NEC Spectraview 1990 Users Manual

	SPEC TRAVIEW	II 	- 	USER’S 	GUIDE 	|	1

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. 
Currently supported color sensors are:
X-Rite/GretagMacbeth Eye-One Display V2
X-Rite/GretagMacbeth Eye-One Pro 
X-Rite ColorMunki
Datacolor Spyder3
These  measurements  are  useful  in  determining...

	 |	SPEC TRAVIEW	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 LE\
D is distracting.
The ColorComp control adjusts the screen uniformity correction applied to the display in order to improve the...

	SPEC TRAVIEW	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...

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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.
Combining red, green, and blue light, known as additive...

	SPEC TRAVIEW	II 	- 	USER’S 	GUIDE 	|	
SpectraView includes several industry standard targets for a variety of applicat\
ions:
Target NameApplicationWhite Point 
CIE (x,y)
Tone Response Curve 
(Gamma)
Print StandardCommonly referred to as Proofing 
Standard.  Used  widely  for  the 
proofing  of  color  transparencies 
or press output.
D50 (0.346, 0.359)1.8
Photo EditingUsed  for  editing  and  previewing 
images  in  a  controlled  lighting 
environment. An Intensity of 140 
candelas (cd/m²)...

	 |	SPEC TRAVIEW	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.
A Target consists of up to four specifications that describe the color characteristics of the display:
Gamma or Tone Response Curve (TRC)
White Point
Intensity
Contrast Ratio
Gamma and Tone Response Curves (TRC)
The Gamma or Tone Response Curve of a display is the relationship between the...

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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. If the display is being used in 
a very bright environment and there is no visual reference...

	 |	SPEC TRAVIEW	II 	- 	USER’S 	GUIDE
Launching
As SpectraView launches, it will automatically search for any supported displays, a\
nd a supported color sensor.
If SpectraView is unable to detect either a supported display or the last selected color sensor, an error message will 
be displayed and the Calibrate button will be disabled. Refer to the Troubleshooting section of this manual.
Selecting a calibration Target
A Target specifies the color characteristics of the display for the...

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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.
Once  the...

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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...