Satellite frequency conversion, Stdma statistics, Figure 3-35 buc lo frequency prompt – Comtech EF Data CDM-570/570L Vipersat User Manual

Page 64: Figure 3-36 satellite frequency conversion prompt

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Vipersat Configuration

3-28

Vipersat CDM-570/570L User Guide

Enter B at the command prompt and specify the correct BUC Local Oscillator

frequency (MHz) that this Remote will be transmitting.

Figure 3-35 BUC LO Frequency prompt

Satellite Frequency Conversion

This menu item appears for the ECMv2 Hub type only.
This parameter, together with the LNB LO Frequency setting, is critical for

determining RF frequency translations between Hub and Remote offsets or data

spectral inversions. Take care in setting these correctly.
Enter F at the command prompt and specify the correct Satellite Frequency

Conversion value (MHz) that this Hub unit.

Figure 3-36 Satellite Frequency Conversion prompt

STDMA Statistics

Entering V at the command prompt in the STDMA screen displays the STDMA

Statistics as shown in either figure 3-37 (Hub) or figure 3-38 (Remote). These

screens provide information for the number of Bursts (Remote only), number of

Burst Maps, and the current STDMA Cycle Length.
Because the Remote modem bursts back to the Hub once every cycle, the

number of Bursts displayed should be a multiple of the number of Burst Maps

displayed, with this multiple determined by the number of cycles per burst map

(1, 2, or more) that has been defined at the Hub. For the example shown in

figure 3-38 (Dynamic Cycle), the number of cycles per burst map is one, and

therefore the number of Bursts equals the number of Burst Maps.

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