The Return QAM Generator test (additional purchase required) enables you test the return path for any signal problems requiring network alignment and repair or even maintenance.
DSAM is equipped with this mode so you can evaluate problems in the network arising due to phase and amplitude distortions. Generally these problems need attention to take advantage of the higher capacity of QAM16 or QAM64.
NOTE: QAM 64 is only available on DOCSIS 2.0 hardware, it will be disabled if it is not available on the meter’s hardware.
The Return QAM Generator function generates an upstream signal of a desired frequency, desired level and desired modulation type (QAM16, QAM64, or CW). The DSAM will generate the signal and a signal demodulator can be used to demodulate/detect the signal.