Q4:How to Synchronize the system Time of all DVRs in a same monitoring site ?

Ans:Time Synchronization can be done through the PSS software by network connection to all DVRs.
  1. Click the “Configure” setup, at the top

  2. Check the “Expand Function” section, on the left

  3. On the right-handed, select each DVR and click “Connecting” to link DVR on line one by one.

  4. After all DVRs got connected, then click the “Sync PC”, now all DVRs will be time sync to the system clock of that PC.