ViewSonic CDE5561T User Manual page 28

Screen Setting
1. Click the Auto icon directly to do the auto adjust.
Click the 4:3 and 16:9 icons directly to change the ratio.
2.
Display Setting
1. Turn the Brightness, Contrast, Hue and Sharpness icons directly with touch pen
to adjust value. Or press DOWN / UP / LEFT/ RIGHT to select icon then press
VOL+/VOL- to adjust value.
Click the Warm, Standard and Cold icons directly to change the display efficacy.
2.
Drag icon directly with touch pen to adjust the blue light value.
3.
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