Rohde & Schwarz FPC1000 User Manual page 85

FPC1000
4. Select the "Save" softkey to store the spectrogram.
Now that you have saved the spectrogram, you can replay it any time you want.
The number of spectrograms that you can store on the R&S FPC1000 internal
memory depends on the other datasets that are currently on the R&S FPC1000.
Playback of a spectrogram
If you have recorded a spectrogram and have saved it in internal memory or a memory
stick, you can view the results of that measurement later.
1. Press the "Meas" key to open the measurement menu.
2. Select the "Measurement Mode" menu item.
3. Select the "Spectrogram Playback" menu item.
The R&S FPC1000 enters the spectrogram playback mode. In playback mode, it
no longer records any data. Only the data that has been recorded already is dis-
played.
Restoring a spectrogram
You can restore a spectrogram that you recorded some other time and saved in the
internal memory of the R&S FPC1000 or on a memory stick.
1. Press the "Meas" key to open the measurement menu.
2. Select the "Recall" menu item.
The R&S FPC1000 opens the file manager.
3. Select the file you need. The file extension for spectrogram data is *.spm.
The R&S FPC1000 loads the spectrogram and shows the data in the display.
Basically, you can do the same things in spectrogram playback mode as in the
spectrogram recording mode, for example 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 have been recorded.
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 you enter the playback mode, the R&S FPC1000 displays two time lines in the
spectrogram.
Both time lines (T1 and T2) correspond to an absolute time value, whose position
refers to the most recent time frame (top of the diagram). 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 FPC1000.
1. Press the "Meas" key to open the measurement menu.
User Manual 1178.4130.02 ─ 02
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The Spectrum Application
Measurements and Result Displays
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