R&S FSL Cable TV Measurements (Option K20)
1300.2519.12 2.73 E-11
The spectrum of the input signal is displayed.
Fig. 2-52 Digital TV Spectrum measurement
Overview measurement
This measurement determines the modulation accuracy of a digitally modulated single carrier QAM
signals. The measurement results are checked against the limits and displayed in a table. In this table,
only the important result parameters of digital TV signals are displayed. Less important result
parameters are provided by the Modulation Errors measurement (modulation analysis).
Result parameters that failed the check are displayed in red and bold characters, the table cell is
marked with a star. Result parameters that passed the checks are displayed in green characters. A
global pass or fail comment is displayed in the upper left table corner on a green (for passed) or red (for
failed) background.
Table 2–7: Result parameters – Overview
Parameter Description Definition
MER (rms) root mean square of modulation
error rate
MER (peak) peak of modulation error rate
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