My use of the word 'grounding' was ill-advised. I was using the term loosely and probably confusingly to refer to the low voltage DC currents induced in the firewire cable when only partially connected. I obviously have only a vague notion of the firewire connection pinouts, but the firewire cable is the culprit in this fairly well-known problem, and has nothing to do with the AC current which 99 times out of 100 is essentially electrically isolated from the firewire by transformer and not in direct contact with any electronics by electronic standards (see http://www.sonyhdvinfo.com/showthread.php?t=7501 and the link referenced in the last post on this URL)
That said, I have many times 'gotten away with' hot plugging my camera, but I don't do it any more after reading about other people having problems. Apparently even turning things off isn't enough. I'll let the IEEE people explain why... ;-) Dell On Sat, Dec 13, 2008 at 12:31 PM, Ichthyostega <p...@ichthyostega.de> wrote: > teard...@kiberpipa.org schrieb: > > but i'm trying to understand how does this happen? > Just guessing from general elektrotechnics. > - hotplugging > - static electricity combined with a bad connection cable > - grounding problems > - broken electronics on the computer side end of the firewire connection > > Commonly, consumer electronics are't grounded at all by the AC connection, > the only grounding is via the shield of connection cables. The bad news > is that often there aren't any obvious signs when this grounding is flawed, > digital communication protocols are sometimes able to continue working, > maybe at reduced speed even if the connection is half way broken. > > Hermann > > > > > _______________________________________________ > Cinelerra mailing list > Cinelerra@skolelinux.no > https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra >
