EverFocus NDVR, User Manual, Page: 63 / 152

NVR/DVR/Hybrid NDVR System
- 62 -
4.1.8 Camera Event - Lose Focus
This function alarms you when any of the cameras is losing focus and has blur image.
Alarm Event Option:
Sensitivity: Click and move the slider control to the right to increase sensitivity so that a relatively small
movement will trigger the alarm. Move the bar to the left to reduce the sensitivity of movement
detection. Set up an appropriate Sensitivity value will reduce the chance of false alarm. For example,
you can lower the Sensitivity to avoid the alarm being triggered by a swinging tree in the breeze.
Interval: Click and move the slider control to the right to increase interval time so that the alarm will only
be triggered when the movement lasts longer. Move to the left to reduce the interval time.
Ignore Lighting: Check the box to avoid alarm being set off by light changing.
Region Definition:
Define detection zone: To detect Lose Focus, you have to define a detection zone. Left-click and drag
the mouse to draw a detection zone. You may define more than one zone on the screen by repeating
the same process. User can also click on “All” button to select the entire detection zone.
Start Simulation: Click the Start Simulation button and test the function on the preview screen.
4.1.9 Camera Event - Camera Occlusion
This function alarms you when any of the cameras are blocked.
Sensitivity
Interval
Ignore Lighting
Start Simulation
Sensitivity
Interval
Ignore Lighting
Start Simulation