[time-nuts] Question about Firmware for EIP Counters

[Bruce Lane]

	If you do happen to run across the image files for the EPROMs in
question, I would appreciate a copy of them for my FTP archive, so they
may be of help to others.

	Thanks.


*********** REPLY SEPARATOR  ***********

On 12-Jan-10 at 12:54 brucekareen at aol.com wrote:

>Is anyone on the list familiar with the firmware for EIP 578 or 548
>series  
>counters?  I have a favorite 578 counter, with power measuring  option, 
>that I have owned for years.  All of this time I have wished it had  the

>Frequency Extension option.  Recently I bought a mechanically-damaged
578
>with 
>the desired extended frequency range feature on eBay.  I removed  the
>optional 
>RF parts and added them to my old counter.  I also  transferred the 
>associated firmware PROM (U20) to my counter's A-105  microprocessor
>board, and 
>added the jumper required to activate the feature on a  second board.
But
>the 
>option failed to work.  By pressing buttons I  determined the cause was
a 
>firmware rather than RF problem.   
> 
>While my old firmware set of 5 PROMS was Version-B, the "parts"  counter

>had Version-D PROMS, even though it was not far removed in  serial
number
>and 
>bore the same CCN code.  So I transferred the remaining  Version-D PROMS
>to 
>my counter and presto! the frequency extension option worked  great!  
>However, before I could celebrate by closing the case, I realize  the
>prized power 
>measurement feature no longer worked.  I tried  interchanging the first 
>then last PROMs in the programming sequence, but this  just caused the 
>microprocessor to lock-up.  I am left with the feeling  that the various
>firmware 
>versions might correspond to the eight  permutations of the three
options 
>requiring microprocessor intervention (A to  D Converter, Power Meter, &

>Frequency Extension).  If this is the  case, my augmentation project
seems
>doomed 
>unless I can obtain a copy of  the appropriate firmware.  Has any list
>member 
>had experience adding  options to the EIP counters of this family?   I
>have 
>already  asked this question on the Microwave Reflector, but with no 
>responses.
> 
>Bruce Hunter, KG6OJI
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Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies (http://www.bluefeathertech.com)
Assoc. member, AZA & AAZK for many moons.
"Salvadore Dali's computer has surreal ports..."