Vivotek IP3121 Specifications download pdf (Page 59)

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The other "Event operation" can be used to combine motion detection with devices attached to digital

input, to drive devices attached to digital output, or send out snapshots for evidence. It helps users

establish an easy security system. Administrators may choose any combination of conditions to form

special applications according to their personal needs. Network Camera will continuously monitor the

channel and digital input every half second. Once the user-defined conditions are matched, Network

Cameras will capture three stages of events and react based on the "Trigger action" settings. The

post-event snapshot can be configured to be delayed after events happen according to the setting in "Take

snapshot at seconds after event". The three stages of snapshots will be VPRE.JPG, VTRG.JPG and

VPOS.JPG. Since the same event may exist for a while, administrators can set delay time in "Delay

seconds before detecting next event" to reduce multiple triggers by the same event.

There are two kinds of "Trigger condition". For digital input there are four options provided to combine

with the user's device. Rising and falling will make events happen once. For motion detection, there are

window names shown below as choices. Refer to the previous section for configuring motion detection.

Note that larger object size and lower sensitivity will make it more difficult for Network Camera to detect

varied images. Once the "Trigger condition" is matched, Network Camera will drive the digital output

device and/or upload snapshots based on the "Trigger action" settings. The application settings should be

carefully examined to operate accurately. If administrators are not sure of the digital output status before

configuring applications, "Reset output" can be used to return the digital output to the default “Normal

Close” state.

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Vivotek IP3121 Specifications Page 59