Radyne DMD50 Betriebsanleitung Seite 182

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Seitenansicht 181
DMD50 Universal Satellite Modem Appendix D
TM118 – Rev. 1.1 D-7
Demodulator:
Method 1 -
Under Interface Menu:
Set Interface type
Set Buff clock selection
Set Buffer Size
Set Framing to 1/15:
Set mode to IBS:
Under Demod IF Menu: Set desired Rx frequency
Under Demod Data Menu:
Set code rate to 3/4 VIT
Set data rate for 1544000
Under Interface Menu:
Set Interface type
Set Buff clock selection
Set Buffer Size
Method 2 -
Under Interface Menu:
Set Interface type
Set Buff clock selection
Set Buffer Size
Set Demod strap code to: 120
Under Demod IF Menu: Set desired Rx frequency
Case 3: Closed Network, 3/4 Rate Viterbi, IBS Overhead
Starting with the Data Rate = 512 Kbps
Modulator:
Method 1 -
Under Interface Menu:
Set Interface type
Set Tx clock selection
Set mode to IDR:
Under Mod Data Menu:
Set code rate to 3/4 VIT
Set Framing for 1/15
Under Mod IF Menu: Set desired Tx frequency and power level
Turn IF ON
Method 2 -
Under Interface Menu:
Set Interface type
Set Tx clock selection
Set Mod strap code to: 101
Under Mod IF Menu: Set desired Tx frequency and power level
Turn IF on
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