[volt-nuts] HP-3458A NVRAM

Randy, 'quarks' is another volt-nuts companion. His instrument is from 1989, and we both changed all nvSRAMs in our 3458As. The complete designations are: DS1220AD-150+ and DS1230Y-150+. If the 1230 battery fails, you will get failure messages on booting the 3458A, and your stored settings

Re: [volt-nuts] HP-3458A NVRAM

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Re: [volt-nuts] HP-3458A NVRAM

Frank, Thanks for the information. I was hoping to hear from someone that had actually successfully used the DS1220AD in the 3458A. I did not understand the comment about the "instrument of 'quarks'", but it may be in regards to the second set of DS1230Y NVRAMs? Did you change those out to

Re: [volt-nuts] HP-3458A NVRAM

Actually, it could make a difference depending on when the processor tries to access the memory on start up. The Maxim app note mentions that many legacy programs designed for the DS1220Y may not work with the DS122AD, hence the reason for the question. I really would like to hear from someone

Re: [volt-nuts] HP-3458A NVRAM

In message , Randy Evans writes: >Does anyone know if the DS1220AD will work as a direct replacement for >the DS1220Y >NVRAM chip currently installed in the HP-3458A? There is a timing >difference between the two

[volt-nuts] HP-3458A NVRAM

Does anyone know if the DS1220AD will work as a direct replacement for the DS1220Y NVRAM chip currently installed in the HP-3458A? There is a timing difference between the two devices, as explained in Maxim AN 202. "the "Y" parts had a reset timeout on the order of milliseconds while the "AD"