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| NEC Display Wall Calibrator - UsEr’s GUiDE

This panel is used to display test patterns on either the

currently selected display, or all of the displays in the layout.
Test patterns can be used to visually evaluate the displays

both before and after calibration.
Two patterns are available,

100% White

, and

Calibrated

White

.

The

100% White

pattern is native white with no correction

applied by the calibration.
The

Calibrated White

pattern is only available if the display

has been calibrated and shows the adjusted white after

calibration. It is useful to visually evaluate the calibration

accuracy.
Clicking

Off

will turn off the test patterns.

The Test Patterns can either be shown on the selected display, or all displays, by selecting the appropriate

setting in

Apply to:

.

Note:

Since there is a slight color shift with viewing angle, when evaluating the color calibration uniformity

across multiple displays, be sure to stand as far back as possible from the video wall, and evaluate from directly

in front of the screens.

Test Pattern panel

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Содержание Display Wall Calibrator 1.0.00

Страница 1: ...Version 1 0 00 User s Guide ...

Страница 2: ...Macintosh Mac and the Mac logo are trademarks of Apple Computer Inc registered in the U S and other countries Copyright 2009 NEC Display Solutions Ltd The content of this manual is furnished for informational use only is subject to change without notice and should not be construed as a commitment by NEC Display Solutions Ltd NEC Display Solutions Ltd assumes no responsibility or liability for any ...

Страница 3: ... OR FITNESS FOR A PARTICULAR PURPOSE SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES OR THE LIMITATION OR EXCLUSION OF LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE EXCLUSIONS OR LIMITATIONS MAY NOT APPLY TO YOU This Product is warranted in accordance with the terms of this limited warranty Consumers are cautioned that Product performance is affected by system configu...

Страница 4: ...P LAN with daisy chained RS232 18 Multi IP LAN 19 Wireless multi IP LAN with daisy chained RS232 20 Configuring a Layout with the Layout Wizard 21 Calibration Times 25 Video Inputs 25 4 Dialogs Settings and Menus 26 Main NEC Display Wall Calibrator window 26 Edit Calibration Target Configuration dialog 28 Custom Gamma Curve dialog 30 Custom White Point dialog 31 Preferences dialog 32 Preferences d...

Страница 5: ...ation tab 43 Display Settings dialog Status tab 43 Summary window 44 Menus 45 File menu 45 Edit menu 45 View menu 45 Help menu 45 5 Quick Start to NEC Display Wall Calibrator 46 6 Frequently Asked Questions 48 Calibration 48 7 Troubleshooting 49 Installation and Setup 49 Calibration 50 Color Sensor 51 8 Assigning an IP address 52 Glossary 54 ...

Страница 6: ...d Always store the color sensor in the holder when not in use Never touch the measurement window in the color sensor Never disconnect the color sensor while the NEC Display Wall Calibrator software is running Always allow the displays to warm up for at least 30 minutes before calibrating Note USB extender cables Some models of color sensors may not work properly when using a USB extender cable or ...

Страница 7: ...ye One Monitor Eye One Pro X Rite ColorMunki Monaco OptixXR X Rite DTP 94 ColorVision Datacolor Spyder 2 Datacolor Spyder 3 USB At least one available USB port for Color Sensor An active USB extender cable of up to 5M 16 feet in length can be used if necessary with some models of color sensors USB extender cables should not be used with the X Rite GretagMacbeth Eye One Monitor Eye One Pro or X Rit...

Страница 8: ... of video signal to the displays in the video wall as test patterns are automatically generated within in each display Communications with each display from the host PC are performed via either RS232 or LAN Ethernet Once all of the displays have been measured the calibration Target can be calculated This Target defines the various calibration parameters such as the white point color of pure white ...

Страница 9: ...at highly accurate color can be achieved not only at 100 white but at all steps along the grayscale A variety of different Tone Response Curves can be applied also from something as simple as a small simple gamma value to complex custom curves Flexible Connections Displays can be connected using RS232 LAN or in combinations of both to the host PC used to perform the calibration By using a wireless...

Страница 10: ... the monitors to the color characteristics in the selected Target When calibrating a video wall careful consideration should be made as to how the displays will be calibrated so that they match as necessary The video content shown on the displays and how it will be divided on individual displays will determine some of the calibration settings For example when using a video wall consisting of sever...

Страница 11: ...at each individual display can achieve while matching up the white points on each display Use this option if it is desired that all of the displays match in color but is not important if they match each other in luminance Specific Level Calibrates all of the displays to a specified target value of luminance while matching the white points on all displays If a display can not achieve the specified ...

Страница 12: ... being used for does not need a specific White Point and the brightest possible display is required a White Point that will achieve the highest possible overall Intensity after calibrating can be automatically calculated This calculation factors in the native Intensity and White Points of each display in order to determine the resulting White Point This function is available in the White Point gro...

Страница 13: ...ibration process for a video wall when matching both the Intensity and White Point is outlined in the following steps Initialize Displays This step resets each display to the default color settings so that the native performance of each display can be measured before the calibration Settings such as the Brightness Color mode Con trast etc will be reset Measuring Displays During this step all displ...

Страница 14: ...AnalogVideo 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 adj...

Страница 15: ...ding on the calibration Target type being used it may be necessary to measure all of the displays in the video wall in order to determine the dimmest display The physical wiring connection order between displays does not dictate the order in which the displays are measured and calibrated since MONITOR IDs and IP addresses can be configured for each display Configuring Connections Displays can be c...

Страница 16: ...e The cable connections between displays does not need to follow the same ordering as the ID assignments In this example the daisy chain is connected in order 1 2 4 3 The following image shows how this layout looks in the Summary window when configured Notice that all displays are configured to use the same COM port even though only the first display is actually connected to the host PC RS232 IN R...

Страница 17: ...daisy chain must have a unique MONITOR ID The following image shows how this layout looks in the Summary window when configured Notice that displays connected on COM1 can have the same IDs as those on COM2 because they are on separate daisy chains RS232 IN RS232 OUT RS232 IN RS232 OUT RS232 IN RS232 IN ID 1 RS232 Display 1 ID 2 RS232 Display 2 ID 1 RS232 Display 3 ID 2 RS232 Display 4 PC COM1 COM2...

Страница 18: ...lay Since communications to all of the displays is routed through the first display the software is configured to use the IP address of the first display for each display The first display will translate commands via LAN to the RS232 OUT to be received by the other displays in the video wall The following image shows how this layout looks in the Summary window when configured Notice that all of th...

Страница 19: ...IP address and MONITOR ID of each display The ID of each display does not need to be unique since the displays are not daisy chained however the ID set on the OSD must match that set in the software The following image shows how this layout looks in the Summary window when configured LAN LAN LAN LAN LAN ID 1 LAN IP 192 168 0 1 Display 1 ID 1 LAN IP 192 168 0 2 Display 2 ID 1 LAN IP 192 168 0 3 Dis...

Страница 20: ...s configured to so that Display 2 uses the IP address of Display 1 even though Display 2 is configured to use RS232 on the OSD Likewise the software is configured so that Display 4 uses the IP address of Display 3 The following image shows how this layout looks in the Summary window when configured Notice that Display 2 is configured in the software to use the LAN IP address 192 168 0 1 of Display...

Страница 21: ...figuration settings for individual displays can be made if necessary using the Connection panel In the following configuration example a 3x2 video wall that uses a LAN connection for communications to the first display and daisy chained RS232 from that display to the remaining 5 displays The number of rows and columns is entered In this example there are 3 columns and 2 rows Note To calibrate a si...

Страница 22: ... rest of the displays This display will also be the first one to be measured and calibrated when automatically performing these actions on all displays Next the order of remaining displays can be selected Again this selection determines how sequential IDs or IP addresses will be automatically assigned to the rest of the displays and the order of measurement and calibration Keep in mind that the au...

Страница 23: ... the video wall will use an RS232 daisy chain to communicate via the LAN connection on the first display Next the connection method for the remaining displays must be selected Two options are available in this case because displays connected to the LAN can either have their own IP address and be connected to the LAN or they can be connected to the first display via daisy chained RS232 In this exam...

Страница 24: ... It is possible to see the resulting connection configuration by opening the Summary window In this example all 6 displays have been assigned the same IP address in the software even though only the first is actually connected to the LAN because all communications from the host PC will go through the LAN address of Display 1 Also note that each display has been assigned a sequential MONITOR ID The...

Страница 25: ...hen the Measurement process can be skipped For example if it is known from a previous set of measurements that all of the displays can achieve an Intensity of at least 400 cd m2 at a particular White Point then if a Target Intensity level of 300 cd m2 is used it would not be necessary to perform the Measurement step The following table shows some example typical calibration times for various sized...

Страница 26: ...of this window are shown below Calibration Target Shows the current Calibration Target settings Click Edit to open the Calibration Target Configuration dialog box used to modify Target settings Display layout diagram Shows a visual representation of the video wall layout Individual displays can be selected by clicking on a rectangle Actions panel Controls the main operations of the calibration pro...

Страница 27: ...rrently selected display is highlighted by a rectangle The layout including the number of rows and columns in the video wall and order of the displays is configured by using the Layout Wizard An individual display can be excluded from the current project by disabling it To disable a display right click within the rectangle and select Disable This feature can be used for example if the video wall l...

Страница 28: ...ve a match in both Intensity and White Point Use this option if you want all of the displays to match in both color and brightness All of the displays will only be as bright as the dimmest display Maximum Possible Per Display Calibrates all of the displays to the maximum possible luminance that each individual display can achieve and matches the white points on all displays Use this option if you ...

Страница 29: ...gamma value of 2 2 is popular for most applications DICOM Curve The response curve follows the DICOM Digital Imaging and Communications in Medicine specification This response curve is aimed at medical use however it can be used for other applications The goal of the DICOM response curve is to have a visually linear display response Custom Curve Advanced and custom response curves can be selected ...

Страница 30: ...ore perceptually uniform than a simple gamma value curve NTSC Video A curve based on the SMPTE 170M specification for NTSC that includes the offset transition and slope components SMPTE 240M A curve based on the SMPTE 240M specification for 1125 line HD video that includes the offset transition and slope components Custom curves can be created and imported into NEC Display Wall Calibrator by creat...

Страница 31: ...ordinates are automatically calculated and displayed for reference CIE xy chromaticity coordinates can be entered by selecting the CIE Coordinates radio button and entering the x and y values The corresponding correlated black body radiator temperature and Δuv Delta uv values are automatically calculated and displayed for reference The Delta uv value indicates how far the xy coordinates entered ar...

Страница 32: ...then it may be necessary to re detect it Note If the sensor was not attached when NEC Display Wall Calibrator was launched then it may be necessary to exit the NEC Display Wall Calibrator application and launch it again In some cases it may be necessary to re connect the USB sensor for it to be detected Model and Serial Number Shows the model and serial number of the currently selected calibration...

Страница 33: ...eve the target Intensity are done using the internal LUTs This may give a slightly lower calibrated Contrast Ratio and the display power consumption will always highest The calibration time is fastest for this method Do not adjust Brightness Control The Brightness control on the display will not be adjusted from the current setting Any adjustments necessary to achieve the target Intensity are done...

Страница 34: ...Preferences dialog Interface tab 34 NEC Display Wall Calibrator USER S GUIDE Luminance Units Selects the units that luminance values are displayed in Options are Candelas cd m Foot Lamberts fL ...

Страница 35: ... are measured There is no need to interact with the host PC while the displays are being measured with this option since the next display is selected automatically and the routine will wait until the color sensor is placed on the screen indicated This is useful if it is not convenient to have the host PC nearby for example when standing on a ladder Calibrate Selected This will calibrate the curren...

Страница 36: ...sted by clicking the Test button This will attempt to communicate with the display on the selected communications interface and Monitor ID Clicking the Update button will update the communications connection settings for the currently selected display in the layout Note If changes have been made but the Update button has not been clicked then the changes will be lost if another display is selected...

Страница 37: ... body radiator temperature of the measurement in Kelvin The Δuv Delta uv value indicates how far the measurement is from the blackbody radiator locus The Kelvin value is only meaningful for colors that are near the black body radiator locus such as most shades of white This feature can be used together with the Test Patterns tool to verify the calibration accuracy of a display In this case the Cal...

Страница 38: ...ated White pattern is only available if the display has been calibrated and shows the adjusted white after calibration It is useful to visually evaluate the calibration accuracy Clicking Off will turn off the test patterns The Test Patterns can either be shown on the selected display or all displays by selecting the appropriate setting in Apply to Note Since there is a slight color shift with view...

Страница 39: ...on Settings Will re configure displays with the settings from the last calibration This can be useful to switch between different calibrations by loading different projects and restoring the calibration data to all of the displays Since the calibration settings are stored as part of the Project files entire wall calibrations can be restored as necessary by loading a Project file and using this fun...

Страница 40: ...This gives an indication as to the accuracy of the calibration compared to the Target value as well as how far the display needed to be adjusted from the native state in order to achieve the Target White Point The Intensity bar shows the measured value If the Target is a specific value then red arrows indicate this level on the bar Uncalibrated Shows the native or un calibrated measurement taken d...

Страница 41: ...can be applied to either a single display or to all of the displays in the current project by selecting either Selected Display or All Displays Display Settings dialog Power tab The Clock tab is used to set and report the internal real time clock in the display The internal clock can be set to the host PC s system date and time by clicking the Set to system date time button When Single Display is ...

Страница 42: ...f the video This operation should be performed whenever a new analog video signal is connected when a major change is made to the video wiring to the display or when a video amplifier or splitter is added to the video link Note It is essential that when this operation is performed a video signal that contains both pure black and pure white is being input White video should extend to each edge of t...

Страница 43: ...ted settings Select the video inputs to apply the calibrated settings to and click the Apply button Display Settings dialog Calibration tab The Status tab reports various aspects about the currently selected display This feature is not available when All Displays is selected Operating Hours Shows the number of hours that the currently selected display has been in operation Fan 1 2 and 3 Shows the ...

Страница 44: ...ty method is set to Specific Level and the calculated value is more than 5 lower than the Target then a yellow warning icon is shown to warn that the displays may not match in Intensity after calibration using the current Specific Level value and a lower value should be chosen Date Measured Shows the date and time that the un calibrated measurements were taken Operating Hours when Measured Shows t...

Страница 45: ... shows the Connection panel Calibration Target Hides or shows the Calibration Target panel Colorimeter Hides or shows the Colorimeter panel Display Measurements Hides or shows the Display Measurements panel Test Pattern Hides or shows the Test Pattern panel Status Hides or shows the Status panel Help menu About displays the About dialog box which shows the software version number Check for updates...

Страница 46: ...l Layout and Connections Use the Layout Wizard from the Edit menu to specify the number of displays their layout calibration order and connection method If necessary modify the connection settings for any display by using the Connection panel 6 Verify Communications Test the communications to all the displays by clicking the Verify All button on the Actions panel This will attempt to communicate w...

Страница 47: ...rate 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...

Страница 48: ...all Answer 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 cou...

Страница 49: ... other displays on the same chain have the same MONITOR ID Make sure that each display is connected via a NULL modem cable and that the correct IN our OUT socket on the display is used Make sure that no other application or process is using the specified COM port If using LAN Make sure that the IP address of each display is set correctly and that each display has a unique IP address Make sure that...

Страница 50: ...d or if a major change was made to the video wiring to the display or a video amplifier 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 specific patterns to be displayed on the video signal in order for the display to automati...

Страница 51: ...orMunki software is running and give the option of closing it automatically To use the ColorMunki software again after NEC Display Wall Calibrator has closed it you must run the colormunki exe application from the Startup menu in Windows If you are using the ColorMunki software version 1 1 0 or newer You must turn off the ColorMunki Service in the Windows Control Panel X Rite Device Services to al...

Страница 52: ... set the IP address of the display is not currently set to access the subnet that includes the display s defaults IP address it will be necessary to temporarily modify the network settings in order to assign the PC a temporary IP address and subnet so that the display can be accessed Once the display has been configured the PC network settings should be restored Open the Network Settings propertie...

Страница 53: ...owser It may take several refreshes before the display can be found Check if any firewall software or settings on the PC could be preventing access to the display s IP address Once the web page has appeared the display s IP address and subnet mask can be entered and updated in the display It is highly recommended to assign each display a static IP address so that the IP address will not be reassig...

Страница 54: ...m but is often referred to as just Candelas or Nits for sake of brevity CCFL Cold cathode fluorescent lamp used for the backlight on LCD display panels CIE The Commission Internationale d Eclairage International Commission on Illumination An organization that sets many of the standards used in color and color measurement CIE uv chromaticity coordinates Coordinates in the CIE uv color space which a...

Страница 55: ...f colors that a device can produce DICOM Digital Imaging and Communications in Medicine Foot Lamberts fL A unit of luminance One foot Lambert is equal to 1 Candela per meter squared divided by 10 76 π approximately 3 43 Gamma The relationship between the input video signal to a display monitor and the screen output luminance Typically the screen luminance follows a mathematical power function of t...

Страница 56: ...es networked computers and devices that have a common designated IP address routing prefix TCP IP Transmission Control Protocol Internet Protocol Tone Response Curve A graph representing the relationship between the input and output of a system or device In NEC Display Wall Calibrator Tone Response Curves represent the relationship between the intensity of a color within an application and the lig...

Страница 57: ...Copyright 2009 NEC Display Solutions Ltd All rights reserved USA and Canada www necdisplay com Europe www nec display solutions com Asia Pacific www nec display com ap contact ...

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