GeoVision GV-IPCAM User Manual page 267

IR Check Function: Note this option is only available for Box
Camera. This function determines whether the surveillance area is
illuminated by an externally installed infrared illuminator.
Off: The default setting. The infrared illuminator will be constantly
off. It is advisable to enable this option when the color temperature
of outdoor lighting is 6000 K or above.
On: The infrared illuminator will be constantly on.
Trigger by Input / Trigger IR by D/N: Select this option for the
infrared illuminator to turn on under low light and turn off under
sufficient light.
Note:
1. The D/N settings are not available for GV-BX140DW.
2. If an infrared illuminator is installed for outdoor surveillance, it is
suggested to use the Trigger by Input or the Trigger IR by D/N
function to avoid incorrect judgment of lighting and hence the action
of the IR cut filter. See 2.5.2 Infrared Illuminators.
3. If you select Trigger by Input / Trigger IR by D/N option, make
sure you have set D/N as Auto and configured its sensitivity level.
Auto Iris: Note this function is not supported in cameras with fixed
lens or fixed iris. The option is designed for auto iris lens (DC drive).
Enable the auto iris function when the scene appears fuzzy and the
Flicker Less function does not help to improve the situation.
BLC: Note this function is not supported by GV-BX140DW and GV-
PT110D. Select On to enable Backlight Compensation (BLC). This
function is used to adjust the color intensity of scenes with strong light
at the background.
Note: To access the BLC function in PTZ camera, see Other, 8.8.4
Image Settings.
Administrator Mode
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