NEC Display Wall Calibrator Guía de usuario descargar pdf (Pagina 76)

76 | NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE

Calibration

Problem: When switching to different video inputs the displays no longer match.

Solution: Each video input can have its own settings for various controls, such as Brightness, Gamma Selection,

Picture Mode etc.

During calibration the settings for the currently selected video input are automatically congured. However if other

video inputs are going to be used as well with the video wall, then the settings for those inputs will need to be correctly

congured to use the calibrated settings.

Use the Calibration tab on the Display Settings dialog to apply the calibration settings to other video inputs.

Problem: When showing the Calibrated Test Pattern the displays in the video wall match. However when an analog

video signal is shown they no longer match.

Solution: Differences in the analog video signal level between displays may cause the displays not to match.

The Auto-Setup operation should be performed on each display which will measure the incoming analog video and

automatically set the video level controls in the display.

This operation may need to be performed each time a new analog video signal is connected, or if a major change was

made to the video wiring to the display, or a video amplier or splitter was added to the video source.

Auto-Setup can be accessed from the OSD on each display or by using the Video tab in the Display Settings dialog

available from the Edit menu.

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.

Problem: “Error: No reply from the display” message is shown during the calibration when using a USB to RS232

adapter.

Solution: Certain models of USB to RS232 adapters may not function correctly with NEC Display Wall Calibrator and

may cause an “Error: No reply from the display” message during the calibration process. The display will be detected

correctly, but the calibration will fail at a certain point.

This issue is caused by an incompatibility with the USB to RS232 adapter and drivers that causes long messages sent

to the display to not be transmitted correctly.

If an error is encountered, please check with the hardware vendor to see if newer device drivers are available. If this

does not solve the issue, try using a different model of USB to RS232 adapter.

Try using the Verify RS232 Com Port function on the “Tools menu” on page 70 menu to verify correct operation.

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NEC Display Wall Calibrator Guía de usuario Pagina 76