VIVOTEK
120 - 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 define the "Normal status" for the digital input. The Network
Camera will report the current status�
Digital output
: Select Grounded or Open to define the "Normal status" 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� 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 127 for detailed information�
