LT Security LTD831H6 - Manual (Page 18)

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Total space: indicates HDD total saving size.
Free space: indicates current HDD available saving space.
Useable REC time: As per current image detail/quality and frame rate, system will show to you how much time
you could continue to record.
Overwrite: When selecting “on”, that means system will auto-overwrite previous recording once HDD if full;
when selecting “off”, recording will stop once HDD is full
HDD Format: If HDD is used firstly, please do format the HDD in order to make DVR data safe.
Click [Format HDD] button to start formatting. When confirming HDD format, system will prompt you –
“Format HDD will loss all the data, do you confirm?” ; click “OK”, system will prompt you – “Is formatting…” and
“successful format”; and then system will be restarted automatically.
Format U flash disk: indicate format U flash disk data.
5.2.6.2 Alarm Set
HDD loss: include On and Off. If you open HDD loss alarm function, there are alarm sound and “H” sign on
screen when HDD loss, no format and invalidation; on the contrary, if you close the function, there is only “H” sign
to prompt HDD invalid, but have no alarm sound when HDD loss no format and invalidation.
HDD space: include On and Off. When the alarm function is on, there are alarm sounds once space is not
enough; when the function is off, there are no alarm sounds.
Video Loss: include On and Off. When the function is on, system will issue alarm sound and display video loss
on the preview interface; when the function is off, system will have no alarm sound, but the preview interface will
display video loss.
Alarm manage：Alarm Output（0s,10s,20s,40s,60s） 、 Buzzer time (0s,10s,20,40s,60s) and alarm duration time
（ 0s 、30s，1minute，2minute，5minute）.
Alarm Type Function
Video Loss
When DVR can’t receive video signal alarm (such as camera damage, cable broken or damage or
power supply malfunction).
Motion Detection
When an object moving to motion detection area, alarm will be triggered. You could adjust
sensitivity level as per actual application environment and moving object induction to
sensitivity
I/O Status System could convert alarm signal triggered by IR probe etc into signal identified by system.
HDD loss
When HDD invalidation (HDD damage, power supply malfunction), HDD auto-overwrite is off, and
free space is not enough, an alarm will be triggered.
List 5-1
Click [Main MenuDevice  Alarm] to enter into [Alarm
setup] menu and proceed parameter setting of Alarm Set (shown as
Picture 5-19).
I/O Status：Include NO (Normal-open), NC(Normal-close) and
off. When set to “Normal-open”, I/O status alarm are available once
sensor is connected; set to “Normal-close”, I/O status alarm are
available once sensor is disconnected; set to “off”, I/O status alarm
are unavailable.
Picture 5-19