Vivotek NR9682-v2 64-Channel NVR (No HDD) - Manual (Page 153)

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User's Manual - 153
When the alarm action is set to "Send live streaming," the videos coming from the same camera
will occupy only one view cell.
In the Alarm tab window, use the thumbtack button to freeze the current screen. If
thumbtacked, the other incoming alarms will not affect the current screen.
On arrival, the latest alarm will display with a blinking red frame. A selected view cell will display
with a yellow frame.