On Wed, Apr 9, 2014 at 8:58 AM, David McQuate <mcqu...@sonic.net> wrote: > The output looks differentiated, as would happen if the wire connecting the > internal circuit to the output pin became open, leaving only a very small > capacitance to couple the square wave out.
I agree, I had a similar problem on an oscilloscope input some time ago. It was a cold solder joint. It must definitely repairable as long as the shielding can be opened safely. Regards Frank IZ8DWF > > Dave > > On 4/8/2014 11:46 PM, Chris Albertson wrote: >> >> My Bliley square wave 10MHz OCXO was working just fine for close to 30 >> hours until a few hours ago. Now it puts out a rather noisy waveform >> about >> one volt peak to peak. >> >> Two questions: >> (1) Are these things repairable, the metal can is soldered. >> >> (2) As you can see in the attached oscilloscope photo the OCXO still puts >> out a strong 10MHZ component. What is the best way to filter this and >> recover a good 10MHZ square wave? >> >> In the linked photo, both channels are set to 1 volt per division. The >> large sine wave is from a Trimble Thunderbolt and the smaller wave is from >> the failed ocxo The EFC is left open (disconnected) and a you can see the >> frequency is spot on 10MHz. >> >> https://www.dropbox.com/s/0gy3yobd4myi4vp/waveform.jpg > > > _______________________________________________ > 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.