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15May/120

HP 5328a Frequency Counter Fix.

I purchased a HP 5328a counter off ebay for a decent price.  It arrived a few days later and I'd say cosmetically its a 9.9/10.  After putting it on the bench and turning on the unit I released it didn't have the oven based oscillator.  It did have channel C option and GPIB interface.  After checking channel A I was really glad to see that things were working correctly.  I moved over to test channel C.  All was well I thought until I noticed that the connector on channel C seems to work intermittanly.  After pulling the cover off I was pleased to see the unit was very clean inside.  I removed the channel C card by taking a single screw out from the rear to remove the top cover.  Removing the BNC was just a simple process of removing the nut.  After taking the connector apart it was tarnished quite a bit.  Some cleaning and I did apply a bit of pressure.  After assembly the C channel was working perfectly.

 

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