MONITORING UPSTREAM FREQUENCY BAND

摘要

The spectrum analyzer includes an input (115) adapted to receive an input signal and a mixer (30), coupled to the input. The mixer is adapted to produce a down converted signal from the input signal. The spectrum analyzer further includes an adjustable decimation circuit (112), coupled to the mixer, that selectively decimates the down converted signal, a decoder (108), coupled to the mixer, that selectively controls the frequency of the down converted signals from the mixer to measure power over a frequency spectrum of the input signal.