On 27 December 2016 at 20:50, Adrian Godwin <artgodwin at gmail.com> wrote: > How similar are the 131A and the 132A ? Is it possible to upgrade a 131 > into 132 ? The one big difference I know of (there must be others) is that the 131A "only" has a time resolution of 500ps, whereas on the 132A it is 150ps. Peter