D-Link DCS-2000 Manual page 81

Since the program will record the previous start and end time in "Time Period"
and "Events Preview" mode. Any time you want to change the period selector
to see another period, you must change the Playback Method Selector to the
mode you want to use first. Otherwise, the Period Selector will back to the
previous data when you change the Playback Method Selector.
Alert Area Selector
In the Preview Mode, the Playback program only can show the total events
information of one alert window each time. If you want to see the events of the
other two alert area windows, you must change the alert area selector to other
numbers. In the normal display mode, the alert window that the alert area selector
indicates will be highlighted with red rectangle if you checked that window in
the settings dialog. The alert area selector will be changed to alert window
zero, when you change the location selector to another one.
Play Control
Speed Indicator
For the play control, a jog dial is used to provide the easiest way to control the
displaying video sequence. Except the "Play" button, all other buttons can control
the displaying frame in the normal display mode and the selected displaying
frame in the preview mode.
Play
The "Play" button is an intelligent play interface. The functiony of this button
can vary to fit with different circumstance. In the normal display mode,
click on the "Play" button can restart the displaying video sequence. When
in the preview mode, if you don't change the data of period selector, clicking
on this button only restarts the selected displaying frame. If the data of the
period selector has been changed, clicking on the "Play" button will restart
all frames to display the first nine events in the new period.
Play
Pause
Step Forward
Stop
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