Download the spec from www.usb.org. You find a answer to some of your questions in the usb2.0 pdf file. M. On Thu, Dec 18, 2003 at 08:44:17AM -0000, Steve Rogers wrote: > I need to pass USB signals over a cable. I am not familiar with USB. = > Could anyone let me know the best way to do this? Useful info would be:- > > 1. Type of cables to use (I am concerned about the system working but = > more so Radiated Emissions) > 2. Any limits on cable run lengths > 3. Termination impedances (If needed) > 4. Filtering recomendations=20 > 5 Any other useful info > > Thanks in advance > > Steve Rogers B.Eng (Hons) C.Eng IEE > RF Design Engineer > > Micromill Electronics Limited > Leydene House > Waterberry Drive=20 > Waterlooville Hampshire > PO7 7XX > > Tel: +44 (0) 23 9236 6600 > Fax: +44 (0) 23 9236 6673 > > Registered No. 1456922 (England). =20 > Registered Office Brook Road > Wimborne, Dorset BH21 2BJ > > *********************************************************************** > > "This email and any attached files are confidential and may be legally = > privileged.If you are not the addressee, any disclosure, = > reproduction,copying, distribution,, or other dissemination or use of = > this communication is strictly prohibited. If you have received this = > transmission in error please notify the sender immediately and then = > delete this email. > > It is the policy of Micromill Electronics Limited that no legally = > binding statements, representations or commitments (collectively = > 'statements') may be made by email. Any such statements must be = > confirmed either by facsimilie or by post before they will have legal = > effect. The sender of this email is not authorised to commit the company = > in any way and the addressee is hereby formally notified of that fact." > > *********************************************************************** > > > > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > List technical documents are available at: > http://www.si-list.org > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > Matthias ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu