ChromaPure’s latest version (2.2.7) resolves all read issues using the JETI 1211 with all display types.
The problem was that the 1211 is so sensitive that readings would be affected by the cycle rate of the display. Surprisingly, the cycle rate of a display is not as simple as 60 for NTSC and 50 for PAL. Many displays have very strange cycle rates, which are determined, in many cases, by the backlighting technology. Once the software has detected this value and synchronized readings to it, there is no problem. Without this, repeatability could be a serious problem.