NEC Display Wall Calibrator - UsEr’s GUiDE |
will be necessary to measure the color characteristics of each display so the software can calculate how to match
all the displays. These measurements will determine the maximum possible Intensity that will give a color match
with all the displays.
Click the
Measure All
button on the
Actions
panel to start the measurement process. You will be prompted to place
the sensor on the screen of each display in turn. The display to place the sensor on will flash alternate red and green
colors until the sensor has been positioned on the screen. Place the sensor flat against the center of the screen,
and hold it steady while applying the minimum force possible.
The software will then automatically measure the display characteristics which will take about 30 seconds. When
complete, the next display to be measured will flash and this process will continue until all displays are measured.
As each display is successfully measured, its rectangle in the main window will change from Cyan to Magenta.
9. Define the Calibration Target
Select
Calibration Target…
from the
Edit
menu, or click the
Edit…
button in the
Calibration Target
panel to open
the
Edit Calibration Target
dialog. The default values are suitable for most applications. If necessary for a particular
application, custom settings for the method of Intensity adjustment, desired White Point, Gamma value, and Contrast
Ratio can be selected.
10. Calibrate displays
Click the
Calibrate All
button on the
Actions
panel to start the calibration process. You will be prompted to place the
sensor on the screen of each display in turn. The display to place the sensor on will flash alternate red and green
colors until the sensor has been positioned on the screen. The software will then automatically calibrate the display
which will take 2 minutes or more.
When complete, the next display to be calibrated will flash and this process will continue until all displays are
calibrated.
As each display is successfully calibrated, its rectangle in the main window will change from Magenta to Green.
11. Evaluate results
Once the calibration process is completed, the results can be visually evaluated by using the Test Pattern feature.
On the
Test Pattern
panel, select
All displays
, and click the
Calibrated White
button.
Note:
Since there is a slight color shift with screen viewing angle, so be sure to evaluate the video wall from a
distance and from directly in front.
Click the
Off
button to turn off the test patterns.
The numerical results of the measurement and calibration process are available by selecting
Summary
from the
View
menu. This window shows the connection settings for all of the displays, including the model and serial
number information for each display.
If the displays do not match well when showing an analog video signal, this indicates that the analog video signal
levels may need to be adjusted to compensate for variations that may cause color shifts between displays. See the
Analog Inputs - Important Notice
for more information.
12. Save
Save the project file so it can be used again in the future to re-calibrate the displays when necessary.
