NEC Spectraview 1990 Users Manual

Preferences dialog - Interface tab
Options are:
Automatic - the optimal setting based on the color sensor model and the display m\
onitor 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. For wide color gamut displays some colorimeter based cal\
ibration sensors may not be 
able to accurately measure the primary...

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 ar\
e:
Don’t lock 
Lock all except Bright and Contrast
Lock all
Note: The controls will be unlocked if the calibration is turned off in the main window. 
Use Auto Luminance (if...

	SPEC TRAVIEW	II 	- 	USER’S 	GUIDE 	|	

The Information  window  is  accessed  from  the Tools  menu.  It  will  also  be  automatically  displayed  after  a 
display calibration is completed. 
Information window
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...

	 |	SPEC TRAVIEW	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. 
The Calibrated  values  show  the  actual...

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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...

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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...

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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 luminan\
ce curve of the Target.
Deviations from this ideal can result in grayscale color tracking errors which can be seen as...

	 |	SPEC TRAVIEW	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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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 valu\
es.
Show 10% Limits - shows two lines representing 10% error deviations from the Barten Model curve. Medical 
displays used...

0	 |	SPEC TRAVIEW	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.
Measure: 
Single -...