Version 1.1.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Software Updates Occasionally updates and enhancements to the NEC Display Wall Calibrator software will be made available. Visit the NEC Display Wall Calibrator section of the NEC DISPLAY SOLUTIONS web site to check for availability, or use the Check for updates feature in the software to automatically see if a newer version is available. NEC DISPLAY SOLUTIONS welcomes feedback and suggestions for product improvements.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE HARDWARE LIMITED WARRANTY (U.S.A.
| Table of Contents Contents Precautions: . . . . . . . Note: . . . . . . . . . . Supported Display Monitors . System Requirements . . . What’s new in this version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
| Table of Contents Connection panel. . . . . . . . . . . . . . . . . . . . . Calibration Target panel. . . . . . . . . . . . . . . . . . Colorimeter panel . . . . . . . . . . . . . . . . . . . . Test Pattern panel. . . . . . . . . . . . . . . . . . . . Reset panel . . . . . . . . . . . . . . . . . . . . . . . Display Measurements panel . . . . . . .
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Precautions: • The LCD display monitor screen is fragile and can be easily damaged if force is applied. Even slight forces applied to the screen can cause temporary color distortions that can impact the calibration process. • Never use suction cups to attach a color sensor to the display.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Supported Display Monitors NEC Display Wall Calibrator supports the following NEC display monitor models: • LCD4020 – 40” LCD monitor 1 2 • V652 and V652-TM – 65” LCD monitors • LCD4620 – 46” LCD monitor 1 2 • V801 and V801-TM – 80” LCD monitors • LCD5220 – 52” LCD monitor 1 2 • X401S – 40” LCD monitor • LCD6520 – 65” LCD monitor 1 2 • X431BT – 43” LCD monitor 2 • M40, M40B, and M40-2 – 40” LCD monitors 1 2 • X461HB – 46” LCD monitor 2 • M46, M46B, a
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE System Requirements NEC Display Wall Calibrator has the following system requirements: ÿ Operating System Microsoft Windows Microsoft Windows XP, XP x64, Windows Server 2003, Mac OS Mac OS 10.5 and higher. Only Intel based Macs are supported. Windows Vista (32 or 64 bit), Windows 7 (32 or 64 bit), Windows 8 or 8.1 (32 or 64 bit). Display Resolution 1024x768 minimum. 1280x1024 recommended.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE What’s new in this version This version of NEC Display Wall Calibrator has the following new features and functionality since version 1.0.25: • Support for the new generation of display models with LAN daisy-chain connections - The latest generation of displays feature a LAN daisy-chain connection for communications using standard Cat-5 or higher LAN cables.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Chapter 1 Introduction to NEC DisplayWall Calibrator Overview The aim of the NEC Display Wall Calibrator system is to automatically adjust multiple displays used in a video wall so that the color characteristics closely match, thereby creating the visual illusion of a single large display. In order to accomplish this, the color characteristics of each display must be individually measured and compared to all of the other displays in the video wall.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Main Features and benefits NEC Display Wall Calibrator provides the following features and benefits: • Automatic calibration - NEC Display Wall Calibrator communicates with the display monitors directly using either RS232 or a LAN (Ethernet) connection (on supported models). All adjustments to the display settings are performed automatically using this communications link.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Chapter 2 Calibration Overview Introduction to display monitor calibration The screen image on color LCD displays is created by emitting white light from a backlight source such as cold cathode fluorescent lamps (CCFLs) or Light Emitting Diodes (LEDs) and then passing it through individual sub-pixels with red, green and blue filters which form each pixel on the screen.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Intensity Intensity specifies the luminance or “brightness” of white when displayed on the screen. The maximum Intensity value of a display will depend on many factors, such as, the color temperature of the White Point selected, the type of monitor, individual component tolerances, usage, and age of the display. Intensity can be measured and specified in units of either Candelas (cd/m²) or Foot Lamberts (fL) within the application.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE The choice of Intensity adjustment method will depend on the particular application and viewing environment. If the displays are being used in a bright environment, then the Intensity would generally need to be the maximum possible. So either Maximum Possible Matching or Maximum Possible Per Display would be used. White Point The White Point specifies the color of pure “white” on a display.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Contrast Ratio The Contrast Ratio of the display is the ratio of the measured Intensity to the measured Black Level. The Black Level is the luminance or “brightness” of black when displayed on the screen. For LCD monitors the minimum or native Black Level is typically fixed in ratio to the Intensity value due to the display technology.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Calibration Projects The NEC Display Wall Calibrator application uses Project files 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 final color characteristics of each display and when it was calibrated.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Chapter 3 Planning and Configuring a Wall Layout Planning Careful planning prior to installing, wiring, and configuring a video wall will help streamline the process. This chapter provides some insight into different configurations and the amount of time required to successfully calibrate a video wall.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE About Monitor IDs • Each display has a Monitor ID number that is used to individually identify and address it when used in a daisy-chain. • Each display in a daisy-chain must have a unique Monitor ID. • The Monitor ID is configured via the OSD. Models that support LAN daisy-chains can have the Monitor ID set automatically using the Auto ID function.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Direct LAN Supported display connection configurations RS-232C IN LAN1 RS-232C OUT LAN2 LAN RS-232C IN, OUT, and LAN RS-232C RS-232C IN, LAN 1 and LAN2 Models that have an RJ45 LAN connection can be individually connected directly to a LAN via a hub or switch instead of daisy-chaining displays together. This may require more wiring since each display is individually connected directly to a central LAN hub or switch.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE connected via LAN, the first display can forward commands received over LAN to other displays in the RS232 daisy-chain. • The RS232 connection from the host PC must connect to the RS232 IN on the first display. • Communications via both LAN and RS232 are not supported at the same time. The type of communications link to use to the display must be selected by OSD setting EXTERNAL CONTROL RS232C / LAN.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Using the Auto ID function with a LAN daisy-chain • The LAN2 RJ45 (output) of a display must connect to the LAN1 RJ45 (input) on the next display in a daisy-chain. • Each display must have a unique IP address assigned. • Network hub devices must not be used to create multiple branches of displays along the LAN daisychain. All displays must be connected sequentially.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Example: Daisy-chained RS232 with one COM port Supported display connection configurations RS-232C IN RS-232C IN RS-232C OUT RS-232C OUT RS-232C IN and OUT LAN RS-232C IN, OUT, and LAN In this example, the host PC has one RS232 COM port, and all displays are daisy-chained together via RS232. Each display must have a unique MONITOR ID since they are all on the same daisy-chain.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Example: Daisy-chained RS232 with multiple COM ports Supported display connection configurations RS-232C IN RS-232C IN RS-232C OUT RS-232C OUT RS-232C IN and OUT LAN RS-232C IN, OUT, and LAN In this example, the host PC has two RS232 COM ports, and there are two separate daisy-chains. Each display on a daisy-chain must have a unique MONITOR ID.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Example: Single IP LAN with daisy-chained RS232 Supported display connection configurations RS-232C IN RS-232C OUT LAN RS-232C IN, OUT, and LAN In this example, the host PC is connected to the first display via LAN. Subsequent displays are connected together using RS232 daisy-chaining. Each display on a daisy-chain must have a unique MONITOR ID. Important: The first display is configured to use LAN as the EXTERNAL CONTROL on the OSD.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Example: Direct Multi IP LAN Supported display connection configurations LAN1 RS-232C IN LAN2 RS-232C RS-232C OUT RS-232C IN, LAN 1 and LAN2 LAN RS-232C IN, OUT, and LAN In this example, the host PC and each display are individually connected to the LAN via hub. Each display has a unique IP address. Important: Models with only one LAN connection must be configured to use LAN as the EXTERNAL CONTROL on the OSD.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Example: Multi IP LAN using LAN daisy-chain Supported display connection configurations LAN1 LAN2 RS-232C RS-232C IN, LAN 1 and LAN2 In this example displays are daisy-chained together using LAN connections. The host PC is connected to the first display via the LAN1 RJ45 connection, and the LAN2 (output) is connected to the LAN1 (input) on the next display in the daisy-chain. Each display has a unique IP address manually assigned. Display 1 PC IP 192.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE This layout can be configured in the software in two different ways. 1. Direct (recommended) Since each display acts like a LAN hub, each can be addressed directly by using it’s IP address and Monitor ID. The software should be configured with the IP address and Monitor ID of each individual display. Commands for a particular display are sent directly to that display over the LAN connection.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Example: RS232 using LAN daisy-chain Supported display connection configurations LAN1 LAN2 RS-232C RS-232C IN, LAN 1 and LAN2 In this example, the host PC is connected to the first display via RS232. The displays are daisy-chained together using LAN connections. The LAN2 (output) is connected to the LAN1 (input) on the next display in the daisy-chain. Each display has a unique IP address assigned. Display 1 PC COM1 RS232 IN LAN2 ID 1 IP 192.168.0.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE 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. Connecting to displays wirelessly When calibrating video walls it may be advantageous to be able to freely move about without having wires connecting back to the displays.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Configuring a Layout with the Layout Wizard The Layout Wizard is accessed from the Edit menu and guides the user through the initial layout configuration for the video wall. The wizard will present different options based on the selected connection configuration, and the size of the video wall.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE The type of connection configuration available on the displays must be selected in order for the wizard to correctly guide the user through the available connection types. This can be done by either selecting the display model being used from the model list, or by directly selecting the type from the those shown in the connection configuration list. Selecting by display model will automatically select the correct connection configuration.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Next the number of rows and columns in the video wall is selected. In this example there are 3 columns and 2 rows. Note: To calibrate a single display that is not part of a video wall, enter a size of 1x1. Up to 30 rows or 30 columns can be selected, but the total number of displays cannot exceed 100. Click Next to move to the next page. Next the connection method from the host PC to the displays is selected.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Next the connection method of the other displays in the video wall is selected. In this example all of the remaining 5 displays in the video wall will use an RS232 daisy-chain to communicate via the LAN connection on the first display. Click Next to move to the next page. Next in this example, the IP address for the LAN connection on the first display must be entered.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Next in this example, the Monitor ID of the first display is entered. The remaining displays in the layout will be assigned sequential IDs. Click Next to move to the next page. Next the corner location of the first display in the layout will be selected. This should generally be the display with the lowest Monitor ID, or IP address, so that sequential IDs or IP addresses can be automatically assigned to the rest of the displays.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Next the order of remaining displays can be selected. 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 automatically assigned IDs or IP addresses can be modified later if necessary, as well as the measurement and calibration order. Click Next to move to the next page.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE The final page of the wizard shows a summary of the exact details of the video wall configuration, including the physical layout of all of the displays, the configurations and connections that need to be made to each individual display in the video wall, as well as useful information for troubleshooting the display communications connections and configuration if necessary. This information can be printed or saved to a PDF file for future reference.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Calibration Order After the Layout Wizard has been used to configure the layout of the video wall, the order in which operations such as measuring and calibrating displays can be modified using the Calibration Order function. The Layout Wizard will initially configure the order to be the same as the IP address or Monitor ID assignments.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE not be necessary to perform the Measurement step. The following table shows some example typical calibration times for various sized video walls: Wall Size Measurement Time (minutes) Calibration Time (minutes) Total Time (minutes) 2x2 2 16 18 4x4 8 32 40 5x5 12.5 50 62.5 6x6 18 72 90 Note: When measuring and calibrating the video wall, the software will automatically move to the next display once the current display has been completed.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Chapter 4 Dialogs, Settings and Menus Main NEC Display Wall Calibrator window The NEC Display Wall Calibrator window shows the current settings and status of the display calibration. All of the features of NEC Display Wall Calibrator are accessed from this window and the menus. Some of the main features of this window are shown below. Actions panel Controls the main operations of the calibration process.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE The main area in the window shows a visual representation of the current video wall layout. Each rectangle represents a display. The color of the rectangle shows the current status of a particular display. This coloring makes it easy to see the status even when viewing from a distance. Within each rectangle the displays sequence number is shown.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Edit Calibration Target Configuration dialog The Edit Edit Calibration Target dialog is accessed by clicking the Edit... button on the Calibration Target panel in the main NEC Display Wall Calibrator window, or by selecting Target... from the Edit menu. The Target defines the parameters for the calibration process and determines the color characteristics for calibrating each display.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE White Point White Point selects the Target white point for the calibration. Several popular industry standard White Point values, such as 9300K and D65, are provided. A custom white point can be specified by clicking the Edit... button to open up the Custom Color Temperature dialog.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Custom Gamma Curve dialog The Custom Gamma Curve dialog is accessed by clicking the Edit.. button in the Gamma Curve section of the Edit Calibration Target dialog. Advanced response curves can be selected from presets or custom curves can be created by importing a table of values. The following preset curves are available: • sRGB - A curve based on the sRGB specification that includes the offset, transition and slope components.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Custom White Point dialog The Custom White Point dialog is accessed by clicking the Edit.. button in the White Point section of the Edit Calibration Target dialog. A custom White Point can be created by either specifying it as a Black Body radiator temperature in Kelvin, as CIE (xy chromaticity) Coordinates, or by taking a measurement. Values between 2500K and 10000K may be entered in the Black Body K field.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Preferences dialog The Preferences dialog is accessed from the Edit menu, and is divided into 3 different tabs. The default settings for the entire Preferences can be restored by clicking the Defaults button. This includes any “Don’t show this again” messages that have been selected. Preferences dialog - Calibration Sensor tab Sensor Type - Selects the model of calibration sensor to use, and shows the current model being used.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Preferences dialog - Calibration tab Calibration and Profile Steps - Selects the number of measurement steps to take when calibrating the display. A larger number of steps will generally result in a more accurate grayscale calibration, but will increase the calibration time. 16 steps is the recommended setting for most applications.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Extended luminance stabilization time - Increases the waiting time for the display to stabilize while the luminance is being adjusted by using the Brightness control. This option can be used if necessary to increase the accuracy of the luminance adjustment when a Target with a Specific Level of Intensity is being used. It may significantly increase the calibration time, and is normally only useful when a very low intensity value is used.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Measure each display after calibration - Selecting this option will measure each display after it has been adjusted during calibration. This is for calibration analysis purposes only and will not impact the display calibration other than increasing the overall calibration time due to the increased number of measurements. Use this option only when asked to do so in order to provide calibration accuracy results for analysis purposes.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Panels Various Panels are available within the main window for controlling the operation of the software and for setting and viewing the status of various settings. Panels can be closed either by selecting them from the View menu, or clicking the close icon on each panel. Panels can also be rearranged and even moved outside of the main window if desired, by dragging the title bar of the panel.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Note: If one or more of the displays have already been calibrated, then if Calibrate All is clicked, the user will be asked if they want to calibrate just the remaining un-calibrated displays, or re-calibrate all of the displays. Visual Trim Selected - This feature can be used to manually make very fine color adjustments to the currently selected display by adjusting the color visually.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Connection panel This panel is used to modify the communications connection settings for the currently selected display in the layout. Connection types of RS232 or LAN (Ethernet) can be selected. Is using RS232, the RS232 COM port on the host PC used to communicate with the displays can be selected. Currently available COM ports on the host PC are listed in COM Port:. Otherwise, if using LAN, the IP Address of the display can be entered.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Colorimeter panel This panel allows measurements of colors displayed on the screen to be taken with the calibration sensor and the numerical results are displayed. To take color measurements using the Colorimeter, display a white image on the screen to be measured and place the calibration sensor on the screen. Then click the Measure button to take a single color measurement and display the results.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Test Pattern panel 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. Three patterns are available: 100% White, Calibrated White, and Visual Trim+Calibrated White. The 100% White pattern is native white with no correction applied by the calibration.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Reset panel This panel is used to reset and restore measurements and settings. Reset Measurement Data - Will clear all of the measurements taken during the Measurement phase of the calibration. Reset Calibration Data - Will clear all of the calibration data including measurements and adjustment settings. It will not reset any settings in the displays. Restore Calibration Settings - Will re-configure displays with the settings from the last calibration.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Display Measurements panel This panel shows the measured White Point values from the color sensor taken during the Measurement and Calibration operations. Both the White Point and Intensity (luminance) are shown as numerical values and graphically. The White Point shows the measured value compared to the Target White Point in CIE xy.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Tile Matrix Wizard dialog The Tile Matrix Wizard dialog is accessed from the Edit menu, and is used to automatically configure the Tile Matrix settings on all or some of the displays in the current project. The Tile Matrix feature can be used to divide and expand video sources over multiple displays using internal processing in each display. Tile Matrix Wizard Introduction.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE If the video wall is to be divided into multiple groups of displays then the displays in each group can be selected. First click on the square representing the top left display, then click on the one representing the bottom right display. Click Next to proceed to the next step. Note: If a video wall larger than 10 rows or columns is used, the maximum size of a Tile Matrix selection will be 10 rows or columns.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Display Settings dialog The Display Settings dialog is accessed from the Edit menu, and is divided into several different tabs representing different functionality. Various settings on the displays can be set and read from this dialog. Settings can be applied to either a single display, or to all of the displays in the current project by selecting either Apply To: Display or All Displays.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE By staggering the delay time between displays, a sudden large power rush can be avoided when the video wall is turned on. When All Displays is selected, the software will automatically calculate the staggered delay time for each display in the project according to the selected delay setting. Cooling Fan Control adjusts the cooling fan settings such as fan speed, temperature trigger point, and forced on or automatic operation.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Display Settings dialog - Input tab The Input tab is used to set and report the current video input selected on the display, and also the IR Control setting. When a single Display is selected the Video Input list shows the current video input being used by the display. The video input can be changed by selecting the desired input from the list. When All Displays is selected the Video Input list does not show the current video input.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Display Settings dialog - Video tab The Video tab is used to perform video signal and color adjustments. The following two controls are only available when analog video inputs such as VGA, RGB/HV, and OptionAnalog. It is not necessary to re-calibrate the displays after performing these operations.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Important: Changing the settings for these controls may impact the color accuracy and matching of the video wall color calibration. The Edge Comp controls adjust the edge mura compensation settings in the display (if supported). Display Settings dialog - Calibration tab The Calibration tab is used to apply the various calibration settings to video inputs other than the input that was selected when the display was calibrated.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Display Settings dialog - Status 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. Firmware Version and Firmware 2, 3, and 4 Version - Shows the version number(s) of the firmware in the display. Firmware 2, 3, and 4 Version is not available on all models.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Display Settings dialog - Tile Matrix tab The Tile Matrix tab can be used to configure the Tile Matrix settings for dividing and expanding a video source over multiple displays. Enable Tile Matrix - Is used to enable the Tile Matrix feature in each display. Matrix size - Is used the set the matrix size in rows and columns. Use Tile Comp - Enables the Tile Comp feature to compensate for the display bezel width when the video is divided.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Display Settings dialog - Size/Position tab The Size/Position tab can be used to configure the various video size and position settings in the display. When All Displays is selected, controls are not updated until the associated update button is clicked.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Display Settings dialog - IR Remote tab The IR Remote tab can be used to perform the equivalent operations as the physical IR Remote control using the software and communicating using the LAN or RS232 connection to the display. This is useful when it is not practical to use the actual IR Remote control with the display, or when it is necessary to access controls by remote that are not available from within the software.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Display Settings dialog - Advanced Analog tab The Advanced Analog tab can be used set special video adjustment patterns used to assist with manual adjustment of the analog video input levels. This advanced feature should only be used in cases where: 1. The Calibrated White test patterns match satisfactorily, but a white analog video signal input does not.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Summary window The Summary window is accessed from the View menu. This window shows the current layout configuration and connections, as well as detailed information about the calibration results. Connection Summary: Port - Shows the Communications Port to the display, either the RS232 COM Port, or LAN IP Address. Monitor ID - Shows the Monitor ID used to identify the display monitor. Model - Shows the model of the display monitor.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Target Intensity value when calibrated. Actual Calibrated White Point – Shows the white point that the display was adjusted to after calibration. Date Calibrated - Shows the date and time when the calibration was performed. Operating Hours when Calibrated – Shows the number of hours the display has been in operation when the calibration was performed.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Menus File menu New Project - Creates a new project and erases all of the current data. Open Project... - Opens an existing Project file. Save Project - Saves the current Project to a file. Save Project As... - Saves the current project with a new file name. Generate ICC Display Profile... - Generates an ICC Display Profile for the currently selected display. Exit - Closes the application.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Chapter 5 Quick Start Guide 1. Install Software Install the NEC Display Wall Calibrator software on the host PC. The serial number provided on either the CD-ROM cover, or with your purchase will be required to install the software. 2. Connect color sensor Connect the color sensor to a USB port on the host PC and verify the drivers are installed correctly. 3. Warm up displays Power-on each of the displays in the video wall.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE If Maximum Possible Matching is selected as the Intensity adjustment method in the current Calibration Target, it 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.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Chapter 6 Frequently Asked Questions Configuration Question: Can I use NEC Display Wall Calibrator to calibrate a single display? Answer: Yes. Use the Layout Wizard to create a layout with a 1x1 video wall, and calibrate as normal. Question: How can I configure a video wall that is not rectangular in shape? Answer: Create a layout with the maximum number of rows and columns of displays.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE 3. 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. 4. 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. 5.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Chapter 7 Troubleshooting Installation and Setup Problem: Measure and Calibrate buttons are disabled. Solution: The Measure and Calibrate buttons are disabled for any of the following reasons: • No supported calibration sensor was detected. • No supported display monitor was detected. • All of the displays have not yet been Verified. Problem: Verify Communications operation fails.
| 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 configured.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Color Sensor Problem: Software is unable to detect the X-Rite ColorMunki Solution: If the X-Rite ColorMunki software is installed, it will prevent NEC Display Wall Calibrator from accessing the device even if the main ColorMunki application is not currently running. If the ColorMunki software prior to version 1.1.0 is being used • NEC Display Wall Calibrator will detect if the ColorMunki software is running and give the option of closing it automatically.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Chapter 8 Assigning an IP address Displays connected via LAN need to be assigned an IP address so that they can be remotely accessed. Each display with a LAN interface has a default IP address of 192.168.0.10. This address must be changed in order to avoid conflicts when other displays are connected to the LAN. When the LAN RESET operation is performed on a display’s OSD, the IP address will be reset to the default value.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Next enter a temporary IP address for the PC, such as 192.168.0.255, and a subnet mask of 255.255.255.0. Click OK and close the Network Settings. Next open a web browser and go to the URL of the display’s web server by entering: http://192.168.0.10 This should display the display’s MONITOR NETWORK SETTINGS page. If this page can not be reached: • Confirm that the display is powered on and connected to the PC either directly or via a HUB.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Chapter 9 Calibration Determination Flowchart The following flowchart outlines the basic steps in determining if the displays should be recalibrated and if the analog video setup procedures should be performed.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Chapter 10 Visual Trim function The Visual Trim function allows minor adjustments to be made the to the results of the calibration process in order to improve the visual matching of the displays in the video wall if necessary. This feature can be used in cases where the automatic calibration was not accurate enough, and some visual differences between displays can be seen with the human eye.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE The Backlight Brightness slider adjusts the brightness of the LCD backlight instead of scaling the red, green and blue video levels. Note that large adjustments to the backlight brightness may take several minutes to stabilize. The range of adjustment using the backlight is much more limited than using the other brightness control. Adjusting this control will impact the power used by the display.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Chapter 11 Advanced Analog Adjustment function Overview The Advanced Analog Adjustment function is intended to assist with the manual adjustment of the analog video levels in cases where the automatic adjustment is not accurate enough.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Mode button. If the Analog Offset Base and Analog Gain slider controls are enabled, then the display model supports adjustment of the settings via software, and skip to step 6. Otherwise the controls must be adjusted via the OSD. 4. Use either an IR remote or the IR Remote emulation (see other tab) to display the OSD. If the Expert Mode OSD has been successfully enabled, the OSD will show “EXPERT” in the top right corner.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Hint: If no noise is visible on the screen after adjusting the OFFSET BASE controls through the entire control ranges, check that a black signal is being input. Examples: Some red noise - OFFSET BASE 01 (Red) value almost correct, but 02 (Green) and 03 (Blue) are not close. Yellow noise - OFFSET BASE 01 (Red) and 02 (Green) correct, but 03 (Blue) is not close. Bright white noise - OFFSET BASE 01 (Red), 02 (Green), and 03 (Blue) are correct. 8.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE If a color shows as dim but noiseless, it indicates the current setting value is too high, and should be reduced. Hint 1: The edges of the screen may be very different from the center. Concentrate on the noise at the center of the screen. Hint 2: In some cases it may be difficult to find the correct level when only adjusting one color. Try adjusting another color then go back to first color.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Chapter 12 Calibration Method Comparison Overview The software provides two different methods of adjusting the displays to achieve the desired calibration target settings. The method used for the calibration is selected in the Preferences on the Advanced tab. The options are: • Use LUTs - Uses LUTs (Look Up Tables) in the display to adjust the white point and grayscale correction. It uses an internally generated test pattern when measuring the display.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Feature LUT Method RGB Gain Method Comment Full Grayscale Calibration Yes. No. Uses factory adjustment. Use LUT Method if very accurate Grayscale tracking is necessary. Uses internal test patterns for calibration Yes. No (requires 100% white signal source to be input.) Gamma Setting Custom Gamma Curves and variable gamma values. 2.2, 2.4, and Native Gamma only. Use LUT Method if a non-standard gamma is necessary.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE Glossary Achromatic – Neutral in color (having no hue). Additive Primaries – Red, green, and blue light that when combined in different relative intensities produces different colors. (See also Subtractive Primaries) Backlight – the internal light source for a Liquid Crystal Display, such as fluorescent lamps or array of LEDs (Light Emitting Diodes). Blackbody – A hypothetical object that absorbs all incident radiation, thus any radiation (e.g.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE D Illuminants – CIE Daylight Standard Illuminants based on approximating daylight. The subscript denotes the correlated color temperature of the illuminant. For example, D50 has a correlated color temperature of 5000K. Delta-E (Δ-E) – A measurement of how different two colors are to each other. In NEC Display Wall Calibrator, Delta-E values are derived by calculating the distance between two colors in Lab color space using the CIE 94 formula.
| NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE such as gray). For example, red is a saturated color, while pink is less saturated, and white has no saturation. Subnet – A subnetwork, or subnet, describes 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.
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