Copyright: COMPAQ LCD Display Assistant


Compaq LCD Display Assistant

Use Compaq LCD Display Assistant to improve your TFT Flat Panel Monitor's display quality. Improvements are made by adjusting the On-Screen Display (OSD) Digital Conversion functions:  Clock,  Clock Phase, and Clock Phase Fine. This should only be necessary when the monitor is first attached to a new or different computer or when a new or different display mode is selected for the first time.

NOTE: The Compaq LCD Display Assistant is designed for use only with LCD displays.

Before Running Compaq LCD Display

Launching the OSD Clock Menu

Adjusting CLOCK Setting

Adjusting CLOCK PHASE Setting

Adjusting CLOCK PHASE FINE Setting

Display Resolutions

Glossary


Before Running Compaq LCD Display Assistant

1	Allow the monitor to warm up for at least 20 minutes for optimum performance.

2	Sit directly in front of the monitor when making adjustments to the display.

3	See Display Resolutions for a list of supported preset display modes. To verify that your display settings are supported and that the color palette is set to 256 color, check Windows Display Properties:

 For Windows 95, click Start [image] Settings [image] Control Panel [image] Display icon [image] Settings tab.

 For Windows 3.1, click Main [image] Windows Setup.

Important:

For TFT450 and TFT500 users, if your systems display is set to the 1024x768 resolution, then you can ignore this note. If the systems display is set to the 640x480 or 800x600 resolution, then to optimize the flat panel display we suggest turning off the "Full Screen" function of your flat panel monitor. The Full Screen control is under the OSD Management menu.

4	Run the Compaq LCD Display Assistant utility to adjust the CLOCK, CLOCK PHASE and CLOCK PHASE FINE settings.


Launching the OSD Clock Menu

1 Press the Select button on the monitor front panel to launch the on-screen display (OSD) Main Menu. 2 Press the Minus (-) button on the monitor front panel to scroll down the Main Menu and highlight Digital Conversion. 3 Press the Select button again to launch the Digital Conversion second level menu. 4 From the Digital Conversion second level menu, select one of the following:  Clock Setting   Clock Phase Setting   Clock Phase Fine Setting


Adjusting CLOCK Setting

IMPORTANT: This Clock Setting must be set correctly because the effectiveness of the Clock Phase functions are dependent on the value of this main Clock function.

1	The Clock Setting menu item will already be highlighted. Press the Select button to enter the Clock Setting adjustment window.

2	Press the Plus (+) button to increase or the Minus (-) button to decrease the Clock value.

3	Increase/decrease the Clock value until there are no large vertical bars/stripes visible within the video.

4	The large vertical bars/stripes are very noticeable as the Clock values are changed. If there is any video distortion such as horizontal scrolling lines, you will need to adjust the Clock Phase Setting.

5	When you are finished, press the Select button to exit the Clock Setting adjustment window.

6	Press the Select button again to select Save and Return.


Adjusting CLOCK PHASE Setting

1	Press the Minus (-) button to scroll down and highlight the Clock Phase function.

2	Press the Select button to enter the Clock Phase adjustment window.

3	Increase/decrease the Clock Phase value to minimize video distortion (horizontal scrolling lines, video jitter, fuzzy video).  The difference between the alternating black and white lines should become clear.

NOTE: Selecting some values of the Clock and Clock Phase functions may cause the monitor to lose sync with the computer. If this occurs, continue adjusting the values until sync is regained. To restore the factory settings, select Reset from the Factory Reset menu in the OSD.


Adjusting CLOCK PHASE FINE Setting

1	Press the Minus (-) button to scroll down and highlight the Clock Phase Fine function.

2	Press the Select button to enter the Clock Phase Fine adjustment window.

3	Press the Plus or Minus buttons to increase/decrease the values and fine-tune the focus and/or minimize any video distortion (horizontal scrolling lines, streaking, etc.).


Display Resolutions

Preset Modes	Resolutions with H-sync / V-sync
1. Industry Standard	640 × 350 at 31.5 kHz / 70 Hz
2. Industry Standard	640 × 480 at 31.5 kHz / 60 Hz
3. VESA	640 × 480 at 37.5 kHz / 75 Hz
4. VESA	640 × 480 at 43.3 kHz / 85 Hz
5. Industry Standard	720 × 400 at 31.5 kHz / 70 Hz
6. VESA	800 × 600 at 37.8 kHz / 60 Hz
7. VESA	800 × 600 at 46.9 kHz / 75 Hz
8. VESA	800 × 600 at 53.7 kHz / 85 Hz
9. Apple Macintosh	832 × 624 at 49.7 kHz / 75 Hz
10. VESA	1024 × 768 at 48.4 kHz / 60 Hz
11. VESA	1024 × 768 at 56.5 kHz / 70 Hz
12. VESA	1024 × 768 at 60 kHz / 75 Hz
13. VESA	1024 × 768 at 68.7 kHz / 85 Hz
14. Apple Macintosh	1152 × 870 at 68.7 kHz / 75 Hz
15. SUN	1152 × 900 at 61.8 kHz / 66 Hz
16. VESA	1280 × 1024 at 63.9 kHz / 60 Hz
17. VESA	1280 × 1024 at 79.9 kHz / 75 Hz

Preset modes for the TFT450, TFT500 and TFT5000 include modes 1 to 12.

Preset modes for the TFT8000 are from 1 to 10 and 12 to 17.

To verify that your display settings are supported or to select a preset display resolution mode using the OSD:

1	Press the Select button on the monitor front panel. The OSD main menu will appear on the monitor screen.

2	Press the Minus (-) button to scroll down the menu and highlight Management.

3	Press the Select button again to access the Management second level menu.

4	Press the Minus (-) button to scroll down and highlight Mode Display.

5	Press the Select button to enter the Mode Display selection window.

6	Press the Minus (-) button to highlight ON for the TFT450 monitor.

7	Press the Select button to approve selection, then press the Select button twice to Save and Return and then to Exit.


Digital Conversion

This refers to the flat panel monitors ability to convert the computers analog video output signal to a digital signal. This conversion process allows the flat panel monitor to function like a standard analog monitor without having to add additional hardware to your computer. This monitor features a Digital Conversion menu within the OSD that allows you to manually correct the flat panels internal image control (clock) signals to improve the image quality.


Fine-tune

To adjust the clock values in very small increments.


Clock

An OSD function located under the Digital Conversion menu.  It allows you to manually synchronize the monitors internal main timing value to the computer video signals main timing value.  The Clock must be set correctly because the effectiveness of the Clock Phase functions are dependent on the value of this main Clock function.


Clock Phase

An OSD function located under the Digital Conversion menu that allows you to reduce video distortion and improve focus/clarity. Technically, this function allows you to adjust the monitors internal Clock to the same phase as the incoming video signal.


Clock Phase Fine

An OSD function located under the Digital Conversion menu that allows you to fine-tune focus/clarity adjustments that were made using the Clock Phase function.


On-Screen Display (OSD)

A menu of screen functions that appear on the monitor screen when the Select button on the front panel is pressed. These screen functions allow you to adjust the screen appearance.


Glossary

Clock

Clock Phase

Clock Phase Fine

Digital Conversion

Frequencies

LCD

OSD

Palette

Pixel

Resolution

Sync

TFT

VESA

Video Distortion

Video Modes


Frequencies

In a video system, frequencies represent video signal operating values or ranges. Example: The factory default vertical frequencies for the monitor in the 640x480 display mode are 60Hz, 75Hz, and 85Hz.


LCD

Liquid Crystal Display, an electro-optical display that uses a liquid compound sandwiched between two transparent electrodes. When an electric field is applied, the molecules align with the field, forming a crystalline arrangement that polarizes light passing through it, or being reflected by it. This display technology is thin, lightweight and consumes less power than the traditional CRT displays.


Palette

A subset of the color table within the Microsoft Windows Display settings that establishes the colors that can be displayed on the screen at a particular time.


Pixel

Pixels are basic dots on the display screen that make up the screen image.


Resolution

The number of pixels per unit of measurement displayed horizontally and vertically on a monitor screen. Higher resolution means more of the image can be seen on the screen without scrolling or panning.


Synchronization

The matching of timing or speed among components of a system so that they are all coordinated.


Thin-Film Transistor

A fabrication method used in flat panel displays where the electronic components (transistors) used to operate each pixel are actually fabricated onto the flat panel itself.


VESA

Video Electronics Standards Association - An international organization that develops and supports video interface standards to promote uniformity and economies of scale for the video electronics industry.


Video Distortion

Also referred to as video noise. Abnormal screen characteristics that degrade the monitor front-of-screen performance. Examples of these characteristics are: picture jitter, horizontally scrolling lines, fuzzy focus, and window smearing or streaking. These characteristics are common on the flat panel monitors if the Clock and Clock Phase functions are not set correctly.


Video Modes

Specific frequencies at which the monitor can display text or graphical information. Most monitors today support many frequencies; this is called multifrequency and ensures that the monitor will perform with a variety of computers and applications.


About the Compaq LCD Display Assistant

Version 3.00 / January 1999

Copyright © 1999 Compaq Computer Corporation

All Rights Reserved

Note :  This program is only intended to be used on LCD flat panel monitors.

The software described in this Help file is furnished under a license agreement or nondisclosure agreement. The software may be used or copied only in accordance with the terms of the agreement.

Microsoft, MS-DOS, Windows, Windows NT, and other names of Microsoft products referenced herein are trademarks or registered trademarks of Microsoft Corporation.

VESA is a registered trademark of the Video Electronics Standard Association.

Product names mentioned herein may be trademarks and/or registered trademarks of their respective companies.

Information on Compaq Monitor support software is available on the Compaq World Wide Web site at (http://www.compaq.com/products/monitors/servsupp.html)