Comtech EF Data CDM-570/L Vipersat Parameter Editor - Manual (Page 45)

Chapter 2 - Using Parameter Editor 2-29
Vipersat
Refer to the Vipersat VMS User Guide for implementation details.
Carrier Inhibit Timer
The Carrier Inhibit Timer parameter provides a time period to be specified
that controls when a Remote modem should mute its transmitter in the event
that there is a loss of link with the Hub. 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.
Hub Timer Setting
In a Hub unit, this parameter provides a fixed setting that can be specified for
the keep alive message sent to the Remote(s). This provides an alternate to the
Burst Map, which is variable and may become excessively long in certain appli-
cations.
When implemented, this setting is made at either the TDM outbound unit or a
switched demod.
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.
Remote Timer Setting
In a Remote unit, this parameter provides a setting for how long the Remote has
not received the Burst Map from the Hub STDMA Controller before that
Remote mutes its transmitter.
Note that this timer setting should be at least three times greater (longer in dura-
tion) than the timer setting at the Hub to ensure that the nework link is main-
tained.
Network ID
The Network ID designation defines to which network the modem/router
belongs. All devices in a common network will have the same network ID.
The network ID is used by the VMS to identify Vipersat units within a network
and allows the VMS to manage multiple networks, each with its own unique
network ID number.
Database Version
The version number is read-only and displays the version of the firmware
running in this modem unit.