Measurements
R&S
®
FSW
187User Manual 1173.9411.02 ─ 19
The measurement is performed on the trace that marker 1 is assigned to. To shift
marker 1 and measure another trace, use the "Marker to Trace" softkey in the "Marker"
menu (see "Assigning the Marker to a Trace" on page 300).
Remote command:
CALCulate<n>:MARKer<m>:FUNCtion:POWer:SELect on page 698
CALCulate:MARKer:FUNCtion:POWer<sb>:RESult? on page 696
CALCulate<n>:MARKer<m>:FUNCtion:POWer[:STATe] on page 698
Channel Bandwidth
Defines the measurement channel bandwidth.
The default setting is 14 kHz.
Remote command:
[SENSe:]POWer:ACHannel:BANDwidth|BWIDth[:CHANnel<ch>] on page 702
Adjust Settings
Enables the RMS detector and adjusts the span to the selected channel bandwidth
according to:
"4 x channel bandwidth + measurement margin"
The adjustment is performed once; if necessary, the setting can be changed later on.
Remote command:
[SENSe:]POWer:ACHannel:PRESet on page 699
5.4.4 How to Determine the Carrier-to-Noise Ratio
1. Press the "C/N, C/NO" softkey to configure the carrier-to-noise ratio measurement.
2. To change the channel bandwidth to be analyzed, press the "Channel Bandwidth"
softkey.
3. To optimize the settings for the selected channel configuration, press the "Adjust
Settings" softkey.
4. To activate the measurements without reference to the bandwidth, press the "C/N"
softkey.
To activate the measurements with reference to the bandwidth, press the "C/NO"
softkey .
5. If the carrier signal is located within the analyzed channel bandwidth, switch off the
carrier signal so that only the noise is displayed in the channel and perform a sec-
ond measurement.
The carrier-to-noise ratio is displayed after the measurement has been completed.
Carrier-to-Noise Measurements
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