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CDM-425 Advanced Satellite Modem
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The Figure K-3 graph shows the switch points with the Target Eb/No margin set to 0dB. However,
the switch points can be moved (increased) by configuring the Target Eb/No margin parameter,
which can vary from 0 to 4.5 dB, in 0.5dB steps. In a fading environment, it is strongly
recommended to add sufficient margin to maintain an adequate link quality (and to maintain
demod lock) during the interval between the Eb/No degrading and the ACM controller responding
by lowering the ModCod. See Sect. K.11 Notes and Recommendations.
Appendix K
K–15
MN-CDM-425
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