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16 | NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE

Calibration Projects

The NEC Display Wall Calibrator application uses Project les to store the following information and settings:

• Layouts including all of the connection settings and video wall size information.

• Measurements for each display, including the time each measurement was taken.

• Calibration results for each display, including the nal color characteristics of each display and when it was

calibrated.

• Calibrated Monitor Settings for each display so that settings can be restored to one or all displays if

necessary.

All of the display measurements and settings are unique to each display and are identied within the software by the

model and serial number of each display.

Project les can be saved at any point. By saving Projects using different le names, different congurations for the

same video wall can be stored and later restored to the displays if necessary.

Project les can also be used to keep track of when a video wall was last calibrated.

Analog Video Inputs - Important Notice

The display calibration process adjusts the digital portion of the video processing within the display. For analog

video signals such as VGA, RGB/HV, and Option-Analog, the signal is digitized within the display using an

Analog-to-Digital converter. Due to variances in analog video signal levels and offsets from the video source

device, it may be necessary to also adjust the settings for the video Analog-to-Digital conversion.

If the screens on the video wall do not match well in color after calibration, use the Test Pattern tool with

the Calibrated White setting to evaluate the displays using their internally generated test patterns. If the Test

Patterns match well, then it indicates that the analog video signal levels need to be adjusted. Use the Display

Settings dialog - Video tab to perform an automatic adjustment of the video levels.

If the analog automatic adjustment procedure still does not provide a good enough match between displays, a

more advanced manual method of adjusting the analog video signal levels can be used.

See the Calibration Determination Flowchart for a more detailed guide on the process of determining when to

calibrate and perform the analog setup.

Note: This adjustment process requires specic patterns to be displayed on the video signal in order for the display to

automatically adjust the video signal levels correctly. Failure to display the correct signal may result in the video

levels being incorrectly set and the displays may not match in color when using an analog video source.

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NEC Display Wall Calibrator Guía de usuario Pagina 16