|
2 - 262.5.1.8 Picture distortionWhen the picture distortion is measured, each distortion of the preset timing must be less thanthe following values.4-corner section distortionInspect the distortion at the four corners.• Signal, H character with frame (both normal/reverse)Item Inspect the following items for the picture distortion.No. Judgement reference value Input signal1.x 1pitch(=0.3mm)H characterwith frame(both normal/reverse)Left/rightdistortionTop/bottomdistortion2.3.x 0.6mm* Notey 1.0mmCrosshatchpatterna. x 1.0mmb. x 1.5mm ( * )xxy50mmxxH linePer 50mmScaleWithinn mmV lineSet scale to V lineEnlargedInner distortionVertical line Xmeasurement method• Distortion x of S-characterdistortion, etc.:Distortion excluding normal pin,barrel or trapezoid.Note:There must be no sea-gull distortion.• Distortion y:High frequency distortionexcluding trapezoid.4-edge distortionWhen S-character or seagull type high frequency distortionis visible, check with the following method.• Distortion x:a. Center lineb. Curve of other vertical line• Distortion x:Curve within50mm range• Distortion x:a. Center lineb. Curve of other verticalline• Distortion x:Distortion in the range of one Hcharacter height.Judge with the white display G.(Judge the distortion amount witha fluorescent material stripe.)(*) Present No. 1(31.5kHz, 60Hz) is:a. x 1.5mmb. x 2.0mmxWhen Fh < 61kHz,total area : less than 0.9mm.When Fh 61kHz,center : less than 0.6mm,peripheral : less than 0.9mm.
|
