Products > Test Equipment
Upgrading Counter 53220A to Option 010 Ultra High-stability OCXO Timebase?
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carl_lab:
Does anybody know, if you can buy the oscillator module as a spare part (P/N, cost?) and is it sufficient to swap the modules?
Or is additional configuration change requided?

plesa:
It require new motherboard.
You needs to replace 53220-66111 ($1808) with 53220-66112 ($1929).
So external reference ( like use rubidium will be much cheaper ).
Or open instrument and check what is missing.
carl_lab:

--- Quote from: plesa on November 17, 2016, 01:25:59 pm ---It require new motherboard.
You needs to replace 53220-66111 ($1808) with 53220-66112 ($1929).
--- End quote ---
Thanks for your reply.

That's not, what I expected. On old 53131A replacing the oscillator module did the job, nothing else required.

On 53220A mainboard a standard 4-pin-quartz-oscillator is implemented (DIL footprint).
But there is an additional empty footprint for a bigger oscillator module (19x19mm=3/4x3/4", 5 pins).
So changing the module is a possible way to go?

Any pictures of an Opt. 010 Ultra High-stability OCXO Timebase available?


--- Quote from: plesa on November 17, 2016, 01:25:59 pm ---So external reference ( like use rubidium will be much cheaper ).

--- End quote ---
Do you know a "cheap" rubidium standard with calibration certificate?

The counters will be installed in production ATE - not in the calibration lab, where an existing external frequency reference could be used.
plesa:
Try to contact Agilent, in manual they are no so strict and maybe they will populate the OCXO instead of board swap.
Manual says :  order 53200U-010.
If you needs certificate I cannot help you.

HighVoltage:
I have a 53220A without OCXO and the drift was horrible but an upgrade was expensive.
Actually, I got a 53230A with installed OCXO for less money than then upgrade of the 53220A.
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