dB - Decibel
dBm - Decibels referenced to one milliwatt
dBmV - Decibels referenced to one millivolt
dBµV - Decibels referenced to one microvolt
Delta V/A - Delta Video to Audio - Calculated by subtracting the (first
if DUAL) audio carrier level from the video carrier level (for analog
TV and DUAL type channels only)
MER - Modulation Error Ratio
QAM - Quadrature Amplitude Modulation (64 QAM and 256 QAM)