On Tue, Feb 16, 2016 at 07:58:21PM -0500, time...@metachaos.net wrote: > I just received a 5Mhz OCXO from eBay (MTI 260-0624-D OCXO). After testing it, > it is clear that it is defective. > > 1. It never heats up. > 2. The reference voltage is zero. > 3. Only noise is seen on the output pin.
I had the same issue with some of them. It's very likely that the internal solder connections from pins to PCB are broken, at least, the one for power. It happens because the inner oven is heavy and there isn't any thermal insulator (besides air) to keep it from moving. Wheter the crystal has been damaged or not, it's unknown. I had one where the crystal actually fell off from its supports too. I posted a link to photos of the internals, time ago. The link is dead now and I don't think to have the photos anymore but perhaps someone downloaded them. Best regards, Andrea Baldoni _______________________________________________ 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.
