Rohde & Schwarz FPL1000 Series, User Manual

Page: 431 / 899

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
431 User 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