The Spectrum Application (RF Measurements)
R&S
®
FPL1000
380
User Manual 1178.3370.02 ─ 11
Span
Defines the span (band) around the marker for which the power is measured.
The span is indicated by lines in the diagram. You can easily change the span by mov-
ing the limit lines in the diagram. They are automatically aligned symmetrically to the
marker frequency. They are also moved automatically if you move the marker on the
screen.
Remote command:
CALCulate<n>:MARKer<m>:FUNCtion:BPOWer:SPAN
CALCulate<n>:DELTamarker<m>:FUNCtion:BPOWer:SPAN
Power Mode
Defines the mode of the power measurement result.
For Analog Modulation Analysis, the power mode is not editable for AM, FM, or PM
spectrum results. In this case, the marker function does not determine a power value,
but rather the deviation within the specified span.
"Power"
The result is an absolute power level.
The power unit depends on the
"Relative
Power"
This setting is only available for a delta band power marker.
The result is the difference between the absolute power in the band
around the delta marker and the absolute power for the reference
marker (see
on page 263). The powers are sub-
tracted logarithmically, so the result is a dB value.
[Relative band power (Delta2) in dB] = [absolute band power (Delta2)
in dBm] - [absolute (band) power of reference marker in dBm]
"Density"
The result is a power level in relation to the bandwidth, displayed in
dBm/Hz.
Remote command:
CALCulate<n>:MARKer<m>:FUNCtion:BPOWer:MODE
CALCulate<n>:DELTamarker<m>:FUNCtion:BPOWer:MODE
Switching All Band Power Measurements Off
Deactivates band power measurement for all markers.
Remote command:
CALCulate<n>:MARKer<m>:FUNCtion:BPOWer[:STATe]
CALCulate<n>:DELTamarker<m>:FUNCtion:BPOWer[:STATe]
6.9.4.7
Demodulating Marker Values and Providing Audio Output (Marker Demodulation)
Access
: "Overview" > "Analysis" > "Marker Functions" > "Select Marker Function" >
"Marker Demodulation" > "Marker Demod Config"
Or
: [MKR] > "Select Marker Function" > "Marker Demodulation" > "Marker Demod
Config"
The R&S
FPL1000 provides demodulators for AM, FM and PM signals. The demodula-
tion marker function sends the demodulated data at the current marker frequency to
Marker Usage