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C3432M-G (4/09) 25
SW4-4: Flickerless
In certain lighting conditions, a flicker in the light source may affect camera operation. Flickering can be
caused by a number of conditions, including the quality of the source power and the age and type of
fluorescent bulbs and ballasts.
Set SW4-4 to ON to enable flickerless operation. The camera will remove the effects of flickering when
present. The shutter speed will be set to 1/120 (NTSC) or 1/100 (PAL).
Set it to OFF to disable flickerless operation. This is the default setting.
NOTE: If you enable flickerless operation, you should use AC line lock for best results.
SW4-5: Auto White Balance/Manual White Balance
Auto white balance (AWB) is enabled by default (OFF).
To manually set and lock the white balance:
1. Set SW4-5 to OFF.
2. Hold a white background in front of the lens until the video shows all white.
3. While holding the background in place, set SW4-5 to ON. A blue blinking block appears on the video
image for a few seconds. When the block changes to solid green, the manual white balance (MWB)
process is complete.
SW4-6: Reserved
Do not change SW4-6 from its factory setting. SW4-6 must be set to OFF for Varifocal models; it must be
set to ON for fixed iris lenses.
BLEMISH DETECTION
If small white or color spots appear in the video image, one or more pixels on the camera imager may be
defective. (This condition is common for both CCD and CMOS imagers.)
DN and CH Series cameras with auto iris lenses automatically detect and correct defective pixels during
startup. Video turns on, then off, and then on again. If white or color spots still appear, you can correct the
defective pixels manually.
CH Series cameras with fixed iris lenses do not automatically detect and correct defective pixels. You can
correct the defective pixels manually.
To manually correct defective pixels:
1. Cover the lens completely. Make sure no light can enter the lens.
NOTE: The mechanical iris lens aperture does not completely block the light.
2. Press and hold button SW3 for one second. The camera will find and correct defective pixels.
NOTE: Any defective pixels that cannot be completely corrected may still appear.
3. Release button SW3.
4. Uncover the lens for normal camera operation.