Vivotek NR9682-v2 64-Channel NVR (No HDD) - Manual (Page 131)

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User's Manual - 131
From the Search Event window, you can view and search events by its event types, and use the
Export
button to save a record of these events (in the CSV format).
The sample screen for network security-related events is shown below:
Use the calendar tool to specify the span of time as the search range.