1.
When the oscilloscope displays both
the time and frequency domains, the
spectrum shown is always triggered.
2.
When only the frequency domain is
displayed, you can select either trigger
or free run mode. In free run mode, the
oscilloscope acquires spectrums as fast
as possible.
To display only the frequency domain,
turn off all time domain waveforms,
including channels 2 - 4, digital channels
0 - 15, buses, time domain math
waveforms, time domain reference
waveforms, and any RF versus time
traces.
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