Pelco Manual C680M-G (7/01) 19

STOP PLAYBACK
To stop playback:
Press the Stop button. Playback stops and recording resumes if the DVR is programmed for
automatic recording. Live video appears on the monitor if the Preview feature is turned on.
PLAYBACK FOLLOWING TIME CHANGES
The DVR uses the time and date to index video on the hard disk drive so you can find it
later. Changing the time can cause the DVR to work improperly when you try to play back
video. If you set the hour ahead, this is not a problem. But if you set the hour back, there
will be more than one recording at the same time.
Figure 4 shows what happens when you set the hour back from 2 a.m. to 1 a.m., such as
during the October Daylight Saving Time changeover. If you try to search for video between
1 a.m. and 2 a.m., the recorder may not operate properly because there will be two hours
of recorded video during this time period. To view video during this overlapping time period,
you must start playback before 1 a.m.; then the recorder will play both hours between 1
a.m. and 2 a.m., as shown in Figure 4.
You cannot do a backward search through the overlapping time period. You can, however,
do a forward search.
2400 0100 0200 0300
RECORDING WHEN HOUR IS SET BACK
2400 0100
0100/
0200 0200 0300
PLAYBACK WHEN HOUR IS SET BACK

Figure 4. Recording and Playback When Hour Is Set Back

POWER FAILURE
In the event of a power failure, the DVR has battery backup to save the time and date and
menu settings. The battery is good for three years.