Hello!! All, I am doing Signal Integrity Analysis through Specctra Quest and Signal Explorer. Now I have defined the stack and all other details. The problem what I am facing is that track impedance given by SPecctra Quest and Signal Explorer are different. In Specctra Quest we can get the parasitic impedance and in signal explorer it gives through the topology. Now I wanted to know that which one should I consider. Because depending on this I have to not only simulate my tracks but also if needed change the stack so as to bring the impedance in range of 50 ohm +/- 10%. So I wanted to confirm as which impedances I should take into consideration either of Specctra Quest or SigXplorer. Thanks in advance. Regards, Viral Viral S. Shah Sr. Design Engineer, Paxonet Communications India Pvt. Ltd. (Formerly CoreEl Labs Pvt. Ltd.) 620, 6th Floor, 'B' - Wing Carlton Towers, Airport Road, Bangalore - 560 017. India Tel. No. : 91 - 80 - 5216932/33 Fax No. : 91 - 80 - 527 2669 www.paxonet.com Viral S. Shah Sr. Design Engineer, Paxonet Communications India Pvt. Ltd. (Formerly CoreEl Labs Pvt. Ltd.) 620, 6th Floor, 'B' - Wing Carlton Towers, Airport Road, Bangalore - 560 017. India Tel. No. : 91 - 80 - 5216932/33 Fax No. : 91 - 80 - 527 2669 www.paxonet.com ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field 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