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26 | MULTIPROFILER - USER’S GUIDE

White Point adjustment wizard page

The

White Point

page is available with the

DICOM

and

Full

presets, and

Custom

Picture Modes. For all other Picture

Modes the white point is fixed to the value defined by the particular preset’s standard.

The white point of the monitor can

be altered using the wizard by either

clicking and dragging the positioning

control on the CIE xy diagram, or by

modifying the

CIE x

and

y

values.

Several standard white points are available and can be selected from the

Preset White Points

list.

The choice of white point will depend on the application and viewing environment.

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Содержание MultiProfiler

Страница 1: ...Version 1 0 05 User s Guide ...

Страница 2: ...logo Acrobat and Photoshop are trademarks of Adobe Systems Incorporated in the United States and or other countries Copyright 2010 11 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 NEC Display Solutions assumes no responsibility or liability for any...

Страница 3: ...nel 14 Color Vision panel 15 Settings panel 16 USB panel 18 Status panel 19 About Picture Modes 20 3 Picture Modes 20 Using the Color Configuration Wizard 22 4 Example Usage Scenarios 34 Color Managed Workflow with Print Emulation 34 5 Outside of MultiProfiler 40 Using ICC ColorSync Monitor Profiles 40 Using non Color Managed Applications 40 6 Frequently Asked Questions 41 7 Troubleshooting 43 Ins...

Страница 4: ...phics adapter Extreme care should be taken when using the DisplaySync Pro with certain USB devices such as flash memory sticks and hard drives as data can be lost or corrupted if the device is switched between upstream ports while write operations are being performed Always use the device eject function on the host PC before switching upstream ports with these types of devices Note This document c...

Страница 5: ...ot available since they far exceed the color gamut of the display Although MultiProfiler will allow the Picture Mode settings to be modified to include large color gamuts keep in mind that the actual color gamut of the display is smaller and will not be able to display colors outside of this gamut The PA231W display does not have an internal luminance stabilization circuit It is therefore not able...

Страница 6: ...phics and Intel graphics adapters Digital DVI or DisplayPort output is highly recommended See README file for details Video Color Depth At least 24 bit color Millions of colors At least 24 bit color Video Resolution Monitor native resolution highly recommended 1920x1080 1920x1200 2560x1440 or 2560x1600 depending on model Monitor native resolution highly recommended 1920x1080 1920x1200 2560x1440 or...

Страница 7: ...reating and customizing different custom Picture Mode configurations including controlling every aspect of the monitor such as the gamma characteristics color gamut white point and brightness Picture in Picture PIP configuration The powerful video processor in the MultiSync PA Series allows two video signals to be viewed at once in a secondary PIP or Picture by Picture PBP window configuration The...

Страница 8: ...shows the current settings and status of the monitor All of the features of MultiProfiler are accessed from this window Display listbox Selects the monitor to control if more than one is present Function list Selects different function panels Function panel Shows the controls for the currently selected function ...

Страница 9: ... Vision Emulation settings for simulating human vision deficiencies Settings This panel has controls for configuring the power indicator LED color and brightness Digital Uniformity Correction and ICC profile generation Status This panel shows the current version of the software and the status of the currently selected monitor as well as providing an easy way to check if updates to the software are...

Страница 10: ...CI interface If a USB connection is detected the display name will be followed by USB in the listbox Select this to use the USB connection Note Some video graphics adapters may show several duplicate displays due to issues with the video drivers for that adapter In this case the duplicate displays can be selected to None Auto Configure Attempts to automatically detect and configure the display to ...

Страница 11: ...represents an absolute value The SpectraView Engine automatically calculates and compensates the brightness value as color settings such as white point are changed The Brightness control will indicate when any range limits have been reached that impact the screen performance Note On the MultiSync PA231W model the Brightness and Black Level controls are shown as percentages instead of absolute lumi...

Страница 12: ...e update the black level based on the ambient light sensor reading Reduced CR Is shown when the Brightness control is set to a level where it impacts the Contrast Ratio of the screen image This occurs when the brightness setting is below that which can be controlled using the LCD CCFL backlights alone When this range is entered the monitor will automatically begin to reduce the brightness to the r...

Страница 13: ...ore details Response Improve Selecting the Response Improve setting helps reduce blurring that can occur in fast moving images Metamerism correction Selecting the Metamerism correction setting can improve the white point color matching when the monitor is used side by side with a standard color gamut monitor This feature compensates for the way the human eye perceives colors slightly differently c...

Страница 14: ... shown at the top and bottom of the screen PBP Aspect Picture By Picture The secondary picture appears next to the main screen area and the main screen is sized to half of the entire screen area The aspect ratio of both screen images are maintained from their original Video Input is used to select the video input to be shown on the PIP window A red arrow in the list indicates the current video inp...

Страница 15: ...iciency can adequately perceive the color differences Click the corresponding selection to activate the different emulation modes The monitor can emulate color vision dichromacy types P Protanopia D Deutanopia T Tritanopia Additionally a Grayscale mode can be used for evaluating contrast legibility Note 2 Dual 3D LUT limitation The MultiSync PA Series SpectraView Engine is limited to using one set...

Страница 16: ...e this pattern to easily judge the impact of the Digital Uniformity Correction level on the uniformity or evenness of the screen See the following section for a more detailed description of how the Digital Uniformity Correction feature works When Automatically create and manage ICC display profiles is selected MultiProfiler will create an ICC ColorSync profile for the current Picture Mode and auto...

Страница 17: ...r than oth ers This is done for red green and blue so that uniform color as well as brightness is achieved As a consequence of this correction the maximum brightness or luminance from the display is reduced when this feature is used The level of Digital Uniformity Correction that is applied to the display can be controlled using the Correction Level control and should be set to a level that gives ...

Страница 18: ...th 3 downstream outputs and dual upstream input USB ports The dual upstream USB ports allows the integrated USB hub to switch between two different host PCs Devices connected to the USB outputs on the monitor will be switched between the two up stream ports This switching can be linked to the video input selection on the monitor so that as the video input is switched from one host PC to the other ...

Страница 19: ...e monitor to make sure that the modes listed in MultiProfiler reflect those of the monitor During this process the screen will flash and change color for approximately 30 seconds For example if the monitor was manually adjusted using the On Screen Display controls then the monitor settings may become out of sync with those shown in MultiProfiler In this case use this feature to re synchronize the ...

Страница 20: ...es which can be used directly or modified as necessary These presets are sRGB AdobeRGB DCI REC BT709 DICOM High Brightness Full not available on the MultiSync PA231W or P241W models shown as DICOM Sim on the MultiSync PA231W model In addition to the preset modes there are 3 or 5 depending on the monitor model special Custom Picture Modes which can be fully customized and given a custom name of up ...

Страница 21: ...gs for brightness black level and other settings depending on the Picture Mode For example it is possible to create two sRGB picture modes but with different brightness settings This would for example allow for easy switching of brightness levels if the monitor is used in a bright environment during the day but a dark environment at night The color settings for each Picture Mode can be configured ...

Страница 22: ...o determine which color characteristics are fixed or adjustable for each type of Picture Mode The choice of which Picture Mode preset or custom mode to select will depend on the application For example the Presets sRGB and AdobeRGB offer quick access for creating a Picture Mode with the color characteristics specified by each standard which will be suitable for many applications Other Picture Mode...

Страница 23: ...e curve will follow a simple gamma curve Values between 0 5 and 4 0 can be entered A gamma value of 2 2 is commonly used 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 visuall...

Страница 24: ...use such a wide color gamut and in these cases the Color Gamut control can be used to manipulate the color gamut size and shape In other instances it is desirable for the monitor to behave as though it has an even larger color gamut than it actually has In this case colors that lie outside the displayable range of the LCD panel will be clipped to the nearest displayable color An example is the DCI...

Страница 25: ...SMPTE C sRGB and EBU ITU PAL SECAM are suitable Note Although a preset for NTSC 1953 is available do not use it for video applications because this color gamut although defined as part of the original NTSC 1953 specification was never actually implemented in practice SMPTE C or sRGB should be used instead The sRGB and CRT Display presets are suitable for emulating the color gamut of a traditional ...

Страница 26: ... the value defined by the particular preset s standard The white point of the monitor can be altered using the wizard by either clicking and dragging the positioning control on the CIE xy diagram or by modifying the CIE x and y values Several standard white points are available and can be selected from the Preset White Points list The choice of white point will depend on the application and viewin...

Страница 27: ...lly calculates and compensates the brightness value as color settings such as white point are changed The Black Level slider and spinbox controls adjust the luminance of black on the screen and are set as an absolute value in Candelas per square meter cd m Selecting the Ambient Light Compensation will enable the light sensor located on the front of the monitor The current measured ambient light le...

Страница 28: ...play In this mode the monitor can be made to emulate another monitor by using the ICC ColorSync profile of that monitor to set the Gamma White Point Color Gamut and Brightness This can be useful for applications in which the monitor needs to emulate the color characteristics of another type for legacy purposes Print Emulation In this mode the monitor can emulate the output of a printer by using th...

Страница 29: ...Picture Modes that was selected when the wizard was started About Custom Picture Modes There are 5 available Picture Modes that can be selected from the Picture Mode page in MultiProfiler Each of these Picture Modes can be customized to either be a preset such as sRGB or AdobeRGB or as a Custom mode Depending on the display model there are either 3 or 5 memory locations in which to store Custom mo...

Страница 30: ...pace ICC ColorSync profiles installed on the system is shown The color characteristics and information about the currently selected profile in the list is shown on the page Select the desired profile from the list or click Add from other location to read a profile from a location other than the default system profile locations MultiProfiler will read the color characteristics from the ICC ColorSyn...

Страница 31: ...printer The View 3D LUT selection will open a separate window to show the 3D LUT created by MultiProfiler using the current settings This is useful to visualize how the color gamut of the monitor is altered to emulate that of the printer About 3D Look Up Tables LUTs The SpectraView Engine in the NEC MultiSync PA Series monitors allows complex color gamuts such as those of color printers to be emul...

Страница 32: ...tead of being the brightest white that the monitor can produce It also simulates how dense black appears on the paper The Display Gamut selection is used to select the color gamut that the monitor will normally be used in when not performing a print emulation This is used to calculate how colors must be transformed to display correctly even if the monitor is not being used in it s Full Native colo...

Страница 33: ... can not use the standard Adobe CMM The Adobe CMM is available for download for Mac OS and Windows from Adobe at http www adobe com downloads 3D LUT sub window The 3D LUT sub window can be shown during the Print Emulation configuration by selecting View 3D LUT This window shows a three dimensional representation of the Look Up Tables that are created based on the current printer profile and settin...

Страница 34: ...ure modes will be created one for normal viewing and one for the print emulation preview The two modes can be toggled using MultiProfiler or using the monitor s OSD controls Note Since both of the modes being created are based on using the same full color gamut of the display it is acceptable to switch between picture modes using the OSD controls on the monitor because the ICC ColorSync profile is...

Страница 35: ...e Full preset Click Next to move to the next wizard page On the Display Gamma page select Gamma Curve Value and enter 2 2 Click Next to move to the next wizard page On the Color Gamut page select Native Gamut from the list Click Next to move to the next wizard page ...

Страница 36: ...ons Click Next to move to the next wizard page On the Brightness and Black Level page adjust the brightness to a comfortable level If you are viewing prints next to the display monitor you can adjust the brightness level to be similar to the lighting on the printer paper Click Finish to complete the wizard The new Full Picture Mode will appear on the Picture Mode panel buttons ...

Страница 37: ...ings In this example the second Picture Mode is selected The settings for this mode will be replaced by the edits made next Click Edit to start the Color Configuration Wizard On the Introduction page select Custom Click Next to move to the next wizard page On the Select Custom type page select Print Emulation Click Next to move to the next wizard page ...

Страница 38: ... a Perceptual rendering intent is used which is best for photographic images This selection must match the settings in the application being used to make the prints To preview the brightness and ink density of the printer paper and ink combination select Simulate Paper and Black Ink Since the normal viewing mode created earlier is using the full color gamut of the display select Full Native for th...

Страница 39: ...v2 entered Click Next to move to the next wizard page On the Brightness and Black Level page adjust the brightness to a comfortable level If you are viewing prints next to the display monitor you can adjust the brightness level to be similar to the lighting on the printer paper Click Finish to complete the wizard The new custom SWOP v2 Picture Mode will appear on the Picture Mode panel buttons The...

Страница 40: ... where the monitor profile can be selected MultiProfiler will automatically create and associate the generated ICC ColorSync monitor profiles with the system s Color Management System Refer to the instructions for the particular software package being used to determine how to correctly load and use the ICC ColorSync monitor profiles generated by MultiProfiler The ICC ColorSync monitor profiles gen...

Страница 41: ...cted on the Print Emulation pages of the Color Configuration Wizard So for example if you selected that the Display Gamut is sRGB then the profile created will reflect a color gamut of sRGB Question How does the monitor calculate colors and luminance values Answer NEC MultiSync PA Series monitors are individually factory calibrated using a highly accurate lab grade color measurement device This ca...

Страница 42: ...42 MULTIPROFILER USER S GUIDE ...

Страница 43: ...the USB display from the list so MultiProfiler will use the USB connection instead of DDC CI When using DDC CI instead of USB Some video graphics adapter cards may not support the necessary functions for MultiProfiler to communicate with the monitor For Windows systems verify that the video graphics adapter is supported by MultiProfiler by checking the Windows Graphics Chipset Compatibility Inform...

Страница 44: ...or This process needs to be done once each time the user who created the last ICC profile for the display is changed This issue may also occur if another application is currently using the ICC profile For example if the Windows Advanced Display Settings control panel is open the ICC profile may be locked Be sure to close any applications that may be using the profile If you are not an administrato...

Страница 45: ... calibrated devices Candelas cd An international unit of light intensity Luminance can be described in units of Candelas per meter squared cd m but is often referred to as just Candelas or Nits for sake of brevity 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 Lab A color...

Страница 46: ...agenta Yellow and Black Note that Black is referred to using K to avoid confusion with blue 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 MultiProfiler Delta ...

Страница 47: ...ICM The Color Management System built into the Microsoft Win dows operating systems Intensity Intensity specifies the luminance or brightness of white when displayed on the screen Kelvin An absolute temperature scale denoted by K Zero Kelvin 0K is equivalent to 273 Celsius Lab See CIE Lab LED Light Emitting Diode LCD Liquid Crystal Display Lightbox An enclosure with controlled lighting conditions ...

Страница 48: ...of Previewing on a display monitor what an image will actually look like when print ed on a particular printer Subtractive Primaries Cyan magenta and yellow colors such as dyes or inks that subtract light reflecting off objects giving the appearance of color For example magenta ink subtracts green light When combined together cyan magenta and yellow produce black Tone Response Curve A graph repres...

Страница 49: ...opyright 2010 11 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 Australia www nec com au ...

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