R&S ZVH
Spectrum Analyzer Mode (R&S ZVH-K1)
Configuring Spectrum Measurements
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► Press the TRACE key.
► Press the "Trace Mode" softkey.
The R&S ZVH opens a submenu to select the trace mode.
► Select the trace mode you want to work with.
If you have selected the average trace mode ("Average: 10" menu item), the
R&S ZVH opens an input field to set the number of sweeps the R&S ZVH includes
in the averaging.
► Enter the number of sweeps to include in the averaging.
In continuous sweep mode, the R&S ZVH now calculates the moving average over
the number of sweeps you have specified. In single sweep mode, it stops the
measurement after finishing the sweeps and averages the traces.
4.2.5.2 Selecting the Detector
The number of measurement results collected in a single sweep usually is very high,
especially if the span is large. However, the display of the R&S ZVH can display only
631 results in horizontal direction, as it is limited by the number of pixels that are
available on the display. Therefore, it has to combine measurement results to fit them
on the display. In that case, one pixel represents a frequency range = span/631.
The detector determines the way the R&S ZVH combines and displays the results for
one pixel. The data base is the video voltage of the analyzer.
The R&S ZVH provides several types of detectors.
●
Auto Peak
If the auto peak detector is active, the R&S ZVH displays both the maximum and
the minimum power levels that were measured in the frequency range covered by
a pixel.
Therefore, the auto peak detector loses no information. If a signal power level
fluctuates (e.g. noise), the width of the trace depends on the magnitude of the
signal fluctuation.
The auto peak detector is the default detector.
●
Max Peak
If the max peak detector is active, the R&S ZVH displays only the maximum power
levels that were measured in the frequency range covered by a pixel.
The max peak detector is useful for measurements on pulse or FM signals, for
example.
●
Min Peak
If the max peak detector is active, the R&S ZVH displays only the minimum power
level that were measured in the frequency range covered by a pixel.
The min peak detector displays sine signals with the correct level and suppresses
noise. Therefore it is useful to find sine signals in the vicinity of noise.
