Scott, In a former life I did some 10 MB Ethernet NIC card designs. The IEEE spec for 10base-? (I can't even remember the spec number) called for cable not shorter than 4 meters. In fact, I think that the Ethernet cards would not even work with shorter cables. I don't know about other Ethernet speeds but I would check the IEEE Standards, they should tell you minimum length.
Hope this helps. Al Patrick Sr. EMC Engineer Scientific-Atlanta Inc. [email protected] -----Original Message----- From: Lacey,Scott [mailto:[email protected]] Sent: Wednesday, March 01, 2000 2:33 PM To: '[email protected]' Subject: Minimum Coaxial Ethernet Cable Length? To the group, Does anyone know if there is a minimum cable length requirement for coaxial Ethernet? I have an idea in mind for an EFT/Surge suppression method, but I need to know if there is any limitation on the short cable which will connect between the suppression point and the receiving device (I will leave the terminator on the receiving device). All connections will be BNC. I am concerned to know if there are any 1/4 wavelength type issues (due to connector discontinuities). Thanks in advance, Scott Lacey Test Engineer (EMC, Safety, Product Verification) The Foxboro Company Foxboro, Massachusetts, USA ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected] ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
