On 11/23/05, Vasile Surducan wrote: > > What I can say, I have a Lecroy LT262 350MHz/1GS/s but when I need to > measure noises, I go back to Philips PM200 or to an antique russian > scope. > What is digitally is good for math signal computation and triggering > fancy signals, but when you need to see really small signals without > expensive tricks, an analogic scope is the best. > > Vasile > The Lecroy should be quite good. At work I am using the LT264 and I like it. The zoom memory could be bigger though. I was developing a universal power supply (12V-240V DC and 24V-240V AC) powered optic sensor for most of this year and the scope proved to be very good. Of course this is not cheap and should not be recommended to hobbyists. I do not know about PM200. I used to use a digital/analog Fluke/Philips scope and it is pretty bad as well (slightly better than the TDS3032 but much worse than the HP54600B). By the way, one of the HP54600B had an old firmware and we were able to play Tetris on it. Just need to press one or two buttons when power up and we could select the game option. That was in the year 1999. Later when we sent it out for caliberation, they changed the firmware and removed the game. The HP54600B probably is one of the best budget scope in the 1990's. It is still servicable now. TDS3xx/5xx should be better but they must be more expensive than HP54600B. Regards, Xiaofan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist