Quantum-data 802BT Bedienungsanleitung PDF herunterladen (Seite 661)

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802BT/802R Video Test Generator User Guide 651

Test Convergence adjustment (color monitors only)

Purpose 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.

Method 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 depend on the monitor under test.

Hatch_16, Hatch_20

Description The primary version of the Hatch_16 image is shown below. The secondary versions draw

black lines on a white background.

1 : 1

1.000 10 10 12 12 24 24

3 : 4

0.750 14 10 16 12 32 24

Aspect Ratio Dot_10 Dot_12 Dot_24

1 2 ... 656 657 658 659 660 661 662 663 664 665 666 ... 743 744

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