VPI MONTEST-LCD Manuale utente

MAN002 Rev Date 6/13/2008

MONTEST-LCD

Computer Monitor Tester

Installation and Operation Manual

LOW

BATTERY

ALTBLUEGREENREDINTENPATTERNSELECTGROUPPREVIOUSNEXT

SYNCPOLARITYPIXELTIME

CROSS HATCH

FULL RASTER

GRAY SCALE

COLOR BARS MONTEST-LCD

NTI NETWORK

TECHNOLOGIES

INCORPORATED

Tel: 330-562-2622

www.montest.com

1275 Danner Drive

Fax: 330-562-1999

VPI VIDEO

PRODUCTS

INCORPORATED

Aurora,Ohio 44202

TRADEMARK

MONTEST is a trademark of Video Products Inc in the U.S. and other countries.

be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic,

mechanical, photocopying, recording, or otherwise, without the prior written consent of Video Products

Incorporated, 1275 Danner Drive, Aurora, Ohio 44202

CHANGES

The material in this manual is for information only and is subject to change without notice. Video Products

Incorporated reserves the right to make changes in the product design without reservation and without

notification to its users.

WARNINGS

Applying a scan format to a monitor that is beyond the specified frequency range of the monitor can

damage the monitor. Refer to the monitor’s manual or label to verify the frequency of operation for

the monitor.

The pin out used for the 13W3 type connectors (SUN connector) varies between monitor

manufactures. Insure that a monitor with a 13W3 connector matches the MONTEST-LCD pin out

before connecting the monitor to the MONTEST-LCD.

TABLE OF CONTENTS

INTRODUCTION ............................................................................................................................. 1

INSTALLATION ............................................................................................................................... 2

Signal Pin Assignments ............................................................................................................... 2

Output Connections ..................................................................................................................... 2

LCD DISPLAY FUNCTIONS ...........................................................................................................3

Main Screen .............................................................................................................................. 3

Alternate Screen ....................................................................................................................... 3

B Screen ................................................................................................................................... 3

C Screen ................................................................................................................................... 3

Examples of Display Screens ...................................................................................................... 3

SWITCH & INDICATOR FUNCTIONS ............................................................................................ 4

OPERATION.................................................................................................................................... 6

CHANGING BATTERIES ................................................................................................................ 6

TROUBLESHOOTING .................................................................................................................... 7

SCAN FORMATS ............................................................................................................................ 8

SPECIFICATIONS......................................................................................................................... 10

SIGNAL WAVEFORMS................................................................................................................. 12

AC ADAPTER CONVERSION INSTRUCTIONS .......................................................................... 13

Introduction ............................................................................................................................. 13

Plug Installation....................................................................................................................... 13

WARRANTY INFORMATION........................................................................................................ 14

INTRODUCTION

The VPI MONTEST-LCD is an instrument for testing, repairing, and aligning analog computer monitors, LCD displays and video

projection systems. The MONTEST-LCD has the following features:

•Easy to use push button operation with last setting memory. The last user settings selected are restored at power up.

•A microprocessor and programmable logic based design provides significant performance improvement over the common,

memory based monitor testers.

•Over one hundred scan formats are selectable with the MONTEST-LCD. This includes VGA, MAC, and SUN scan formats.

All current VESA standard and most fixed frequency monitor scan formats are also included.

•Four video output connections for direct connection to most monitors.

VGA (15 pin HD), MAC II (15 pin D), SUN (13W3), and BNC (5).

•Versatile and selectable sync outputs for composite, sync on green and horizontal & vertical with selectable polarity.

•The LCD display clearly shows the user, the scan format, the pattern and the output options selected and the LED indicators

show the status of the video output.

•The 4 video patterns with 16 colors and intensity control provide all the patterns and colors normally required to test and align

any monitor.

Patterns Provided Used to test

Raster color purity

Color bars color balance

Gray bars intensification

Cross Hatch w/ Dots convergence, focus & geometry

•Small portable unit with battery or AC adapter operation.

•Selectable 10 minute timeout on the video to prevent CRT burn-in.

•Selectable auto sequencing through the patterns to burn-in monitors.

•Selectable pixel size. (16 and 31 nanoseconds)

Materials

Materials supplied include:

•VPI MONTEST-LCD

•2.1X5.5mm Plug (see page 13)

•This owner's manual

INSTALLATION

Signal Pin Assignments

The table below shows the connector pins that the MONTEST-LCD output signals connect to.

Connector Pin Signal Assingments

Output Signal Connector Pins

MAC II SUN VGA BNC

RED 2 A1 1 RED

GREEN 5 A2 2 GREEN

BLUE 9 A3 3 BLUE

HORIZ/COMP 15 6 13 HORIZ

VERT 12 2 14 VERT

COMP SYNC 3 5 - -

GND 1, 6, 11 1, 4, 7 4, 5, 6, 7 Shell

13, 14 10 8, 10, 11

Note: When composite sync is selected the composite sync is available on both the HORIZ/COMP and the COMP

SYNC outputs.

Output Connections

1. A common PC monitor connects to the VGA (15HD female) or the MAC II (15DB female) connectors.

2. A SUN monitor is connected to the SUN (13W3 female) connector. Other monitors with a 13W3 type connector may have a

different pin out. Consult the monitor’s manual for the monitor's pin out. Those monitors with a different pin out should be

connected with an adapter.

3. A monitor with BNC connectors or an adapter cable can be connected to the BNC connectors on the MONTEST-LCD.

Depending on the type of sync used the number of required connections to the MONTEST-LCD will vary.

Sync Type Cables Connections

SOG 3 RED GREEN BLUE

CMP 4 RED GREEN BLUE HORIZ/COMP

H & V 5 RED GREEN BLUE HORIZ/COMP VERT

REAR VIEW OF MONTEST-LCD

INTENSITY

TIME

PATTERN

MAC II SUN VGA9 VDC

RED GREEN BLUE HORIZ/

COMP

VERT

VGA

Mating face of a

15HD female

42351

10 98 67

15 14 13 12 11

SUN

Mating face of a

13W3 female

12345

678910

A1 A2 A3

MAC

Mating face of a

15DB female

12345678

101112131415

LCD DISPLAY FUNCTIONS

The LCD display shows a variety of information. During power up the model number is shown then the last scan format selected.

Multiple screens of information are available for each scan format. The ALT button will step through the 4 screens of data for

each scan format. The NEXT, PREVIOUS and GROUP buttons will display the data for the selected screen as you step through

the scan formats. The following describes the screen information.

Main Screen

Scan Format Group VGA, MAC, SUN, 30s - 110s

Scan Format Number 01 -

Screen _ main

a Alternate Screen

b B Screen

c C Screen

Number of lines Number of horizontal lines in each vertical frame

Pattern Icon The current pattern icon (#) is displayed when the scan format is selected. (Raster, Color

bars, Gray bars, Hatch)

Frequency Horizontal (KHz) and Vertical (Hz) scan frequency

Alternate Screen

No Timeout NT is displayed if the 10-minute video display timeout is OFF. Selectable with the TIME

button when the alternate screen is displayed

Pixel Width 16ns or 31ns. Selectable with the PIXEL button when the alternate screen is displayed.

Sync Polarity +H +V, -H +V, +H –V and –H –V. Selectable with the POLARITY button when the alternate

screen is displayed.

Sync Type H&V, CMP and SOG. Selectable with the SYNC button when the alternate screen is

displayed

B Screen

Resolution Typical resolution used for scan format. The actual pixel size used may not match the

horizontal resolution.

C Screen

Optional Data Additional information may be provided.

Examples of Display Screens

Main Screen Alternate Screen B Screen C Screen

30s 01 480 Line #

31.5KHz 60Hz

30s 01a NT #

31ns +H +V H&V

30s 01b #

640 x 480 @ 60Hz

30s 01c #

Optional Data

SWITCH & INDICATOR FUNCTIONS

FRONT VIEW OF MONTEST-LCD

ON/OFF Turns ON and OFF AC adapter and battery power to the MONTEST-LCD.

NEXT Steps up to the next scan formats in a group.

Note: Scan formats are in horizontal scan frequency order.

PREVIOUS Steps down to the previous scan formats in a group.

GROUP Steps through the groups of scan formats. The first scan format for each group is displayed after pushing the

group button. The groups are organized by horizontal scan frequency. The VGA, MAC and SUN groups

contain the common scan formats used for those platforms. The remaining groups contain the scan formats for

each decade of horizontal scan frequencies.

Group Range Number in Group

VGA 31.5 - 75.0 7

MAC 31.5 – 74.9 7

SUN 50.0 – 71.7 7

30s 30.0 – 39.9 18

40s 40.0 – 49.9 7

50s 50.0 – 59.9 10

60s 60.0 – 69.9 19

70s 70.0 – 79.9 15

80s 80.0 – 89.9 12

90s 90.0 – 99.9 10

100s 100.0 – 109.9 9

110s 110.0 – 119.9 3

120s 120.0 – 129.9 2

SELECT Turns ON and OFF the video and sync output signals and the pattern icon. The current MONTEST-LCD

settings are stored when a scan format is selected. These settings are recalled at power up, restoring the last

settings selected.

PATTERN Steps through the four video output patterns. Full Raster, Color Bars, Gray Bars and Crosshatch. The Full

Raster pattern is set when a new scan format is selected. The icon for the current pattern is shown on the LCD

display when SELECT is ON.

Pushing the pattern button for 3 seconds will cause the MONTEST-LCD to sequence through the four patterns

automatically with a five-second interval for each pattern. The automatic sequencing is stopped when the

pattern button is pushed again for 3 seconds or, a new scan format is selected.

INTENSITY Alternates the video output between full and half intensity. The LED indicator is ON for full intensity.

RED Turns ON and OFF the red video signal. The LED indicator is ON when the red video is ON.

GREEN Turns ON and OFF the green video signal. The LED indicator is ON when the green video is ON.

LOW

BATTERY

ALTBLUEGREENREDINTENPATTERNSELECTGROUPPREVIOUSNEXT

SYNCPOLARITYPIXELTIME

CROSS HATCH

FULL RASTER

GRAY SCALE

COLOR BARS MONTEST-LCD

NTI NETWORK

TECHNOLOGIES

INCORPORATED

BLUE Turns ON and OFF the blue video signal. The LED indicator is ON when the blue video is ON.

ALT The Alternate (ALT) button is used to display addition information on the LCD display.

When a scan format is displayed pushing ALT will display the default pixel and sync settings for the scan format.

Pushing the ALT button additional times will display addition information for that scan format.

Pushing the ALT button for 3 seconds, at power up, during the display of VPI MONTEST-LCD, will display the

MONTEST-LCD status. Pushing the ALT button additional times displays:

Number of scan formats in Groups 1 – 4

Number of scan formats in Groups 5 – 8

Number of scan formats in Groups 9 – 12

Number of scan formats in Groups 13 – 16

Back to normal operation, displaying the last selected scan format.

TIME When the alternate screen is displayed, the TIME button will alternate the video 10 minute timeout ON and OFF.

NT on the LCD display indicates No Timeout is selected. When the timeout has occurred the video output

signals are disabled, but the sync signals remain active. Also the LEDs are all OFF except the TIME (INTEN)

LED is flashing. Pushing the TIME button will then turn ON the video and restart the timeout timer.

PIXEL When the alternate screen is displayed, the PIXEL button will alternate the pixel period setting between 16.25

ns and 31.50 ns.

POLARITY When the alternate screen is displayed, the POLARITY button will step through the four polarity options for the

horizontal and vertical sync:

+H +V

–H +V

+H –V

–H –V

SYNC When the alternate screen is displayed, the SYNC button will step through the three sync options:

H & V Horizontal and Vertical sync (Default)

CMP Composite horizontal and vertical sync

SOG Sync On Green

LOW Indicates that the remaining battery power is low.

BATTERY

OPERATION

The following are the normal operational steps for using the MONTEST-LCD.

1. Connect the monitor to the MONTEST-LCD. See the section on "CONNECTIONS" (page 2) for details.

2. Turn ON the MONTEST-LCD power. The MONTEST-LCD can be used with the AC adapter, or the internal batteries.

3. Use the GROUP button to select the group of scan formats to be used. See the tables under SCAN FORMATS (pages 8 and

9), as required.

4. Use the NEXT and PREVIOUS buttons to step through the scan formats until the desired scan format is found.

5. The ALT button can be used to look at the additional screens of LCD data. Also the pixel time, sync type, and sync polarity

can be reviewed or changed.

6. Once the desired scan format is displayed, pushing the SELECT button will turn ON the video and sync outputs. The raster

icon will then be displayed on the LCD and the raster video pattern is output to your monitor.

7. Change the pattern, colors, and intensity as desired.

8. Pushing the SELECT button again will turn OFF the video and sync outputs. Also changing the scan format with GROUP,

NEXT or PREVIOUS will turn OFF the video and sync outputs.

CHANGING BATTERIES

The MONTEST-LCD can be powered by 6 alkaline C-size batteries. To change the batteries, follow these steps:

1. Normal electrostatic discharge (ESD) handling precautions should be observed when the enclosure of the MONTEST-LCD is

open. Touch a grounded surface before performing any hardware procedure.

2. Turn OFF the power and remove all connections to the MONTEST-LCD.

3. Place the MONTEST-LCD upside down on a work surface.

4. Remove the 2 Phillips head screws that hold the top and bottom of the enclosure together.

5. Carefully turn the MONTEST-LCD right side up, holding the enclosure together.

6. Lift off the top of the enclosure to expose the battery holder.

7. Install 6 new alkaline C-size batteries noting the battery polarity marked on the battery holder.

8. Reverse this procedure to reassemble the MONTEST-LCD.

Note: Dead batteries should be removed from the MONTEST-LCD to prevent damage caused by acid leaking from a

battery.

TROUBLESHOOTING

Problem Solution

LCD and indicators are OFF. No power.

•Check AC adapter connections.

•Check batteries

Low battery indicator is ON.

Replace batteries

NiCad batteries were factory installed. Replace with same

or with alkaline batteries.

No video on monitor

•Check connections

•Make sure scan format is selected. (see "SELECT"

page 4)

•Is timeout active? (see "TIME" page 5)

"INTEN" indicator is flashing

If timeout is active, this will flash. (see "TIME" page 5)

Video on monitor is dim •Check intensity setting

•Use only one output connector at a time.

Dots can not be seen

Change pixel to 31ns setting

Pattern keeps changing

Auto pattern sequencing is ON (see "PATTERN" page 4)

At power up the LCD displays "STATUS

ERROR XX"

Contact VPI for solution.

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