R&S FS300, Руководство по эксплуатации

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Spectrum Analyzer R&S FS300
E-1007.9900.15 6-134 Operating manual, 02/2006
6.2.5.2 Displaying the Active Trace
Use
You can select the following settings for displaying the active trace:
CLEAR/WRITE
Overwrites the trace on every frequency sweep.
HOLD
Displays the minimum/maximum over several sweeps.
This function is used to find the minimum/maximum value of a signal
over several frequency sweeps ( CONT. SWEEP, 6-128). This is par-
ticularly useful in the case of modulated or pulse-like signals. On every
sweep, more data is added to the signal spectrum until all the signal
components are displayed using a type of “envelope curve”.
AVERAGE
Displays the average over several frequency sweeps.
This function is used to display the signal average over several fre-
quency sweeps. This function is most useful for sine signals which have
been degraded by noise. Essentially, noise can be eliminated by averag-
ing the samples over several frequency sweeps.
After a measurement has been performed, the trace can be frozen (
VIEW
) or
blanked out (
BLANK
).
Displaying
current
measured values
When the R&S FS300 is switched on, Trace 1 is active and is displayed in
the CLEAR/WRITE display mode.
•
Press the
function key
in the
menu.
The overwrite mode is set. This means that the trace is overwritten on
every frequency sweep.