Hi Bruce, Many thanks for your help with this. It looks like some types of these use 15V and others 24V. I received a PM from Bob Raker with the following:
Both are 7 dBm output & 1 ppb/day aging 225-7639: +24V supply - EFC: .3 ppm min for 0-6V, +/- 1 ppb for 15 to 35C 217-8364: +15V supply - NO EFC, +/- 30 ppb for -20 to 70C. In case anyone else was interested in this information. Thanks, Steve 2009/3/3 <[email protected]>: > > Steve, > In my experience Vectron has not been able/willing to provide info on > earlier oscillators. I acquired a 229-7730-9, 100 MHz unit and with an > ohmmeter > decided the pin connections seemed to match the diagram shown for the current > CO-706 series. The question then was whether the supply voltage should be > 12, > 15 or 24 volts. The unit oscillated with 15v, but plotting the warm-up > drift, I found that even after hours of operation the unit did not completely > warm-up. The can was barely warm to the touch. I then tried 24v and the > oscillator warmed-up in 16 minutes from a cold start -- that is the direction > of > frequency drift reversed in 16 minutes. The can was much warmer and reached > that temperature much faster. Applying a 0 to +6 v control voltage to pin > 6, I > was able to shift the frequency about +/- 50 Hz. The mechanical tuning > adjustment, at the top of the housing, allowed shifting the frequency over a > much > wider range. Initial current at 24v was 200 ma. This decreased to 105 ma > after about 30 mins. Output power at 24v was +7.6 dBm. At 15v input, > output > power was a steep function of input voltage. > Bruce Hunter > **************Worried about job security? Check out the 5 safest jobs in a > recession. > (http://jobs.aol.com/gallery/growing-job-industries?ncid=emlcntuscare00000002) > _______________________________________________ > 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. > -- Steve Rooke - ZL3TUV & G8KVD & JAKDTTNW Omnium finis imminet _______________________________________________ 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.
