Vipersat Configuration

NOTE

Note: Refer to the Viper Calculator for determining preamble length values to enter at the command prompt. If you not have a copy of the latest Viper Calculator, contact your Comtech Vipersat Networks representative to inquire about a copy.

Slot Data Length

This menu item displays the Slot Data Length in milli-seconds and bytes for the target CDM-570/570L, and represents the amount of data that can be transmit- ted or received in one spin of the STDMA cycle by each of the Remotes belong- ing to that group.

Depending on the Hub type that is defined for the modem, the appearance of this parameter will vary:

Fixed – Slot Data Length

Dynamic Slot – Nominal Data Length, Minimum Data Length

Dynamic Cycle – Maximum Data Length, Minimum Data Length

ECM & GIR – Minimum Data Length

On a Hub unit, entering B and M at the command prompt brings up the dialogs for specifying the data length in milli-seconds for the target CDM-570/570L, as shown in figure 3-15.

On Remote units, this menu item is an information-only display.

Figure 3-15Slot Data Length (Nominal)

Slot Cycle Length

This menu item is for information only and displays the slot cycle length in milli-seconds and bytes for the target CDM-570/570L. This value represents the total amount of time (preamble, data length, and guardband) allocated to the remote modem during one spin cycle.

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Vipersat CDM-570/570L User Guide

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Image 48
Cables to Go CDM-570L manual Slot Data Length, Slot Cycle Length