R&S FSH
Spectrum Analyzer Mode
Performing Spectrum Measurements
Operating Manual 1309.6275.12 - 14
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2.1.8.5 Playback of a Spectrogram
If you have recorded a spectrogram and have saved it in internal memory, a memory
stick or the SD card, you can view the results of that measurement at a later time.
M
Press the "Playback" softkey
or
M
Press the "Meas Mode" softkey.
M
Select the "Spectrogram Playback" menu item.
Recalling a previously stored spectrogram
M
Press the "Recall Spectrogram" softkey.
The R&S FSH opens a dialog box to select a file that contains the spectrogram
data. The file extension for spectrogram data is *.spm.
M
Select the file you need.
M
Confirm the selection with the "Select" softkey.
The R&S FSH loads the spectrogram and shows the data in the display.
In general you can do the same things on a recalled spectrogram as in the
spectrogram recording mode, e.g. customize the display to your needs.
In addition to that functionality, it is possible to view not only the spectrum that belongs
to the currently selected spectrogram frame, but also the spectrums of all frames that
are in the memory of the R&S FSH.
Working with time lines in playback mode
To find a particular point in time and display the corresponding spectrum you can use
two time lines:
When entering the playback mode the R&S FSH displays two time lines in the
spectrogram.
The first time line (T1) corresponds to
an absolute time value, the second
(T2) is a time relative to the first time
line. Both time lines are positioned on
the most recent spectrogram line at
the top of the result display.
You can now select a specific spectrogram frame that is in the memory of the
R&S FSH.
M
Press the "Select Time Line" softkey.
The R&S FSH opens an input field to define the position of the first time line (T1).
