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DMD2050E Universal Satellite Modem
To setup ITA Mode first select all the appropriate waveforms you are intending to run.
Waveforms marked "unattainable" are not allowed because the current symbol rate cannot be
obtained based on the current serial rate selected, in other words the remaining Ethernet rate will
be less than zero. Set the same waveforms in both the TX ITA and RX ITA functions so they
match.
Adjust uplink power to a moderate value of approximately 16 dB C/N at 8.3 MSPS.
On the receiver I suggest setting the margin to 1 dB and leave the hysteresis at 0.
Next enable the ITA control. The Web page status will indicate and the indicator for the current
waveform will follow what the system is currently operating at. This is the case in both the
transmission and receives functions. This will start the process of adaptation. At 16 dB Es/No
this will ramp up the mod/cod every thirty seconds until the threshold value is reached.
MN-DMD2050E Revision 2
Figure J-8 - Initial Setup DMD2050E, Demodulator ITA
ITA Operation
J–19
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Troubleshooting
