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V i p e r s a t C o nf i g u r a t i o n
cally revert to its Home State settings and the VMS will remove all allocated
resources (bandwidth, demod(s)), freeing them for use by any other Remote in
the Vipersat network.
Because this feature is configured in the VMS, the status (Disabled, or the time
period in minutes) appears as an information-only display in the Vipersat
Configuration menu (figure 3-6).
Dynamic Power Control Configuration
Dynamic Power Control (DPC) is a Vipersat feature that acts to regulate the
transmit power of the Vipersat satellite modem, such that the specified receive
signal level (E
/N
) is met for the receiving Vipersat units in the group. DPC is
b
o
driven by the receiver demod, which notifies the transmitting modem of the
current E
/N
value.
b
o
Refer to Appendix C, "Dynamic Power Control", in this document for addi-
tional information on the DPC feature.
The Dynamic Power Control Configuration screen (enter C in the Vipersat
Configuration menu) allows for setting the parameters for the CDD-56X power
levels. The information and commands in the menu will vary depending on the
function the target CDD-56X performs in the network. The screen shown in
figure 3-51 is from a unit serving as a Hub with STDMA (burst controller).
Note, however, that the only parameter settings that apply to the CDD-56X are
DPC Enabled, Speed Up EbNo, and Target DPC Address. Because all of the
remaining settings shown in this screen are redundant to those configured in the
satellite modem, they do not apply to the CDD-56X and can be disregarded.
For comparison, the DPC Configuration screen for a unit operating as a Hub or
Remote with Expansion (SCPC mode) is shown in figure 3-52. Note that only
the applicable settings appear in this screen.
V i p e r s a t C D D - 5 6 X S e r i e s U s e r G u i d e
3-40
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