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HP DreamColor Z31x User Guide - Page 85

Gamma, Core calibration tag examples, Generates an Equal Probability of Detection EOTF,

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use_uv: (optional) Specifies whether CIE xy or CIE u'v' values are provided for the primaries and white point. This attribute accepts the values "xy" or "uv". If this optional attribute is omitted from the tag, xy values are assumed. external: This attribute is used in conjunction with the "external_primaries" tag to allow the use of nonsupported measurement instruments. Used as a flag, this attribute supports values of "TRUE" and "FALSE". It should be set to FALSE unless an external_primaries tag is also included in the StudioCal XML file. Use of this tag is discussed later in this user guide. Gamma This tag allows you to specify the gamma or EOTF to use for your color space preset. The tag contains one attribute and is structured as follows: The value attribute supports the following values: 1.0-3.0: Power function gamma values. Typical values are 2.2, 2.4, and 2.6. sRGB: Generates an sRGB EOTF per the sRGB standard. This EOTF curve is roughly equivalent to a 2.2 gamma with a linear segment in the lower region. BT1886: Generates an ITU-R BT.1886 EOTF. This EOTF is designed to more closely represent the desired response for video production and is typically used with the BT.709 and BT.2020 color primaries. EPD: Generates an Equal Probability of Detection EOTF, as specified in the Society for Information Display Information Display Measurement Standard document. This grayscale function is designed for use when viewing satellite imagery and is intended to make dimmer low-contrast objects of interest more easily readable when residing near brighter areas in the image. Core calibration tag examples The following are examples of a StudioCal XML file showing the usage of the core calibration tags. The first example instructs the display to calibrate one preset with BT.709 primaries, a D65 white point, and a BT.1886 gamma. It stores the calibration in the user memory location. Core calibration tags 75

Section	Page
Getting Started	11
Important safety information	11
Product features and components	12
Features	12
Front panel controls	13
Rear and side components	14
Setting up the display	15
Use caution when setting up the display	15
Installing the display stand	15
Mounting the display	16
Locating the serial number and product number	17
Attaching an optional device to the rear of the display	18
Installing a security cable	18
Connecting the cables	19
Adjusting the display	23
Turning on the display	24
HP watermark and image retention policy	25
Connecting USB devices	25
Removing the display stand	26
Using the display	27
Software and utilities	27
The information file	27
The image color matching files	27
Installing the .INF and .ICM files	28
Installing from the disc	28
Downloading from the Internet	28
Updating the firmware	28
Selecting a color space preset	30
Adjusting luminance	30
Understanding image adjustment options	31
Video signal adjustments	31
Downstream RGB adjust	31
Use video levels (64–960)	31
Overscan the frame	32
Show only the blue channel	32
Using the aspect ratio management options	32
The “Fill To” options	32
Fill to source aspect ratio (proportional)	33
Fill to entire screen (non-proportional)	33
Fill to screen width (proportional)	33
Fill to screen height (proportional)	34
Pixel-for-pixel	35
True 2K pixel mapping	35
Using the “fill To” options	35
Digital cinema aspect ratio masking	36
Using the digital cinema aspect ratio masking options	36
Show entire DCI container	36
Mask to DCI 1.85:1 aspect ratio	36
Mask to DCI 2.39:1 aspect ratio	38
Show masked region	38
Set mask opacity	38
Working with markers	39
Film aspect ratio markers	39
16:9 aspect ratio markers	40
4:3 aspect ratio markers	41
Crosshair markers	42
Marker color	42
Custom markers	42
Marker element	42
Marker info element	43
Marker position element	43
Marker style element	43
Custom marker example	44
Using picture-in-picture (PIP) and 2×1 dual split	44
Adjusting the PIP image	45
Video legal (64–960)	45
Overscan to safe action	45
Digital cinema cropping	45
Renaming video inputs	45
Custom video input names	45
Video input element	46
Input info element	46
Custom video input name example	46
Using the KVM switch	46
How to connect computers to the display	47
How to bind the USB inputs to the video connections	47
To switch between connected computers	47
Customizing bezel buttons	48
Changing the bezel function buttons	48
Changing the bezel function button mode	49
Adjusting the bezel button LEDs	49
User presets	50
Creating and saving a user preset	51
Activating a user preset	51
Migrating user presets between displays	52
User presets element	52
User preset file	52
User preset example	52
Automatic input-based presets	52
Navigating the on-screen display menus	53
Color settings menu	53
Video input menu	55
Image adjustment menu	56
Split/PIP control menu	57
Load/save user preset	59
Calibration	59
Language menu	60
Management menu	61
Menu and message control menu	65
Information	66
Auto EDID update	67
Display calibration	68
Factory calibration	68
Preparing for calibration	68
Enabling the internal processor	68
Enabling calibration and external instruments	69
Calibration environment	69
Calibration frequency	70
Display warm-up from cold power on	70
Warm-up mode	71
Backlight stabilization after luminance change	71
User calibration methods	71
Menu-driven user calibration	72
Recalibration active preset	72
Configure and calibrate preset	72
Color preset	72
Color gamut	72
White point	73
Gamma/EOTF	73
Luminance	73
StudioCal XML calibration	74
Calibration automation	74
Scheduling automated calibrations	74
Viewing the calibration schedule	75
Using a StudioCal XML file for automation	75
Accessing automatic calibration validation information	75
Aligning the internal colorimeter to an external reference instrument	76
Automatically warming up the display at start of the day	76
Using external measurement instruments	77
Klein Instruments K10 and K10-A colorimeters	77
Configuration	77
Usage guidelines	78
Photo Research spectroradiometers	78
Configuration	78
Usage guidelines	79
Konica Minolta CA-310 colorimeter	79
Configuration	79
Usage guidelines	79
X-Rite i1Pro 2 spectrophotometers	80
Configuration	80
Usage guidelines	80
X-Rite i1Display Pro colorimeter	80
Configuration	80
Usage guidelines	80
Colorimetry Research CR-250 spectroradiometer	81
Configuration	81
Usage guidelines	81
Using the StudioCal XML schema	82
File name and disk format	82
Declaration	82
Comments	82
Root element	82
Calibration element	83
Calibration info element	83
Core calibration tags	83
Preset	83
Target_primaries	84
Gamma	85
Core calibration tag examples	85
ICC profile generation	86
Optional calibration tags	87
Measurement averaging	87
Set linear segment	87
Select Klein cal file	87
Contrast ratio limiting	87
Validation	88
Validation on/off	88
Validation pattern parent element	88
Validation pattern child element	88
Validation code example	88
Validation results file	89
LUT archiving, downloading and uploading	90
Archive LUT	90
Download LUT	90
Download LUT parent element	90
Download LUT child element	90
Download LUT example	91
Upload LUT	91
Upload LUT parent element	91
Upload LUT child element	91
Upload LUT example	92
LUT folder structure	92
Using non-supported measurement equipment	93
Making measurements with non-supported measurement equipment	94
Non-calibration elements	95
Custom video input names	95
Video input element	95
Input info element	95
Custom video input name example	96
Custom markers	96
Marker parent element	96
Marker info parent element	96
Marker position element	96
Marker style element	97
Custom marker example	97
User presets	98
User presets element	98
User preset file	98
User preset example	98
Display settings uploading and downloading	98
Remote management	100
Configuring remote management	100
Turning remote management on	100
Checking and setting the display’s IP address	100
Setting dashboard security	101
Logging in to the web dashboard for the first time	102
Logging into the web dashboard	102
Navigating the dashboard	103
Navigating between the different dashboard sections	103
Logging out of the dashboard	103
Support and troubleshooting	104
Solving common problems	104
Button lockouts	104
Product support	105
Preparing to call technical support	105
Maintaining the display	106
Maintenance guidelines	106
Cleaning the display	106
Shipping the display	106
Technical specifications	107
Preset display resolutions	108
Entering user modes	110
Energy saver feature	110
Accessibility	111
Supported assistive technologies	111

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use_uv:

(optional)

Speciﬁes

whether CIE xy or CIE u’v’ values are provided for the primaries and white point.

This attribute accepts the values “xy” or “uv”. If this optional attribute is omitted from the tag, xy values are

assumed.

external:

This attribute is used in conjunction with the “external_primaries” tag to allow the use of

nonsupported measurement instruments. Used as a

ﬂag,

this attribute supports values of “TRUE” and

“FALSE”. It should be set to FALSE unless an external_primaries tag is also included in the StudioCal XML

ﬁle.

Use of this tag is discussed later in this user guide.

Gamma

This tag allows you to specify the gamma or EOTF to use for your color space preset. The tag contains one

attribute and is structured as follows:

The value attribute supports the following values:

1.0–3.0:

Power function gamma values. Typical values are 2.2, 2.4, and 2.6.

sRGB:

Generates an sRGB EOTF per the sRGB standard. This EOTF curve is roughly equivalent to a 2.2 gamma

with a linear segment in the lower region.

BT1886:

Generates an ITU-R BT.1886 EOTF. This EOTF is designed to more closely represent the desired

response for video production and is typically used with the BT.709 and BT.2020 color primaries.

EPD:

Generates an Equal Probability of Detection EOTF, as

speciﬁed

in the Society for Information Display

Information Display Measurement Standard document. This grayscale function is designed for use when

viewing satellite imagery and is intended to make dimmer low-contrast objects of interest more easily

readable when residing near brighter areas in the image.

Core calibration tag examples

The following are examples of a StudioCal XML

ﬁle

showing the usage of the core calibration tags. The

ﬁrst

example instructs the display to calibrate one preset with BT.709 primaries, a D65 white point, and a BT.1886

gamma. It stores the calibration in the user memory location.

<?xml version="1.0" encoding="ISO-8859-1"?>

<calibration_info>

<target_primaries rx="0.640" ry="0.330" gx="0.300" gy="0.600"

bx="0.150" by="0.060" wx="0.3127" wy="0.329" wY="80"

external="FALSE"/>

</calibration_info>

</calibration>

</studiocal>

Core calibration tags