[time-nuts] HP5065A revival
paulswedb at gmail.com
Sun Sep 18 21:38:54 UTC 2011
A couple of comments.
Yes those lights are pesky. I use leds now. The solder on the back of the
pin in the lamp seems to go flat. reheating with an iron seems to fix it.
LEDs fix it better.
On the 5065 the green light does not come on until you reset the logic. It
was designed that way so that you would know you lost lock or had a power
My trusty 5065 just developed a problem so I get to troubleshoot it again
after 7 years.
Boy I have to say this 40 year old technology is very unreliable. ;-)
On Sun, Sep 18, 2011 at 1:00 PM, Magnus Danielson <
magnus at rubidium.dyndns.org> wrote:
> 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.
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