Hi Morris
I had some misleading info regarding the PA242W that I just bought, including from the retailer who ordered it.
The Spectraview II software is not built in to my screen and this is different to the "Spectraview engine". My screen came with some (in my opinion) fairly useless software, but not Spectraview. There was confusion because in some markets you can buy just the screen and in others you can buy the screen plus Spectraview plus the puck, and in some places you have the choice.
NEC saw me right and supplied Spectraview plus the puck (relabelled X-Rite puck).
While the screen was very well calibrated from new, when you're paying that sort of money you want the last few % of accuracy, its worth ensuring you get Spectraview II plus a compatible puck. Hence, you need to confirm that it comes with the "Spectraview II software".
There's no SpectraView software built into the screen. It's a separate software product you download after purchase. It can be bundled with the display with an instrument. Or it may not be as you've seen and reported.
As for the SpectraView engine, what is it, what does it do? In short:
1. Uniformity correction
2. Aging compensation
3. Temperature compensation
4. Orientation compensation
5. 3x 1D LUTs
6. 3D LUTs
7. Color gamut mapping
8. Gamma correction
9. Black level correction
10. Ambient light measurement and compensation
11. Backlight luminance measurement and stabilization
12. Picture-in-Picture / Picture-by-Picture
13. Color blindness simulation
14. Metamerism correction
15. Hue/Saturation/Offset adjustment