Hi all: I'm doing something about SI ,as you know, power and ground noise is very important in high-speed digital design. My problem is how to analyze the noise. Which software or tools is better? How to measure the noise(especial ground bounce and ground noise) in the board? And how much the noise level we can't stand ? Or could you tell me who do the best in this field? Thank you! Best Regards Moore MO (Modaochun) Huawei Technologies Co.,Ltd. Tel: 86 755 6540544/6540808 Fax:86 755 6544730 Email:modaochun@xxxxxxxxxx website: http: // www.huawei.com ------------------------------------------------------------------ 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 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