Chris, The answer is yes (as long as the network is 'sufficiently' linear). The finite rise time shows up as filtering, what happens in all simulations or measurements anyway, even if we neglect the effect of risetime. If you need the impedance of a power distribution network, the quantization of the receiving instrument will set the noise floor. Regards, Istvan Novak SUN Microsystems Chris Cheng wrote: >I can understand the merit of a step response and direct read out of = >impedance profile. >Will it be easy to also include a mode with a sharp pulse instead of = >step for an impulse response ? If you have a circuit to generate a 35ps = >step, can you use it to generate a 35ps pulse also ? I think there are = >steps you can do to convert one to the other but a direct impulse = >response is just too good to pass up. >Network analyzer on the cheap. >Thanks in advanced, >Chris > > > > ------------------------------------------------------------------ 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 FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org 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