Vicon VC2430B, Руководство по установке и эксплуатации

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④ Autoiris Lens Connector for DC Drive Lens
This connector supplies the control signals to the DC drive autoiris lens.
When using a DC drive lens, the ELC/ALC switch (pole 1) on the DIP switch must be set
to the ALC (OFF) position.
⑤ BLC (Backlight Compensation) ON/OFF Switch
If the subject you wish to view is too dim because of a bright background, set the BLC
switch (Pole 2) to ON to compensate for the bright background.
With BLC on, the background brightness may saturate in some cases. This
function may not operate properly if the object is too small compared to the area of the
background. This function can be used with either the linear shutter (EE or ELC mode)
or an autoiris lens (AI lens or ALC mode).
WITH BLC OFF WITH BLC ON
CONNECTORS AND CONTROLS