Cable TV Measurements (Option K20) R&S FSL
1300.2519.12 4.238 E-11
CTB
Opens a submenu to measure the carrier–to–composite triple beat ratio (CTB). The
measurement always takes place off–service with 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.
For further information refer to "CTB – analog TV" on page 4.216.
Remote: CONF:ATV:MEAS CTB
Remote: CALC:ATV:RES:CTB? ALL
CTB Setup
Opens the CTB Setup dialog box to configure the following:
– 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.
– 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:CTB:TABL1:MFR 1,100,10000 (Measurement Frequencies)
Remote: ATV:CTB:POW:NCOR ON (Noise Floor Correction)
To Next Page
Loading...
