VIVOTEK
User's Manual - 87
■ Audio detection
A preset threshold can be congured with an external microphone as the trigger to system event. The
triggering condition can be an input exceeding or falling below a threshold. Audio detection can take
place as a complement to motion detection or as a method to detect activities not covered by the
camera's view. Please refer to page 101 Applications > Audio detection for more details.
Once you have a preset audio alarm level, you can dene the triggering condition either as an audio
input rises above or falls below the alarm level.
3. Action
Dene the actions to be performed by the Network Camera when a trigger is activated.
■ Trigger digital output for
seconds
Select this option to turn on the external digital output device when a trigger is activated. Specify the
length of the trigger interval in the text box.
■ Backup media if the network is disconnected
Select this option to backup media le on SD card if the network is disconnected. Please note that this
function will only be displayed after you set up the network storage (NAS). For more information about
how to set up network storage, please refer to page 106.
■ Move to preset location
Select a preset location you’ve configured. Note that please configure Preset locations first. For
detailed information, please refer to page 81~83. Another checkbox will appear, Capture media
after moving to the location. You can select to record associated snapshot, video clip or system
event once the event is triggered and the camera moves to the preset location. See Add Media in the
following discussion.
To set an event with recorded video or snapshots, it is necessary to configure the server and media
settings so that the Network Camera will know what action to take (such as which server to send the
media les to) when a trigger is activated.
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