Digital Analysis (QAM View OPT4): Equalizer Mode
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Fig. 9-19 64 QAM 2x2 Zoom Screen
The Adaptive Equalizer corrects the effects of reflections and “frequency tilt”
in the transmission path. The Equalizer Mode indicates the strength of
specific reflections, their location in relation to the test point location, and
how hard the equalizer is working to correct them. Two additional displays in
this mode, in-channel frequency response and group delay, provide
information about the characteristics of frequency and phase response.
Equalizer Main Screen Features
The EQUALIZER Main Screen (see Fig. 9-20) displays the:
• channel number and modulation format
• velocity of propagation (VOP) value
• graphical display of the filter coefficients and the “high” mask line
• coefficient, distance, and dBc values
• equalizer stress level (low, medium, or high).
EQUALIZER MODE
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