All: Hi. I was wondering if anyone on this list knows what the purpose of this compliance test for gigabit ethernet is. The test is the peak voltage asymmetry test for points "A" and "B"; they must match their peak voltage amplitudes to within 1%. How does measuring this asymmetry come into play (i.e. how does the symmetry affect my system in tangible terms)? If I have 1.5% asymmetry, does it shorten my maximum cable length and by what magnitude? How about 2% asymmetry? Does it increase my BER and by how much. What mechanisms are at work here? Or is this a test that has very little meaning on the functioning of a gigabit Ethernet link? Any insight/help is appreciated. Regards, Matt ------------------------------------------------------------------ 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.net 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