Comtech EF Data DMDVR20 LBST Rev 1.1 - Manual (Page 108)

DMDVR20 LBST Satellite Modem Appendix D
TM136 – Rev. 1.1 D -5
D.1.1 Operational Case Examples
For best results always begin setup by setting the data rate to 512 Kbps.
This data rate is applicable for all modes and as such provides a
convenient launch point for setting up the modulator parameters. Any
mode of operation can be entered from this starting point.
Case 1: IBS 1.544 Mbps, 3/4 Rate Viterbi
Starting with the Data Rate – 512 Kbps
Modulator:
Method 1 -
Under Interface Menu:
Set Interface type
Set Tx clock selection
Set Framing to 1/15
Set mode to IBS
Under Mod Data Menu:
Set code rate to 3/4 VIT
Set data rate for 1544000
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: 120
Under Mod IF Menu: Set desired Tx frequency and power level
Turn IF on