Rohde & Schwarz FSW Series - 6.5.2 n dB Down Marker

Analysis
R&S
®
FSW-K7
144User Manual 1173.9240.02 ─ 17
Phase Noise Measurement State............................................................................... 144
Defining a Reference Point......................................................................................... 144
Switching All Phase Noise Measurements Off............................................................144
Phase Noise Measurement State
Activates or deactivates phase noise measurement for the reference point in the dia-
gram.
This function is only available for delta markers.
If activated, the delta markers display the phase noise measured at defined offsets
from the reference position.
Remote command:
CALCulate<n>:DELTamarker<m>:FUNCtion:PNOise[:STATe] on page 321
CALCulate<n>:DELTamarker<m>:FUNCtion:PNOise:RESult? on page 321
Defining a Reference Point
Instead of using marker 1 as the reference marker, a fixed reference marker can be
defined for phase noise measurement in RF Spectrum analysis.
The "Level" and "Frequency" or "Time" settings define the position and value of the ref-
erence point.
Alternatively, a Peak Search can be performed to set the maximum value of the
selected trace as the reference point.
If "Automatic Peak Search" is activated, a peak search is started automatically after
each sweep and the result is used as the reference point.
Remote command:
CALCulate<n>:DELTamarker<m>:FUNCtion:FIXed:RPOint:Y on page 313
CALCulate<n>:DELTamarker<m>:FUNCtion:FIXed:RPOint:X on page 312
CALCulate<n>:DELTamarker<m>:FUNCtion:FIXed:RPOint:MAXimum[:PEAK]
on page 312
CALCulate<n>:DELTamarker<m>:FUNCtion:PNOise:AUTO on page 320
Switching All Phase Noise Measurements Off
Deactivates phase noise measurement for all markers.
Remote command:
CALCulate<n>:DELTamarker<m>:FUNCtion:PNOise[:STATe] on page 321
6.5.2 n dB Down Marker
A special marker can be defined to determine a characteristic bandwidth or time span
in a measured signal. n dB down markers are configured in the "N dB Down Config"
dialog box, using the "n dB down" function.
To display the "N dB Down Config" dialog box, do one of the following:
●
Press the MKR FUNC key, then select the "Select Marker Function" softkey. Then
select the "n dB down" button. Select the "N dB Down Config" softkey.
Marker Function Configuration