30 S&C Instruction Sheet 461-509
Con guring the Communications Gateway
Time Synchronization
The communications gateway supports three primary methods of time synchronization:
“GPS only,” “SCADA only,” and “GPS Primary, SCADA backup.” Select the desired option
from the Time Synchronization Source dropdown menu and click the Save button.
See Figure 20.
The communications gateway also supports a fourth method of time synchronization.
To perform a one-time synchronization from the user’s computer that is accessing this
Web interface, click on the Time Sync From User Device button. This will immediately
sync the gateway’s clock to the time in the user’s computer. After this one-time synchro-
nization, the gateway will continue to use its configured Time Synchronization Source
to maintain its clock in the future. This option could be useful for lab purposes or for
initial system deployment.
Figure 20. Time Synchronization Source menu.
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