UMD NVR User Manual
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5.4.4 Preview Settings
Preview Settings can control the relevant preview state, including open preview polling
depending on the mode and frequency settings, preview capture settings and so on.
5.4.5 Exception Handling
This system has a very comprehensive exception handling mechanism, when there is no
hard drive, hard disk full, hard disk error, IP address conflict, network cable break,
unauthorized access and other anomalies, and the system can be turned to the police.