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
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