DVR User’s Manual
23
Data Lifetime Mode
This item allows the user to choose preferred data lifetime mode. There are
three types of data lifetime mode: General, By Day, and By Channel. When a
specific mode is selected, further settings of the other two items below will be
grayed out and cannot be accessed.
Data Lifetime
When data lifetime mode is set as <General>, this item will be accessible.
Press ENTER to select this item and press UP / DOWN keys to set the data
lifetime. The value ranges from <1> to <365> days. Alternatively, select <0>
to disable this function.
Data Lifetime By Day
When data lifetime mode is set as <By Day>, this item will be accessible.
Enter this menu and users can setup data lifetime of each weekday
independently. The value ranges from <1> to <365> days. Alternatively, select
<0> to disable this function.
Data Lifetime By Channel
When data lifetime mode is set as <By Channel>, this item will be accessible.
Enter this menu and users can setup data lifetime of each channel
independently. The value ranges from <1> to <365> days. Alternatively, select
<0> to disable this function.
3.5.5
Pre-Alarm Recording
This item is for setting recording duration of pre-alarm video. The pre-alarm
recording function aims to allow users to playback a complete event video.
Users can playback not only the video recorded after the alarm is triggered,
but also the video recorded few seconds before the alarm is triggered.
When an event is triggered while normal recording is in effect, the unit will
start copying the pre-alarm and the post-alarm video to the event video. The
pre-alarm duration can be set from 0~70 seconds.
The quality of the pre-alarm video is the same as the quality setting for normal
record video; and the quality of the post-alarm video is the same as the
quality setting for event record video.
