Only the FSI XM Series displays can be accurately calibrated via 3D LUTs generated using LightSpace CMS.
- XM311K, XM551U, XM650U, XM651U
Additionally, the XM311K display also has direct 3D LUT integration, but has different calibration requirements as defined below.
Further, all FSI displays equipped with first, second, or third generation Colour Fidelity Engines (CFE, CFE2, or CFE3) are compatible with LightSpace CMS for 3D LUT calibration, but do not have direct integration. LUTs must be exported from LightSpace and loaded into the display via FSI's provided update cable.
Before starting calibration set all gain, bias, and rotary knob controls back to default.
From the display's Colour menu set Colour System to LightSpace and set the LUT Mode to your choice of Normal or Advanced. LightSpace is compatible with both modes and will automatically detect and load the correct LUT size and format for your LUT MODE. See FSI's own display user manual for details on Normal vs. Advanced Mode operation.
Next, after allowing the display to warm-up sufficiently, set the Gamut selection to match the colour space you plan on calibrating for (Rec709, P3, etc.) Then set the Luminance Mode to the desired setting. For example, 100 for SDR, and 1000 HDR with the XM311K.
The last menu selection to consider is the Range selection. The Range setting should be set to match the output range of your test pattern generator source. For example, if using Resolve as your test pattern generator with Resolve set to Video Range the display should also be set to Video Range. A mismatch between your test pattern generator output range and your display's Range setting will lead to an incorrect calibration result.
After the display has warmed-up, connect the ethernet port to your local network. The display will obtain an IP address via DHCP. If your display fails to obtain an IP address, please unplug the ethernet cable, reboot the display, and connect the ethernet cable only after the display has completed its boot cycle. The assigned IP address can be seen from the monitor's System menu. Take note of this IP address as you will need it to connect LightSpace to the display.
From LightSpace click on the File menu, then select Upload. From the Upload dialog window select XM as your device type. Next type in the display's IP address, which can be found on the display's System menu.
Select the Colour Gamut memory position where you will save your LUTs. This selection should match the Gamut selection made previously.
With NULL Cube checked within LightSpace select 1D+3D, then press upload. This will load unity LUTs to the both the Front 1D LUT and 3D LUT memory positions. Next do the same for the back 1D LUT selection, with NULL cube checked, press upload. By uploading NULL cubes to these three positions you are effectively bypassing any previously loaded calibrations so that you may profile the display in its native, uncalibrated, state.
Once NULL LUTs are loaded in all 3 positions press Close within the Upload window.
The Upload menu is located under 'File/Upload'.
Uploading a 'Null Cube' will re-set all the display parameters, so the Brightness/Contrast/Black-Level settings will need to set as per the Initial Display Set-up guide.
As FSI displays do not have suitable in-built patch generation and external patch generator will be required, such as BoxIO, Resolve, or similar.
With your selected patch generator, profiling can then be performed as normal, using the probe connected to LightSpace, with the ext eternal patch generator displaying the patches via the normal LightSpace patch window.
After profiling a Calibration LUT can be generated as normal, and with the LUT held within LightSpace navigate back to the 'Upload' menu, and with the 'NULL Cube' tick box un-ticked, and 1D + 3D selected, the present LUT displayed within LightSpace can be 'Uploaded' into the FSI display. The location to upload to is selected via the 'Select Preset' option.
Back 1D LUT
You may get better final calibration results by calibrating with a Back 1D LUT plus 3D LUT. If you plan on utilizing the Back 1D LUT for calibration please remember to calibrate for this position first, upload to the display, then profile with this Back 1D LUT active. Your 3D LUT will then be created using this profile with Back 1D LUT active as the destination.
Note: OLED displays can suffer from burn in, especially at high luminance. For this reason windowed patterns should not be used for extended periods of time.