Hi Randy, Look TL866 USB Programmer.
Roumen On Wed, Nov 8, 2017 at 5:23 AM, Todd Micallef <tmical...@gmail.com> wrote: > Randy, > > I use the GQ-4X from mcumall.com. It works great and I have had no > problems > with it. I have bought a few adapters to support PLCC and SOIC packages. > > For the NVRAM, don't overlook the STMicroelectronics memory. I have used > the M48Z12 as a direct replacement.with no issues. The only thing I didn't > like was the date code format on the part. They only list the last digit of > the year and week. I guess if you replace it every 10 years it is not an > issue. > > Todd. > > On Tue, Nov 7, 2017 at 10:08 PM, Randy Evans <randyevans2...@gmail.com> > wrote: > > > Can someone recommend a good low-cost method to program the DS1220 and > > DS1230 NVRAMs for the HP-3458A? I downloaded the CAL contents and I need > > to program new NVRAM chips to replace the older (very old) NVRAMs still > in > > the unit. > > > > Also, will the DS1220AD and DS1230AD chips work in place of the > > existing DS1220Y > > and DS1230Y NVRAMs in the HP-3458A? The AD versions have different > timing > > "power good" specifications and they don't work as a plug-in substitute > in > > all cases. I assume some 3458A users have changed out the NVRAMs with > the > > new Dallas parts ( Dallas no longer makes the DS1230Y NVRAM, but does > still > > make the DS1230Y NVRAM, according to their data sheet). > > > > Thanks, > > > > Randy Evans > > _______________________________________________ > > volt-nuts mailing list -- volt-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > mailman/listinfo/volt-nuts > > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.