Vivotek ST3402 - Manual (Page 78)

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clicking on the Pull Bar in the same x-axis position. That means the Playback system
will be shifted to the appointed time and shows the video in the displaying frame. The
dark regions in the histogram area means there is no media data existed in these
intervals. If you click on these regions, a warning message will pop up.
5.6
26B
Preview (Multiple Frame) Mode
You can enter the event Preview mode only if you have changed the playback method
selector to “Events Preview”. This can help you to identify the objects that triggered
the events, not only by the time information and the alert percentage in the histogram
area but also by playing the real video preview. This allows you to easily distinguish
between different alert situations. Under the Event Preview mode, the Pull Bar,
“Transducer” button in the exporting toolbox, and the Display Adjustment Toolbox are
disabled. The two labels under the Pull Bar show both the number of displayed
events and the total event count. There are nine frames in the display area that we
call one “page”. Each of the nine frames on each page displays a different video
sequence event. Each event displayed will be of at least 10 seconds in length. You
can use the “Page Up” and “Page Down” button in Page Control to browse the events
in the selected period, up to nine events per page. There is also page status informing
you the current page number and the total page count (as shown in
X
Figure 5-9
X
).