[time-nuts] Fwd: 5065 ?? direct

Jim/Anna McIntyre bbimini at gmail.com
Tue Dec 8 21:20:11 EST 2015


My last step was to twiddle the two pots (R3 and R11) on the multiplier
back and forth a few times (setting them back to their original setting
afterwards).  2nd harmonic popped up and is steady.  I hit the Logic Reset,
and the green light is ON!  Error was pretty close to zero, I can get the
Integrator Limit light to come on if I rock the Oscillator Coarse control
enough in either direction, which all seems good, right?

My counter reads 5.000 000 022, which is probably about as accurate as the
counter is good for.

This instrument has a little blue HP sticker on the back that says option
H52.  What is that?

Thanks to all for your support and emails.

---------- Forwarded message ----------
From: Jim/Anna McIntyre <bbimini at gmail.com>
Date: Tue, Dec 8, 2015 at 4:23 PM
Subject: Fwd: 5065 ?? direct
To: Discussion of precise time and frequency measurement <time-nuts at febo.com


I have a 350 MHz scope, HP5335A, various power supplies, DVMs, and sig gens
up to 1 GHz.  No working Spec An on my bench now, but I have access to one
if needed...


---------- Forwarded message ----------
From: paul swed <paulswedb at gmail.com>
Date: Tue, Dec 8, 2015 at 1:35 PM
Subject: Re: 5065 ?? direct
To: Jim/Anna McIntyre <bbimini at gmail.com>

Jim what kind of test equipment do you have? Kind of helps to understand
what approaches could be used to figure it out.
Funny I have a HP5061 CS its a true Frankenstein in reality using a 5060
tube. Absolutely on its last fumes. I have had a funny offset forever in it
and finally figuring what the issue really seems to be.
Crazy stuff.

On Mon, Dec 7, 2015 at 12:15 PM, Jim/Anna McIntyre <bbimini at gmail.com>

> Good to know.  I wasn't aware of the 'sweep'.  I'll look for that tonight
> when I get home.
> Fingers crossed...
> Jim
> On Mon, Dec 7, 2015 at 12:02 PM, paul swed <paulswedb at gmail.com> wrote:
>> Great that you have a pdf.
>> My concern is that when you hit reset. The meter should swing all the way
>> left when in control V and drift all the way to the right.
>> Thats the sweep that its looking for the 2 nd harmonic and occurs onetime
>> on reset.
>> On Mon, Dec 7, 2015 at 11:54 AM, Jim/Anna McIntyre <bbimini at gmail.com>
>> wrote:
>>> Thanks for the note, Paul.  I found a PDF on 'First Aid' for the 5065.
>>> Looks like I'll leave it as-is for a few days and see if the 2nd harmonic
>>> level comes up.  Nothing so far.
>>> 73,
>>> Jim
>>> N9FWC
>>> On Mon, Dec 7, 2015 at 9:06 AM, paul swed <paulswedb at gmail.com> wrote:
>>>> Jim
>>>> You will find great support on Time-nuts with respect to the 5065.
>>>> There is the worst possible thing and that is the tube being bad.
>>>> Thats actually a rare occurrence. Generally something else is the issue
>>>> and actually only a few parts can't be replaced with something else newer
>>>> and a bit of fiddling.
>>>> May be easier to yak on skype.
>>>> My skype is wb8tsl
>>>> Regards
>>>> Paul
>>>> WB8TSL

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