This is possible by using a USB camera and the event recording function.

 [Setting example]

• Immediately before occurrence: 30 s
• Immediately after occurrence: 20 s
  

1. Select [System Setting] → [Hardware Setting] → [Other Devices] → [USB Camera].
   
   
   
2. Configure the settings under [Port 1 Setting] in the [USB Camera Properties] window.
   Camera Resolution: 640 x 480
   Use Event Record Function: Yes
   
3. Close the [Hardware Setting] window.
   
   
4. Select "Built-in Socket" for [Storage Connection Target] at [System Setting] → [Other] → [Storage Setting].
   
   
5. Configure the video recording settings at [System Setting] → [Alarm Server].
   
   Record occurrence Before: 30 s, After: 20 s
   

This completes the configuration of settings.

For more information, refer to the following manuals.

• For information on USB cameras and event recording, refer to the Reference Manual 2.
• For information on the alarm server, refer to the Reference Manual 1.