On Fri, 2009-08-28 at 15:31 -0600, AGSCalabrese wrote: > I will be required to measure an analog pulses to a resolution of 8 > nano-secs. > Am I correct that this will require a scope that has a bandwidth of > 250 MHz and a sampling rate of 4 nanoseconds ? Are these pulses repetitive? If so you can get away with a scope with a lower sample rate. Otherwise yes, you'll need one that samples at 8ns or better. TTYL -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist