[time-nuts] Re: Should a double oven XO be thermally isolated or just draft protected?

[Hal Murray]

Dr. David Kirkby said:
> I removed an HP 10811A OCXO from a 5370B time interval counter the other day
> and put it into a HP 5352B 40 GHz frequency counter. One thing that really
> struck me is that in the 5370B there was a shroud around the OCXO, which is
> around 5 mm away from the sides of the OCXO. It's made of aluminium. But
> there's nothing like that in the frequency counter.

I think the 5370B has a fan so a shroud to keep the air currents away from the 
OCXO seems like a good idea.

Is there a fan in the 5352B?

-- 
These are my opinions.  I hate spam.