Vivotek IP7138, Руководство пользователя

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User's Manual - 61
An event is an action initiated by a user-defined trigger source; it is the causal arrangement of the
following three elements: Trigger, Event Schedule, and Action�
Trigger
This is the cause or stimulus which defines when to trigger the Network Camera. The trigger source can
be configured to use the Network Camera’s built-in motion detection mechanism or external digital input
devices�
There are several choices of trigger sources as shown below� Select the item to display the detailed
configuration options.
■ Video motion detection
This option makes use of the built-in motion detection mechanism as a trigger source� To enable this
function, you need to configure a Motion Detection window first. For more information, please refer to
Motion detection on page 54 for details�
■ Periodically
This option allows the Network Camera to trigger periodically for every other defined minute. Up to 999
minutes are allowed�
■ Digital input
This option allows the Network Camera to use an external digital input device or sensor as a trigger
source� Depending on your application, there are many choices of digital input devices on the market
which helps to detect changes in temperature, vibration, sound, and light, etc�
■ System boot
This option triggers the Network Camera when the power to the Network Camera is disconnected�
■ Recording notify
This option allows the Network Camera to trigger when the recording disk is full or when recording
starts to rewrite older data� If you want receive Recording notify message , please refer to page 70
for detailed information�