Comtech EF Data CDM-570/570L Vipersat - Manual (Page 84)

Vipersat Configuration
3-48 Vipersat CDM-570/570L User Guide
This screen will initially display all lock times as -1, indicating that Hitless
Switching is currently disabled. To enable the Hitless Switching feature, enter R
at the command prompt to restore default lock times.
Delay for Mod
This parameter allows the operator to insert additional delay to buffer more data
after modulator transmission is ceased. Enter M to modify this parameter.
Delay for Demod
This parameter allows the operator to insert additional delay to account for the
tuning of the demodulator. Enter D to modify this parameter.
LockTimes
LockTime settings for the four data rates displayed can be adjusted either up or
down, but default settings based on satellite testing should be used as a starting
point. These defaults are stored in each modulator/demodulator unit and are
restored by entering R at the command prompt.
Once restored, the lock time for each data rate can be modified by entering the
corresponding number.
Figure 3-64 Set LockTime prompt
To disable Hitless Switching, enter -1 for all lock times.
Apply Delay Values
To implement any modifications to the Hitless Switching parameters, enter A at
the command prompt to apply these values to the modem.
SOTM Update
This menu item appears for the Hub modem only.
The SOTM Update enables RIPv2 (Routing Information Protocol) in forward
routes, providing dynamic updates to the routing table. This allows routing
configurations for Remotes to be written by the VMS via the Hub TDM. When
the VMS writes the routes, the TDM unit will generate a RIPv2 routing update