Here's a general guide on using and understanding the i1Profiler software, particularly with a device like the i1iO (a colorimeter and display calibration device), assuming the "311" might refer to a specific device model or software version:
Version 3.1.1 introduced preliminary stability for HLG (Hybrid Log-Gamma) and PQ (Perceptual Quantizer) curves for HDR monitors. While later versions refined this, 311 made HDR calibration reliable enough for YouTube creators and indie filmmakers. i1profiler 311