Quantum-data 801GC Manuel d'utilisateur télécharger pdf (Page 49)

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101

4-11

BriteBox — contd.

Test Brightness uniformity

Purpose The light output of most picture tubes varies

slightly when measured across the CRT face. This

test can be used to verify that the light output

variation is within your spec limits.

Method Select the inverted version and perform the

Brightness Control Adjustment test on the center

box. Then center the light meter probe in each of

the corner squares and note the reading you get

for each square. The deviation between each of

the corner readings and the center reading should

be within your spec limits.

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Quantum-data 801GC Manuel d'utilisateur Page 49

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