A DSO works great for this. One of the few things that I prefer a DSO for over an analog scope. For an analog scope, it's easier to tell the scope is triggering once per second than actually see the pulse. To see the pulse, turn the lights out, turn the sweep and intensity up and don't blink. IIRC, my TBolt 1 PPS is about 5 uSec wide and about 5 VDC.
Joe -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Chris Albertson Sent: Monday, August 20, 2012 12:53 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Trimble T Lassen 2 - suitableantenna....advice.....questions On Sun, Aug 19, 2012 at 9:27 PM, Robert Darlington <[email protected]>wrote: > It's a pain to capture on any scope, but really easy to see with an > LED across the output. it's not bright, but definitely easy to see on > my tbolt. That is true. One must have very good eyes to see a one microsecond pulse that only happens one per second. Blink and you miss it. The LED might work but the "for sure" way is to send the PPS to a flip flop so you can see the state change at 1Hz. Use a solderless bread board and 5V power supply. -- Chris Albertson Redondo Beach, California _______________________________________________ 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.
