R&S FSH
Spectrum Analyzer Mode
Configuring Spectrum Measurements
Operating Manual 1309.6275.12 - 14
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Select the "Gate Settings" menu item.
The R&S FSH opens a softkey submenu to control the gate settings. At the same time,
the R&S FSH switches into time domain, as indicated in the display.
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Press the "Manual SWP Time" softkey and set the sweep time in a way that the
portion of interest of the signal is visible on the screen.
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Press the "Gate Delay" softkey.
The R&S FSH opens an input field to define the trigger delay.
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Enter the delay time you need.
The measurement now starts after the delay time has passed.
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Press the "Gate Length" softkey.
The R&S FSH opens an input field to define the gate length.
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Enter the length of the gate.
The R&S FSH now measures over the period of the gate length. After the gate has
closed, the R&S FSH waits with the measurement until the next gate signal
happens.
The delay time and gate length are represented by vertical red lines in the diagram
area.
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After setting the gate delay and gate length, exit the gate settings menu with the
"Exit" softkey.
The R&S FSH returns to the frequency domain provided it was active before
setting up the gated trigger. The original span is restored. The R&S FSH is ready
to perform measurements with an accurately set gate.
2.2.5 Working with Traces
The trace menu contains all functions available to customize the trace display.
2.2.5.1 Selecting the Trace Mode
The R&S FSH provides several trace modes. The trace mode defines the way the
R&S FSH writes the trace.
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Clear/Write
In its default state, the R&S FSH overwrites the trace after each sweep.
You can apply all detectors in this mode.
C
Average
The trace is the result of the moving average over several sweeps.
The R&S FSH calculates the (moving) average of the power levels for each pixel
over a particular number of sweeps in the range from 2 to 999.
