HP DreamColor Z27x Calibration Best Practices for the DreamColor Z27x Professi - Page 11

LUT Archiving, Downloading and Uploading

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Calibration Best Practices for the HP DreamColor Z27x Professional Display - Z7X230/Z7X240 Firmware Release | Technical white paper • #Secondary Colors: Post-calibration measurements of 100% saturation secondaries. • #Target Primaries: The CIE xy values for the desired primaries and white point, and the white point luminance in cd/m2. • #Calibrated Primaries: The CIE xy measurements for calibrated primaries and white point, and the white point luminance in cd/m2. • #Calibrated Secondaries: The CIE xy measurements for the calibrated secondaries. LUT Archiving, Downloading and Uploading StudioCal XML provides three different tags that allow you to save the PreLUT, matrix, and PostLUT to a USB drive or to upload to the display from a USB drive. Archive LUT Designed to be used in conjunction with a calibration, the archive LUT tag instructs the display to download the calibrated LUTs and matrix to the USB flash drive containing the studiocal.xml file. The files are stored in a folder and the folder name is assigned as the calibrated preset's name. The tag contains one attribute and is structured as follows: If value is set to TRUE, at the end of the calibration the LUTs and matrix will be downloaded to the flash drive. If set to false, the tag is ignored. Download LUT Designed to be used independent of a calibration, the download LUT tag instructs the display to download the calibrated LUTs and matrix to the USB drive containing the studiocal.xml file. The tag contains two attributes and is structured as follows: • num: the preset number you wish to download. Integer values from 0 to 6 are supported. • folder: the name of the folder on the USB flash drive where you wish to store the LUT and matrix files. If the folder does not exist on the drive, it will be created. Upload LUT Designed to be used independent of a calibration, the upload LUT tag instructs the display to load LUT files stored on the attached USB drive and install them into the specified color space preset. The tag contains four attributes and is structured as follows: • num: the preset number you wish to upload to. Integer values from 0 to 6 are supported. • name: the name you wish to assign to the preset being created. Names can be up to fifteen characters in length and may consist of alphanumeric (A-Za-z0-9) characters, a period (.) and a space. All other ASCII characters are converted to periods. • folder: the name of the folder on the USB flash drive where the LUT and matrix files are stored. • store: Specifies the memory store that will be used and accepts the values "user" or "factory". The Z27x contains two different memory stores: factory and user. - The factory store is a protected memory location and is where the factory calibration is stored. When a calibration is written to the factory memory location, the user memory location is also rewritten to match the factory memory location. This location can only be rewritten via StudioCal.XML and this option is provided to allow facilities and studios to store a calibration that can easily be recalled via the "Reset to Factory Calibration" or "Factory Reset" command. - The user store is the memory location where all menu-driven calibrations are stored. This memory location is not protected and will be rewritten when any type of calibration is performed or if a "Factory Calibration" or Factory Reset" command is issued. 11

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Calibration Best Practices for the HP DreamColor Z27x Professional Display
—
Z7X230/Z7X240 Firmware Release | Technical white paper
11
•
#Secondary Colors
: Post-calibration measurements of 100% saturation secondaries.
•
#Target Primaries
: The CIE xy values for the desired primaries and white point, and the white point luminance in cd/m
2
.
•
#Calibrated Primaries
: The CIE xy measurements for calibrated primaries and white point, and the white point luminance
in cd/m
2
.
•
#Calibrated Secondaries
: The CIE xy measurements for the calibrated secondaries.
LUT Archiving, Downloading and Uploading
StudioCal XML provides three different tags that allow you to save the PreLUT, matrix, and PostLUT to a USB drive or to
upload to the display from a USB drive.
Archive LUT
Designed to be used in conjunction with a calibration, the archive LUT tag instructs the display to download the calibrated
LUTs and matrix to the USB flash drive containing the studiocal.xml file. The files are stored in a folder and the folder name
is assigned as the calibrated preset’s
name.
The tag contains one attribute and is structured as follows:
<archive_lut_flag value="TRUE|FALSE"/>
If
value
is set to TRUE, at the end of the calibration the LUTs and matrix will be downloaded to the flash drive. If set to
false, the tag is ignored.
Download LUT
Designed to be used independent of a calibration, the download LUT tag instructs the display to download the calibrated
LUTs and matrix to the USB drive containing the studiocal.xml file.
The tag contains two attributes and is structured as follows:
<download_lut num="INTEGER" folder="ALPHA"/>
•
num
: the preset number you wish to download. Integer values from 0 to 6 are supported.
•
folder
: the name of the folder on the USB flash drive where you wish to store the LUT and matrix files. If the folder does
not exist on the drive, it will be created.
Upload LUT
Designed to be used independent of a calibration, the upload LUT tag instructs the display to load LUT files stored on the
attached USB drive and install them into the specified color space preset.
The tag contains four attributes and is structured as follows:
<upload_lut num="INTEGER" name="ALPHA" folder="ALPHA" store="user|factory"/>
•
num
: the preset number you wish to upload to. Integer values from 0 to 6 are supported.
•
name
: the name you wish to assign to the preset being created. Names can be up to fifteen characters in length and may
consist of alphanumeric (A
–
Za
–
z0
–
9) characters, a period (.) and a space. All other ASCII characters are converted to
periods.
•
folder
: the name of the folder on the USB flash drive where the LUT and matrix files are stored.
•
store
:
Specifies the memory store that will be used and accepts the values “user” or “factory”. The Z27x contains two
different memory stores: factory and user.
–
The factory store is a protected memory location and is where the factory calibration is stored. When a calibration is
written to the factory memory location, the user memory location is also rewritten to match the factory memory
location. This location can only be rewritten via StudioCal.XML and this option is provided to allow facilities and studios
to store a calibration that can easily be recalled via the “Reset to Factory Calibration” or “Factory Reset” command.
–
The user store is the memory location where all menu-driven calibrations are stored. This memory location is not
protected and will be rewritten when any type of calibration is performed or if a “Factory Calibration” or Factory Reset”
command is issued.