User Manual

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
453User Manual 1178.3370.02 ─ 03
Remote command:
CALCulate<n>:MARKer<m>:FUNCtion:DEModulation:HOLDoff on page 756
Modulation
Defines the demodulation mode for output (AM/FM). The default setting is AM.
Remote command:
CALCulate<n>:MARKer<m>:FUNCtion:DEModulation:SELect on page 757
Loudspeaker
If enabled, the demodulated audio signal is output to the IF/VIDEO connector (on the
rear panel of the R&S FPL).
This connector is only available if the R&S FPL1-B5 option is installed.
Note that output to the PHONES connector on the front panel is always possible,
regardless of the "Loudspeaker" state.
Remote command:
SYSTem:SPEaker[:STATe] on page 684
Audio Output Volume
Sets the volume of the built-in loudspeaker for demodulated signals. This setting is
used for all applications.
The setting is available in the time domain in Spectrum mode and in Analog Demodu-
lation mode.
This connector is only available if the R&S FPL1-B5 option is installed.
Remote command:
SYSTem:SPEaker:VOLume on page 684
7.9.4.8 Marker Peak List
Access: "Overview" > "Analysis" > "Marker Functions" > "Marker Peak List"
Or: MKR > "Select Marker Function" > "Marker Peak List"
A common measurement task is to determine peak values, i.e. maximum or minimum
signal levels. The R&S FPL1000 provides various peak search functions and applica-
tions:
●
Setting a marker to a peak value once (Peak Search)
●
Searching for a peak value within a restricted search area (Search Limits)
●
Creating a marker table with all or a defined number of peak values for one sweep
(Marker Peak List)
●
Updating the marker position to the current peak value automatically after each
sweep (Auto Peak Search)
Peak search limits
The peak search can be restricted to a search area. The search area is defined by limit
lines which are also indicated in the diagram. In addition, a minimum value (threshold)
can be defined as a further search condition.
Marker Usage