Re: [time-nuts] Vectron 217-9043 10MHz OCXO

2011-11-26 Thread Ziggy 
Hijacking my own thread back here :)
Thanks for tip - I did know about Skycraft, and I think there was another in 
the Orlando area, but I wasn't able to make the trip over that way before I had 
to leave town.

Back on topic though, if anyone has an old catalog, or some other source of 
info on the old Vectron OCXO such as I mentioned, it would be most helpful. I'm 
not even sure if I'm running it at the right voltage.

Thanks!



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[time-nuts] Vectron 217-9043 10MHz OCXO

2011-11-25 Thread Ziggy 
While in Florida on business last week, fairly close to Cape Canaveral, I 
stopped in at the only surplus house I could find: AstroToo in Melbourne. 
Poking around there, I found several Vectron 217-9043 10MHz OCXO. I could not 
readily find any info on this model/series at the time of purchase, but bought 
one anyway. Cheap entertainment no matter what the outcome :) Thing is, I still 
cant find any directly relevant info. Digging through the time-nuts archives, I 
found info on other Vectron OCXO that have a similar 7 pin connector on the 
bottom, but this unit has no SMA connector - only the 7 pins. The standard for 
these seems to be:

1 - Output
2 - Case
3 - Power -/Case
4 - Power +
5 - EFC Supply (if present)
6 - EFC Input
7 - EFC -/Case

That seems to pretty much match this model, and I've noted that at 12V, there 
is distortion in the output, but at 15 V it looks clean. It's not quite a sine 
wave, but it looks reasonable as does the output level. The current starts out 
around 400ma and drops to 70-80ma once warmed up. So I don't think the supply 
voltage is too far off.

The thing is, pin 5 instead of being not connected, ground or some EFC supply 
voltage, also has 10MHz on it at about twice the output level as pin 1, but 
seems quite sensitive to load. Pins 6 and 7 are apparently not connected. The 
pin 5 signal doesnt match any 7 pin Vectron OCXO pinouts that I can find, so 
I'm not sure what the story is on this unit.

I'm currently running it on the bench, letting it settle in. Would have been 
nice if it had EFC but that doesn't seem to be the case. If anyone has any info 
on this series OCXO, I would much appreciate seeing it. Thanks!

Paul - K9MR
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