Hi If you put a filter on the output of the DIP (or other pkg) XO, you can demo a sine wave into a scope as well as a square wave. You will likely need a generator to power the scopes if it is outdoors so consider that as well. Not all generators supply nice clean power ….
Bob > On Feb 26, 2016, at 3:20 AM, Hal Murray <[email protected]> wrote: > > > [email protected] said: >> I'm going to be taking some oscilloscopes to a hamfest this summer, and I >> am going to have a truck full of stuff anyway, and would like to avoid >> hauling my signal generator to provide a demonstration of the scopes. Does >> anybody have a 50MHZ+ OCXO or other oscillator with a coax(sma/bnc) that >> they would like to part with? Something that doesn't meet time nuts >> standards is perfectly fine, just want something that is faster than the >> built in calibrator on the scopes. > > Do you have any of the standard 14 pin dip osc packages in your junk > collection? You can probably run one off a pair of AA batteries. The square > wave output would be good for showing what a scope can do. Most of the not > high frequency osc packages have slow rise times. You might want to run it > through a buffer. A non terminated connection on a few feet of coax will > give you nice reflection spikes to look at. > > The best scope demo toy I ever saw was a Tek giveaway. It was a burst of > high frequency stuff with a low rep rate. There are all sorts of > opportunities for aliasing with digital scopes. > > The old skier avalanche beepers work pretty well too. Their burst is > something like 455 kHz modulated at 2 kHz. (I think they changed the > frequency 10 years ago.) > > > -- > These are my opinions. I hate spam. > > > > _______________________________________________ > 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.
