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VIVOTEK
116 - User's Manual
Applications > DI and DO
Connect DI or DO devices to the camera's terminal block, the camera will automatically detect
the current connection state as pulled-high or pulled-low. You may then define the triggering
condition.
Digital input: Select High or Low to dene the "active state" for the digital input. The Network
Camera will report the current status.
Digital output: Select Grounded or Open to dene the "active state" for the digital output. The
Network Camera will show whether the trigger is activated or not.
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. 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 122 for detailed information.