Const menu – Kathrein MSK 33 User Manual
Page 78
Const Menu
78
Examples for QAM constellation diagram
The following examples show possible errors and their representation in the constellation diagram.
64 QAM signal without faults
64 QAM signal with intermodulation of narrow
band noise
64 QAM signal with low broadband noise.
64 QAM signal with strong broadband
Possible cause: Bad amplifier or to small of
noise. Possible cause: cable loss is to high
input level on an amplifier in the
or amplifier has a defect.
transmission line.
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