Hi, experts, I am new to this field and I get a question for you guys. I saw a formula saying BW=0.35/Trise. So for a TDR module with 30ps rise time I should get a BW of 11.67GHz. Am I correct on this? I saw from a TDR spec that for 30ps rise time, the BW was 20GHz. That confused me. Thanks. Kevin ------------------------------------------------------------------ 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 Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu