R&S FSH Spectrum Analyzer Mode
Configuring Spectrum Measurements
Operating Manual 1173.6275.12 - 30 109
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.
► 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.
► Press the "Gate Delay" softkey.
The R&S FSH opens an input field to define the trigger delay.
► Enter the delay time you need.
The measurement now starts after the delay time has passed.
► Press the "Gate Length" softkey.
The R&S FSH opens an input field to define the gate length.
► 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.
► 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.
3.2.4.4 Selecting the Sweep Type
The sweep type defines the way how the R&S FSH captures and processes the
data.
► Press the SETUP key.
► Press the "User Preferences" softkey.
► Select the "Sweep / FFT" menu item.
The R&S FSH opens a dropdown menu to select the sweep type.
Which sweep type is appropriate for the current measurement depends on the
span, RBW, VBW and sweep time settings.
- Auto
The R&S FSH automatically selects the fastest sweep type for the current
measurement configuration.
- Always Sweep
The R&S FSH uses the local oscillator to provide the spectrum quasi analog
from the start to the stop frequency.
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