Adaptive Coding And Modulation (Acm) - Trango Systems TrangoLINK GigaPlus User Manual

Adaptive Coding and Modulation (ACM)

The ACM feature works in conjunction with the Mean Square Error (MSE) values. Using
the acm command, the operator enables the ACM function and then sets the speed
using the speed command. When ACM is enabled (on) and the link MSE becomes
degraded, the radio will automatically shift down in modulation and speed based on the
MSE degrade threshold setting shown in Table 5. Since the original set modulation may
be QAM256, QAM128, QAM64, QAM32, or QAM16, the table shows each setting and
total range of modulation levels that will be used for that setting. The threshold values
can be changed by the operator if desired, however the default values shown are the
recommended settings.
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Trango Systems, Inc. GigaPlus User Manual Rev 3.1