247Security mDVR514M, Руководство пользователя

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5.5.7. MINIMUM AVAILABLE DISK SPACE (MB)
Minimum Available Disk Space notifies the mDVR514M that your recording storage device is running out
of disk space and to start overwriting earlier data. The value can range from 20MB to the maximum disk space
value. Let’s say you entered 100MB into this box, the mDVR514M records until it detects that you only have
another 100MB of available space on the recording media. The mDVR514M will intelligently perform a “ring –
recording” which means the mDVR514M will delete old video files that it doesn’t need, to free up space for new
video files.
The mDVR514M will ONLY delete video files that are NOT marked as Special Events triggered by the Event
Marker or the Programmable Sensors. These special video files are locked and NOT delete-able during the “ring-
recording” process. This method prevents important video files from being deleted. The mDVR514M begins
deleting the oldest files first. The same process is on-going until you have enough recording space.
5.5.8. EVENT MARKER
This drop down list will enable you to select which sensor to use for the event marker. The Event Marker
(Sensor 1) is the default sensor to be used with the included event marker cable unless there is a required custom
solution to use a different sensor.
5.5.9. PRE-LOCK TIME (S) & POST-LOCK TIME (S)
Pre-Lock Time (in seconds) defines how many seconds you want to include in the marked video event file
prior to the time that special event occurs. For instance, if the Event Marker Button was pressed at 12:00pm and
the Pre-Lock value was 60 then the marked video event file is generated to start at 11:59am exactly or a minute
prior to the “event time”.
Similarly, Post-Lock Time is the time that occurs after the “event time”. For instance a value of 60 entered
in Post-Lock will mark the file to stop at 12:01pm. Therefore, you have a marked video file that starts from
11:59am until 12:01pm. The mDVR514M allows the end-user to set the Pre-Lock and Post-Lock up to 600
seconds (10 Minutes). Values entered into these boxes are in seconds.