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It is to set alarm events. It includes alarm settings, video detect settings, abnormal event settings
and alarm input and output.
4.3.4.1 Alarm
It is to set local alarm trigger mode and activation operations. When there is the local alarm,
device can generate an alarm and trigger the corresponding operations. The local alarm refers to
the alarm signal system detects from the alarm input port.
Step 1 From Main menu->Setting->Event->Alarm,
Enter alarm interface See Figure 4-69 and Figure 4-70.
Step 2 Set event type as local alarm.
Step 3 Select alarm input channel and check the box to enable alarm function.
Step 4 Set parameters.
Type: Normal open or normal close. This item is for local alarm only.
The normal open means the alarm signal is usually disconnect, system can
generate an alarm when the alarm signal closed.
The normal close means the alarm signal is usually connect, system can
generate an alarm when the alarm signal disconnected.
Trigger: Here is for you to set activation mode. There are two options: High/low.
Select high if the alarm signal is 12V/24V voltage. Select low if the alarm signal is
the GND.
Alarm name: You can input customized name here.
Overlay: Please highlight the box here to enable this function. It can overlay alarm
information on the video screen when an alarm occurred.
Anti-dither: Here you can set anti-dither time. The value ranges from 5 to 600s. The
anti-dither time refers to the alarm signal lasts time. It can be seem as the alarm
signal activation stays such as the buzzer, tour, PTZ activation, snapshot, channel
record. The stay time here does not include the latch time. During the alarm process,
the alarm signal can begin an anti-dither time if system detects the local alarm again.
The screen prompt, alarm upload, email and etc will not be activated. For example,
if you set the anti-dither time as 10 second, you can see the each activation may
last 10s if the local alarm is activated. During the process, if system detects another
local alarm signal at the fifth second, the buzzer, tour, PTZ
activation, snapshot,
record channel will begin another 10s while the screen prompt, alarm upload, email
will not be activated again. After 10s, if system detects another alarm signal, it can
generate an alarm since the anti-dither time is out.
Alarm output: The number here is the device alarm output port. You can select the
corresponding ports(s) so that system can activate the corresponding alarm
device(s) when an alarm occurred.
Latch: When the anti-dither time ended, the channel alarm you select in the alarm
output may last the specified period. The value ranges from 1 to 300 seconds. This
function is not for other alarm activation operations. The latch is still valid even you
disable the alarm event function directly.
Show message: System can pop up a message to alarm you in the local host
screen if you enabled this function.
Alarm upload: System can upload the alarm signal to the network (including alarm
center and the WEB) if you enabled current function. System only uploads the alarm