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I/O CHANNEL
：
：：
：
Each channel corresponds an I/O status, that is, when an alarm triggered, it will
activate the corresponding channel to start alarm recording.
N.O
：
indicate I / O input level from high to low effective
N.C
：
indicate I / O input level from low to high effective
HDD LOSS
：
：：
：
ON means it will trigger a alarm if there is no HDD, and it will display an
【
H
】
On the bottom left of channel 1 in the live view
HDD SPACE
：
：：
：
ON
：
If the space less than 500M, there is a remark in live view
：
No enough space,
please change HDD after shutdown.
VIDEO LOSS
：
：：
：
ON
：
when one channel has no video input, it will display “video loss”in live view.
ALARM MANAGE
：
：：
：
There are alarm output, buzzer and post REC three items.
OUTPUT
：
when an alarm triggered, the alarm output time will be:
0 second
、
10 seconds,20 seconds,40 seconds and 60 seconds
●
BUZZER
：
buzzer calling time setup when alarm triggered: 0 second,10
seconds,20 seconds,40 seconds and 60 seconds
●
POST REC.
：
post recording time setup: 30 seconds,1 minute,2 minutes and 5
minutes
●
PRE REC
：
Pre-recording time is fixed as10 seconds.
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