Hi Ulf,
in the 10811 version HP mount the 10811-60109, a 10MHZ oscillator with a TTL
divider by two to obtain 5MHz as the original circuit require.
The chassis and front panel are the same in the 00105 and 10811 version.
please see the picture below:
http://www.timeok.it/wp-content/uploads/2015/08/DSCN5153.jpg
The coarse tuning are in the same position with the help of a special mount.
The overall HP5065A specification of the two versions are similar.
The 10811 version add the possibility to have a 10M inside the instrument.
If you use a buffer you can add a 10M output.
ciao,
luciano
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Data Sun, 14 May 2017 16:43:30 +0000 (UTC)
Oggetto [time-nuts] Regarding the 00105-60xx (Bringing a 5065A back to life)
What I wanted to know was the differences (specs) betweensome of the 00105
oscillator modules in order tomount the best one in the 5065A which I am trying
tobring back to life.
I have a bunch of 10811assy:s and thereare differences in drift, phase
noise, etc. Thecoarse frequency adjustment hole does not havethe same
coordinates as the 00105 so I will not fitany of these.
Fortunately I have an excellent printed copyof the 5065A manual with all
schematics and so on.The manual is printed 1971.
(I found some newer manuals where HP appearentlyhad made some modernisation
of modules, replacingregenerative dividers with TTL versions, changedOP-amps
into modern versions and so on, but the one at Keysight.com is not readable.)
Otherwise, replacing obsolete components withmodern available ones would be
another thing to do.
Digging into the junk bin I found HP original 5065 extender boardsso that I
will be able to check the PCB's once the workstarts.
Ulf - SM6GXV
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