13
AQM Series
Instruction Manual
Appendix A - QAM Signal Level Testing
This section describes the preferred method for measuring and setting the QAM output level of the unit. It requires the
ability to output a CW (carrier wave) QAM signal.
The CW QAM signal is used to provide the true equivalent signal level for the QAM carrier. The AQM is capable of
supplying the output QAM signal in CW mode. This simplifies the level measurement process dramatically because the
level does not need to be adjusted for the limitation in analyzer bandwidth settings. After setting the appropriate level in
CW mode, the unit is changed back to normal mode.
Any meter that can measure CW Carrier Power Level can be used. The CW Carrier Level is equal to the QAM Power Level
that will be presented in normal mode.
