Paul and Joe, I took an interest in this the last time I saw it on the list. I was able to use an NI GPIB-232CV-A with my computer's hyper terminal to communicate with a couple of meters. It has prompted me to undertake an effort to learn to program in VB 2010. I figure in about a year or two, I'll be able to do some rudimentary things.
I have a friend who is helping me with the effort. He has written some programs to work with a 3458A and the ProLogix USB/GPIB adapter. I plan to dissect the programs and modify them to suit my needs. Hopefully, it will be a learning experience. Joe. -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Joseph Gray Sent: Monday, March 19, 2012 6:33 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] IOTECH 488 EPROM Paul, Thanks for that info. I'll keep an eye out for those models (cheap). I guess my NI unit is too different to use that EPROM. Joe Gray W5JG On Mon, Mar 19, 2012 at 12:42 PM, paul swed <paulsw...@gmail.com> wrote: > Hello to the group > Joe here are the exact model numbers that I have and do indeed work. > IOmega488a > IOtech Micro 488a > IOtech 488ex > IOtech serial 488a > Black Box 232 to 488a > If I would run across other units at $5 as I have in the past I would > indeed try the mod. > I think the key to the discussion is the MPU board needs to actually have a > eprom socket. > Regards > Paul. > > On Sun, Mar 18, 2012 at 1:56 PM, paul swed <paulsw...@gmail.com> wrote: > >> Joe >> Its been a while since I posted those eproms and info. >> I need to do 2 things. Look specifically at my models tested and listed >> and see what that means in the context of your question. Perhaps later >> today. >> Regards >> Paul. >> WB8TSL >> >> >> On Sun, Mar 18, 2012 at 11:38 AM, J. L. Trantham <jlt...@att.net> wrote: >> >>> Paul, >>> >>> Have you tried this in an NI GPIB-232CV-A or a GPIB-232CT-A? I have tried >>> to swap the data between a 232CT-A and a 232CV-A with no joy. The two >>> units >>> are fundamentally different. >>> >>> That's why I have the chips. >>> >>> Joe >>> >>> -----Original Message----- >>> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On >>> Behalf Of paul swed >>> Sent: Sunday, March 18, 2012 9:38 AM >>> To: Discussion of precise time and frequency measurement >>> Subject: Re: [time-nuts] IOTECH 488 EPROM >>> >>> >>> Hello to the group. >>> Indeed the prom changes the behavior to a full controller and the ones I >>> listed were changed and worked. Because those were the units I had found >>> over the years. No idea about this particular prom and such. Regards Paul >>> WB8TSL >>> >>> On Sun, Mar 18, 2012 at 10:12 AM, J. L. Trantham <jlt...@att.net> wrote: >>> >>> > Joe, >>> > >>> > The NI GPIB-232CV-A uses an ST M27C256B-15C1 One Time PROM in a PLCC >>> > 32 pin package. However, a Winbond W27E257 EEPROM is a pin for pin >>> > substitute. The M27C256B and the W27E257 both come in a 28 pin DIP >>> > package (0.6 >>> > spacing) >>> > so you should be able to use a programmer with that chip support and a >>> DIP >>> > to PLCC adapter, wired appropriately, to do the programming. The 28 pin >>> > DIP >>> > packages are UV erasable. I've never seen a PLCC UV erasable package. >>> Do >>> > they exist? >>> > >>> > In any event, I can program the chip for you if needed. I have some >>> > spare W27E257P-10 chips and can burn one for you as well and send it >>> > to you if needed. I am in Northwest Florida. >>> > >>> > Joe >>> > >>> > >>> > -----Original Message----- >>> > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] >>> > On Behalf Of Joseph Gray >>> > Sent: Sunday, March 18, 2012 2:18 AM >>> > To: Discussion of precise time and frequency measurement >>> > Subject: [time-nuts] IOTECH 488 EPROM >>> > >>> > The text file accompanying the EPROM file on KO4BB's site mentions >>> > using this EPROM image with a NI controller. I have a NI GPIB-232CV-A. >>> > Can I use the image with this controller? If so, I assume that I then >>> > have the equivalent of an IOTECH controller? >>> > >>> > I partially disassembled my GPIB-232CV-A and from peering between the >>> > boards, it looks like the EPROM is a PLCC. I can't burn one of those. >>> > If I can use this image with my controller, can someone burn a chip >>> > for me? I'll pay for the chip and shipping, of course. >>> > >>> > Joe Gray >>> > W5JG >>> > >>> > _______________________________________________ >>> > time-nuts mailing list -- time-nuts@febo.com >>> > To unsubscribe, go to >>> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> > and follow the instructions there. >>> > >>> > >>> > _______________________________________________ >>> > time-nuts mailing list -- time-nuts@febo.com >>> > To unsubscribe, go to >>> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> > and follow the instructions there. >>> > >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >>> >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> >> >> > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.