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42 C695M-B (11/03)
SEARCHING VIDEO DURING CHANGE TO DAYLIGHT SAVING TIME
You must perform a special file search to view time files created during the switch to daylight saving time in the fall of the year. The unit
creates two time files, both marked with the same start and stop times. However, they contain totally different video images. Refer to
Figure 27, which illustrates both the problem and several solutions.
Figure 27. Searching DST Files
ᕡ The first line shows two time files, one (B) for the hour before the time change and one (C) for the hour after the time change. Both
are marked 1:00 a.m. to 2:00 a.m.
ᕢ The second line shows that any search from blocks A, B, C, or D identifies block C.
ᕣ The third line shows that you can search for block A, which is marked 12:00 a.m. to 1:00 a.m. Then play video forward past 1:00 a.m.
You can also search for block C and play video backward into block B.
NOTE: Block C cannot be accessed from a remote workstation using the DX3100RX software.
12:00 AM to
1:00 AM
12:00 AM to
1:00 AM
12:00 AM to
1:00 AM
1:00 AM to
2:00 AM
1:00 AM to
2:00 AM
1:00 AM to
2:00 AM
1:00 AM to
2:00 AM
1:00 AM to
2:00 AM
2:00 AM to
3:00 AM
2:00 AM to
3:00 AM
1:00 AM to
2:00 AM
2:00 AM to
3:00 AM
1HR
TIME FILE
1HR
TIME FILE
BEFORE DST
1HR
TIME FILE
AFTER DST
1HR
TIME FILE
DAYLIGHT SAVING TIME
(TWO FILES, SAME TIME)
A
B
C
D
CURRENT PLAYBACK TIME
RESULT OF SEARCH TAKES
YOU HERE
ᕡ
ᕣ
ᕢ