Analyze Wavefor
morTraceData
When the oscill
oscope is not acquiring data
(stopped), the RF acquisition time is fixed
on the display. Turning the pan control
clockwise or c
ounter-clockwise will not move
the RF acquisition time. Turning the pan
control will, however, move the spectrum
time within t
he RF acquisition time.
Zooming in on Spectrum Time and Analog Time
1. Rotate the zoom (inner) knob of the
pan-zoom control or push the front-panel
zoom button to turn on the zoom control
2. Rotate the zoom control to enlarge or
shrink the displayed time domain data.
You can use the zoom controls to look more closely into analog time and the time correlated multi-domain display.
With zoom on, the oscilloscope centers spectrum time in th e center of the zoomed view of the time domain window. The
orange spectrum time bar stays anchored to the middle of the zoom view of the time domain window.
Special
Case: When Spectrum Time is Outside the RF Acquisition Time
When in zoom mode, if you rotate the pan knob until the zoom box moves outside of the RF acquisition time, the spectrum
time bar turns gray, and the spectrum trace in the frequency domain d isplay disappears. If you then rotate the pan control
until the zoom box moves back into the RF acquisition time, the spectrum time bar returns to orange.
MDO4000 Series Oscilloscopes User Manual 153
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