The Return QAM Generator mode allows the user to transmit in the upstream either a CW signal with a set frequency (5.00 to 55.00 MHz) and desired level (8.0 to 58.0 dBmV), or a QAM16 modulated haystack at a set frequency (5.00 to 55.00 MHz), desired level (8.0 to 58.0 dBmV), and desired QAM symbol rate (1.28, 2.56, 3.84, 5.12, or 6.40).

Softkeys

Two softkeys on the Return QAM Generator screen provide the following options:

ENABLE TX

Select this softkey to enable or disable transmit.

SETUP

Select Setup softkey to change the mod type or change the Msym/s.