Hi Best guess would be a system that needed to be 8 Hz off of 775 MHz after multiplication ....
Bob On Dec 4, 2009, at 6:47 PM, Joseph Gray wrote: > Thanks for the answer. Any idea what these things were used in? I > can't seem to find any information on the net. > > Joe Gray > KA5ZEC > > > On Fri, Dec 4, 2009 at 5:27 AM, Bob Camp <[email protected]> wrote: >> Hi >> >> Simple answer - yes. >> >> More details: >> >> The oven and oscillator supplies are split so you can regulate them >> independently. Since there is very little current change (and very little >> current) on the oscillator line you can regulate it pretty tightly. >> >> The oven monitor reports the current being pulled by the oven heater. >> There's no need to terminate it. The two likely options are either a TTL >> signal indicating it's gotten to a "warm" condition or a linear voltage >> tracking the current. Watch it with a DVM when you put power on the oven >> supply. >> >> Bob >> >> >> On Dec 4, 2009, at 12:10 AM, Joseph Gray wrote: >> >>> I came across a rather large OCXO from Frequency Electronics. The >>> model number is: FE-30-OPC-2F. The frequency is: 10.763889MC. The >>> pinout for the octal plug on the base is also labeled as follows: >>> >>> 1: +28VDC >>> 2: Oven Monitor >>> 3: Oven Ret. >>> 4: Spare >>> 5: Spare >>> 6: Osc. Ret. >>> 7: +28VDC Osc. >>> 8: Spare >>> >>> I have a few questions. Can pins 1 and 7 be tied together to the same >>> 28VDC supply? If so, then I assume pins 3 and 6 can also be tied >>> together? I assume that pin 2 is simply some output voltage, >>> proportional to the oven temperature? Is it safe to just apply power >>> and let it run without using pin 2? >>> >>> Once I know how to power this thing without blowing it up, I'll hook >>> it up to a scope and take a look at both pin 2 and the oscillator >>> output on the BNC. >>> >>> In case anyone is interested, here are the dimensions, not counting >>> the octal plug and BNC: 5" high x 3" x 3". There is a "Frequency >>> Adjustment" screw on the top. >>> >>> I did a Google search, but didn't turn up any information on this >>> unit. I was rather surprised, considering the name Frequency >>> Electronics. Does anyone know the history of these things? >>> >>> One last question. The can is soldered at the base. Is is possible to >>> unsolder it and replace the crystal without destroying things? >>> >>> Joe Gray >>> KA5ZEC >>> >>> _______________________________________________ >>> 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. >> >> > > _______________________________________________ > 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.
