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3.21 Alarm Setting
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DVR supports 3 alarm sensors.
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Trigger Level: If the trigger level is set to high, high level voltage on the sensor will trigger an
alarm. You can check the “Trouble Shooting” on P33 for the definition of high level and low level.
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User can set up the alarm recording triggered by these sensors.
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Alarm OSD: The title that user would like to display on the screen and be recorded with video.
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Alarm Buzzer: Enable/Disable buzzer when an alarm is triggered.
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Switch View: Choose one camera to be in full screen mode when there is an alarm triggered.
This can be used for rear view full screen or side view full screen. For example, user can connect
sensor 1 to reverse signal, if camera 1 is the rear view camera, we can set the “switch view” for
sensor 1 to camera 1. When the vehicle is reversing, camera 1 will be displayed full screen on the
monitor.
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Switch View Delay: The DVR will keep switching the camera until the alarm is not triggered for
specified delay time. This is useful for side view camera. For example, if the left side camera is
camera 2, user connects sensor 2 to the left light signal. When the driver is switching to left light,
the sensor 2 alarm will be triggered. Note: Usually the left light will not be always on, it will be
blinking like on, off, on, off...Same as the sensor 2 alarm, it will also be on, off, on, off... In this
case, we can set “Switch View Delay” for 5 seconds (for an example) for sensor 2, set “Switch
view” for sensor 2 to camera 2, then the DVR will keep camera 2 in full screen mode until the
sensor 2 alarm is off for over 5 seconds.
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Pre-Record Time: The time that DVR will keep for recording before an alarm is triggered.
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Post-Record Time: The time that DVR will keep for recording after an alarm is triggered.
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All of the alarm record files will be kept in a separate alarm folder. The files in the folder will not
be overwritten.
