Barco MGD 521 MKII user manual Important considerations

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Important considerations

The best environment for diagnostic imaging is one with controlled and dimmed ambient light. The human eye's sensitivity depends on the ambient light strength. It is most sensitive to small contrast changes (or subtle image details) at limited ambient light levels.

The best ambient light level, expressed in Lux, depends on the application. An office illumination typically requires 500 Lux. A dimmed environment, like a softcopy room, requires less than 100 Lux.

Using your display in a controlled and dimmed environment also extends its lifetime, because the display can operate at limited brightness and contrast. These levels correspond to the calibrated position in most cases.

A controlled ambient light environment implies the ambient light is as constant as possible. Cover windows to keep out the daylight. Avoid switching the lights and viewing boxes on and off. A consistent environment results in more image consistency and less eye fatigue.

Avoid reflections in the picture tube. Provide indirect lighting. Don't place the displays in front of or close to a light source like a window or viewing box, although this may be very tempting. As a rule of thumb, keep viewing boxes at least one metre (3 feet) away from the displays.

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Contents MGD 521 Mkii V599326/Rev JuneTrademark information MGD 521 M Mkii Users Guide Safety Instructions MGD 521 M Mkii Users Guide Contents MGD 521 M Mkii Users Guide Introduction OverviewPower saving system Versions and optionsAbout the manuals Precautions InstallationPackage contents Controls and connectors Signal connection Connection of video signalsConnection of data signals Connection of optical sensorConnection of power Positioning the displayImportant considerations Switching on / off Power on/offAutomatic power saving system Dpms Operation User ControlsTo activate the OSD Contrast and brightness controlTo put contrast in calibrated position To put brightness in calibrated position To control contrast manuallyTo control brightness manually To view the status information Viewing Status informationExplanation of the Status information menu items Other adjustments Activity timeoutSettings Advanced Settings and Adjustments For Service Staff onlyTo change the settings Explanation of the Settings menu items Saving the settingsAdjustments How to make the adjustmentsDescription of the adjustments Geometry RotationAdvanced Interlacing Pre correction Interlacing Post correctionSH Compensation optional SH Compensation SH Compensation ON/OFFSH Compensation SH Position Advanced Advanced To adjust the ALC system, proceed as follows Focus Static focusFocus zone ALC optionalFactory reset How to save changes Proceed as followsLuminance uniformity What happens upon saving?Picture tube MaintenanceCabinet Troubleshooting There appears no image, the green LED is onAppendix a Background Information Luminance Uniformity CorrectionPage Appendix B Technical Specifications Picture tube