thanks for the replies. It seems that the syntax is the same as Excel, not surprisingly, so all working now. No doubt there'll be more questions in the future

Now sorted - many thanks. It turns out that the problem was entering the wheel circumference as 1647 (mm) rather than 1.647 metres, which it obviously didn't like. It pays to read the instructions correctly

Now, can anyone answer my query re formula syntax?

Am using latest version of Analysis software but cannot see how to make 'gear' standard variable work. I can enter a custom formula to calculate revs/speed so can get a noisy trace to deduce gear selected but I don't think this is how this function is supposed to work. I know from reading other thre...