The Spectrum Application
FPC1000
68
User Manual 1178.4130.02 ─ 02
The changes however, still do not show signal differences in detail. The only thing
that happened is that the colors have shifted, in the example to purple, because
the color that corresponds to the reference level has shifted from red to purple. All
other colors that are part of the color scheme are still unused, because the spectro-
gram level range is still the same (100
dB).
5. Select the "Level Range" menu item.
The R&S
FPC1000 opens an input field to enter the spectrogram level range.
In the example, the level range of the signal is from about -80
dBm to about
-120
dBm.
6. Therefore, set the level range to 40
dB to cover the complete level range of the sig-
nal.
As the level range is now adjusted, the R&S
FPC1000 is able to map its complete
color range to the level range of the signal.
This means that signal parts with a low amplitude are in a shade of red while signal
parts with a high amplitude are purple.
Measurements and Result Displays
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