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980 DP 1.4 Video Generator / Analyzer - User Guide
Rev. A1
16.21 BriteBox
16.21.1Description
The primary version has a single white box in the center of active video. The box size is controlled by the MSIZ
system parameter. The secondary version adds four boxes in the corners of active video.
16.21.2Test
Brightness control adjustment.
16.21.3Purpose
The wrong brightness setting may cause other tests such as Contrast, Focus, and Beam Size to be invalid. An
accurate brightness setting helps give repeatable measurements throughout other tests.
16.21.4Method
Center your light meter probe within the center square and adjust the monitor's brightness control to obtain the
required light meter reading.
16.21.5Test
Brightness uniformity.
16.21.6Purpose
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 specification limits.
16.21.7Method
Page 329
June 16, 2017
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