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980 DP 1.4 Video Generator / Analyzer - User Guide
Rev. A1
3 : 4
0.750
14
10
16
12
32
24
16.85.2Test
Convergence adjustment (color monitors only).
16.85.3Purpose
To accurately produce an image on a color monitor, the three electron beams in the CRT must meet (converge) at
the same location at the same time. Lines displayed on a misconverged monitor appear as several multi-colored
lines, and the transitions between different colored areas contain fringes of other colors.
16.85.4Method
The convergence adjustments of most color monitors fall into two main categories. The first set of adjustments,
usually called Static Convergence, aligns the three beams in the center of the display. This method involves turning
on all three guns and adjusting the various magnets on the convergence assembly to produce all white dots in the
center of the display. The convergence assembly is located on the neck of the CRT. Different monitors and CRT
types may each require their own magnet adjustment sequence.
After the center of the display is properly converged, the outer areas are adjusted by using the monitor's Dynamic
Convergence controls. The number of controls, the area of the screen they affect, and their adjustment procedure
depends on the monitor under test.
Page 396
June 16, 2017
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