Can I use Sharp Display Wall Calibrator to calibrate a single display?
Yes. Use the Layout Wizard to create a layout with a 1x1 video wall and calibrate as normal.
How can I configure a video wall that is not rectangular in shape?
Create a layout with the maximum number of rows and columns of displays. Then disable the displays in the layout that are not part of the video wall. To disable a display, right click on the icon for the display in the main window and select Disable. It may be necessary to manually re-configure the Connection settings for some of the displays since the Layout Wizard will have assigned IP addresses or IDs sequentially for all displays, including the disabled ones.
Calibration: How often will I need to use Sharp Display Wall Calibrator to re-calibrate a video wall?
The time until the displays need to be re-calibrated will depend on many factors such as the environment and duration they are used, the age of the displays, the calibration Target settings used, and how critical the color matching requirements are. Newer displays will tend to drift more rapidly than displays that have been in use for several days or weeks. Typical re-calibration periods could be six months for most applications and as low as one month for color critical applications.
If calibrating using the SpectraView Engine (SVE), the display will automatically stabilize the display color allowing for longer intervals between calibrations.
Calibration: If one of the displays in the video wall is replaced, will it be necessary to re-calibrate the entire video wall?
It depends on the particular type of calibration settings being used and the performance of the new display compared to the existing displays. If the new display is much brighter than the existing displays, then in most cases it is possible to only calibrate the new display in order to match the others - since it can be adjusted down in luminance to match the other displays.
However, if the new display is about the same or lower brightness as the existing displays, then the existing displays may need to be re-calibrated in order to match the new display since it may now be the dimmest display.
Calibration: Why can’t I get all of the displays to match perfectly, and what can be done to improve the matching?
The displays may not all match perfectly due to several reasons, such as:
- The color and brightness uniformity of the screen is never perfect and will vary across the screen area. However, the color sensor is only measuring and adjusting the center of the screen. - When evaluating displays visually, we tend to look at the joints were adjacent displays meet. The edges of the displays are typically most non-uniform. - The color sensor used to measure the displays perceives color slightly differently than the human eye. Colors on two different displays that the sensor measures as being identical in value, may be visually different to the human eye. - The color of the LCD displays will vary slightly with viewing angle. So when viewing a video wall, each display will be viewed from a different angle which causes color shifts. - The colors on the LCD screen can be temporarily distorted by any pressure applied to the screen. applying too much pressure to the color sensor during calibration can cause inaccurate color matching.
In order to try and improve the color matching between displays after they have all been calibrated, first try recalibrating the worst matching display(s). If this does not improve the matching, then use the Visual Trim feature to make minor changes to the display visually.