Sorry. "click" is a bad choice of words. It's more a feel as you mate them than an audible click.
-John ============= > Dear John and all, > > 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. > > About this dreadful OPERA fiber connector: > > It very much looks like a FC connector. It has a polarisation nut and I > have to confess having misconnected them more than once myself. > It might have been beneficial to shorten in this standard the thread > length so there is no possibility to engage the thread (not even > partially) when not properly aligned. As the thread is indeed fairly > long, you can do what seemed to have happened in OPERA. > > > I acknowledge the importance of QA, but also some design-inherent > features like low power indications should be in place to prevent these > things from happening. > > Regards, > Achim > > _______________________________________________ > 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. > > _______________________________________________ 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.