Rick,
Can you point us to a method and schematic of a better way to make such a front
end for a counter?
Peter
On 11/9/2013 6:26 AM, gandal...@aol.com wrote:
Hi Rick
Thanks for the clarification.
I'd thought at first you were suggesting these replacements were somehow at
fault in comparison with the original design, which was the bit I couldn't
understand since they seemed to be virtually identical, rather than
commenting on the original design itself.
I'd quoted the sensitivity mainly because that seemed to be just about the
only thing left to measure other than to say, "I plugged it in and it
worked ok":-), but undertand the limitations better now
I still feel comfortable recommending these as a great value substitute
for the HP original.
Regards
Nigel
GM8PZR
-------------------------------------
Dynamic dividers oscillate when not driven. Static dividers are like
ordinary flip flops used for logic and do not oscillate when the clock
signal is removed.
The MB510 is probably nothing great, even if it was used by HP
in some counters. I personally was to blame for designing the MB506
into the 5334B counter. I was trying to reduce factory cost.
I knew perfectly well it didn't work all that well. It was at
least no worse that the divider used in the 5334A, which was
made by HP in Santa Clara and cost $100.
The dividers that were made by HP in Santa Rosa were much better
because they were static. The 5386 used these. They were also
not cheap.
Rick Karlquist N6RK
HP 5334B Project Manager
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