[time-nuts] 3.0GHz Channel 3 installation in Agilent 53132A Counter

Brooke Clarke brooke at pacific.net
Wed Mar 19 22:23:18 UTC 2014


Hi Jim:

I've seen a similar problem when one end of a ribbon cable connector is soldered to the wrong side of a PCB.
Maybe you can unsolder a connector and install it on the other side?

Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html

James Robbins wrote:
> I think I may need to clarify my prior posting.
>
> Both old and new Channel 3 boards work fine (and read correctly) in my older 53132A counter.
>
> Both old and new Channel 3 boards fail to work properly in (and read 4x actual) the newer 53132A counter.
>
> So I think the problem is in the newer main 53132A box.
>
> As far as my understanding of the division ratios, I understand my error now.  Thank you Dave (and some others).
>
> I have done some further testing and discovered one of HP/Agilent's little tricks.  The main counter board channel 3 ribbon cable socket pin numbering does not conform to the channel 3 board ribbon cable socket numbering (they are crisscrossed).  (I can supply the shifted numbers if anyone is interested.)
>
> However, my search for suspected unwanted zero ohm resistors left in the new box (to set the counter up for a 5 or 12.5GHz channel 3) has resulted in no joy and only a large headache and sore eyes:(
>
> Thanks everyone for trying to help here.  It was supposed to be a "plug and play" addition to my counter.  So much for the plan.
>
> Jim Robbins
> N1JR
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