Comtech EF Data CDM-570/570L Vipersat - Manual (Page 50)

Vipersat Configuration
3-14 Vipersat CDM-570/570L User Guide
Group ID
The STDMA Group ID number defines a group of equipment (Hub and
Remote units) that will respond to the output of a single STDMA burst control-
ler. This group is addressable within a network which, in turn, is defined by the
Network ID number assigned to the CDM-570/570L.
Allocation of bandwidth is shared among the remotes in an STDMA group.
Depending on the number of remotes in a network, a Hub may have multiple
burst controllers, each with its own set of remotes. This is accomplished by
assigning a unique Group ID number to each controller and its associated
remotes.
Note: The STDMA Group ID number and the Network ID number are indepen-
dent. There can be multiple STDMA groups within a single network.
The target CDM-570/570L Group ID can be modified by entering an I at the
command prompt to display the dialog shown in figure 3-11.
Figure 3-11 Group ID prompt
STDMA Max Power Hunt
This menu item appears for Remote modems only.
Should link reception from a Remote be incorrect or impaired (e.g., poor envi-
ronmental conditions), the STDMA Max Power Hunt feature is an option on
the Remote modem that automatically adjusts the Remote transmit power to
ensure that burst map acknowledgements from that unit are received by the Hub
burst controller. When enabled, the burst controller sets a flag in the burst map
that indicates it is not receiving acknowledgements from an enabled Remote.
When the Remote receives the burst map, it will see the flag and automatically
increase power up to the maximum value specified with this parameter (3, 6, or
9 dB) above the default or Home State setting. If this closes the link, the burst
controller will clear the flag. Note that if the dB increase is more than is neces-
sary, DPC will make a down adjustment to the appropriate level and this adjust-
ment will be added to the DPC Offset.
This feature option is Enabled/Disabled by entering H at the command prompt.
NOTE