Display Wavefor
morTraceData
5. Average: Avera
ges all points in each
interval.
6. –P eak: Uses the lowest amplitude point
in each interval.
Spectrogra
mDisplay
The spectrogram display is particularly useful for monitoring slowly-changing RF phenomena. The x-axis represents
frequency, just like the typical spectrum display. The y-axis represents time. Color indicates amplitude.
Spectrogram slices are generated by taking each spectrum and flipping it on its edge so that it is one pixel row tall, and then
assigning colors to each pixel based on the amplitude at that frequency with the cold colors of blue and green representing
low amplitude, and the hotter colors of yellow and red indicating higher amplitude. Each new acquisition adds another slice at
the bottom of the spectrogram, and the history moves up one row.
When acquisitions are stopped, you can navigate through the history of the spectrogram by pressing the side menu slice
control and turning the Multipur pose a knob. When acquisitions are stopped and the spectrogram is displayed, the
spectrogram slice trace is displayed a s the Normal spectrum trace.
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 Run / Stop to
stop acquiring RF acquisitions. Turn
Multipurpose a.
Slice
(Normal)
(a) -45
120 MDO3000 Series Oscilloscopes User Manual
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