Vivotek Automobile Electronics Vivotek Automobile Electronics User Manual

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VIVOTEK
User's Manual - 51
Exposure control:
■
Exposure level: You can manually set the Exposure level, which ranges from -2.0 to +2.0 (dark to
bright)�
■
Exposure mode: (Available for IP8173H using a DC-iris lens) - Select Auto or Manual mode
according to your needs�
Auto: If you set Exposure mode as Auto, the Exposure time and Gain control will not be
congurable since the sensor library will automatically adjust the value according to the ambient
light. Then you can congure iris mode as “indoor” or “outdoor” to reach the best image quality�
Manual: Select Manual mode to set an iris aperture size, xed exposure time, and gain. Then,
tune the slide bar pointers to congure an optimal image quality. A shorter exposure time allows
less amount of light to enter the sensor; while a higher gain control value generates certain
amount of noises�
• Exposure time: you can split the round pointers on the Exposure time and Gain control
slide bars into two halves and drag them on the bars to designate a range of values in which
firmware can automatically adapt to� Note that Firmware will then automatically tune the
Gain, Exposure time, and Iris opening within the ranges you specied. For example, in low-
light condition, you may prefer a longer exposure time and more electronic gains� However,
the noises in the image will also increase�
• Gain control: Tune the slider bar to set the Gain Control to the best image quality. Higher
gain control value will generate a certain amount of noises, and that the gain control, lighting
levels, and picture performance are closely related�
■ Flickerless
: (for IP8173H using a xed lens) This function helps avoid the ickering on images
because of the fast shutter movement� When selected, the exposure time will be forced to stay
longer than 1/120 second�
Click the Save button to preserve your conguration.
■ BLC (Back Light Compensation): This option allows you to use the center of the current view
as the measuring area� The measuring window refers to “weighted window“ where the lighting
condition within the particular area is taken into account� Camera firmware then adopts the
weighted averages method to calculate the value and provides necessary light compensation�
■
WDR (Wide Dynamic Range) Pro: Default is on. When set to Auto, you can select the sensitivity
and strength of the WDR function� The Low, Medium, High options correspond to the level of
contrast between the overly-lit area and the shaded areas� For example, the High option applies
to a high contrast scenario�

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