Hi all, I'm looking for a way to get galvanic isolation of a USB device (whatever it is). Do you know somewhere a company or a product or a way to get this isolation, I think that optocoplers won't fit the bandwidth. I need such product for USB high speed or at least USB full speed. Thanks in advance for your help.
isolated USB
Started by ●August 17, 2006
Reply by ●August 17, 20062006-08-17
"Mouarf" <toto@toto.fr> wrote in message news:op.tefbnuttlccc90@fabrice...> Hi all, > > I'm looking for a way to get galvanic isolation of a USB device (whatever > it is). Do you know somewhere a company or a product or a way to get this > isolation, I think that optocoplers won't fit the bandwidth.You can get a hub with isolation: http://www.bb-elec.com/product.asp?SKU=UISOHUB4 Leo Havm�ller.
Reply by ●August 17, 20062006-08-17
thanks a lot, if nearly fits the bill but it does not work for USB 2.0 but only USB1.1, does anyone know something that work for USB2.0? Thanks in advance Le Thu, 17 Aug 2006 12:45:40 +0200, Leo Havm�ller <leh@-nospam-rtx.dk> a �crit:> "Mouarf" <toto@toto.fr> wrote in message > news:op.tefbnuttlccc90@fabrice... >> Hi all, >> >> I'm looking for a way to get galvanic isolation of a USB device >> (whatever >> it is). Do you know somewhere a company or a product or a way to get >> this >> isolation, I think that optocoplers won't fit the bandwidth. > > You can get a hub with isolation: > http://www.bb-elec.com/product.asp?SKU=UISOHUB4 > > Leo Havm�ller.
Reply by ●August 17, 20062006-08-17
On Thu, 17 Aug 2006 14:14:19 +0200, Mouarf <toto@toto.fr> wrote in comp.arch.embedded: Please don't top post. Thank you.> thanks a lot, if nearly fits the bill but it does not work for USB 2.0 but > only USB1.1, does anyone know something that work for USB2.0? > > Thanks in advanceDo you realize that anything that is USB 1.1 conforming and works at full speed? A USB 1.1 hub will work with USB 2.0 host and device at full speed, just not high speed. -- Jack Klein Home: http://JK-Technology.Com FAQs for comp.lang.c http://c-faq.com/ comp.lang.c++ http://www.parashift.com/c++-faq-lite/ alt.comp.lang.learn.c-c++ http://www.contrib.andrew.cmu.edu/~ajo/docs/FAQ-acllc.html> > Le Thu, 17 Aug 2006 12:45:40 +0200, Leo Havm�ller <leh@-nospam-rtx.dk> a > �crit: > > > "Mouarf" <toto@toto.fr> wrote in message > > news:op.tefbnuttlccc90@fabrice... > >> Hi all, > >> > >> I'm looking for a way to get galvanic isolation of a USB device > >> (whatever > >> it is). Do you know somewhere a company or a product or a way to get > >> this > >> isolation, I think that optocoplers won't fit the bandwidth. > > > > You can get a hub with isolation: > > http://www.bb-elec.com/product.asp?SKU=UISOHUB4 > > > > Leo Havm�ller.
Reply by ●August 18, 20062006-08-18
> Do you realize that anything that is USB 1.1 conforming and works at > full speed? A USB 1.1 hub will work with USB 2.0 host and device at > full speed, just not high speed. >yes I do realize but my app needs high speed transfer to work correctly so a USB1.1 isolation is not enough for the application to work properly...
Reply by ●August 18, 20062006-08-18
Mouarf wrote:> > Do you realize that anything that is USB 1.1 conforming and works at > > full speed? A USB 1.1 hub will work with USB 2.0 host and device at > > full speed, just not high speed. > > > > > yes I do realize but my app needs high speed transfer to work correctly so > a USB1.1 isolation is not enough for the application to work properly...It is a common misconception to think that saying USB 2.0 is the same as saying USB High Speed. It may be true that USB 1.0 and 1.1 did not have High Speed and that USB 2.0 does have high speed, but USB 2.0 also has Low Speed and Full Speed. So saying USB 2.0 says nothing about the speed. If you need High Speed, you should say USB High Speed. It is the USB 2.0 that is then implied, not the other way around.
Reply by ●August 21, 20062006-08-21
> If you need High Speed, you should say USB High Speed. It is the USB > 2.0 that is then implied, not the other way around.Take a look at my first post, I told about High Speed...
Reply by ●August 21, 20062006-08-21
Mouarf wrote:>> If you need High Speed, you should say USB High Speed. It is the USB >> 2.0 that is then implied, not the other way around. > > > Take a look at my first post, I told about High Speed...-- "I need such product for USB high speed or at least USB full speed. " ^^^^^^^^^^^^^^^^^^^^^^^^^^^ It seems that USB 1.1 satisfies the "at least" part. Michael N. Moran (h) 770 516 7918 5009 Old Field Ct. (c) 678 521 5460 Kennesaw, GA, USA 30144 http://mnmoran.org "So often times it happens, that we live our lives in chains and we never even know we have the key." The Eagles, "Already Gone" The Beatles were wrong: 1 & 1 & 1 is 1
Reply by ●August 21, 20062006-08-21
"Michael N. Moran" <mike@mnmoran.org> wrote in message news:TogGg.40255$Uq1.26343@bignews6.bellsouth.net...> Mouarf wrote: >>> If you need High Speed, you should say USB High Speed. It is the USB >>> 2.0 that is then implied, not the other way around. >> >> >> Take a look at my first post, I told about High Speed... > > > -- "I need such product for USB high speed or at least USB full speed. " > ^^^^^^^^^^^^^^^^^^^^^^^^^^^ > > It seems that USB 1.1 satisfies the "at least" part. > > > Michael N. Moran (h) 770 516 7918 > 5009 Old Field Ct. (c) 678 521 5460 > Kennesaw, GA, USA 30144 http://mnmoran.org > > "So often times it happens, that we live our lives in chains > and we never even know we have the key." > The Eagles, "Already Gone" > > The Beatles were wrong: 1 & 1 & 1 is 1 >Pathetc.. you guys spent more time with etiquette and nitpciking than helping.
Reply by ●August 21, 20062006-08-21
Elan Magavi wrote:> "Michael N. Moran" <mike@mnmoran.org> wrote in message >> Mouarf wrote: > >>>> If you need High Speed, you should say USB High Speed. It is the USB >>>> 2.0 that is then implied, not the other way around. >>> >>> Take a look at my first post, I told about High Speed... >> >> -- "I need such product for USB high speed or at least USB full speed. " >> ^^^^^^^^^^^^^^^^^^^^^^^^^^^ >> It seems that USB 1.1 satisfies the "at least" part. >> >> Michael N. Moran (h) 770 516 7918 >> 5009 Old Field Ct. (c) 678 521 5460 >> Kennesaw, GA, USA 30144 http://mnmoran.org >> >> "So often times it happens, that we live our lives in chains >> and we never even know we have the key." >> The Eagles, "Already Gone" >> >> The Beatles were wrong: 1 & 1 & 1 is 1 > > Pathetc.. you guys spent more time with etiquette and nitpciking than > helping.Who says we are here to help? Our purpose is to carp and fuss about foolish misuse of usenet, such as failure to snip (horrible example above) and lack of precision. The sacrifice of at least one rooster on the block is necessary before any help can be offered. Better results are had with sheep, and even better a bull. Without us all is chaos. -- Chuck F (cbfalconer@yahoo.com) (cbfalconer@maineline.net) Available for consulting/temporary embedded and systems. <http://cbfalconer.home.att.net> USE maineline address!
