Sierra Video G.R.I.P. V3.1.0 - Manual (Page 32)

Sierra Video Systems
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The screen will change to the following:
The sync frequencies present on the input H or V channels will be displayed next to the
corresponding input number.
Sync Termination
Some models of SVS routers have the ability to select sync channel input termination
using GRIP. If your router has this option, the following section describes the steps
necessary to report sync rate.
To access the Sync Termination screen, select Audio/Sync/Mute Setup from the Router
Configuration menu: