Magnus, In this case, the rattle is not of light weight pieces, but of a heavy object. So, I am guessing that the outer oven broke off somehow. Won't really know until and unless I open it up. The vendor probably won't want it back, but they might, so I won't touch it until I hear from them.
Mike > Hi, > On 03/05/2016 10:45 PM, time...@metachaos.net wrote: >> I got the replacement MTI 260-0624-D OCXO today. >> >> It rattles! > I've seen that on one oscillator. I did a RMA and complained about the > maracas mode, which I had demonstrated to the rep. When it arrived they > wondered what that mean and the rep just smiled and ask them to pick it > up... and it rattle. Turns out that the way they soldered their ovens, > drops of solder could form and get loose, so they changed the process. > Unfortunatly, it is also the failure mode of rough shipping/handling for > some oscillators. > Cheers, > Magnus >> I didn't even bother trying to power it up. Not much point. I have not taken >> it apart, but have notified the seller. I may disassemble this one as well, >> depending on what the seller says. >> >> Mike >> >> >>> 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 tested with a 12.54V, 2A supply voltage with around 30mV noise. That >>> should >>> be sufficient to test. >> >>> All I was looking for was a 5Mhz signal whose frequency changed when the >>> adjustment pin was either tied to ground or the reference voltage. Never got >>> that far because I never go a signal at all. >> >>> The seller packed it well and shipped it promptly. I will see how he handles >>> it. >> >> >>> 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. >> >> >> > _______________________________________________ > 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. -- Best regards, Timenut mailto:time...@metachaos.net _______________________________________________ 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.