[time-nuts] HP5065A revival

Magnus Danielson magnus at rubidium.dyndns.org
Sun Sep 18 17:00:21 UTC 2011


Hi again,

On 18/09/11 15:26, Magnus Danielson wrote:
> Dear fellow time-nuts,
>
> I get something like ADEV(1s)= 5E-11 when comparing it against my 10 MHz
> using the TS-105A in double-mixer setup. The TS-105A isn't the ultimate
> tool by any sense of the word, but it is nice to be able to use it as
> part of an early diagnosis since it is very "direct".
>
> The other HP5065A is a bit more of a challenge, so I will have to work
> more on the PSU side of it first.
>
> Anyway, I would apprechiate some experience with fault diagnostic and
> trim-up on HP5065A so I can get these back into spec. It always takes a
> bit longer when new to them. All the signal checks look healthy now, so
> it is only this minor issue.

Sigh. Reading the pinning incorrect numerous times prohibited me from 
observing the obvious... that the Continous Operation lamp is out... :P

Thus I've been spending quite some time in vane... ah well. I know this 
beast better now.

Managed to tune the multiplier up.

So, lids on and just a stable measurement before lifting it off the 
table and see what other rubidium I will play with for the rest of the 
evening.

Will need to hook up an ADEV rig again.

Cheers,
Magnus




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