Try the EIP_Microwave Group on YahooGroups. -John
================ > 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 > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
