Hello, My question is regarding scope probe attenuation. I have a Tektronix TDS640A oscilloscope which has four channels designed for either 50 Ohm or 1M Ohm probes I have a 1K Ohm probe which works as far as displaying a wave form but the amplitude is considerably less than it should be. Does anybody know an equation that I can apply to find out the exact difference in attenuation between this probe and a 50 Ohm probe your help is appreciated. Adam ------------------------------------------------------------------ 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