JVC CB100 4.8. Uniformity (Shading)

Chapter 4—Setup Adjustments

4-32 Hughes-JVC Technology Corporation

NOTE: Threshold Offset can be viewed as the fine adjustment for

Black Level (G2).

3. Repeat the Sensitivity and Threshold Offset adjustments to obtain a

Grey/Pluge pattern where the small, black and small, white square

are just barely visible inside their larger squares.

Repeat the above Black Level, Sensitivity Offset and Threshold Offset

adjustments for Green and Red.

4.8. Uniformity (Shading)

Uniformity adjustments correct inconsistencies and brightness differences in the

CRT and ILA® assemblies.

4.8.1. Sensitivity Uniformity

Sensitivity sets the brightness at high (white) video levels. Performed

one color at a time, this adjustment gets a flat, uniform brightness in the

white areas.

To adjust the Sensitivity for Blue:

1. Darken the room as much as possible.

2. Use the RGB and HIDE KEYS to hide R and G. Verify that the

SHUTTERS ON HIDE box under the SYSTEMS-PREFERENCES MENU is

checked.

3. Toggle the RGB KEY to select B only.

4. Access VARIABLE FLAT from the TEST PATTERN MENU.

5. Use the arrow keys and select a Flat Field level of about 160.

6. Access the

CONVERGENCE MENU and select SENSITIVITY. The

Sensitivity cursor and a window are displayed. The sensitivity level’s

data value for the entire screen is displayed—this value is the reset

value of 128 plus or minus the amount of offset from the previous

adjustment.

7. Observe the center of the Flat Field screen. This is the brightest area

of the screen—it is used as a reference to match the rest of the

screen. Avoid overlapping this reference area with the cursor when

adjusting or the reference brightness level could change.

8. Select a 12 X 12 cursor as shown in the cursor size window.

9. Toggle the MODE KEY to the MOVE CURSOR. Move the cursor to an

area of the screen that is not as bright as the reference area

observed in Step 7.

10. Press ENTER to display the ADJUSTMENT CURSOR.

11. Use the arrow keys to bring the darker areas of the screen up to

match the reference area. Avoid making adjustments at the edges of

the cursor. Move the center of the cursor over the area that needs to

be adjusted.

12. Obtain the best possible uniformity over the entire screen, then repeat

Steps 9 - 11 with an 8 X 8 cursor.

Contents

Main DECLARATION OF CONFORMITY Table of Contents Safety Information Chapter 1. Introduction Chapter 2. Installation Chapter 3. Operation Chapter 4. Setup Adjustments Page Page Safety Information 0.1. Warnings and Cautions WARNING SYMBOL Warns user of a potential CAUTION SYMBOL W arns user of a potential 0.2. Installation Safeguards 0.3. Heat Safeguards 0.3.1. Fans and Ventilation 0.4. Light Safeguards 0.5. Electrical Safeguards 0.5.1. Power Supply Page 1.0 Introduction Page 1.1. Shipping and Inspection 1.2. Items Shipped with the HJT Model 100 Projector 1.3. Options 1.4. Projector Control 1.5. Right and Left Orientation Table 1.0-1 Acronyms Used In Manual Page 2.0 2.1. Air Flow and Maintenance Clearances 2.1.1. Air Flow Table 2.0-1 Air Flow Clearances 2.1.2. Maintenance Access 2.2. Physical Dimensions Figure 2.0-1 Top View M100 Projector (dimensions in mm) Page Figure 2.0-4 Front View M100 Projector (dimensions in mm) 2.3. Projector Orientation 2.4. Projector-to-Screen Distance and Alignment 2.5. Lens Throw Distance and Screen Width Table 2.0-3 Lens Definitions Table 2.0-4 Throw Distance Calculation Figure 2.0-7 Throw Distance vs Screen Width Illustration (3:1, 1:1 lenses) Figure 2.0-8 Lens Pattern for Model 100 2.6. Power Requirements Table 2.0-5 Power Sources 2.7. Signal Sources Connection Figure 2.0-9 Standard RGBHV and Optional HDTV Input Connections 2.7.1. Terminal or Remote Control 2.7.2. Infrared (IR) Windows 2.8. Sources 2.8.1. Types of Standard Composite Signals Table 2.0-6 Standard Composite Signals 2.8.2. Red, Green and Blue Analog Signals 2.8.2.1. Signal Inputs Page 3.0 Operation 3.1. Executive Remote Page 3.2. Technician Remote Page Chapter 2Installation HJT Model 100 User's Guide 3-5 Table 3.0-1 Remote Control Key Functions Key Function Usage 3.3. Power ON and OFF CAUTION!!! Before applying power to the projector thoroughly read the safety guidelines outlined at the beginning of this operators manual. 3.4. Displaying Internal Test Patterns Table 3.0-2 Internal Test Patterns #Description Purpose 3.5. Displaying External Signals Table 3.0-3 On-Screen Factory-Preset Channel Menu Display Table 3.0-4 Factory-Preset Channels Menu Display Definitions Table 3.0-5 Source Menu 3.5.1. Internal Source 3.6. Navigating the Menu 3.6.1. Displaying the Main Menu 3.6.2. Choosing Numbered Menus 3.6.3. To Choose Full or Short Menus 3.6.4. Menu Selection Examples HJT Model 100 User's Guide 3-11 Figure 3.0-3 Menu Structure Diagram 3.7. Full Menu Structure Table 3.0-6 Channel and Source Definitions 3.8. Selecting a Channel 3.8.1. Active Channel Figure 3.0-4 Channel List with Active Channel and Source 3.9. Attaching a Source Page Figure 3.0-5 Active and Highlighted Sources 3.10. Picture Settings 3.11. Menu Item Definitions Table 3.0-7 Available Menu Items Page Page Page HJT Model 100 User's Guide 3-21 3.12. Short Menu Structure Figure 3.0-6 Short Menu Tree 3.13. PC or VT-100 Terminal Control 3.13.1. Terminal Preferences Table 3.0-8 Terminal Preferences 3.13.2. Communications Protocol Table 3.0-9 Communication Protocol Table 3.0-10 VT-100 Terminal and Remote Command Equivalents Page 4.0 Setup Adjustments 4.1. Setup Preparation Table 4.0-1 Setup Phrases, Definitions, and General Information Page Page 4.1.1. Projection Lens Focus (Rough) 4.1.2. Editing Channels, Sources, and VICs Figure 4.0-1 Channels Menu Figure 4.0-2 Sources Menu 4.1.3. Factory-Preset Channels and Sources Table 4.0-2 Channel 1 Factory Preset Sources 4.1.4. Internal Source 4.2. Timing Settings and Adjustments 4.2.1. Clamp Type 4.2.2. VTR Mode 4.2.3. Blanking 4.2.4. Phase 4.3. Geometric Adjustments 4.3.1. Centering (G) 4.3.2. Size FROM THIS TO THIS Figure 4.0-3 Phase, Size and Centering Adjustments Figure 4.0-4 Undistorted Standard Crosshatch Test Pattern 4.3.3. Bow Figure 4.0-5 Bow Distortion 4.3.4. Skew/Rotate (G) Figure 4.0-6 Vertical Rotation Distortion Figure 4.0-7 Skew Distortion-Vertical Centerline Tilted 4.3.5. Linearity (G) Figure 4.0-8 Linearity Distortion (horizontal and vertical) 4.3.6. Edge Linearity Figure 4.0-9 Edge Linearity Distortion (horizontal and vertical) 4.3.7. Keystone Figure 4.0-10 Keystone (horizontal and vertical) 4.3.8. Pincushion Figure 4.0-11 Pincushion Distortion (four views) 4.3.9. Centering (Red and Blue) 4.3.10. Linearity (Red and Blue) 4.3.11. Skew/Rotate (Red and Blue) 4.3.12. Projection Lens Focus (Fine) 4.4. CRT Focus and H/V Dynamic Focus 4.5. ILA Sensitivity and Bias Page 4.6. Convergence (XY Registration) 4.6.1. Purpose of Convergence 4.6.2. Cursor Shapes and Sizes Table 4.0-3 Cursor Modes 4.6.3. Convergence Profiled Figure 4.0-12 Full-Screen Cursor Center at Upper Left (Point 1) Figure 4.0-13 Screen Cursor Center at Upper Left (Point 1) Figure 4.0-14 Three (3) Cursor Modes Move Mode Size Mode Adjust Mode Page Figure 4.0-16 Incorrectly Converged RGB Patterns (two examples) 4.7. Black Level (G2) and Sensitivity Offset 4.7.1. Black Level (G2) Figure 4.0-17 Grey/Pluge Test Pattern 4.7.2. Sensitivity Offset 4.7.3. Threshold Offset 4.8. Uniformity (Shading) 4.8.1. Sensitivity Uniformity 4.8.2. Threshold Uniformity 4.8.3. Color Balance (Grey Scale) 4.9. Picture Settings Figure 4.0-18 Cont/Bright Test Pattern 4.9.1. Brightness 4.9.2. Contrast 4.9.3. Color, Tint, Sharpness 4.9.4. Black Enhance 4.9.5. VIC Settings 4.10. Backing up Settings 4.11. Video Input Cards Table 4.0-4 VIC Types 4.11.1. Installing (or Removing) a VIC Figure 4.0-19 Projector RGBHV Inputs with Optional Component HDTV (YPbPr) Input Module VIC Installed 4.11.2. Connecting VIC Source Cables Table 4.0-5 VIC Video Source Cable Connections 4.11.3. VIC Editing Table 4.0-6 VIC Edit Numbers Table 4.0-7 Optional VIC Port Numbers and LEDs 4.11.4. VIC Settings Table 4.0-8 Quad Decoder Modes Page Figure 4.0-23 Quad Standard Decoder Module (with Line Doubler) VIC 4.12. Updating Software Table 4.0-9 Terminal Preference Selections Table 4.0-10 Terminal Preference Selections Page Page Page Page 5.0 Preventive Maintenance 5.1. Preventive Maintenance 5.1.1. Cleaning the Cabinet 5.1.2. Cleaning the Projector Lens 5.1.3. Air Filters 6.0 System Specifications Page Page Page Appendix A. Extron Switcher Interface to Model 100 A.1 Extron Switcher Configuration A.2 Extron Users Manual Inaccuracies A.3 Key Operational Differences Between Models A.3.1 Switcher to Projector Configuration Example A.3.2 Failure Diagnostics Page Appendix BConfiguration Data Export / Import Procedures (Rev 1.0.0) Appendix B Note 1 Appendix B Note 2 Appendix B.1 EXPORT Appendix B.2 IMPORT Page Page Page 7.0 Glossary Of Terms Page Page Page Page Page Page Page 8.0 Indexes Index of Tables Index of Figures