Thanks for pointing out my "schoolboy's error", there,
Kawa (comes of trying to do too many things* at once ... but no excuses, really).
Yes, like you perhaps, I have become a bit bored with this thread now. After all, the orginal question has been dealt with over and over. But I can't help but wonder if there's more to that (the original question) than meets the eye. My read of the situation is that
filipespace is doubting his ECG simulator!

*
Like trying to make the tea, and talking to my colleague, for example.