I have just about finished trashing this OCXO. I was able to run it outside of its case, and I have repaired the case, but I was unable to reinstall it into the case because I have to patch it on both the top and bottom. I could, perhaps, put it into a larger case and might do that later. For now, I will keep it as a potential future resource. The SC crystal is worth that much - they aren't cheap and nothing wrong with that. Also, just the bottom circuit board has problems, possibly another bad unit could be used for parts.
That leaves one final question. The suggestion that the POT adjusts the temperature set point for the crystal sounds very reasonable. It clearly does not significantly affect the frequency. At least, not in the range that would allow for tuning the output frequency. However, the POT is clearly designed to be adjusted AFTER everything is assembled because it is intended to be adjusted through the hole in the case. That assumes some sort of feedback. What feedback? What can it affect on the available five pins that would let you know when the temperature is set correctly? If it is not for setting the temperature, and not for setting the frequency, what is it for? Perhaps output voltage level? I would have to get it working again, but I could test that. Any ideas? Mike _______________________________________________ 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.
