Operational Case Examples - Radyne DMD20 Installation And Operation Manual

User Interfaces

4.5.1 Operational Case Examples

Note: 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 modem. Any mode of operation can be entered from this starting point.
Case 1: IDR 8.448 Mbps, 3/4 Rate Viterbi
Starting with the Data Rate = 512 Kbps
Modulator:
Method 1 -
Set mode to IDR
Under Mod Data menu:
Under Interface Menu:
Under Mod IF menu:
Method 2 -
Set Mod strap code to: 128
Under Interface Menu:
Under Mod IF menu:
Demodulator:
Method 1 -
Set mode to IDR
Under Demod IF menu: Set desired Rx frequency
Under Demod data menu:
Under Interface menu:
Method 2 -
Set Demod strap code to 128
Under Demod IF menu, set desired Rx frequency
Under Interface Menu:
4-32
Set code rate to 3/4 VIT
Set data rate for 8448000
Set Interface type
Set Tx clock selection
Set desired Tx frequency and power level
Turn IF ON
Set Interface type
Set Tx clock selection
Set desired Tx frequency and power level
Turn IF on
Set code rate to 3/4 VIT
Set data rate for 8448000
Set Interface type
Set Buff clock selection
Set Buffer Size
Set Interface type
Set Buff clock selection
Set Buffer Size
DMD20 Universal Satellite Modem
TM103 - Rev. 1.1