Approach Tech DVR-3024M, DVR-3024MD manual Time Index Table, HD1

6.4 Time Index Table

HD1		HD1
1	12-02-03 12:20:55	1	12-02-03 12:20:55
2	12-02-03 13:30:33	2	01-30-04 16:00:34
3	01-30-04 16:00:34		:	3000
3000	:		:
Indexes				Indexes
	:		:
	:	2999	02-03-04 16:00:56
3000	02-03-04 16:00:56	3000	02-08-04 17:30:58

Previously recorded data overwritten

The point stops recording

Previously recorded data remaining

The DVR will generate a Time Index Table indicating recorded data is kept in a particular HDD. This allows the user to individually selecting recorded data to be displayed via the alarm list search and full list search. The maximum number of lists for a given HDD is 3000. When the list of any given HDD is used up and the disk is not full, the unit will still use the rest of the space for recording. In such a case, an index for the recent recorded data will be generated and the index of the next oldest data will be erased so that the list does remain 3000 in total. And the next oldest data will be kept in the index of the corresponding oldest

data. For any newly-recorded data, this approach will be applied until the disk becomes full.

In the rewrite recording mode, when the archived hard disk drive is full, the DVR will start overwriting the oldest data recorded. As the previous recorded data is being overwritten

by the recent recording, the indicating time index of that data will be changed corresponding to the starting time of the remaining session. The index of the session will be deleted from the table when it is fully overwritten.

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