You are correct that 8.3 is proper for pH.

Alkalinity is a topic of a bit more debate. Most people in the states would advocate alkalinity in the range of 10-14 dkH (3.5-5 meq/L). In Europe many tanks are kept in the range of 6-9 dkH (2.2-3.25 meq/L). This is why some test kits will show the normal range much lower than what you would typically hear being discussed as a normal range here on the boards. I try to keep mine around 10 so that I am on the cusp and not too far off regardless of which group's advice is correct.