2 questions about XTAL trimming:
1. In the FAQ, it is mentioned that the BTLE spec assumes a +/- 50ppm deviation in which it should still operate. In the same chapter, you advise to reach an accuracy of +/- 15ppm to compensate for future aging, is this including influences by temperature?
2. In the 'AN-B-020_v1.3_End product testing and programming guidelines.pdf’ it is advised to reach an accuracy of +/- 5ppm, this contradicts to the value mentioned in the FAQ. Which one is the correct one, 5 or 15ppm, and does that include influences by temperature?