17
FlexCoder
Instruction Manual
Final Output Level:
allows the user to select the RF output level for the QAM outputs. The range is 35 to 42 dBmV.
All four QAM outputs change simultaneously. It is recommended the output level be maintained at 40 dBmV for
normal operation.
Output QAM Mode:
allows the user to select the desired QAM modulation mode. Options are: 64B, 256B, 16A,
32A, 64A, 128A, and 256A. For most applications in the USA, the recommended QAM modulation mode is 256B – it
allows four HD programs, not to exceed 38.8 Mbps, per RF QAM channel.
Output QAM Map:
allows the user to select the desired QAM Map. Options are STD, IRC, and HRC. (Default: STD)
Output QAM Data Rate:
indicates the maximum data rate depending on the selected QAM mode, for example
5.360500 Mbaud for QAM 256B.
Output QAM Interleaver:
indicates the interleaver value for the selected QAM mode.
Output QAM Alpha:
indicates the Alpha value for the selected QAM mode
QAM Lock Status:
indicates whether Quad-QAM module is working properly (locked) or not. The module may take
a few seconds to lock when QAM output parameters are changed.
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Remember
to
click
on
the
SAVE
button
to
apply
the
new
values/configurations.
4.6 “Main > QAM Config” Screen (continued)
