Hello Randy, I have replaced the CAL-nvRAM by a DS1220AD-150 in 2013, as the Y version was not available. The speed was not the problem, but a slightly different supply volatge range, if I remeber correctly. My 3458A works w/o any problem, as does the instruments of 'quarks', who got the 2nd nvRAM which I have ordered. Frank

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 DS1230AD NVRAMS also? Thanks, Randy On Sat, Nov 11, 2017 at 6:31 AM, Dr. Frank <frank.stellmach@freenet.de> wrote: > Hello Randy, > > I have replaced the CAL-nvRAM by a DS1220AD-150 in 2013, as the Y version > was not available. > > The speed was not the problem, but a slightly different supply volatge > range, if I remeber correctly. > > My 3458A works w/o any problem, as does the instruments of 'quarks', who > got the 2nd nvRAM which I have ordered. > > Frank > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/listinfo/volt-nuts > and follow the instructions there. >

-------- In message <CANwu9JYuJmrctLNnyuXxxfsE=x1kj1=7rnKFZ2Ez3qgBnuYkyA@mail.gmail.com> , Randy Evans writes: >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 DS1230AD >NVRAMS also? The second set of NVRAMs are not nearly as important as the CALRAM, they merely store the "user-ram" you can access via GPIB. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.