User's Manual

G4 DVR-M1N-RPH User Manual
Page 75 of 112
1) Trigger: You can choose High or Low level, and it is High by default.
2) Effective Time: a time period during which a cleared alarm is triggered again. Alarms
triggered in this period are considered the same.
For example: A motion detection alarm is triggered at 13:23:30 and cleared at 13:23:50. If the
effective time is set to 10 seconds, and a motion detection alarm is triggered within 10
seconds, the two motion detection alarms are considered to be the same alarm, and are
recorded in the alarm log as one. The alarm linkage will not stop until the subsequent motion
detection is canceled.
x Linkage: The services that can be linked when an alarm occurs. Tap Setup to enter the
following screen:
1) Channel: The channel that needs to be recorded after an alarm is triggered. The
recording of these channels will be marked as alarm recording. Pre-Recording: In
alarm recording, recording files generated before the linkage alarm are extracted for
event analysis. The value ranges from 0 to 60 minutes and is 15 minutes by default.
2) Post Recording: The time for the video to continue when the alarm is cleared.