Comtech EF Data Vipersat 564L Guide de l'utilisateur Page 70

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Vipersat Configuration
3-34 Vipersat CDD-56X Series User Guide
a means to coordinate timing and utilize buffering to eliminate these data
outages.
To access the Hitless Switching screen, enter H from the STDMA/SCPC Auto
Switching screen (see figure 3-38).
Figure 3-43
Hitless Switching screen
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.
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