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Circular Recording 2
In the Circular Recording 2 mode, when free memory space ends, recording contin-
ues over the oldest data. As a result, all the previous recordings will be deleted.
Recording with the Prehistory
When the recorder started recording after it got the command from sensors or tim-
ers (for instance, if the recorder is a part of a surveillance system), you would prob-
ably need the recording with something that preceded the command (Prehistory).
Use the Recording with Prehistory mode to resolve this problem.
First, choose one of the three recording modes as it is described above. Then use
the button to go to the Recording Settings and choose the Prehistory menu
item. After this you can choose among 4 options that are the durations of a record-
ing that would precede the command from a timer or a sensor. Choose the option
and confirm your choice by pressing the
button.
When the recorder’s switch is on, the recorder is in the Prehistory mode. The
recording is saved on the memory card the same way as it is in the Circular mode
while the recorder does not get the command from the sensors or timers. The
recording’s duration is equal to one that was set in the Prehistory menu. The re
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corder saves the newest information on the memory card over the oldest one until
the recorder gets the command from timers or sensors. After the recorder gets the
command, the recorder records the event that was cause of the command. So the
recorder’s memory card does not have the useless information.
Note: Pay attention that after the Recording with Prehistory mode is on, the function
of the recorder’s operating controls are changed slightly. In this mode, the switch is
used to turn on Prehistory recording while other controls start recording of the event
that is cause of the command from the timer or sensor.
