Optiview HDVR4/8/16-Q2 User Manual page 267

5.8.3.2.1 Tripwire
Note:
The tripwire function is valid once your network camera or your DVR supports this
function.
If your purchased DVR supports the tripwire function, it supports one analog channel.
It is not for the digital channel.
From main menu->Setup->Event->IVS->Tripwire, you can see the following interface. See
Figure 5-67.
System generates an alarm once there is any object crossing the tripwire in the specified
direction.
Figure 5-66
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