4.0 Managing the SMG, Continued
35
018-354-B0-001, Rev. A (05/2018)
QAM Constellation Common Impairments
Several common impairments tend to reveal themselves on the constellation display which can help determine the cause
of the reduced MER levels. Below are examples of several of these common impairments and their footprints.
Fig. 4-11, Normal (Good Quality) and Individual Cell Characteristics
Fig. 4-12, Fuzzy (Low CNR and/or Low MER) and Individual Cell Characteristics
Individual
Cells and
Entire QAM
Constellation
Individual
Cells and
Entire QAM
Constellation
