VIVOTEK Vivotek Automobile Electronics vc8201 ユーザーズマニュアル

 

 

The inclusive window refers to the “weighed window“; the exclusive window refers to “ignored window“. 

It adopts the weighed averages method to calculate the value. The inclusive windows have a higher 

priority. You can overlap these windows, and, if you place an exclusive window within a larger inclusive 

window, the exclusive part of the overlapped windows will be deducted from the inclusive window. An 

exposure value will then be calculated out of the remaining of the inclusive window.  

■ BLC (Back Light Compensation): This option will automatically add a “weighted region“ in the middle of 

the window and give the necessary light compensation.

Exposure control:

■ Exposure level: You can manually set the Exposure level, which ranges from -2.0 to +2.0 (dark to 

bright).

Include

Exclude

Include

Exclude

■ 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 specified. 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.   

You can click 

Restore to recall the original settings without incorporating the changes. When completed 

with the settings on this page, click 

Save to enable the settings.   

■ 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.  

  Click the 

Save button to preserve your configuration. 

■ Flickerless: This function helps avoid the flickering on images because of the fast shutter movement 

and the inconsistency between power line frequency (50 or 60Hz) and exposure time. When selected, 

the exposure time will be forced to stay longer than 1/120 second. For cameras that come with fixed 

iris lens, setting the exposure time to longer than 1/120 second may introduce too much lights to the 

lens. Users can use this option to observe whether the result of long exposure time is satisfactory.