Comtech EF Data CDM-570/570L Vipersat - Manual (Page 80)

Vipersat Configuration
3-44 Vipersat CDM-570/570L User Guide
map containing a large number (up to 100) of remotes running in ECM mode
where the burst period exceeds the Remote carrier inhibit timer.
When implemented, this parameter is set at either the TDM outbound unit or a
switched demod, not at the STDMA Controller, in order to prevent a problem
should the burst controller be rebooted.
Enter C at the command prompt in the Auto Switching screen to display the
dialog shown in figure 3-56.
Figure 3-56 Keep Alive Timer for Carrier Inhibit prompt
Note that this timer setting should be at least three times faster (shorter in dura-
tion) than the timer setting at the Remote(s) to ensure that network links are
maintained.
Time for Carrier Inhibit
This menu item appears for Remote modems only.
The Time for Carrier Inhibit feature provides a time period to be specified for
how long the Remote modem has not received the Burst Map from the Hub
STDMA Controller (loss of link) before that Remote mutes its transmitter. This
feature is useful, for example, in an SNG application for a mobile Remote
whose antenna is no longer aligned with the satellite and should not continue to
transmit the carrier signal.
Enter C at the command prompt in the Auto Switching screen to display the
dialog shown in figure 3-57. This parameter is configured on an individual, per
Remote basis.
Figure 3-57 Time for Carrier Inhibit prompt