Products > Test Equipment
HP 5335A Timer / Counter - Anything i should know?
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Dr. Frank:

--- Quote from: tkamiya on February 17, 2019, 10:47:45 pm ---Dr. Frank?  That's not what I am asking....  I was asking about the jumper to remove.  I posted a photo around that area with what I believe to be a fairly clear description.  You'll see that part is slightly different.

Can you help me with that?

You said W1 is CLEARLY visible.  I think so too.  When I asked for confirmation, you told me to be careful and refereed me to a manual.  That's when I got concerned.

--- End quote ---

Instead of a description, you better would mark the part in question in your picture, then I could safely say "yes".
I simply found your description dangerous to answer, especially such a term like 'cream colored "thing" ' .

I hope, you can now identify W1 on your own, safely.

And the OCXO should simply resemble the pictures of any 10811-60xxx on the net..
tkamiya:
Done.

I removed what I thought to be a W1.  While there is no indication on the module, some online resources refer to my unit as the right one.  So I installed it.  Power on!  It seem to be working.  Dr. Frank, thanks for putting up with me. 

Is there any indication on front panel to oven is cold? 

Now, the only thing left to do is to replace this noisy fan.
Dr. Frank:
Was a bit laborious, with both of us, but I'm happy that everything works, in the end.  ;D

In the 5335A manuals, there is no mention of such an indicator, and I don't remember that it has one.
Sorry, can't test that, as my OCXO is still running.

PS: pin 11 of the 10811 is the oven monitor, but is N.C. inside the 5335A. Therefore, definitely no indication possible.

It should run 48h before making any calibration.

And a picture of the faceplate would be nice, for my collection.


THX - Frank
tkamiya:
I'll have to replace a fan before closing the case.  Then, I'll take the vanity shots.  Thanks for your help.
tkamiya:
I have a HP5335A just upgraded with HP10811 oven oscillator.  I have GPSDO going to a scope channel 1 and HP5335A clock output going into channel 2.  Trigger is set on 1.  20 ns / div.

What's reasonable expectations?  So far, I have not been able to completely stop the trace movement.  The "slug" is extremely touchy and has some hysteresis.  (move slug, remove tuning stick, it goes back a little)

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