User`s manual

VPort 2140 User’s Manual System Configuration
4-10
Motion Detection
Each channel has its own separate motion detection settings. The settings, which include Object
size and Sensitivity, allow administrators to fine tune the VPort to fit the environment:
1. Object size sets the minimum size of objects whose motion will be detected. (E.g., if Object
size = 30%, then the system will only detect the motion of objects that occupy an area larger
than 30% of the total monitored area; the motion of objects with size less than 30% of the
monitored area will NOT be detected.)
2. Sensitivity sets the measurable difference between two sequential images to indicate motion.
A larger object size and lower sensitivity will cause the VPort to ignore small variations in images.
When the motion amplitude of some objects in the monitored screen exceeds the settings, a white
letter M with red background color will appear in the upper-right corner to the window.
ATTENTION
Motion detection is provided as a reference because it is environment-dependent. When the
settings are configured to be very sensitive to motion, some triggered events might be false
alarms, since in fact there is only a tiny difference between sequential images. False alarms can
be triggered by the flashing of florescent lights, shifting of shadows, etc.
Before completing the Video configuration, 3 items need to be confirmed.
Modulation
There are 3 types of Modulation. Administrators can set the auto-detected condition during
initialization by selecting Auto, but can still set it manually by selecting NTSC or PAL. When
you change the camera modulation, a warning message will pop up to inform you that the system
will restart to validate the new modulation.
ATTENTION
Although the analog cameras have 2 different standards, NTSC or PAL, all of the cameras
connected to VPort 2140 Video Server should use the same standard.