Barco MGD 221 MKII User Manual
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MGD 221 MKII

Medical Greyscale

Display

Installation & User Manual

© 2001 BARCO nv. All rights reserved.

Trademark information

TrueGrey, MediCal, BarcoMed, and MeDis are registered trademarks of BARCO NV.

Windows NT is a registered trademark of Microsoft Corporation.

MGD 221 User's Guide 3

MGD 221 User's Guide 4

SAFETY INSTRUCTIONS

Regulations

This apparatus conforms to: IEC601-1,UL2601-1,cUL2601-1,EN60601-1

This apparatus is classified as Type B without Applied Part.

Usage in Hazardous locations

Class I equipment

Equipment not suitable for use in the presence of aflammable anaesthetic mixture with air orwith oxygen ornitrous oxyde.

FCC notice

This equipment has been tested and found to comply with the limits of a class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated inacommercialenvironment.Thisequipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the userwillberequiredtocorrecttheinterference at his own expense.

Power connection

Power cord: Utilise a UL-listeddetachable power cord,3-wire,type SJ or equivalent, 18

AWG min., rated 300 V min., provided with a hospital-gradetype plug5-15Pconfiguration for 120V application, or6-15Pfor 240V application.

Warning: This apparatus must be earthed!

Powerrequirements:connecttheapparatus

Read the safety and operating instructions before operating the apparatus.

Retain safety and operating instructions for future reference.

Adhere to all warnings on the apparatus and in the operating instructions manual.

Follow all instructions for operation and use.

to an AC voltage as indicated at its back.

Using a lower voltage, the apparatus will not be able to operate. Using a higher voltage may damage the apparatus.

If you are not sure of the type of power supplied, consult the power company.

Do not overload wall outlets and extension cords as this may result in fire or electric shock.

Mains lead protection (U.S.: Power cord):

Supply cords should be routed so that they are not likely to be walked upon or pinched by items placed upon or against them, paying particular attention to cords at plugs and receptacles.

Water and moisture

Never expose the apparatus to rain or moisture.

Never use the apparatus near water - e.g. near a bathtub, washbasin, swimming pool, kitchensink,laundrytuborinawetbasement.

Ventilation

•Donotcoverorblocktheventilationopenings in the cover of the set. When installing the apparatus in a cupboard or another closed location, heed the necessary space between the set and the sides of the cupboard.

Installation

• Place the apparatus on a flat, solid and stable surface that can bear the weight of at least 3 monitors. If you use an unstable cart or stand, the set may fall, causing serious injury to a child or adult, and serious damage to the equipment.

More warnings in the Installation chapter.

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MGD 221 User's Guide 6

CONTENTS

 

1. Introduction .....................................................................................................

9

1.1

Overview ..................................................................................................

9

Resolution and bandwidths .......................................................................

9

The memory system ..................................................................................

9

Image conformity and consistency ............................................................

9

Calibration and adjustments ......................................................................

9

Power saving system ...............................................................................

10

1.2

Versions and options ..............................................................................

10

1.3

About the manuals .................................................................................

10

2. Installation .....................................................................................................

11

2.1

Precautions ............................................................................................

11

2.2

The package contents ............................................................................

11

2.3

Controls and connectors ........................................................................

12

2.4

Signal connection ...................................................................................

13

a) Connection of video signals ................................................................

13

b) Connection of data signals ..................................................................

14

c) Connection of optical sensor ...............................................................

14

d) Connection of power............................................................................

15

2.5

Positioning the display ...........................................................................

15

Important considerations ..............................................................................

16

3. Operation: User controls ...............................................................................

17

3.1 Switching on / off ....................................................................................

17

3.2

Contrast and brightness control .............................................................

18

3.3

Viewing Status information.....................................................................

20

3.4

Other adjustments ..................................................................................

21

4. Advanced settings and Adjustments (For service staff only)........................

22

4.1

Settings ..................................................................................................

22

4.2

Adjustments............................................................................................

24

a) How to make the adjustments .............................................................

24

b) Description of the adjustments ............................................................

24

 

Geometry .............................................................................................

24

 

Focus ...................................................................................................

30

 

ALC (optional) .....................................................................................

30

 

Factory reset .......................................................................................

31

c) How to save changes ..........................................................................

31

5. Maintenance .................................................................................................

32

6. Troubleshooting ............................................................................................

33

Appendix A:Background information ................................................................

34

Luminance Uniformity Correction ............................................................

34

Power saving system ...............................................................................

34

Appendix B: Technical specifications ...............................................................

36

MGD 221 User's Guide 7

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1. INTRODUCTION

1.1 Overview

Resolution and bandwidths

The BARCO MGD 221 is a high resolution, greyscale portrait display. Its outstanding visual performance, combining a 2 MegaPixel resolution with a high brightness, makes it ideal for medical imaging and many other medical and scientific applications.

The MGD 221 is compatible with any AC power system worldwide and automatically synchronizes to a wide range of sync frequencies. Its high-speedvideo amplifier supports pixel clocks up to 250 MHz.

The memory system

The internal memory system can contain the adjustments for 8 different scanning formats, the so-calledscanning modes. Each scanning format is characterized by its sync signals. The display’s internal micro controller continuously samples the connected sync signals and compares them to the scanning modes already stored in the memory. If the connected signal has already been stored, the micro controller adapts the image to the corresponding adjustment values in the memory, and further adjustments are unnecessary.

Image conformity and consistency

Image conformity and consistency are the keywords. In our factory, the MGD 221 displays are perfectly adjusted and calibrated before they are shipped to the customer. Internal circuits, like the TrueGrey® and Automatic White Stability (AWS) systems, ensure display consistency over time.

Conformity with the original image quality is guaranteed by the automatic calibration, which can be done by means of an optical sensor, connected to the Sensor connector on the display. The sensor is not supplied with the display.

Calibration and adjustments

The conformity calibration, as well as the complete adjustment of the display, can be performed by means of the remote, user-friendlyMediCal® software package. MediCal, is especially developed to adjust and check BARCO’s medical displays.

Introduction 9

A lot of adjustments can also be done on the monitor itself, by means of an extensive on-screenmenu system, accessible from the rear panel controls.

Power saving system

The MGD 221 is equipped with a power saving system.

When left idle for a certain time, the computer, connected to the display, will power down the display in several steps. The power saving system can be switched on or off during the installation or adjustment of the display.

This system requires a computer imaging board that supports power saving management.

1.2 Versions and options

The MGD 221 comes in 2 different versions: With an anti-reflectivepanel in front of the picture tube, and without panel (No Panel version).

In both cases, the phosphor is a B4-L8type.

The type of CRT phosphor and the presence of the coating are indicated on the label at the rear of the display.

The video input is terminated to 75 Ohm.

Important: It is absolutely necessary that the impedances of imaging board and display are the same. If not, the image quality will be inferior.

The MGD 221 can be delivered with the following options: Southern Hemisphere Compensation and Ambient Light Compensation (ALC).

The MediCal software and the X-RiteDTP92 sensor are not delivered with the display.

MediCal can be ordered separately.

1.3 About the manuals

This guide is meant for people who want to install and use the MGD 221 display, as well as people who need to install and adjust the display. The chapter "Advanced Adjustments" is meant for trained engineers only, because it describes actions and procedures that require a technical skill to be performed properly.

The use of the software MediCal is described in the MediCal User’s Manual.

Introduction 10

2. INSTALLATION

2.1Precautions

Keep your original packaging. It is designed for this display and is the ideal protection during transport.

Do not lift the display all by yourself to avoid injury.

Avoid reflections in the picture tube to reduce eye strain.

Place the display on a strong and stable table or desk if used as desktop display.

Keep the display away from heat sources and provide enough ventilation in case it is built in a rack or console.

Keep the display away from strong sources of magnetic fields.

Make sure the display and computer are both switched off before connecting the signals.

2.2The package contents

The MGD 221 display

The accessory box (in which you found this manual)

Notes:

The MGD 221 can be part of a complete MeDis® system, consisting of the display itself, an imaging board and software. In that case, the package contains a lot more items. The contents of the package is then described in the manual of the complete system.

The ambient light shield inside the accessory box should always be used during conformity calibration with the X-RiteDTP92 optical sensor.

Installation 11

2.3 Controls and connectors

3

2 1

 

4

REMOTE OUT

5

REMOTE IN

VIDEO

6

HS / CS

8

7

VS

9

 

 

10

 

11

{1} Optical sensor plug

{2} Ambient Light Compensation (ALC) sensor (optional)

{3} Green power LED

{4} Control knob, combination of a push button and a turning knob. The control knob is used for switching the power on/off, and selecting and performing functions in the OSD(on-screendisplay) menu.

{5} Remote(RS-232)output{6} Remote(RS-232)input{7} Video input

{8} Horizontal / composite sync. input{9} Vertical sync. input

{10} Power input{11} Power button

Installation 12