On Sat, Mar 31, 2012 at 9:24 PM, Achim Vollhardt <avoll...@physik.uzh.ch> wrote: > I do work in high energy physics and we use LEMO and other standards. For > some years now, I have started to advertise against LEMO (in particular the > LEMO 00 size), as it is VERY sensitive to mechanical defects and partial > connection (yes, you can ..). We have found very often defective LEMO > connections, which could only be detected via time domain reflectometry. Or > LEMO interfaces, which changed impedance significantly when rotating them in > the fully mated position.. this list could be extended a lot more. And this > famous click when mating is inaudible in typical high energy physics > electronics barracks.. too much fan noise. > > In addition, for the very fast signals of modern DAQ systems, LEMO 00 is > just not up to speed (literally) anymore. If size is not of ultimate > importance, we switched to SMA, or SMC if size matters.
I am very interested in this, since we just decided to use LEMO 00 over SMC in some of our designs: http://www.ohwr.org/projects/fmc-projects/wiki/SMC_vs_LEMO This is for ~100MHz work, so bandwidth was not an issue. Compatibility with legacy was the major criterion in our case. I would be interested in reading what people are using as coax connectors in space-constrained environments like FMC, and why. Cheers, Javier _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.