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RLS W12 02/12/2014
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8.Image
8.9 Timings
H Total
Press to adjust the horizontal total.
Use this function to adjust the clock frequency of pixel sampling (horizontal pixel frequency of the analog input source
generated by the ADC). If you notice flickering or vertical lines in the image, it means that the pixel sampling frequency is
insufficient. You can use this function to adjust the frequency to achieve consistent image quality.
The following image is an example of test image from an external signal source:
Adjust image quality by changing the
value of horizontal total to smoothen
the image.
In order to adjust timings the pattern should be used is pixel (on/off)
H Start
Use to adjust the projected image’s horizontal position.
If the projected image is not at the center of the screen (i.e. shifted to right or left) and ends up being cropped, use this function
to adjust the image’s horizontal position. The following image is an example of test image from an external signal source:
Native picture Skewed left
Skewed right
V Phase
Use to adjust the projected image’s phase.
Use this function to adjust the phase of pixel sampling clock (relative to input signal). Should the image still flicker or show
noise (i.e. edges on texts) after optimization, adjust phase accordingly.
V Start
Use to adjust the projected image’s vertical position.
If the projected image is not at the center of the screen (i.e. shifted up or down) and ends up being cropped, use this function
to adjust the image’s vertical position. The following image is an example of test image from an external signal source:
原始圖面 圖面下偏
圖面上偏
Native picture
Skewed down
Skewed Up
It is recommended that when adjusting the image, the horizontal total should be adjusted before the
horizontal phase. However, if the image still flickers even after you have adjusted both, try lowering the
image noise.