[time-nuts] 3GHZ Extender for HP 53131A and 53132A

[Peter Gottlieb]

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, GandalfG8 at 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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