HP DreamColor Z31x Studio Display User Manual download pdf (Page 87)

709.ICC. Refer to your operating system and/or application documentation for information on where to store

these ICC proles on your computer and activate them.

Optional calibration tags

The following optional tags can be added to the core calibration tags to provide additional capabilities. These

optional tags must be placed before the <calibration> element; they cannot be nested inside it. None of these

tags are required to be in a StudioCal XML le.

Measurement averaging

This tag allows you to make and average multiple measurements. If you are using a colorimeter for

calibration measurements, you may want to make multiple measurements of lower grayscale levels to

compensate for the noise inherent in some colorimeters.

NOTE: As spectroradiometers have less low-grayscale noise, this option is not typically used when

measuring with those instruments.

The tag contains two attributes and is structured as follows:

<average_meas N="INTEGER" use_below_RGB="INTEGER"/>

N: The number of measurements to be taken and averaged. Integer values between 2 and 10 are supported.

use_below_RGB: The RGB grayscale value below which you wish to make and average multiple

measurements. A single 8-bit value between 1 and 255 is supported.

Set linear segment

This tag allows you to specify a grayscale value at which the gamma will switch from the calculated curve to a

pure linear transition to zero. This is designed to allow you to mimic the measured performance of some

projectors.

The tag contains one attribute and is structured as follows:

<set_linear_section value="INTEGER"/>

The value attribute supports 10-bit values between 1 and 1024.

Select Klein cal le

This tag is specic to the Klein K10 and K10-A and allows you to specify any cal le stored in the instrument

as the matrix used for measurements. The default cal le for the Z31x is 15 and that is the one calibrated at

Klein Instruments, but you may desire to generate your own matrix using ChromaSurf.

This tag contains one attribute and is structured as follows:

<klein_cal value="INTEGER"/>

The value attribute supports integer values from 0–89.

Contrast ratio limiting

In some workows—on-screen newsprint, for example—it is desirable to have a contrast ratio lower than the

display’s native contrast ratio. The display provides a tag for this workow. The tag has one argument and is

structured as follows:

<cr_set cr="150"/>

Optional calibration tags 77

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HP DreamColor Z31x Studio Display User Manual Page 87