[time-nuts] Fleamarket find
Ed Palmer
ed_palmer at sasktel.net
Mon Oct 18 21:32:12 UTC 2010
Arthur Dent wrote:
> Ed Palmer wrote:
> "I have an HP105B e/w a 10811-60109 oscillator. It has the same physical
> configuration as all other plug-in 10811s. It's plugged into the 00105-6044
> board that you mentioned. This combination was also apparently used in the
> 5061B Cs standard. You can see it in the pictures in the manual. I also have
> a couple of the older 00105 oscillators. Totally different physical
> configuration compared to the 10811 / 6044 combination, but the two are
> plug-compatible."
>
> Here is a photo of a 10811 (with a 5061 p/n) and the HP 105 oscillator
> that I just bought. They are not plug compatible.
> http://farm5.static.flickr.com/4153/5094715304_90206b98fd_b.jpg
>
> -Arthur
My mistake. I should have said that the older 105 oscillator is
plug-compatible with the combination of the 10811 and two add-on
boards. The first is the 00105-6044 board that you mentioned. It
includes voltage regulation and oven monitor circuitry. Both the 10811
and the second board plug into the 6044 board. The second board is
05061-6165. It includes frequency divider, amplifier, and level adjust
circuitry to make it plug-compatible with the older oscillator. Here's
a picture of that board. Notice the 4 SMB connectors and the four
single lead connectors - just like the older oscillator. The 110 VAC
heater on the old oscillator isn't needed with the 10811 so they didn't
duplicate that.
Ed
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