Camera Accessories User Manual
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Applications > DI and DO 
Advanced Mode
Digital input: Select High or Low to dene the activate status for the digital input. The Network Camera's 
current status is shown on the right.
Digital  output: Select Grounded  or  Open  to  define  normal  status  for the  digital output. The  Network 
Camera will show whether the trigger is activated or not.
Set up the event source as DI on Event > Event settings > Trigger. Please refer to page 89 for detailed 
information.
Applications > Tampering detection 
This  section explains how  to set  up camera  tamper  detection.  With  tamper detection, the 
camera is capable of detecting incidents such as redirection, blocking or defocusing, or even 
spray paint.
Please follow the steps below to set up the camera tamper detection function:
1. Check Enable camera tampering detection.
2. Enter the tamper trigger duration. (10 sec. ~ 10 min.) The tamper alarm will be triggered only when the  
 tampering factor (the difference between current frame and pre-saved background) exceeds the 
 trigger threshold.
3. Set  up the event source as Camera Tampering Detection on Event > Event settings  > Trigger. 
Please refer to page 89 for detailed information.










