Hi One of the practical uses of a fast edge source is to measure the bandwidth / performance of a high speed acquisition circuit. It’s rare to find one that will not limit a ~30 ps rise time edge.
Bob > On Oct 17, 2017, at 3:30 AM, Magnus Danielson <[email protected]> > wrote: > > For the HP54542A oscilloscope with 500 MHz BW, the risetime of the input will > dominate. Recall that the total risetime is the square root of the signal and > input channel risetimes squared and summed. So, it is expected. If he was > using a CSA803 he would see significantly less. > > Cheers, > Magnus > > On 10/16/2017 10:57 PM, paul swed wrote: >> It did make it to the post. >> Question. Rise and fall times are sub 40ps is that a typo in your email. >> Regards >> Paul >> WB8TSL >> On Mon, Oct 16, 2017 at 10:45 AM, BIll Ezell <[email protected]> wrote: >>> I rushed out and ordered one, and I have to say, I'm impressed. >>> The test report it came with states 34.4 ps risetime / 32.13 ps falltime >>> 8.6% overshoot measured with a Tek CSA 803A. >>> I hooked it up to my wonderful HP 54542 2 Gsamples/sec scope and got >>> exactly what I would expect, 496 ps risetime 7.6% overshoot. >>> >>> Screenshot attached, don't know if it will actually make it into the post. >>> >>> This is exactly what I need for adjusting various of my time-related >>> instruments. >>> >>> -- >>> Bill Ezell >>> ---------- >>> The day Microsoft makes something that doesn't suck >>> will be the day they make vacuum cleaners. >>> Or maybe Windows 10. >>> >>> >>> _______________________________________________ >>> time-nuts mailing list -- [email protected] >>> To unsubscribe, go to https://www.febo.com/cgi-bin/ >>> mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
