As you say, another revision. Searching on 05061-6199 refers back to
this list. The 6199 board was apparently another one that showed up in
the 5061B. As you guessed, it has the same functionality as the 6165 board.
Ed
Arthur Dent wrote:
Ed Palmer wrote:
"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."
++++++++++++++++++++
I don't have a newer HP 105 to compare and only have the schematic
for the newer oscillator assembly that shows that it used the 10811
oscillator and a couple of circuit boards. It seems HP loved to make
revisions.
Here is another board similar to the one you just attached a link to.
This one has the same connections as the one you have to connect to
the older oscillator (this one was modified and in a piece of non-HP
equipment)and although it appears at a glance to be functionally
identical to your board, has a far different layout. The HP number
on this board is 05061-6199
http://farm5.static.flickr.com/4126/5095072396_83f549bd25_b.jpg
-Arthur
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