Barco MGD 221 MKII user manual Contrast and brightness control, To activate the OSD

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3.2 Contrast and brightness control

Contrast and brightness can be controlled through the OSD menus.

To activate the OSD

Turn the control knob {4} from left to right or from right to left. As a result, the OSD main menu appears.

Note: The control knob should turn over at least 30 degrees before the OSD becomes visible.

 

MAIN MENU

 

-

Contrast

CAL

-

Brightness

CAL

-Status information

-Settings

-Adjustments

-Exit

The OSD main menu

The main menu indicates the current setting for contrast and brightness.

This can be:

CAL: The calibrated position. This is the preferred setting in a controlled environment.

ALC: For contrast only. This indicates the Ambient Light Compensation (ALC) is on, and contrast is controlled automatically, depending on the ambient light. ALC is an option.

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When the main menu does not specify a setting,

 

contrast or brightness is manually set to a

 

different value than the calibrated position.

To put contrast in calibrated position

1Turn the control knob to select Contrast in the OSD main menu.

2Press the control knob shortly. The contrast control menu appears.

3In the contrast control menu, select Contrast CAL position and press the control knob shortly.

Contrast

-Contrast CAL position

-Manual contrast adjustment

-Exit

Contrast control menu

Operation18

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Contents Medical Greyscale Display MGD 221 MkiiTrademark information MGD 221 Users Guide Safety Instructions MGD 221 Users Guide Contents MGD 221 Users Guide Overview IntroductionAbout the manuals Power saving systemVersions and options Package contents InstallationPrecautions Controls and connectors Connection of video signals Signal connectionConnection of optical sensor Connection of data signalsPositioning the display Connection of powerImportant considerations Power on/off Switching on / offAutomatic power saving system Dpms Operation User ControlsTo put contrast in calibrated position Contrast and brightness controlTo activate the OSD To control brightness manually To control contrast manuallyTo put brightness in calibrated position Explanation of the Status information menu items Viewing Status informationTo view the status information Activity timeout Other adjustmentsTo change the settings Advanced Settings and Adjustments For Service Staff onlySettings Saving the settings Explanation of the Settings menu itemsHow to make the adjustments AdjustmentsDescription of the adjustments Geometry RotationAdvanced Interlacing Post correction Interlacing Pre correctionSH Compensation optional SH Compensation SH Compensation ON/OFFSH Compensation SH Position Advanced Advanced Focus Static focus To adjust the ALC system, proceed as followsFocus zone ALC optionalHow to save changes Proceed as follows Factory resetLuminance uniformity What happens upon saving?Cabinet MaintenancePicture tube There appears no image, the green LED is blinking TroubleshootingThere appears no image, the green LED is on Luminance Uniformity Correction Appendix a Background InformationPage AR panel 30% Appendix B Technical Specifications