NEC SpectraViewII User's Guide
Version
1.1.20
User’s Guide
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Version
1.1.20
User’s Guide
English
2 | NEC 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
form on the SpectraView section of the NEC DISPLAY SOLUTIONS Internet web site.
Within Europe please visit the NEC Display Solutions Europe web site, www.nec-display-solutions.com.
Within Australia and New Zealand, please visit the NEC Australia web site, www.spectraview.nec.com.au.
Technical Support
For technical support with the SpectraView II product, please visit the SpectraView II section of the NEC DISPLAY
SOLUTIONS Internet web site and check for any Frequently Asked Questions that may help to solve the issue. An
online feedback from is available for submitting questions and feedback.
For technical Support within Europe please visit the NEC Display Solutions Europe web site, www.nec-display-solutions.
com, or by e-mail to spectraview@nec-displays.com.
For technical Support within Australia and New Zealand, please visit the NEC Australia web site, www.spectraview.nec.
com.au, or by e-mail to spectraview.support@nec.com.au. Sales support Tel : 131 632.
Trademarks and Copyright
SpectraView is a registered trademark of NEC Display Solutions of America, Inc.
Adobe, the Adobe logo, Acrobat and Photoshop, are either registered trademarks or trademarks of Adobe Systems
Incorporated in the United States and/or other countries.
Apple, Macintosh, ColorSync, Mac and the Mac logo are trademarks of Apple Computer, Inc., registered in the U.S. and
other countries.
Microsoft, Excel and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United
States and/or other countries.
Copyright © 2003-15 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 errors or inaccuracies that may appear in this manual.
All rights reserved. Your rights of ownership are subject to the limitations and restrictions imposed by the copyright laws
as outlined below.
It is against the law to copy, reproduce or transmit, including without limitation electronic transmission over any network,
any part of the manual except as permitted by the Copyright Act of the United States, Title 17, United States Code.
Under the law, copying includes translation into another language or format.
The above is not an inclusive statement of the restrictions imposed on you under the Copyright Act.
For a complete statement of the restrictions imposed on you under the copyright laws of the United States of America,
see Title 17, United States Code.
USA and Canada: www.necdisplay.com
Australia: www.spectraview.nec.com.au
Europe www.nec-display-solutions.com
Revision 150210
3 | NEC SPECTRAVIEW II - USER’S GUIDE
HARDWARE LIMITED WARRANTY (U.S.A. and Canada only)
NEC DISPLAY SOLUTIONS warrants the SpectraView II Color Sensor 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 one (1) year from the date of rst consumer purchase. Spare parts are warranted for ninety (90) days. Replacement
parts or unit may be new or refurbished and will meet specications of the original parts or unit.
This warranty gives you specic legal rights and you may also have other rights, which vary from state to state. This
warranty is limited to the original purchaser of the Product and is not transferable. This warranty covers only NEC
DISPLAY SOLUTIONS-supplied components. Service required as a result of third party components is not covered
under this warranty. Service required as a result of abuse or improper usage is also not covered under this warranty.
In order to be covered under this warranty, the Product must have been purchased in the U.S.A. or Canada by the original
purchaser. This warranty only covers Product distribution in the U.S.A. or Canada by NEC DISPLAY SOLUTIONS No
warranty service is provided outside of the U.S.A. or Canada. Proof of Purchase will be required by NEC DISPLAY
SOLUTIONS to substantiate date of purchase. Such proof of purchase must be an original bill of sale or receipt
containing name and address of seller, purchaser, and the serial number of the product.
NEC DISPLAY SOLUTIONS SHALL NOT BE LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL,
OR OTHER TYPES OF DAMAGES RESULTING FROM THE USE OF ANY NEC DISPLAY SOLUTIONS PRODUCT
OTHER THAN THE LIABILITY STATED ABOVE. THESE WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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 conguration, software, the application, customer data, and operator control of
the system, among other factors. While NEC DISPLAY SOLUTIONS Products are considered to be compatible with
many systems, specic functional implementation by the customers of the Product may vary. Therefore, suitability of a
Product for a specic purpose or application must be determined by consumer and is not warranted by NEC DISPLAY
SOLUTIONS.
Federal Communications Commission (FCC) Notice (U.S.A. Only)
WARNING: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the following measures:
• Reorient or relocate receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:
• This device may not cause harmful interference.
• This device must accept any interference received including interference that may cause undesired operation.
4 | Table of Contents
Contents
Precautions: . . . . . . . . . . . . . . . . 6
Supported Display Monitors . . . . . . . . . . . 7
System Requirements . . . . . . . . . . . . . 8
Introduction to SpectraView II 9
Overview . . . . . . . . . . . . . . . . . . 9
Main Features and benets . . . . . . . . . . 9
Dialogs, Settings and Menus 11
Main SpectraView II window . . . . . . . . . .11
Target Settings . . . . . . . . . . . . . . .12
Calibration . . . . . . . . . . . . . . . . . 12
Display . . . . . . . . . . . . . . . . . .13
Display Conguration dialog . . . . . . . . . . 13
Edit Calibration Target Conguration dialog . . . . 14
Custom Color Gamut dialog . . . . . . . . . . 17
Custom Gamma Curve dialog . . . . . . . . .19
Custom White Point dialog . . . . . . . . . . . 20
Preferences dialog . . . . . . . . . . . . . . 21
Information window. . . . . . . . . . . . . . 27
Colorimeter window . . . . . . . . . . . . .34
Ambient Light Measurement window . . . . . . . 35
Monitor Settings window. . . . . . . . . . . . 36
Update Internal Calibration window . . . . . . .37
Menus . . . . . . . . . . . . . . . . . . . 38
File menu . . . . . . . . . . . . . . . . .38
Edit menu . . . . . . . . . . . . . . . . . 38
Tools menu . . . . . . . . . . . . . . . . . 38
Help menu . . . . . . . . . . . . . . . . . 39
Calibration Overview 40
Introduction to display monitor calibration . . . . .40
About Targets . . . . . . . . . . . . . . . . 42
Gamma and Tone Response Curves (TRC) . . . . 42
White Point . . . . . . . . . . . . . . . . . 42
Intensity . . . . . . . . . . . . . . . . . . 43
Contrast Ratio. . . . . . . . . . . . . . . . 43
Color Gamut . . . . . . . . . . . . . . . . 43
6 Axis Color Trim . . . . . . . . . . . . . .44
Using SpectraView 45
Launching. . . . . . . . . . . . . . . . . . 45
Selecting a calibration Target . . . . . . . . . . 45
Modifying Targets . . . . . . . . . . . . . . . 45
Calibrating and Proling the Display . . . . . . .46
Proling the Display . . . . . . . . . . . . . . 46
Validating the current Calibration . . . . . . . . . 46
Outside of SpectraView 47
Using ICC/ColorSync Monitor Proles . . . . . . . 47
Adobe Photoshop Overview . . . . . . . . . . . 47
Frequently Asked Questions 48
5 | Table of Contents
Calibration . . . . . . . . . . . . . . . . .48
Troubleshooting 51
Installation and Setup . . . . . . . . . . . . . 51
Test Pattern Guide 54
SpectraView Engine Information 55
Using 6 Axis Color Trim 56
Features by Model 57
Glossary 59
6 | NEC 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. High ambient light levels such as direct sunlight on the screen, may
affect measurements and cause an inaccurate display calibration. Changes in ambient lighting can alter
how images on the screen are perceived. Locate the display away from bright direct lighting whenever
possible and keep a constant ambient lighting level.
• 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 SpectraView software is running.
• Always allow the display to warm up for at least 30 minutes before calibrating.
• Do not adjust the monitor color, brightness or contrast controls once it has been calibrated, otherwise
the color calibration of the monitor may become invalid.
• (Mac OS only) Do not use the ColorSync control panel to switch between different display monitor
calibrations by selecting different monitor color proles. Always use the SpectraView application to load
a previous monitor calibration. This is because all of the necessary color adjustments, including the
Look Up Tables, are stored in the display monitor and these must be set by SpectraView. The ColorSync
proles generated by SpectraView contain linear Look Up Tables for the video graphics adapter.
Note: This document covers the Mac OS, Windows, and Linux versions of the SpectraView II software. The features and functions
of all versions are identical unless noted otherwise. The majority of the User Interface screen images in this document show
the Mac OS version, however the Windows and Linux versions are identical in layout unless noted otherwise.
7 | NEC 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 – 24” LCD monitor
• LCD2690WUXi – 26” wide color gamut LCD monitor
• LCD2690WUXi2 – 26” wide color gamut LCD monitor
• LCD3090WQXi – 30” wide color gamut LCD monitor
• LCD4020 – 40” LCD monitor
• LCD4620 – 46” LCD monitor
• LCD5220 – 52” LCD monitor
• LCD6520 – 65” LCD monitor
• M40, M40B, and M40-2 – 40” LCD monitors
• M46, M46B, and M46-2 – 46” LCD monitors
• X431BT – 43” LCD monitor
• X461UN – 46” LCD monitor
• X462UN – 46” LCD monitor
• X461HB – 46” LCD monitor
• X651UHD – 65” Ultra-high-denition LCD monitor
• X841UHD – 84” Ultra-high-denition LCD monitor
• X981UHD – 98” Ultra-high-denition LCD monitor
• P401 – 40” LCD monitor
• P461 – 46” LCD monitor
• P521 – 52” LCD monitor
• P551 – 55” LCD monitor
• P701 – 70” LCD monitor
• P221W – 22” wide color gamut LCD monitor
• P232W – 23” LCD monitor
• P241W – 24” LCD monitor
• P242W – 24” LCD monitor
• PA231W – 23” LCD monitor
• PA241W – 24” wide color gamut LCD monitor
• PA242W – 24” wide color gamut LCD monitor
• PA271W – 27” wide color gamut LCD monitor
• PA272W – 27” wide color gamut LCD monitor
• PA301W – 30” wide color gamut LCD monitor
• PA302W – 30” wide color gamut LCD monitor
• PA322UHD – 32” wide color gamut, Ultra-high-denition LCD monitor
• EA244UHD – 24” wide color gamut, Ultra-high-denition LCD monitor
• EA304WMi – 30” wide color gamut LCD monitor
8 | NEC SPECTRAVIEW II - USER’S GUIDE
System Requirements
SpectraView has the following system requirements:
ÿ
Mac OS
Operating
System
Video
Graphics
Adapter
Video Color
Depth
Video
Resolution
Supported
Calibration
Sensors
USB At least one available USB port for Color Sensor, or display USB connection (MultiSync PA Series, P232W, P241W,
Intel based Apple Mac with
OS X version 10.5 or higher.
See README le for details.
PPC based Macs are no longer
supported as of version 1.1.11.
All Apple standard video graphics
cards, including most newer
PowerBooks. Digital (DVI or
DisplayPort) output is highly
recommended.
See the README le and NEC
website for the latest information
on Macs with DisplayPort video
output.
At least 24 bit color (Millions of colors).
Displays native resolution highly recommended (1280x1024, 1600x1200, 1680x1050, 1920x1080, 1920x1200,
2560x1440, 2560x1600, or 3840x2160 depending on monitor)
• GretagMacbeth Eye-One Display
V1
• X-Rite/GretagMacbeth Eye-One
Display V2
• X-Rite/GretagMacbeth Eye-One
Monitor, Eye-One Pro.
• X-Rite iOne Pro2.
• X-Rite ColorMunki.
• X-Rite iOneDisplay Pro
• NEC SpectraSensor Pro
• NEC MDSVSensor
• NEC MDSVSENSOR3
• ColorVision/Datacolor Spyder 2.
• Datacolor Spyder 3 and Spyder 4.
• BasICColor Discus.
• Photo Research PR-655, 670, 680,
730, and 740 Spectroradiometers.
P242W, EA244UHD, EA304WMi, X651UHD, X841UHD, and X981UHD models only).
Microsoft Windows XP, XP x64, Server
2003, Vista and Vista x64, Windows
7, Windows 7 x64, Windows 8, and
Windows 8 x64.
Most recent ATI, Nvidia, Matrox, S3
Graphics, and Intel graphics adapters.
Digital (DVI or DisplayPort) output is
highly recommended. See README le
for details.
• GretagMacbeth Eye-One Display V1
• X-Rite/GretagMacbeth Eye-One Display
V2
• X-Rite/GretagMacbeth Eye-One Monitor,
Eye-One Pro.
• X-Rite iOne Pro2.
• X-Rite ColorMunki.
• X-Rite iOneDisplay Pro
• NEC SpectraSensor Pro
• NEC MDSVSensor
• NEC MDSVSENSOR3
• Monaco OptixXR (X-Rite DTP 94).
• ColorVision/Datacolor Spyder 2.
• Datacolor Spyder 3 and Spyder 4.
• BasICColor Discus.
• Photo Research PR-655, 670, 680, 730,
and 740 Spectroradiometers.
Microsoft Windows Linux
64 bit versions of Ubuntu
Linux version 10.04 or higher
and variants. See Installation
Instructions for details.
Most recent ATI, Nvidia, and Intel
graphics adapters. Digital (DVI
or DisplayPort) output is highly
recommended. See Installation
Instructions for details.
• X-Rite/GretagMacbeth Eye-One
Display V2
• X-Rite iOneDisplay Pro
• NEC SpectraSensor Pro
• NEC MDSVSensor
• NEC MDSVSENSOR3
• Photo Research PR-655, 670, 680,
730, and 740 Spectroradiometers.
9 | NEC SPECTRAVIEW II - USER’S GUIDE
Chapter
Introduction to SpectraView II
1
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 proling solution.
The SpectraView system uses a color sensor to take color measurements of the display screen during calibration. The
software analyzes these measurements and sends color adjustment commands directly to the display monitor. This
means that color adjustments are made in the monitor rather than in the video graphics adapter, resulting in full use of
the number of colors available on the graphics adapter and a much brighter image with the maximum possible color
gamut. With SpectraView, the video graphics adapter is not used at all to make any gamma or Tone Response Curve
corrections to the display, so the full color resolution and delity of the system is maintained.
Main Features and benets
SpectraView provides the following features and benets:
• Automatic calibration - SpectraView communicates with the display monitors using Display Data Channel -
Command Interface (DDC/CI) which is a two-way communications link between the video graphics adapter and
display monitor using the normal video signal cable. No extra cables are necessary. All adjustments to the monitor
settings are done automatically using this communications link. A USB connection between the host PC and display
can also be used if supported (All MultiSync PA Series models, P232W, P241W, P242W, EA244UHD,EA304WMi,
X651UHD, X841UHD, and X981UHD. See the “Features by Model” on page 57 for all model specic functionality.).
It is not necessary to manually congure the monitor as all of the necessary settings are made by the software.
• High bit depth internal Look Up Tables (LUTs) - Each LCD display monitor supported by SpectraView II
features three internal 10, 12, or 14 bit LUTs (depending on the model). These tables allow very precise adjustments
to be made to the display’s Tone Response Curve without reducing the number of displayable colors or introducing
color banding artifacts.
• Multiple Calibration Sets - Different display monitor calibrations can be instantly loaded allowing quick and
easy switching between different calibration settings without the need to re-calibrate the display. Each time a
calibration set is loaded, the necessary monitor settings and ICC/ColorSync proles are automatically updated.
• Informative - At the end of each display monitor calibration, an information window is displayed which shows
the results of the calibration and includes a wealth of information about the display such as the measured color
gamut, grayscale color tracking, Delta-E, and luminance values. Additional information about the display monitor
such as the model name, serial number and the total number of hours that it has been in use are also displayed.
• Calibration status validation - SpectraView will query each calibrated monitor to see if any controls have
changed since the last calibration. If anything has changed, the previous calibrated state can be restored
automatically.
• Flexible - SpectraView provides many features and options that make it exible enough to be used in a large
variety of applications, including full DICOM support for medical imaging. The display luminance can be adjusted
to either a specic value or to the maximum possible that the display can achieve.
• 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.
• Monitor Proling - After calibration, the display is automatically proled and highly accurate ICC/ColorSync
10 | NEC SPECTRAVIEW II - USER’S GUIDE
color proles are generated and automatically registered with the Color Management System. These proles use
the Bradford Chromaticity Adaptation matrix.
• Colorimeter function - The software features a Colorimeter function which allows direct measurements to be
taken by the color sensor and the results displayed in a variety of different formats.
• Ambient Light Measurement function - Allows measurements to be taken of the ambient light of the
viewing environment surrounding the display monitor. This is useful in determining the optimal viewing conditions
for the display monitor so that the ambient light level and color do not inuence the viewing of images on the
screen.
11 | NEC SPECTRAVIEW II - USER’S GUIDE
Chapter
Dialogs, Settings and Menus
2
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
Conguration dialog box used to
modify Target settings.
Open Target
Opens a Calibration Target
Targets listbox
Selects an existing
Target setting.
Targets that have
been calibrated have
green check mark.
le.
Save Target
Saves the current Target
Settings to a Calibration Target
le.
Calibration On
Turns the display
calibration on or off.
Calibrate
Calibrates the currently
selected display to the
currently selected Target
Settings.
Display listbox
Selects which display to
calibrate if more than one
display is present.
Open Previous Monitor
Calibration
Previous calibrations can
be loaded and viewed.
The display settings and
ICC/ColorSync prole
for the display will be set
automatically.
12 | NEC 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 modied, 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. Different calibrations can
be automatically restored by selecting different Targets that have been calibrated. This makes it easy to quickly change
between different calibrated Target settings. The green check mark will change to yellow once the calibration for that
Target has passed the recommended recalibration time, indicating it is time to recalibrate that particular Target.
White Point shows the Target White Point.
Gamma shows the Target gamma or Tone Response Curve type.
Intensity shows the Target display intensity value.
Contrast Ratio shows the Target contrast ratio.
Color Gamut shows the Target color gamut for display models that support gamut adjustment. This will be grayed out
if the currently selected display does not support color gamut adjustment.
Calibration
The Calibration group shows the current calibration status of the currently selected display monitor and is where the
monitor calibration process is started.
The display monitor can be calibrated to the current Target Settings by clicking the Calibrate button.
Note: The Calibrate button will be disabled if either no supported color sensor or display monitor was detected. See the chapter
“Troubleshooting” on page 51 for more information.
Status shows the current calibration status of the display monitor, either Calibrated, Uncalibrated, or Calibration Off.
Last shows the date and time that the display monitor was last calibrated.
Next Due shows the number of days until the display is next due for recalibration, or the number of days past when it
was last due for recalibration. This is based on the date of last calibration, and the Recalibration Reminder Period in
the Preferences dialog.
If the display is not currently in a calibrated state the Calibration On checkbox will be unchecked. If the monitor
OSD controls are locked using the Lock OSD Controls option in the Preferences dialog, the OSD controls will be
automatically unlocked when the Calibration On checkbox is cleared. Selecting the checkbox will automatically re-
congure the display monitor to its previously calibrated state.
The Open button will open the Previous Monitor Calibration dialog which shows all of the previous calibrations that
have been performed. It is possible to view the detailed results of each calibration, as well as manually selecting a
previous calibration to load. Loading a previous Monitor Calibration will automatically congure the display and regenerate the ICC/ColorSync prole, if one was generated when the calibration was performed. This feature can be
used to manually switch between different monitor calibrations with different Target settings, or to restore a particular
calibration.
Note: The Monitor Calibrations are specic to each individual display monitor and can not be used to load the calibrated
settings of one display monitor into another, even if they are the same model. This is because of the individual tolerances
and characteristics of each display monitor.
13 | NEC SPECTRAVIEW II - USER’S GUIDE
Display
The Display group is used to select the display monitor to calibrate if more than one display is present on the system.
Displays can be selected from the listbox and the Target Settings and Calibration status will be automatically updated.
Note that Target Settings are independent for each monitor when multiple monitors are used, so each display monitor
can be calibrated to different Target settings if desired.
Display Conguration button (Windows and Linux versions only)
opens the Display Conguration dialog which is used to congure
SpectraView II if more than one display is used on the system. See
the following section.
Display Conguration dialog (Windows and Linux versions only)
The Display Conguration dialog is accessed either from the
Edit menu, or by clicking on the Display: Congure button in
the main SpectraView window.
It may be necessary to manually congure the relationship
between the display layout on the desktop, and the display
monitors that are connected to the system. Correct conguration
of this relationship is necessary so that the display monitor
adjustments are sent to the correct monitor, and that the
calibration is performed on the correct part of the desktop.
A diagram depicting the display desktop layout is shown and the
display monitors associated with each desktop screen is shown.
The monitor associated with each display can be selected using
the listboxes.
Clicking on the display rectangles will also select different
displays on the system desktop.
If a USB connection is made to the display (all MultiSync
PA Series models, P232W, P241W, P242W, EA244UHD,
EA304WMi, X651UHD, X841UHD, and X981UHD only), the
USB connection will be shown and should be selected instead
of the DDC/CI connection. See the “Features by Model” on page
57 for all model specic functionality.
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 Congure - Attempts to automatically detect and congure the display monitors to the display layout on the system
desktop. In most cases this will correctly congure the correct relationship, but in some cases it may be necessary to
manually congure.
Test LUT - Tests that the video graphics adapter card LUT (Look Up Table) can be correctly set. Clicking this button
with ash the screen brightness by setting the LUT in the video graphics adapter card for the currently selected display.
Verify that the correct screen ashes when this button is clicked.
14 | NEC SPECTRAVIEW II - USER’S GUIDE
Note: Since SpectraView applies all correction curves to the 10, 12, or 14 bit LUT inside the monitor, the video graphics adapter
card LUT is always set to linear.
Test Monitor - Tests the communications with the currently selected display monitor. Clicking this button will send a
command to ash the monitor’s power LED color or brightness, or ash the screen brightness (depending on display
model). If the wrong display monitor ashes then change the monitor associated with each display can be selected
using the listboxes.
Edit Calibration Target Conguration dialog
The 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 les with other users of SpectraView on
Windows, Linux, and Mac OS platforms.
White Point
White Point selects the Target white point for the calibration.
Several popular industry standard White Point values, such as
D50 and D65, are provided.
A Native option is available that can be used to leave the White
Point at the display’s native characteristic white point. This is
useful when the maximum possible luminance is desired but the
white point is not critical.
A custom white point can be specied by clicking the Edit... button
to open up the Custom Color Temperature dialog.
15 | NEC SPECTRAVIEW II - USER’S GUIDE
Gamma Curve
Gamma Curve selects the desired tone response curve of the calibrated display. Options are:
• Monitor Native Gamma - No correction is applied and the display’s Look Up Tables are set to linear.
• Gamma Curve Value - The response curve will follow a simple gamma curve. Values between 1.0 and 3.0
can be entered. A gamma value of 2.2 is the most popular for most applications.
• DICOM Curve - The response curve follows the DICOM (Digital Imaging and Communications in Medicine)
specication. 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.
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. By scaling the black level and Intensity values used to calculate the DICOM response
curve, using the Use Scale Factor value, the response curve can be based on the lower future black level and
Intensity. The value used will depend on the display, its usage, and the time interval until it is expected to next
be re-calibrated.
• BT.1886 - A response curve recommended for at panel displays used in HDTV studio production. It
approximates a gamma of 2.4 but automatically adjusts to improve detail based on the black level.
• Custom Curve - Advanced and custom response curves can be selected from presets or created by
importing a table of values. Click the Edit... button to open the Custom Gamma Curve dialog.
Intensity
The Intensity selects the luminance or “brightness” of white for the calibration. Options are:
• Maximum possible - calibrates the display to the maximum possible luminance that it can achieve.
The actual value achieved will depend on the display’s type, its age and the white point used. This is not
recommended when trying to exactly match two or more displays, since there may be a difference between what
Intensity each display can achieve.
• Specic Level - calibrates the display’s Intensity to a specied target value. If the display can not achieve the
specied value, it will be calibrated to the closest possible Intensity, and a message will be displayed after the
calibration has completed.
Note: If you are unsure about what level to use for the Specic Level for a particular application, it is possible to interactively
adjust both the White Point and Intensity using the Visual Match feature in the Custom White Point dialog.
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Contrast Ratio
Color Gamut
Contrast Ratio allows a particular contrast ratio to be used if necessary.
The contrast ratio is the ratio of white to black luminance.
Selecting Monitor Default will calibrate the display to the highest possible
contrast ratio, which is limited by the display technology, the selected
White Point, Intensity value, and other factors.
In some applications, such as simulating low contrast images such as
in newsprint, it is useful to have a lower contrast ratio than the display’s
native value. Contrast Ratios in the range of 50:1 to 500:1 can be selected.
Note: If the selected contrast ratio is higher than what the display is actually
capable of achieving, then the display will calibrate to the highest possible
contrast ratio. If a specic Contrast Ratio is selected, it is recommended that
the number of Calibration and Measurement Steps be set to at least 32 in the
Preferences dialog.
Color Gamut allows a particular color gamut to be selected if
the display supports color gamut adjustment. The color gamut
is the range of colors that can be displayed by the monitor, and
is dened and bounded by the red, green and blue primaries
which together make up all other colors.
Note: Depending on the display model, this control may be
disabled or limited to Native and sRGB.
For advanced models such as the MultiSync PA series, the
color gamut can be fully controlled and customized, and the
internal SpectraView engine will manipulate the primary colors
in order to display different colorspaces.
Several preset Color Gamuts are available in the list, or a custom gamut can be created. Click the Edit.. button to open
the Custom Color Gamut dialog.
By using the Native (Full) setting, the color gamut will be that of the LCD panel which will result in the widest possible
color gamut. Use this setting if you are using color managed applications such as Adobe Photoshop which use a Color
Management System to correctly convert colors for display.
Examples of typical usage scenarios when using a non-native color gamut can be benecial:
Video Editing: When editing video in an application that is not color managed. In this case the video is typically
encoded and intended to be viewed on a display that either has SMPTE-C or ITU-R BT.709 color primaries. Since the
video editing application is not color managed, no color conversion is made between the colorspace of the encoded
video, and that of the display. If the display was set to the Native color gamut, video images would appear oversaturated because they are being displayed directly on the wide color gamut display without any kind of compensation.
By setting the Color Gamut of the calibration Target to that of the encoded video, the display will handle the color
conversion that would have normally been done if the video was color managed, and will be displayed correctly
without being over-saturated.
Web Viewing: When viewing web pages using a web browser application and system that are not color managed,
images and graphics would otherwise appear over-saturated since they were probably intended to be viewed on a
typical sRGB gamut display. In this case using the sRGB Color Gamut as a Target will assign the display to handle
17 | NEC SPECTRAVIEW II - USER’S GUIDE
the color conversion so it appears to be an sRGB colorspace display, even though it is actually a wide color gamut
LCD panel.
6 Axis Color Trim
The 6 Axis Color Trim function allows the screen colors to
be adjusted after calibration. Adjustments are made in the 6
Axis Color Trim dialog, available on the Tools menu. Any
adjustments to the settings for the current Target can be
reset by clicking the Reset button. See ”Using 6 Axis Color
Trim” on page 56 for more information on using this
feature.
Custom Color Gamut dialog
The Custom Color Gamut dialog is accessed by clicking the Edit.. button in the Color Gamut section of the Edit
Calibration Target dialog.
Note: This feature is only available on all MultiSync PA series models, P232W, P241W, P242W, X651UHD, X841UHD, and
X981UHD models. See the “Features by Model” on page 57 for all model specic functionality.
The color gamut of the monitor can be altered by changing the positions of the red, green and blue primary colors. This
can be done by either clicking and dragging the positioning controls on the CIE xy diagram, or by modifying the CIE xy
values for each primary color.
The native color gamut of the monitor is shown as a yellow triangle on the CIE xy chromaticity diagram in the dialog. This
triangle represents the limits for displayable colors, and colors outside it can not be represented correctly by the display.
The LCD panels used in the NEC MultiSync PA Series (except the PA231W, P232W, P241W, and P242W) are known
as wide color gamut panels, meaning they can display a much wider range of colors than typical monitors.
However, for some applications, it is not desirable to 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.
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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 automatically converted to
the nearest displayable color. An example is the DCI colorspace used for Digital Cinema applications. Parts of this
colorspace lie outside the range of displayable colors, but it is still advantageous to have the display appear as DCI color
gamut for all of the parts of the colorspace which lie within the displayable color range.
Note: When the Color Gamut setting is set to anything other than Native, the ICC/ColorSync proles generated by SpectraView
will automatically use the color primary chromaticity values calculated by the display’s internal SpectraView engine, rather
than measurements taken by the color sensor if the current Source of primary color chromaticities for ICC Prole setting
in the Preferences is set to Automatic (default). This feature allows the use of color gamuts that are larger than that which
the display actually has, and encodes the correct color primary chromaticity values within the ICC/ColorSync prole, even
though they may not all be actually be displayable and measurable.
If desired, this behavior can be changed by selecting Calibration Sensor in the Preferences, however note that if a color
gamut larger than that of the display is used, the color primary chromaticity values within the ICC/ColorSync prole will not
correctly represent the Target color gamut.
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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 specication that includes the offset, transition and slope components.
• L* - A curve based on L* in the Lab specication. The L* curve is intended to be more perceptually uniform
than a simple gamma value curve.
• NTSC Video - A curve based on the SMPTE-170M specication for NTSC that includes the offset, transition
and slope components.
• SMPTE-240M - A curve based on the SMPTE-240M specication for 1125 line HD video that includes the
offset, transition and slope components.
Custom curves can be created and imported into SpectraView by creating a text le with a list of numerical values. The
text le must conform to the following specications:
• Must contain between 3 and 256 values.
• Each value must be on a separate line.
• The rst value must be 0.
• Values must be monotonically increasing.
When imported, the values will be automatically scaled and interpolated to create a Target curve.
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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 eld. The corresponding CIE xy coordinates
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 are from the
black body radiator locus.
A custom White Point may be measured using the calibration sensor, and automatically entered in the CIE xy chromaticity
coordinate elds by clicking the Measure button. This is useful for “cloning” the white point of another monitor.
The color sensor can be placed over the white circle on the right of the dialog in order to take a measurement of the
white point by clicking the Measure button. The circle can also be used to visually compare the white point to another
reference such as a lightbox. If a larger area of white reference is needed, selecting White Screen Background will ll
the entire screen background with white.
The luminance and color of the display can be interactively adjusted to visually match a reference if necessary. To
interactively adjust the color of the display, click and drag within the color circle or use the arrow keys. Use the vertical
slider control to adjust the Intensity. Specic Red, Green and Blue values can also be entered.
Once a visual match is found, the adjusted white point must be measured by clicking the Measure button and measuring
the white circle with the color sensor. This will update the Target white point values with the new White Point values.
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.
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Preferences dialog
The Preferences dialog is accessed from the Edit menu on Windows and Linux, and on the SpectraView II application
menu on Mac OS. The selections are divided into 5 different tabs.
The default settings for the entire Preferences can be restored by clicking the Defaults button.
Preferences dialog - Calibration Sensor tab
Sensor Type - selects the model of calibration sensor to use, and shows the current model being used.
Auto-Detect - attempts to detect the selected model of calibration sensor. SpectraView will automatically detect the
calibration sensor when the application is started, however if the sensor was not connected at that time, or if it was being
used by another application, then it may be necessary to re-detect it.
Note: If the sensor was not attached when SpectraView was launched, then it may be necessary to exit the SpectraView
application and launch it again.
COM port - selects the port used to communicate with the sensor (Photo Research Spectroradiometers only).
Model and Serial # - shows the model and serial number of the currently selected calibration sensor device.
Average low light measurements - will average several color sensor measurements to improve the accuracy of low
luminance measurements (below 10 cd/m²). Selecting this option will increase the monitor calibration time.
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Preferences dialog - Calibration tab
Calibration and Prole Steps - selects the number of measurement steps to take when calibrating and proling 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.
Recalibration Reminder Period - sets the interval after the display is calibrated until a calibration reminder message
is displayed. The default value is 2 weeks. Select Never if you do not want to be reminded to recalibrate the display.
Calibration Priority - selects the algorithm used to calculate the display’s response curve. Options are:
• Maximize Contrast Ratio - will maximize the display’s contrast ratio by making black as dark as possible at
the expense of grayscale color tracking near black.
• Best grayscale color tracking - will generate the best grayscale color tracking in the black areas, at the
expense of a slightly reduced contrast ratio. This option will not be used if a calibration Target with a Contrast
Ratio of other than Default is used.
Note: This setting does not have any impact on the calibration of the MultiSync PA series models, P232W, P241W, P242W,
EA244UHD, EA304WMi, X651UHD, X841UHD, or X981UHD model displays and will be disabled if no relevant displays are
connected.
Extended luminance stabilization time - increases the waiting time for the display to stabilize while the luminance
is being adjusted. This option can be used if necessary to increase the accuracy of the luminance adjustment when a
Target with a Specic Level of Intensity is being used. It may signicantly increase the calibration time, and is normally
only useful when a very low intensity value is used. Try selecting this option if the calibrated Intensity is signicantly
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different than the Target value due to the display stabilizing during the calibration and proling steps.
Preferences dialog - ICC Prole tab
Generate ICC Prole after calibration - selecting this will automatically generate an ICC/ColorSync monitor prole
after the display is calibrated. This option should be checked for most applications.
Set as Windows Color Management System Monitor Prole (Windows version only) - selecting this will automatically
associate the generated ICC monitor prole with the Windows Color Management System. This option should be
checked for most applications.
ICC Prole le name - selects how the ICC Prole le is named when an ICC Prole is generated, for example after
calibration.
• Set Automatically - the prole will be automatically given a name and description. This is the default setting
as it is not normally necessary to manually name the prole le.
• Prompt for le name and description - a prompt will appear and the le name and description can be
entered manually.
Storage Location (Mac OS 10.6 and earlier only. Disabled in OS 10.7 and later, and defaults to Per User of this
computer due to system folder permissions.) - species where the generated ICC/ColorSync proles are stored.
Options are:
• Per User of this computer - the prole is stored in the User’s prole folder. Proles in this folder are typically
not accessible from other user accounts.
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• Shared by all users of this computer - the prole is stored in the shared prole folder that is accessible by
all user accounts.
Source of primary color chromaticities for ICC Prole - selects what values are used for the Primary Color
Chromaticities that are encoded in the ICC/ColorSync monitor prole. The values are used to describe the color gamut
of the display.
Options are:
• Automatic (Recommended) - the optimal setting based on the display monitor type and Target Color Gamut
selected is automatically used. It is recommended to use this setting.
• Calibration Sensor Measurements - uses the values measured by the calibration sensor. For normal color
gamut displays this is the recommended option when using a Native Color Gamut Target since the calibration
sensor can accurately measure these primary colors. For wide color gamut displays some colorimeter based
calibration sensors may not be able to accurately measure the primary colors and it is recommended to use the
Factory Measurements option.
When using a Target Color Gamut other than Native, it is recommended to use the Factory Measurements option
since the SpectraView Engine will calculate the correct primary color chromaticities, even if they lie outside of
the native color gamut of the display. Otherwise the actual measured values will be used, which may result in
an incorrect color gamut being encoded in the ICC prole since the effective color gamut of the display extends
outside the measurable color gamut.
• Factory Measurements - uses the measurements taken during production of the display monitor and data
calculated by the display’s internal SpectraView engine to encode the color gamut information in the generated
ICC Prole. These measurements may be more accurate than those of some color sensors when measuring
wide gamut displays. See “Supported Display Monitors” on page 7 for a listing of display gamut types. This
setting is recommended when using a Target Color Gamut other than Native.
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Preferences dialog - Interface tab
Luminance Units - selects the units that luminance values are displayed in. Options are:
• Candelas (cd/m²)
• Foot Lamberts (fL)
Automatically load settings on Target change - automatically loads the most recent Monitor Calibration Settings
when a different Target is selected, and will generate a new corresponding ICC Prole. Using this option allows different
Targets to be selected and the monitor will be automatically congured.
Conrm display calibration status each time application is launched - selects if the current monitor settings should
be checked and compared with the settings for the last calibration when SpectraView is launched. If the monitor settings
are different a warning message will be displayed, and the last calibration settings can be reset. This checking operation
will take several seconds each time SpectraView is launched.
Delay loading of SpectraView II Gamma loader on Windows Startup (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 rst. Select this option if you are experiencing monitor detection or video blanking
issues only when the SpectraView II Gamma Loader runs as Windows starts.
Automatically check for software updates - when selected the software will automatically check for any software
updates every two weeks when the software is launched. An Internet connection is required.
User Interface Language - selects the language the application’s user interface. Auto (System Language) will use
the current system language setting if the language is available. Supported languages are: English, German, French,
Spanish, Italian, Russian, and Chinese.
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Preferences dialog - Display tab
Lock OSD (On Screen Display) controls when calibrated - selects if the monitor’s On Screen Display control buttons
are locked when the monitor is calibrated. Locking the controls can be useful to prevent accidental or unauthorized
adjustment of the monitor once it is calibrated. Options are:
• Don’t lock
• Lock all except Bright and Contrast
• Lock all
Note: The controls will be unlocked if the calibration is turned o in the main window.
Use Auto Luminance (if supported) - enables the Auto Luminance sensor circuit inside the display monitor to increase
the Intensity (brightness) stability as the display ages and warms up. This feature will not be used for Targets with
“Maximum Possible” Intensity selected, or if the Target Intensity falls outside the range that the Auto Luminance circuit
is capable of controlling. This feature is only available on the following models: LCD2490WUXi, LCD2490WUXi2,
LCD2690WUXi, LCD2690WUXi2, and LCD3090WQXi.
The MultiSync PA Series of displays (except the PA231W) automatically always use Auto Luminance to maintain the
stability of the monitor. The PA231W does not support Auto Luminance.
See the “Features by Model” on page 57 for all model specic functionality.
Note: This setting will be disabled if no relevant displays are connected.
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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.
The graphs and information can also be copied to the clipboard and
pasted into other document and image editing applications by rightclicking and selecting Copy. This is useful for sharing and documenting
various results.
Information window - Summary tab
White Point
The Target values are the currently selected Target’s White Point. The Calibrated values show the actual measured
White Point after the display has been calibrated.
The Delta E value is the calculated color difference between the Target and Calibrated White Point using both the
color and luminance. This is calculated using the Delta E CIE 94 color formula. A Delta E value of 1 is considered just
perceptible to 50% of users. Values under 3 are generally considered excellent for display calibration.
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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 indicates if the Red, Green and
Blue values came from either the Calibration Sensor or Factory Measurements, and 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.
The Calibrated values show the actual measured Black Level and Intensity after the display has been calibrated.
Contrast Ratio
The Contrast Ratio is the ratio of the Intensity to the Black Level. The Target value shows the currently selected
Target’s Contrast Ratio. For LCD display monitors, this is set to “N/A” since the monitor’s Black Level is xed.
The Calibrated values show the actual contrast ratio calculated using the actual measured Black Level and
Intensity after the display has been calibrated.
Gamma Curve
Target shows the type or gamma value of the Target Gamma Curve.
Calibration Steps - shows the number of calibration steps used to measure the grayscale when the calibration was
performed.
ICC Prole
File Name shows the name of the ICC/ColorSync prole, if one was generated after the display was calibrated.
Description shows the description tag text of the ICC/ColorSync prole, if one was generated after the display was
calibrated.
Display Monitor
Model shows the model name of the currently selected display.
Serial # - shows the serial number of the currently selected display.
Firmware - shows the internal rmware version of the currently selected display.
Current Usage shows the total number of hours that the currently selected display has been in use.
Last Calibration shows the number of hours that the currently selected display has been used since it was last
calibrated.
Calibration Date shows the date and time that the monitor was last calibrated to the currently selected target.
6 Axis Color Trim
Shows the 6 axis color trim adjustments, if any, that are applied to the currently selected Target. See the “Using 6
Axis Color Trim” on page 56 for more information on using this feature.
Calibration Sensor
Model shows the model name of the calibration sensor used when the calibration was performed.
Serial # - shows the serial number of the calibration sensor used when the calibration was performed.
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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.
If a Target Color Gamut other than Native is being used, then selecting Target will show the Target color gamut. This
will be disabled if the Native color gamut is used since it will depend on each individual display.
Selecting a reference color space will overlay the color gamut onto the display’s.
Colorspace
• CIE xy - shows the gamut projected in CIE xy colorspace. This is probably more familiar to most users, however
it does not allow color differences to be easily judged because this projection overemphasizes differences in green
colors, and underemphasizes differences in blue colors.
• CIE u’v’ - shows the gamut projected in CIE u’v’ colorspace. This is projection is an improvement over CIE xy
in that different colors are more equally represented in scale.
Show black body curve - shows the black body locus as yellow curve.
Show Target white point - shows the White Point of the currently selected target as a green X.
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