Hi, My name is Shalom Kattan. I just joined Time-Nuts. I have been in the time and frequency industry for over 30 years. I started my career at HP in the frequency counters division in 1981 (worked on the HP5334A Counter and the HP5371A TIA). I am the founder of Carmel Instruments which makes counters and clock sources. See www.carmelinst.com We just announced the NK732 Counter which makes 20 million measurements per second, each with 2 ps resolution (single-shot) I will be happy to answer general questions about measurement methods. Regards, Shalom Kattan Carmel Instruments 408-866-0426 x112