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SDS1000X-E&SDS1000X-U User Manual
130
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desired vertical FFT offset.
Press the Unit softkey to select the unit of vertical axis. The units of the
vertical axis can be dBVrms, dBm, Vrms or dBArms, Arms, which use a
logarithmic scale or a linear scale to display vertical amplitude
respectively.
Press the Ext Lode softkey and then turn the Universal Knob to select the
external load value.
6. Press the Horizontal softkey to enter HORIZONTAL menu.
Figure 76 HORIZONTAL Menu
Press the Center softkey, and then turn the Universal Knob to select the
desired center frequency.
Press the Hz/div softkey, and then turn the Universal Knob to select the
desired resolution frequency.
7. Press the Tools softkey to enter TOOLS menu(only 4-channel supports this
function). Press Type softkey to select the type of tools. The type of the tools
can be Peaks, Markers, or Off.
Peaks: Automatically mark the peak of the current FFT waveform according to
the search configuration.
Figure 77 FFT Peaks Menu
Press the Show Table softkey to display a table of peak, and press Show
Frequency softkey to display the frequency value of the peak. Press the
Sort By softkey continuously to set the table sorting by Amplitude or
Frequency.
Press the Search Config softkey to set search configuration.
Figure 78 SEARCH Menu
a. Press the Threshold softkey and turn the Universal knob to set the
minimum peak amplitude. Only peaks larger than the peak limit can
be judged as peaks.
b. Press the Excursion softkey and turn the Universal knob to set the
difference between the peak value and the minimum Amplitude on
both sides. Only when the difference is greater than the peak value of
peak offset can the peak value be determined.
Markers: Customize the marker locations on the FFT waveform based on search
configuration.
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