D-Link DCS-5300 - Manual (Page 85)

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Histogram Area
Location Selector
The location selector is a control that lets you select the camera you want to
see. The location information is the same as the location specified in the monitor
program (see Global Settings in the Monitor program section). If there is
more than one database in the same location, another dialog will appear (see
below). You must select an interval in that dialog. The Playback program will
automatically switch to that camera and start displaying.
Playback Program (continued)
Using IP surveillance Software (continued)
The Histogram Area in the Preview Mode displays events that occurred
previously as red bars, which represent the time and value of the event. Currently
displayed events are represented by green bars and the selected event with
blue bars. If you want to access the histogram area, you must change the Area
Selection Indicator to the Histogram Area. You can select a color-inverted
region by dragging your mouse with the left button pressed.
When you release the left button, the color-inverted region will be enlarged to
the whole Histogram Area. This color-inverted region will be the new period
the program is going to display. If you change your mind and don’t want to see
that period, you can cancel it by just pressing the right button of your mouse
with the left button still pressed. If you click on the left button without dragging
it, the display area will show the event page closest to the point you select. The
dark region means there is no video sequence in that interval. If you click on
these dark regions a warning dialog will appear to inform there is no video
sequence available.
Selector tools
Location selector
Period selector
Playback method selector
Alert area selector