Products > Test Equipment
HP 5386A frequency counter teardown
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remageFrs:
Hi!

First post here, so I thought it'd be a good idea to take some inside photos of an HP 5386A frequency counter I scored recently on eBay.
Also, I'm curious if anyone here has a similar counter with the "Option 004" OCXO timebase?

Higher resolution images are here: HP 5386A

Most of the ICs/caps have a late-'87 datecode, the TCXO has '8802' stamped on its side (but I'm not 100% sure that's a datecode), so I think it's an early '88 unit. Despite the age, the whole instrument looks really nice and clean.

I didn't have the confidence to open up the RF shield on the 3 GHz frontend, sorry... :)


Edit: Found the service manual on Keysight's homepage.
It mentions on page 2-4 that the standard oscillator can be replaced by the "Option 004"  OCXO. The HP number is 0960-0636, I couldn't find any further info about it. Does anyone have an idea if a modern ovenized oscillator can be installed there?
deepskyridge:
I have one just like it except mine has the OPT-004 installed. Nice counter, mine works fine.

Gary
picburner:
Nice instruments.
A guy in Poland has made an option 004 clone and sell it on ebay.
remageFrs:
Found a NOS oven oscillator for the counter!
corn11:

--- Quote from: remageFrs on March 28, 2016, 07:32:35 pm ---Found a NOS oven oscillator for the counter!

--- End quote ---

I have a 5385a on which I also want to install the option.
May I ask where you've managed to get the original OCXO ?
I've wrote some obsolete part suppliers but none of them has responded so far  :-\

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