); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi Brook,
You could try using a 74123 (or newer variants) retriggerable one shot to extend the pulse width to a level that would allow you to see it on the scope. Bill....WB6BNQ Brooke Clarke wrote: > Hi: > > While trying to figure out the O-1814 Rb source I found a 1 PPS signal that's > less than 10 us wide. But using an HP 54501A DSO it's almost impossible to > determine the period. http://www.prc68.com/I/O1814.shtml > > If the display is 1,000 dots wide: > at 2 us/sq the trace takes up about 4.5 squares or 450 dots, > at 200 us/sq the trace takes up about 0.045 squares or 4 dots but the second > pulse is way off screen. At slower sweep speeds you can't see the pulse. > > Are there scopes that allow the period of a narrow pulse to be measured that > don't cost an arm and leg? > > -- > Have Fun, > > Brooke Clarke > http://www.PRC68.com > http://www.precisionclock.com > http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Cam > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.