Avision AV3200C - Manual (Page 40)

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The default parameters are used to adjust the image. You
can type values in the Color Levels text boxes or you can
drag the sliding arrow under the color.
Hue /Saturation /Lightness
Click on this button to adjust the hue, saturation, and
lightness of an image. This button is enabled when the Color
Adjustment button is selected. You can type values in the
text boxes or you can drag the sliding arrow under the each
item.
Hue—specify a value in the Hue box to adjust the hue up to
360° by clicking on the desired color on the color wheel or
selecting a setting on the drop-down menu.
Note that the level of intensity for a color simultaneously
changes when the hue adjustment is made.