Gurus, Does anyone have a basic schematic for Tektronix FET probe? I don't need proprietary details about the probes, but just a basic schematic of what we see looking into the probe, and relative to scope ground. The reason that I am asking is that I have a board that will not come up properly when the positive terminal of the probe is hung off of a DDR strobe line. No ground attachment required. With the probe disconnected from the scope at the scope, the problem does not exist. Anyone seen this before? Thanks in advance, James R. Jones ESG Signal Integrity Dell Computer Corporation (512) 725-1809 ------------------------------------------------------------------ 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