Vivotek NR9682-v2 64-Channel NVR (No HDD) - Manual (Page 221)

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User's Manual - 221
6. For administrators who need to synchronize device time with a NTP server, he can deselect
the "Synchronize camera time with system" checkbox.
When adding cameras via ONVIP or RTSP protocol, you can select to synchronize its time
setting with your VAST server or to keep the camera setting. The default is using the camera
time setting.