R&S FSH
Spectrum Analyzer Mode
Configuring Spectrum Measurements
Operating Manual 1309.6275.12 - 14
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M
Press the SWEEP key.
In the default state, "Auto SWP Time" is active.
M
Press the "Manual SWP Time" softkey.
The R&S FSH opens an input field to set the sweep time.
M
Enter the sweep time you need.
If the video bandwidth is no longer coupled to the span or the resolution bandwidth,
the R&S FSH puts a red dot at the "SWT" hardware setting (
).
2.2.4.2 Selecting the Sweep Mode
The sweep mode is the way the R&S FSH performs the measurement.
In its default state, the R&S FSH measures continuously. In this mode, the R&S FSH
automatically repeats the sweep in the defined range of the horizontal axis (frequency
or time) and updates the trace accordingly after it has finished with one sweep.
In some cases it may be sufficient to get the results over a single sweep only, e.g. if a
particular trigger condition is met. In single sweep mode, the R&S FSH performs the
sweep a certain number of times (depending on the number of averages you have set)
over the defined range of the horizontal axis (frequency or time) and then stops
measuring. It performs another sweep only after you tell it to. For more information on
setting the number of sweeps included in a single sweep see "
Mode (Average)
".
M
Press the SWEEP key.
M
Press the "Single Sweep" softkey.
The R&S FSH activates single sweep mode.
M
Press the "Cont Sweep" softkey.
The R&S FSH again starts to measure continuously.
2.2.4.3 Working with Trigger Functionality
If you have to perform measurements according to certain signal conditions, you can
use a trigger. A trigger responds to certain events. If a trigger is active, the R&S FSH
starts to measure if the trigger conditions are met. The trigger can be generated either
externally or internally.
The R&S FSH provides the following trigger functions.
C
Free Run
A new sweep starts on completion of the previous sweep. This is the default state
of the R&S FSH.
C
Video Trigger
A sweep starts when the video voltage exceeds a particular level. The video trigger
is available only in the time domain (span = 0).
