User Manual

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
431User Manual 1178.3370.02 ─ 03
Auto Max Peak Search / Auto Min Peak Search ........................................................431
Search Limits ............................................................................................................. 432
└ Search Limits ( Left / Right )......................................................................... 432
└ Search Threshold .........................................................................................432
└ Use Zoom Limits ..........................................................................................432
└ Deactivating All Search Limits ..................................................................... 432
Search Mode for Next Peak
Selects the search mode for the next peak search.
"Left"
Determines the next maximum/minimum to the left of the current
peak.
"Absolute"
Determines the next maximum/minimum to either side of the current
peak.
"Right"
Determines the next maximum/minimum to the right of the current
peak.
Remote command:
Chapter 8.8.8.4, "Positioning the Marker", on page 719
Exclude LO
If activated, restricts the frequency range for the marker search functions.
"On"
The minimum frequency included in the peak search range is ≥ 5 ×
resolution bandwidth (RBW).
Due to the interference by the first local oscillator to the first inter-
mediate frequency at the input mixer, the LO is represented as a sig-
nal at 0 Hz. To avoid the peak marker jumping to the LO signal at 0
Hz, this frequency is excluded from the peak search.
"Off"
No restriction to the search range. The frequency 0 Hz is included in
the marker search functions.
Remote command:
CALCulate<n>:MARKer<m>:LOEXclude on page 716
Peak Excursion
Defines the minimum level value by which a signal must rise or fall so that it is identi-
fied as a maximum or a minimum by the search functions.
Entries from 0 dB to 80 dB are allowed; the resolution is 0.1 dB. The default setting for
the peak excursion is 6 dB.
For more information see Chapter 7.9.4.8, "Marker Peak List", on page 453.
Remote command:
CALCulate<n>:MARKer<m>:PEXCursion on page 716
Auto Max Peak Search / Auto Min Peak Search
If activated, a maximum or minimum peak search is performed automatically for
marker 1 after each sweep.
For spectrogram displays, define which frame the peak is to be searched in.
Marker Usage