); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I presume it has a calibrated delayed TB how about using that ?? Alan G3NYK
----- Original Message ----- From: "Brooke Clarke" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Sent: Tuesday, October 23, 2007 11:05 PM Subject: [time-nuts] Scopes and 1 PPS signals? > 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.