VPort 25 User’s Manual
Introduction
1-8
DC Auto Iris Switch
The DC Auto Iris Switch is used to adjust the brightness of the camera image. Turn the switch
counterclockwise to achieve a brightener video image, and turn it clockwise to make the image
less bright. In addition, we suggest adjusting the Auto Iris switch with a 0.4 x 2.0 mm ceramic
adjuster.
NOTE: Before adjusting the Iris, make sure the AE (see SW-1 below) is OFF.
Switch
Definition
Remarks
1 AI_AE Auto
Iris,
Auto
Exposure
2 AGC
Auto
Gain
Control
3
BLC
Back Light Compensation
4 FLS
Flickerless
Mode
5 MIRROR Mirror
Function
6 GAMMA Gamma
Correction
7, 8, 9, 10
Reserved
SW-1: AI_AE (Auto Iris, Auto Exposure)
In order to create a consistent video output level, in AE mode the camera’s exposure and AGC
control circuits work together to compensate for the light exposure of the CCD sensor
automatically.
ON: AE-Auto Exposure mode
OFF: AI-Auto Iris mode (Default)
NOTE:
When AE is switched on, the Iris is fixed.
SW-2: AGC (Auto Gain Control)
AGC improves camera sensitivity and provides a clear image for low illumination conditions.
ON: Activate the AGC mode and Enable the Day/Night Function (Default)
OFF: Disable the AGC mode and the Day/Night Function
NOTE:
When Auto Iris is activated, AGC will be disabled.
SW-3: BLC (Back Light Compensation)
The BLC function solves the problem of backlight scene by brightening the foreground object.
ON: Activate the BLC function
OFF: Disable the BLC function (Default)
SW-4: FLS (Flickerless Mode)
When the power supply frequency is different from the camera’s, image flicker may occur.
Activating Flickerless mode can help remove flicker.
ON: Activate Flickerless mode
OFF: Disable the mode (Default)
NOTE:
If Flickerless mode is switched on, the shutter will be fixed (1/100 for NTSC, 1/120 for
PAL)
