User`s guide

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Version

1.1.04

User’s Guide

Summary of content (52 pages)

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Version 1.1.
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| SPECTRAVIEW II - USER’S GUIDE Software Updates and Feedback Occasionally updates and enhancements to the SpectraView software will be made available. Visit the SpectraView II section of the NEC DISPLAY SOLUTIONS Internet web site to check for availability. NEC DISPLAY SOLUTIONS welcomes feedback and suggestions for product improvements. Please use the feedback from on the SpectraView section of the NEC DISPLAY SOLUTIONS Internet web site.
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| SPECTRAVIEW II - USER’S GUIDE HARDWARE LIMITED WARRANTY NEC DISPLAY SOLUTIONS warrants the SpectraView II Hardware (hereinafter “Product” or “Products”) to be free from defects in material and workmanship and, subject to the conditions set forth below, agrees to repair or replace (at NEC DISPLAY SOLUTIONS’s sole option) any part of the enclosed unit which proves defective for a period of three (3) years from the date of first consumer purchase. Spare parts are warranted for ninety (90) days.
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SPECTRAVIEW II - USER’S GUIDE Contents Precautions: . . . . . . . . . . . . . . . . . 6 Supported Display Monitors. . . . . . . . . . . . 7 System Requirements . . . . . . . . . . . . . . 8 1 Introduction to SpectraView II 9 Overview . . . . . . . . . . . . . . . . . . . 9 Main Features and benefits . . . . . . . . . . . 9 2 Dialogs, Settings and Menus Main SpectraView II window . . . . . .
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6 Frequently Asked Questions 41 Calibration . . . . . . . . . . . . . . . . . 41 7 Troubleshooting 43 Installation and Setup. . . . . . . . . . . . . 43 Using SpectraView with NaViSet Administrator . . .
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| SPECTRAVIEW II - USER’S GUIDE Precautions: • The LCD display monitor screen is fragile and can be easily damaged if force is applied. Never use suction cups to attach a color sensor to the display. Always use the supplied cable or sling and counterweight to gently rest the color sensor on the face of the display. • During the display calibration procedure, highly sensitive light measurements are made on the screen using the color sensor.
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| SPECTRAVIEW II - USER’S GUIDE Supported Display Monitors SpectraView II supports the following NEC display monitor models: • LCD1980SXi – 19” LCD monitor • LCD1980FXi – 19” LCD monitor • LCD1990SX – 19” LCD monitor • LCD1990SXi – 19” LCD monitor • LCD1990SXp – 19” LCD monitor • LCD2090UXi – 20” LCD monitor • LCD2180UX – 21” LCD monitor • LCD2180WG-LED – 21” LED wide color gamut LCD monitor • LCD2190UXi – 21” LCD monitor • LCD2190UXp – 21” LCD monitor • LCD2490WUXi – 24” LCD monitor • LCD2490WUXi2 – 2
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| SPECTRAVIEW II - USER’S GUIDE System Requirements SpectraView has the following system requirements: Mac OS ÿ Microsoft Windows Operating System Apple Mac OS X v10.3.9 or higher. Microsoft Windows 2000, XP, XP x64, Mac OS 10.5.2 or higher required for Server 2003, Vista and Vista x64, Windows some Mac models. See README file 7 and Windows 7 x64. for details. Video Graphics Adapter All Apple standard video graphics cards, including most newer PowerBooks.
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| SPECTRAVIEW II - USER’S GUIDE 1 Introduction to SpectraView II Overview Designed for professionals with color critical applications, SpectraView II combines the award winning NEC display monitor technology with a color measurement sensor and sophisticated software. The result is highly accurate, reliable, repeatable, and feature rich display calibration and profiling solution. The SpectraView system uses a color sensor to take color measurements of the display screen during calibration.
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| SPECTRAVIEW II - USER’S GUIDE calibration settings and status of displays on a LAN. This feature is particularly useful for large installations where central monitoring and asset management is needed. • Monitor locking - Once calibrated the OSD (On Screen Display) controls for the display monitors can be locked to prevent accidental or unauthorized adjustment which may invalidate the calibrated state of the monitor.
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| SPECTRAVIEW II - USER’S GUIDE 2 Dialogs, Settings and Menus Main SpectraView II window The SpectraView II window shows the current settings and status of the display calibration. All of the features of SpectraView are accessed from this window and the menus. Edit Target Opens the Calibration Target Configuration dialog box used to modify Target settings. Targets listbox Selects an existing Target setting. Targets that have been calibrated have green check mark.
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| SPECTRAVIEW II - USER’S GUIDE Target Settings The Target Settings group shows the current calibration Target parameters for the currently selected display monitor. The Target Settings can be modified, saved and loaded using the Edit, Open and Save buttons. The Target listbox shows all of the available Targets. When the display has been calibrated to a particular Target, a green check mark appears next to the Target name, indicating that the calibration is available.
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| SPECTRAVIEW II - USER’S GUIDE Display Configuration button (ÿ Windows version only) opens the Display Configuration dialog which is used to configure SpectraView II if more than one display is used on the system. See the following section. Display Configuration dialog ( ÿ Windows version only) This Display Configuration dialog is accessed either from the Edit menu, or by clicking on the Display: Configure button in the main SpectraView window.
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| SPECTRAVIEW II - USER’S GUIDE Edit Calibration Target Configuration dialog The Edit Edit Calibration Target dialog is accessed by clicking the Edit Target button on the main SpectraView II window, or by selecting Target from the Edit menu. Custom Targets can be created using this dialog. After a new Target has been created, the display must be Calibrated to it. It is possible to share Target files with other users of SpectraView on both Windows and Mac OS platforms.
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| SPECTRAVIEW II - USER’S GUIDE Use Scale Factor - The DICOM response curve shape is based on the measured black level and Intensity. If the black level or Intensity of the display changes, then the shape of the DICOM response curve also changes. If a display is not expected to be re-calibrated for a period of several months, this feature can be used to increase the longevity of the DICOM calibration using the knowledge that the displays brightness will decrease slightly as it ages.
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| SPECTRAVIEW II - 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.
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| SPECTRAVIEW II - 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 interactive visual adjustment and measurement. Values between 2500K and 10000K may be entered in the Black Body K field.
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| SPECTRAVIEW II - USER’S GUIDE Note: Due to the technology limitations of the color sensor compared to the human eye, for some applications, it is sometimes better to visually match a white point using this interactive method, and then measure it using the color sensor. Preferences dialog The Preferences dialog is accessed from the Edit menu (ÿ Windows) and SpectraView II application menu ( Mac OS). It is divided into 5 different tabs.
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| SPECTRAVIEW II - USER’S GUIDE Preferences dialog - Calibration tab Calibration and Profile Steps - selects the number of measurement steps to take when calibrating and profiling the display. A larger number of steps will generally result in a more accurate grayscale calibration, but will increase the calibration time. 32 steps is the recommended setting for most applications.
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| SPECTRAVIEW II - USER’S GUIDE Preferences dialog - ICC Profile tab Generate ICC Profile after calibration - selecting this will automatically generate an ICC/ColorSync monitor profile after the display is calibrated. This option should be checked for most applications. Set as Windows Color Management System Monitor Profile (ÿ Windows version only) - selecting this will automatically associate the generated ICC monitor profile with the Windows Color Management System.
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| SPECTRAVIEW II - USER’S GUIDE Options are: • Automatic - the optimal setting based on the color sensor model and the display monitor type is automatically used. • Calibration Sensor - uses the values measured by the calibration sensor. For normal color gamut displays this is the recommended option since the calibration sensor can accurately measure these primary colors.
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| SPECTRAVIEW II - USER’S GUIDE Delay loading of SpectraView II Gamma loader on Windows Startup (ÿ Windows version only) - selecting this will delay the loading of the SpectraView II Gamma Loader when Windows starts by 60 seconds in order to allow other applications and utilities to initialize first. Select this option if you are experiencing monitor detection or video blanking issues only when the SpectraView II Gamma Loader runs as Windows starts.
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| SPECTRAVIEW II - USER’S GUIDE Information window The Information window is accessed from the Tools menu. It will also be automatically displayed after a display calibration is completed. Note: The graphs shown in the Information window can be panned, zoomed and scaled. Click and drag to select a zoom area. Use the arrow keys to pan. Size the dialog to scale the graphs.
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| SPECTRAVIEW II - USER’S GUIDE Primary Colors Red, Green and Blue CIE x,y - shows the measured color coordinates of the display’s primary colors. These values represent the color gamut of the display. The source of the color measurements will depend on the Primary Colors Chromaticity Source setting in the Preferences dialog. Display Luminance The Target values show the currently selected Target’s Black Level and Intensity.
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| SPECTRAVIEW II - USER’S GUIDE Information window - Color Gamut tab The Color Gamut tab graphically illustrates the color gamut of the display for comparison purposes as a 2D representation of the 3D color gamut volume. The display’s color gamut can be compared to the color gamut of several popular color spaces. The source of the color measurements for the display’s color gamut will depend on the Primary Colors Chromaticity Source setting in the Preferences dialog.
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| SPECTRAVIEW II - USER’S GUIDE Information window - Curves tab The Curves tab graphically illustrates the various tone response and correction curves measured and generated during the calibration process. Show Curve Type Target - illustrates the target tonal response curve of the currently selected Target. This display will be calibrated to match this curve. This curve will be disabled and not shown if the Target Gamma is set to Monitor Native Gamma.
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| SPECTRAVIEW II - USER’S GUIDE Information window - Color Tracking tab The Color Tracking tab shows graphically how well the grayscale (colors from black to white) of the display is conforming to the currently selected Target. Ideally all points along a grayscale measured on the display should have the same white point (chromaticity) and should follow the luminance curve of the Target.
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| SPECTRAVIEW II - USER’S GUIDE Information window - DICOM Conformance tab The DICOM Conformance tab shows graphically and numerically how well the calibrated display conforms to the ideal DICOM (Digital Imaging and Communications in Medicine) response when a DICOM Target curve of is used. The aim of the DICOM response is to have a perceptually linear luminance response. Each step along the display’s grayscale should have an equally perceptive increase in luminance.
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| SPECTRAVIEW II - USER’S GUIDE Contrast Response Max error - shows the highest percentage error deviation from the Barten Model curve, as well as the JND Index of the highest error point. Show Barten Model - shows the Barten Model curve on the graph. The Barten Model curve is calculated based on the measured Intensity (white luminance) and black level values. Show 10% Limits - shows two lines representing 10% error deviations from the Barten Model curve.
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| SPECTRAVIEW II - USER’S GUIDE Colorimeter window The Colorimeter tool allows measurements of colors displayed on the screen to be taken with the calibration sensor, and is accessed from the Tools menu. The measurement results are displayed in a variety of useful formats. To take color measurements using the Colorimeter, place the calibration sensor to the screen so that it is centered on the large white area in the Colorimeter window.
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| SPECTRAVIEW II - USER’S GUIDE Ambient Light Measurement window The Ambient Light Measurement tool allows measurements to be taken of the ambient light of the viewing environment around the display monitor. This feature is only available when using a supported color sensor.
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| SPECTRAVIEW II - USER’S GUIDE Monitor Settings window The Monitor Settings window provides access to some of the display monitor control settings, if supported by the display. The Power LED Indicator controls can be used to change the color of the LED, and also adjust the brightness. The brightness can be reduced as necessary in dim environments if the LED is distracting.
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| SPECTRAVIEW II - USER’S GUIDE Menus File menu Open Target... - opens a Target file. This is the same as clicking the Target Settings: Open button. Save Target As... - saves the current Target Settings to a file. This is the same as clicking the Target Settings: Save button. Calibrate... - starts the display monitor calibration routine for the currently selected display using the currently selected Target Settings. This is the same as clicking the Calibrate button. Generate ICC Profile...
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| SPECTRAVIEW II - USER’S GUIDE 3 Calibration Overview Introduction to display monitor calibration Computer display monitors display images by giving off light from the screen. On LCD display monitors, light is emitted from a backlight source such as fluorescent lamps or array of LEDs (Light Emitting Diodes) and passes through individual red, green and blue filters for each pixel on the screen.
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| SPECTRAVIEW II - USER’S GUIDE SpectraView includes several industry standard targets for a variety of applications: Target Name Application White Point CIE (x,y) Tone Response Curve (Gamma) Print Standard Commonly referred to as Proofing Standard. Used widely for the proofing of color transparencies or press output. D50 (0.346, 0.359) 1.8 Photo Editing Used for editing and previewing images in a controlled lighting environment. An Intensity of 140 candelas (cd/m²) is used. D65 (0.313, 0.
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| SPECTRAVIEW II - USER’S GUIDE About Targets SpectraView can also create custom Targets, which can then be exchanged with other SpectraView display users, providing identical calibrated displays.
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| SPECTRAVIEW II - USER’S GUIDE Intensity Intensity specifies the luminance or “brightness” of white when displayed on the screen. The maximum Intensity value of the display will depend on the color temperature of the White Point selected, the type of monitor and its age. The choice of Intensity value will depend on the application and viewing environment.
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| SPECTRAVIEW II - USER’S GUIDE 4 Using SpectraView Launching (Mac OS) Double click the SpectraView II application icon in the Applications folder. (Windows) Select SpectraView II from the NEC Display Solutions program group on the Windows Start menu. As SpectraView launches, it will automatically search for any supported displays, and a supported color sensor.
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| SPECTRAVIEW II - USER’S GUIDE Calibrating and Profiling the Display If more than one supported display monitor is connected, select the display to be calibrated from the Display listbox. Note that each display has an independent Target. Click the Calibrate button to start the calibration process. The software will provide instructions for placing the calibration sensor on the screen and provide updates as the calibration progresses.
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| SPECTRAVIEW II - USER’S GUIDE 5 Outside of SpectraView Using ICC/ColorSync Monitor Profiles The ICC/ColorSync monitor profiles generated by SpectraView are used to inform the Color Management System of the color characteristics of the display monitor. Color Management Systems use this information to determine how to display images on-screen. Depending on the image editing software package being used, profiles for printers and scanners can also be utilized to create accurate image prints and scans.
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| SPECTRAVIEW II - USER’S GUIDE 6 Frequently Asked Questions Calibration Question: How often do I need to calibrate my monitor? Answer: The answer will depend on how critical a color accuracy is necessary, how long the monitor is used per day, environmental conditions and the characteristics of each individual monitor. Some users working in highly critical color applications may calibrate their displays every couple of days. Others may only need to do it once a month.
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| SPECTRAVIEW II - USER’S GUIDE Question: Each time I calibrate my monitor I receive a different Delta-E result. Should I recalibrate again if I receive a value that is high? Answer: For Delta-E values of less than 2 there is almost certainly no need to recalibrate. For values higher than 3 it is important to understand what the cause is, and if it is significant.
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| SPECTRAVIEW II - USER’S GUIDE 7 Troubleshooting Installation and Setup Problem: Calibrate button is disabled. Solution: The calibrate button is disabled for either of the following reasons: • No supported calibration sensor was detected. • No supported display monitor was detected. See the following sections for further explanations. Problem: No supported monitor was detected. Solution: • Verify that the display monitor connected is a model supported by SpectraView II.
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| SPECTRAVIEW II - USER’S GUIDE Problem: No supported calibration sensor was detected. Solution: • Try reconnecting the calibration sensor and click the Auto Detect button in the Preferences dialog to re-detect the sensor. • It may be necessary to close and re-launch the SpectraView application. • (ÿ Windows) It may be necessary to install the drivers for the color sensor device. Note that only the drivers for the X-Rite iOne devices are installed by the SpectraView setup application.
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| SPECTRAVIEW II - USER’S GUIDE 8 NaViSet Administrator Using SpectraView with NaViSet Administrator ( ÿ Windows version only) The SpectraView II software integrates with the NEC DISPLAY SOLUTIONS NaViSet Administrator software to provide remote administration of the display monitors on networked machines. NaViSet Administrator will report all of the current SpectraView settings and the current calibration status within the NaViSet Administrator Console application.
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| 9 SPECTRAVIEW II - USER’S GUIDE Test Pattern Guide The SpectraView II software includes several test patterns that are useful in evaluating the monitor calibration. It is also good practice to use the Test Patterns to quickly visually verify the integrity of the calibration. A pattern based on the DICOM TG18-GC test pattern has a number of useful features that allow very detailed analysis of the monitor grayscale performance in one pattern. The main features of this pattern are described below.
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| SPECTRAVIEW II - USER’S GUIDE 10 MultiSync PA Series Information The SpectraView II software supports the MultiSync PA241W and PA271W monitors. These models feature a custom-designed color processor called the SpectraView Engine. This sophisticated processor, combined with internal luminance, temperature and time monitoring of the monitor, and individual characterization and calibration of each unit during production, results in an unparalleled level of color control, accuracy and stability.
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| SPECTRAVIEW II - 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.
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| SPECTRAVIEW II - USER’S GUIDE Color Separation – The separating of a color image into the cyan, magenta, yellow, and black color layers used for printing. Color Separation Tables – A set of conversion tables used to calculate the separating of RGB images into the CMYK layers necessary for printing. Color Space – A three dimensional representation of colors. Examples are RGB, CIE xyY, and CIE Lab. ColorSync – The Color Management System built into the Macintosh Operating System (Mac OS).
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| SPECTRAVIEW II - USER’S GUIDE 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 the input video signal, the exponent of which is called the gamma. Gamut – The range of colors that can be reproduced on a particular device such as a monitor or printer, or that can be distinguished by a sensing device such as a scanner or the human eye.
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| SPECTRAVIEW II - USER’S GUIDE PAL – Phase Alternation by Line. A standard for encoding video signals used in Western Europe and parts of Asia. Phosphors – Materials that emit light when struck by radiation of certain wavelengths. CRT displays use phosphors that give off red, green, and blue light to display an image on the screen. Profile – A file containing a description of the color characteristics of a device such as a monitor, printer, or scanner.