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VIVOTEK
User's Manual - 59
■
AE Speed Adjustment:
This function applies when you need to monitor fast changing lighting conditions. For example,
the camera may need to monitor a highway lane or entrance of a parking area at night where
cars passing by with their lights on can bring fast changes in light levels. The same applies if
the camera is installed on a vehicle, and when it needs to adapts to fast changes of light when
entering and leaving a tunnel.
■
WDR:
This refers to the Wide Dynamic Range function that enables the camera to capture details in
a high contrast environment. Use the checkbox to enable the function, and use the slide bar
to select the strength of the WDR Pro functionality, depending on the lighting condition at the
installation site. You can select a higher effect when the contrast is high (between the shaded
area and the light behind the objects).
■ Iris adjustment: Use the pull bar to change the aperture size.
The preset iris aperture setting will
apply.
■
WDR Pro:
This refers to the Wide Dynamic Range function that enables the camera to capture details in
a high contrast environment. Use the checkbox to enable the function, and use the slide bar
to select the strength of the WDR Pro functionality, depending on the lighting condition at the
installation site. You can select a higher effect when the contrast is high (between the shaded
area and the light behind the objects).
- Flickerless:
Fixed iris models can encounter image rolling band issues when
operating under incongrous
power line frequency with uorescent lights. To solve the problem, the Flickerless mode can limit
the exposure time to 1/120 ~ 1/5 second. For the Auto iris models, when the exposure time is
limited to 1/120 ~1/5 second, iris size is automatically adjusted, and that the image brightness
is appropriately adjusted. Although the chance is rare, for Fixed iris models, when the exposure
time is limited to 1/120 ~ 1/5 second, they may encounter image over-exposure. If the Flickerless
option is selected, and users discover over-exposure from the live view, they can disable the
Flickerless option.
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