Here is what is acceptable for 56 & 254 QAM at:
Headend 64 QAM
Excellent: 35 MER
Acceptable: 33 MER
Marginal: 30 MER
Headend 256 QAM
Excellent: 35 MER
Acceptable: 35 MER
Marginal: 32 MER
-----------------
NODE 64 QAM:
Excellent: 34 MER
Acceptable: 31 MER
Marginal: 28 MER
NODE 256 QAM
Excellent: 35 MER
Acceptable: 34 MER
Marginal: 30 MER
Hope this will help.
Re: Modulation error ratio
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