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 <[email protected]> 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 -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
