[c-nsp] Galvanic isolation for Ethernet?
Victor Sudakov
vas at mpeks.tomsk.su
Mon Aug 18 10:59:32 EDT 2014
A.L.M.Buxey at lboro.ac.uk wrote:
>
> > > http://datainterfaces.com/surge-protectors.aspx
> >
> > They do not seem to offer galvanic isolation, I think they use gas
> > discharge modules. How do I know they are any better than those we
> > already have (APC ProtectNet)?
>
> I dont. they are a choice thats out there
The choice is really big, Google gives many vendors and a wide range
of models of Ethernet protectors.
> - and define your 'galvanic isolation' ;-)
Well, er, http://en.wikipedia.org/wiki/Galvanic_isolation ;-)
There are many methods, optical is one of them. What kind of optical
isolation devices do you use?
When I worked as a sound operator many years ago we used the
transformer method a lot. In fact, our mixing consoles had symmetric
transformer inputs. But I digress.
>
> > You are not advising them from your own experience, are you?
>
> nope. I havent used them as we have optical isolation (I feel I am
> now repeating myself) BUT if anyone has used them or if you try
> one out then please come back with your experience of it.
>
My experience so far is that the current model we use does not really
protect. I will report later which model is that. The location where
the last switch died is remote and normally unmanned.
--
Victor Sudakov, VAS4-RIPE, VAS47-RIPN
sip:sudakov at sibptus.tomsk.ru
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