R&S FSL Cable TV Measurements (Option K20)
1300.2519.12 4.237 E-11
CSO
Opens a submenu to measure the carrier–to–second order beat ratio (CSO).
For further information refer to "CSO – analog TV" on page 4.215.
Remote: CONF:ATV:MEAS CSO
Remote: CALC:ATV:RES:CSO? ALL
CSO Setup
Opens the CSO Setup dialog box to configure the following:
– Measurement Method
Off–Service: The current measurement channel has to be switched off. An according message
prompts you to do so. In this channel, a noise marker is placed, and the noise power is
determined.
Quiet Line: While an analog TV signal is present, the carrier–to–second order beat ratio is
measured using the so–called "Quiet Line''. The measurement is fully automated.
– Measurement Frequencies
The table contains center frequencies (CF) and span values. The center frequency values are
relative to the vision carrier frequency. One parameter set defines a frequency span and is
used in one measurement. Only selected parameter sets are used in the measurements. If no
parameter set is selected at all, the measurement is performed over all listed parameter sets.
For the Quiet Line measurement method, the table remains empty.
– Noise Floor Correction
This option activates or deactivates the noise correction factor measurement. By default, the
option is deactivated. In the noise correction factor measurement, the noise of the R&S FSL is
determined. Therefore you are prompted to remove the cable from the R&S FSL's RF input
when activating the option.
Remote: ATV:CSO:MEAS:MODE QLIN (Measurement Method)
Remote: ATV:CSO:TABL2:MFR 1,–2000,2000 (Measurement Frequencies)
Remote: ATV:CSO:POW:NCOR ON (Noise Floor Correction)
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