Cables to Go CDM-570L manual Stdma Tx Rate, Hub Type

Vipersat Configuration

STDMA Tx Rate

This menu item shows the STDMA transmit rate in bps. This item is read-only and cannot be modified in this menu.

Hub Type

This menu item is only displayed if the CDM-570/570L is being used as a Hub in the network. Vipersat STDMA has five modes of operation:

•Fixed - All remotes get the same size slot, regardless of each remote’s activity

•Dynamic Slot - Slot size is adjusted each cycle depending on activity during the previous cycle

•Dynamic Cycle - A dynamic cycle allows changing the cycle time, and corresponding latency, as loads change always providing minimum latency for the current traffic load.

•GIR - Guaranteed Information Rate allows assigning a guaranteed data rate to a channel.

•Entry Channel - Entry channel mode provides an on-demand channel for applications such as a mobile remote.

NOTE

Figure 3-8Hub Type prompt

Entering a number from 1 to 5 at the command prompt determines the band- width allocation mode for the Hub CDM-570/570L.

Note: If the selected Hub STDMA mode is GIR (Guaranteed Information Rate) or Entry Channel, normal load switching is automatically disabled. In GIR mode, the Remote is switched to SCPC as soon as the GIR threshold is reached, if there is a switch rate defined. In Entry Channel mode, the Remote is switched to SCPC as soon as the Hub receives the first transmission from the Remote.

Refer to Appendix B, "Automatic Switching" for details on how each of the bandwidth allocation modes functions and the parameters and processes used to calculate the commands for each mode.

Chapter 3 - Using the Command Line Interface (CLI) 3-9