Chapter 4—Setup Adjustments

4.6. Convergence (XY Registration)

Convergence (XY Registration) overlays the CRT beams onto each other.

XY Registration procedures are required to align the Red, Blue, and Green CRT beams together on the screen.

NOTE: For a better understanding of what is being accomplished, take the time now to read the entire Convergence (XY Registration) section before making any adjustments.

4.6.1.Purpose of Convergence

The XY Convergence adjustments are used to converge or overlay the Red, Green and Blue CRT images over the entire screen area. The HJT Model 100 Projector handles many different sources and convergence is tied directly to a video source. One (1) channel can contain up to 20 different sources with different formats. Each of these sources must have its own set of convergence data.

4.6.2.Cursor Shapes and Sizes

Three (3) different cursor modes (as described in Table 4.0-3) are used to make adjustments.

Table 4.0-3 Cursor Modes

Cursor Mode

Description

 

 

Move

Moves the cursor around the screen.

 

 

Size

Increases or decreases the cursor size.

 

 

Adjust

Makes the actual convergence adjustments.

 

 

Various cursor sizes are available to adjust areas. Some areas may require odd shaped cursors. If a long thin area appears out of convergence, use a long thin cursor shaped like the area. Use the cursor size that best fits the area. Some areas may be satisfactory and will not need any convergence corrections.

The greatest convergence corrections are made at the center of the cursor— avoid making corrections at the edges of the cursor. Move the center of the cursor over the area that needs correcting. A cursor with a long centerline is affected equally all along its centerline by the adjustments.

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Hughes-JVC Technology Corporation

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JVC CB100 manual Convergence XY Registration, Purpose of Convergence, Cursor Shapes and Sizes, Cursor Modes
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CB100 specifications

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