The Spectrum Application
FPC1000
110
User Manual 1178.4130.02 ─ 02
Performing limit checks
If limit lines are active, the R&S
FPC1000 automatically checks the trace for limit viola-
tions after each frequency sweep. As long as the signal does not violate the limit line,
the R&S
FPC1000 shows a "Pass" message in the measurement diagram. As soon as
one single value (= one pixel) is outside of the limits, the R&S
FPC1000 displays a
"Fail" message in the diagram area.
A limit check relates only to the frequency range defined by the limit line, not the span.
Limit violation
Note that a limit check fails only if the signal exceeds the limit line.
If the signal level is the same as the limit value, the limit check passes.
You can also turn on an audio signal that sounds an alarm if a limit check fails.
1. Press the "Lines" key top open the lines menu.
2. Select the "Audio Beep" menu item.
The "Audio Beep" menu item.
If the audio beep is active, the R&S
FPC1000 beeps each time a limit is violated.
The audio signal is active when the "Audio Beep" menu item is highlighted.
Limit Lines
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