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OM20 Universal Outdoor Modem
Case 2: IBS 1.544 Mbps, 3/4 Rate Viterbi
Starting with the Data Rate – 512 Kbps
Modulator:
Method 1 -
Under Interface Menu:
Set Framing to 1/15
Set mode to IBS
Under Mod Data Menu:
Method 2 -
Set Mod strap code to: 120
Demodulator:
Method 1 -
Under Interface Menu:
Set Framing to 1/15:
Set mode to IBS:
Under Demod Data Menu:
Method 2 -
Under Interface Menu:
Set Demod strap code to: 120
MN-OM20– Revision 5
Set Interface type
Set Tx clock selection
Set code rate to 3/4 VIT
Under Mod IF Menu:
Under Interface Menu:
Under Mod IF Menu:
Turn IF on
Under Demod IF Menu: Set desired Rx frequency
Set code rate to 3/4 VIT
Under Interface Menu:
Set Interface type
Under Demod IF Menu: Set desired Rx frequency
Set data rate for 1544000
Set desired Tx frequency and power level
Turn IF ON
Set Interface type
Set Tx clock selection
Set desired Tx frequency and power level
Set Interface type
Set Buff clock selection
Set Buffer Size
Set data rate for 1544000
Set Interface type
Set Buff clock selection
Set Buffer Size
Set Buff clock selection
Set Buffer Size
Appendix G
G–7
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