I recently acquired an older HP 53132A frequency counter offeBay. It did not
come equipped with an option oscillator. The standaloneperformance of the
existing oscillator is extraordinarily poor although thecounter works well
running off my house standard. I decided to update theversion 3703 memory to
version 4613 which I have installed on my newer Agilent 53132A.The serial
number prefix for the eBay counter is 3736A so I assumed that theupgrade would
work based on the HP assembly – level service guide that I have. When I
installed a freshlyprogrammed set of 4 ROM’s the counter would not power up.
The fan ran butnothing else. When I re-installed the 3703 chips everything
returned to normal.Is there a hardware difference between the older and the
newer HP/Agilent boards or am I missing something else?
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