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Black level (g2) and sensitivity offset, Black level (g2) – JVC CB100 User Manual

Page 80

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Chapter 4—Setup Adjustments

4-28

Hughes-JVC Technology Corporation

To adjust XY Registration:

1. Access the G

EOMETRY MENU

.

2. Verify that the R

EG

E

NABLE

box is checked. This toggle is normally ON

and is toggled to OFFonly for maintenance.

3. Use the RGB

TOGGLE

and the H

IDE KEY

to hide Red and Blue.

4. If Green geometry is good, unhide Red and Blue.

O

R

if Green geometry is questionable, recheck it now.

a.

Use the Standard Crosshatch test pattern to verify.

b.

If geometry is not satisfactory, make touch-up corrections.

c.

Green geometry must be correct before proceeding because Green is
used as a reference to converge Red and Blue.

d.

If necessary, repeat any timing or geometry adjustments from Section 4.2
on page 4-9 and Section 4.3 on page 4-11

5. Access the T

EST

P

ATTERN MENU

and select RGB X-hatch. This test pattern is

a series of Red, Green, and Blue bars that form small rectangles on the
screen. The rectangles in Figure 4.0-15 show a Correctly Converged RGB
Pattern and Figure 4.0-16 illustrates Incorrectly Converged RGB Patterns
(two examples). If this is a black and white illustration, Red is shown as
white, Green as shaded, and Blue as black.

6. Access the C

ONVERGENCE MENU

and select R

EGISTRATION

. The convergence

screen will display one of the cursor modes shown in Figure 4.0-14.

7. Use

S

IZE MODE

first. If the M

OVE MODE

displays, press M

ODE

to toggle to the

S

IZE MODE

. If the A

DJUST MODE

displays, press E

NTER

to toggle to the

M

OVE

/S

IZE MODE

then, if necessary, press M

ODE

to toggle to the S

IZE MODE

.

8. Use the S

IZE MODE

to increase the cursor size to a full screen cursor.

To view a full screen cursor:

a.

Move the cursor to the center of the screen.

b.

Toggle the M

ODE KEY

to the M

OVE CURSOR

.

c.

Use the arrow keys to place the cursor at the center of the screen, then
toggle the M

ODE KEY

to return to the S

IZE MODE

.

d.

Continue to size the cursor to a full screen.

Figure 4.0-15 Correctly Converged RGB Pattern

Blue

Red

Green