> > What is the rating of my Techtronics 475? > We used them at work for required adjustments to tolerances > of 2/10 nanoseconds. > > Thanks es 73, de Jim KG0KP
For any common model you can easily find info on the web if you aren't sure. Bandwidth for scopes is like horsepower for a performance car. It'll be the first spec that's mentioned. A handy rule of thumb for the 10% to 90% rise time is ln(9)/(2*pi*bandwidth) = 0.35/bandwidth. So a 200 MHz scope has an inherent rise time of a bit less than 2 ns. The 485 comes in at an even 1.0 ns and I always suspected that's why they targeted 350 MHz for its bandwidth spec. Exercise for the reader: derive this formula assuming a single pole filter response. 73 and thanks for listening Carl WS7L K3 #486 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
