3 Using the system
│
33
3.5.1.1 Frequency graph
The receiver displays the spectra of the noises in the frequency
graph.
Fig. 21: Frequency graph
1 Frequency axis, 2 Lower stopband, 3 Lower filter limit,
4 Graph of functions, 5 Passband,
6 Upper filter limit, 7 Upper stopband
In the settings you can specify whether to display one or two
functions (
Measurement
menu >
Filter basis
).
If two functions are displayed:
●
Areas in which the two functions overlap are shown in black.
●
If the values of one function are lower than the values of the
other function across the whole frequency range, you will only
be able to see the function with the higher values and the
overlap.
One filter is always set in the frequency graph. This filter can be
changed.
● The filter currently applied will be shown on the
Current filter
button.
● The values of the filter limits will be specified on the
Filter
limits
buttons.
Dashes will be shown instead of digits if an automatic filter cal
-
culates the entire frequency range as the passband.
