BER - Bit Error Rate
dB - Decibel
dBm - Decibels referenced to one milliwatt
dBmV - Decibels referenced to one millivolt
dBµV - Decibels referenced to one microvolt
DQI - Digital Quality Index
HFC - Hybrid Fiber Coax
Pre BER - Bit Error Rate before Forward Error Correction
Post BER - Bit Error Rate after Forward Error Correction
QAM - Quadrature Amplitude Modulation
MER - Modulation Error Ratio