Craltech

ColourSpace Integration

Craltech calibration is controlled via the Hardware Options menu, accessed via the Profiling window.

For a User Guide on the workflow used for display calibration see the 3D LUT Calibration guide, combined with the specific Craltech information contained within this page.

Initial Setup

• If required, make sure the correct drivers are installed
  (If necessary, verify via Windows Device Manager)
• Connect the Craltech monitor to the ColourSpace PC via a USB or network connection as required, as well as a direct video connection with valid signal, and start ColourSpace
• Set the desired set-up options via the Settings menu, as required
• Open a ColourSpace Profiling window, select Hardware Options, and select Craltech from the Hardware drop-down list
• The soft IP and soft port need to be set in the monitors OSD, network settings
  (Powercycle the monitor)
• Press connect and wait for the monitor to connect - this will take some time
• The Gamut option selects the gamut or DIT slot that is used
• To make sure there is no existing calibration data active within the selected Profile/Load/LUT/Slot, and associated colour space selection, etc., select Unity Bypass from the Select LUT option, and press Upload
• Using Calibration Patches select the desired patch option to use for profiling
  (If possible, Auto uses the patch settings defined within the ColourSpace Settings window, or else the closest available patch settings - Custom uses the Craltech Options to set patch size)
  Note: The keyboard 'O' key can be used within the Manual Measure and Hardware menus to quickly Disable/Enable the TPG

Potentially, when Unity Bypass data is Uploaded all monitor settings will be nullified. Should it be desired that different LUTs and other settings remain as defined, upload the Default Unity LUT, which uploads just the LUT, and does not reset any additional settings. Set necessary settings, such as Brightness/Contrast/Black-Level, before any LUT Upload.

Profiling Operation

To profile the Craltech monitor with ColourSpace navigate to the desired profiling mode - Manual Measure or Display Characterisation.

The screen of the Craltech monitor will mimic the colour displayed, using the patch settings defined via the Hardware Options and Settings menus.

Profiling can then be performed as normal, using the probe connected to ColourSpace, and with the Craltech screen displaying the required patches.

Alternatively, an external TPG can be used.

• Open a second ColourSpace Profiling window, select Hardware Options, and select the required TPG from the Hardware drop-down list
  (Refer to the relevant TPG User Guide for further operational information)
• The probe must be connected to the same Profiling Window as the TPG

Any patch generator can be used for SDR profiling, including direct HDMI/DVI/DisplayPort connection from the ColourSpace PC, with HDMI to SDI converter if required. For HDR/HLG/Dolby Vision, if applicable, correct metadata may be required within the video signal, requiring a dedicate TPG or metadata injector, unless the display can be manually forced into the required input format.

LUT Generation

After profiling, a Calibration LUT can be generated as normal within ColourSpace LUT Tools, and saved into the library.

When generating the calibration LUT within ColourSpace, the best accuracy is attained by using a large LUT Generation Size, especially when the LUT Upload will be a combination of 1D LUT and 3D LUT, regardless of the LUT sizes used within the monitor.
(Note: Many hardware manufacturers do not advertise the LUT sizes used.)

The benefit in using a large LUT Size is twofold.
First, when the final uploaded 3D LUT size is small there is still major benefit in using a far larger LUT Generation size within ColourSpace, due to a combination of standard Nyquist over sampling, as well as a more accurate extraction of the final smaller 3D LUT from the larger generated LUT.
And second, setting a larger native 3D LUT size results in increased resolution for any 1D LUT extracted from the 3D LUT and uploaded independently, or as part of the background LUT Upload process.
See: LUT Generation Size.

LUT Upload

With the LUT still held within ColourSpace navigate back to the Hardware Options menu, and select the desired LUT from within the Select LUT options, and Upload into the select Gamut slot.

Calibration Guides

3D LUT Calibration Manual Calibration