Hi, I have removed my 32k memory chips form my 3458A. Doe anyone have an easy way to connect them to a windows computer. USB would be my preferred connection to a 28 and 24 pin socket. I would like to be able to read and write to the chips to validate the data. I have replace the chips and still get Mem test 1 High on start up. ​I really do not want to spend close to $3000 for KeySight to fix this.​ -- *John Phillips*

John, Which chips are these? Dallas NVRAM's? Do you have a part number? They can probably be read and programmed with the appropriate chip programmer. Joe -----Original Message----- From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On Behalf Of John Phillips Sent: Wednesday, August 20, 2014 3:54 PM To: Discussion of precise voltage measurement Subject: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K memory chips? Hi, I have removed my 32k memory chips form my 3458A. Doe anyone have an easy way to connect them to a windows computer. USB would be my preferred connection to a 28 and 24 pin socket. I would like to be able to read and write to the chips to validate the data. I have replace the chips and still get Mem test 1 High on start up. ​I really do not want to spend close to $3000 for KeySight to fix this.​ -- *John Phillips* _______________________________________________ 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.

Yes they are DEI220Y-150 and DSI230Y-150 On Aug 20, 2014 4:09 PM, "J. L. Trantham" <jltran@att.net> wrote: > John, > > Which chips are these? Dallas NVRAM's? > > Do you have a part number? They can probably be read and programmed with > the appropriate chip programmer. > > Joe > > > -----Original Message----- > From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On > Behalf Of John Phillips > Sent: Wednesday, August 20, 2014 3:54 PM > To: Discussion of precise voltage measurement > Subject: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K memory > chips? > > Hi, > I have removed my 32k memory chips form my 3458A. Doe anyone have an easy > way to connect them to a windows computer. USB would be my preferred > connection to a 28 and 24 pin socket. I would like to be able to read and > write to the chips to validate the data. > I have replace the chips and still get Mem test 1 High on start up. > ​I really do not want to spend close to $3000 for KeySight to fix this.​ > > -- > > *John Phillips* > _______________________________________________ > 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.

the easy way to read nvram through usb is a usb-programmer that has your ram in its list of supported devices:-) this will not solve your problem though. if you reboot the unit after the first error messsage, amd the problem still exists, it is probably not with the nvram. then it could be things like bus drive, chip select logic... ne way to avoid spending 3k is to bus the cpu board, this is cheaper. > Gesendet: Mittwoch, 20. August 2014 um 22:37 Uhr > Von: "John Phillips" <john.phillips0@gmail.com> > An: "Discussion of precise voltage measurement" <volt-nuts@febo.com> > Betreff: Re: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K memory chips? > > Yes they are DEI220Y-150 and DSI230Y-150 > On Aug 20, 2014 4:09 PM, "J. L. Trantham" <jltran@att.net> wrote: > > > John, > > > > Which chips are these? Dallas NVRAM's? > > > > Do you have a part number? They can probably be read and programmed with > > the appropriate chip programmer. > > > > Joe > > > > > > -----Original Message----- > > From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] On > > Behalf Of John Phillips > > Sent: Wednesday, August 20, 2014 3:54 PM > > To: Discussion of precise voltage measurement > > Subject: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K memory > > chips? > > > > Hi, > > I have removed my 32k memory chips form my 3458A. Doe anyone have an easy > > way to connect them to a windows computer. USB would be my preferred > > connection to a 28 and 24 pin socket. I would like to be able to read and > > write to the chips to validate the data. > > I have replace the chips and still get Mem test 1 High on start up. > > ​I really do not want to spend close to $3000 for KeySight to fix this.​ > > > > -- > > > > *John Phillips* > > _______________________________________________ > > 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.

John, Don't forget to measure your 5V power supply output. I doubt you are having a problem with it but the NVRAM write is disabled below a certain voltage (~4.25v) Todd On Wed, Aug 20, 2014 at 6:50 PM, <acbern@gmx.de> wrote: > the easy way to read nvram through usb is a usb-programmer that has your > ram in its list of supported devices:-) > > this will not solve your problem though. if you reboot the unit after the > first error messsage, amd the problem still exists, it is probably not with > the nvram. then it could be things like bus drive, chip select logic... > ne way to avoid spending 3k is to bus the cpu board, this is cheaper. > > > > > Gesendet: Mittwoch, 20. August 2014 um 22:37 Uhr > > Von: "John Phillips" <john.phillips0@gmail.com> > > An: "Discussion of precise voltage measurement" <volt-nuts@febo.com> > > Betreff: Re: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K > memory chips? > > > > Yes they are DEI220Y-150 and DSI230Y-150 > > On Aug 20, 2014 4:09 PM, "J. L. Trantham" <jltran@att.net> wrote: > > > > > John, > > > > > > Which chips are these? Dallas NVRAM's? > > > > > > Do you have a part number? They can probably be read and programmed > with > > > the appropriate chip programmer. > > > > > > Joe > > > > > > > > > -----Original Message----- > > > From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] > On > > > Behalf Of John Phillips > > > Sent: Wednesday, August 20, 2014 3:54 PM > > > To: Discussion of precise voltage measurement > > > Subject: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K > memory > > > chips? > > > > > > Hi, > > > I have removed my 32k memory chips form my 3458A. Doe anyone have an > easy > > > way to connect them to a windows computer. USB would be my preferred > > > connection to a 28 and 24 pin socket. I would like to be able to read > and > > > write to the chips to validate the data. > > > I have replace the chips and still get Mem test 1 High on start up. > > > ​I really do not want to spend close to $3000 for KeySight to fix > this.​ > > > > > > -- > > > > > > *John Phillips* > > > _______________________________________________ > > > 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. > _______________________________________________ > 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.

I have replaced the 3 NVRAM devices in two different 3458A meters.  I

Since I have a complete set of necessary calibration equipment that is

My point here is that putting new blank NVRAMS into the meter does not

So my guess is that you have a problem on your A5 Outguard Controller

Good luck.

John: I have replaced the 3 NVRAM devices in two different 3458A meters. I didn't do anything to the devices other than to install sockets to make future replacements easier when that issue comes up again. I did not program them or anything, just put the "blank" NVRAMS in and turned on the meters. I did get a lot of error messages at turn on because there were no "calibration constants" in the devices. But after clearing those messages the meter worked normally, but was way off on all readings which was expected. I was worried that the other "limit" constants that were in the old NVRAM would be reprogrammed into the new NVRAMS but it was all there just all of the "calibration constants" were "0" for the most part. Since I have a complete set of necessary calibration equipment that is required to completely recalibrate the 3458A I went through all of the calibration commands with the proper standards hooked up to the meter, CAL 0, CAL 10.0000000, CAL 10.000E3 and SCAL and whatever else was required. When I got done both meters would power on with no problems or complaints about "calibration needed" or whatever. My point here is that putting new blank NVRAMS into the meter does not cause a "Mem test 1 high" error. Of course you must calibrate the entire meter or send it to HP/Agilent/Keysight or a local lab if you don't have the necessary equipment to do the cal. So my guess is that you have a problem on your A5 Outguard Controller board with addressing memory that is NOT being caused by replacing the NVRAMS. Or you have a problem with one of the RAMs on that board or something. Unfortunately HP/Agilent/Keysight did not ever publish a full set of error messages and what they may mean and what to do about them. Good luck. Bill ----- Original Message ----- From: "John Phillips" <john.phillips0@gmail.com> To: "Discussion of precise voltage measurement" <volt-nuts@febo.com> Sent: Wednesday, August 20, 2014 1:53 PM Subject: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K memorychips? > Hi, > I have removed my 32k memory chips form my 3458A. Doe anyone have an easy > way to connect them to a windows computer. USB would be my preferred > connection to a 28 and 24 pin socket. I would like to be able to read and > write to the chips to validate the data. > I have replace the chips and still get Mem test 1 High on start up. > ​I really do not want to spend close to $3000 for KeySight to fix this. > > -- > > *John Phillips* > _______________________________________________ > 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.

Thanks... I have been looking at the http://www.ebay.com/itm/Universal-EEPROM-Flash-SPI-BIOS-24-25-BR90-93-USB-Programmer-6000-CHIPS-SP8-B-/371031966902?pt=LH_DefaultDomain_0&hash=item56633a84b6 Do you think that would do the chips? On Wed, Aug 20, 2014 at 4:25 PM, Todd Micallef <tmicallef@gmail.com> wrote: > John, > > Don't forget to measure your 5V power supply output. I doubt you are having > a problem with it but the NVRAM write is disabled below a certain voltage > (~4.25v) > > Todd > > > On Wed, Aug 20, 2014 at 6:50 PM, <acbern@gmx.de> wrote: > > > the easy way to read nvram through usb is a usb-programmer that has your > > ram in its list of supported devices:-) > > > > this will not solve your problem though. if you reboot the unit after the > > first error messsage, amd the problem still exists, it is probably not > with > > the nvram. then it could be things like bus drive, chip select logic... > > ne way to avoid spending 3k is to bus the cpu board, this is cheaper. > > > > > > > > > Gesendet: Mittwoch, 20. August 2014 um 22:37 Uhr > > > Von: "John Phillips" <john.phillips0@gmail.com> > > > An: "Discussion of precise voltage measurement" <volt-nuts@febo.com> > > > Betreff: Re: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K > > memory chips? > > > > > > Yes they are DEI220Y-150 and DSI230Y-150 > > > On Aug 20, 2014 4:09 PM, "J. L. Trantham" <jltran@att.net> wrote: > > > > > > > John, > > > > > > > > Which chips are these? Dallas NVRAM's? > > > > > > > > Do you have a part number? They can probably be read and programmed > > with > > > > the appropriate chip programmer. > > > > > > > > Joe > > > > > > > > > > > > -----Original Message----- > > > > From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com] > > On > > > > Behalf Of John Phillips > > > > Sent: Wednesday, August 20, 2014 3:54 PM > > > > To: Discussion of precise voltage measurement > > > > Subject: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K > > memory > > > > chips? > > > > > > > > Hi, > > > > I have removed my 32k memory chips form my 3458A. Doe anyone have an > > easy > > > > way to connect them to a windows computer. USB would be my preferred > > > > connection to a 28 and 24 pin socket. I would like to be able to > read > > and > > > > write to the chips to validate the data. > > > > I have replace the chips and still get Mem test 1 High on start up. > > > > ​I really do not want to spend close to $3000 for KeySight to fix > > this.​ > > > > > > > > -- > > > > > > > > *John Phillips* > > > > _______________________________________________ > > > > 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. > > _______________________________________________ > > 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. -- *John Phillips*

John, Look for the TL866A. You can get it with/without adapters. It seems to be a decent programmer. There was a review done on EEVBlog for a similar model without the ICSP port. The support list includes the 3458A NVRAM. http://www.eevblog.com/forum/blog/eevblog-411-minipro-tl866-universal-programmer-review/ I use this one ... http://www.mcumall.com/comersus/store/comersus_viewItem.asp?idProduct=4282 It works fine with the 3458A NVRAM, but you can probably save some $$ going with a less expensive model. Todd On Wed, Aug 20, 2014 at 7:43 PM, John Phillips <john.phillips0@gmail.com> wrote: > Thanks... > I have been looking at the > > http://www.ebay.com/itm/Universal-EEPROM-Flash-SPI-BIOS-24-25-BR90-93-USB-Programmer-6000-CHIPS-SP8-B-/371031966902?pt=LH_DefaultDomain_0&hash=item56633a84b6 > > Do you think that would do the chips? > > > On Wed, Aug 20, 2014 at 4:25 PM, Todd Micallef <tmicallef@gmail.com> > wrote: > > > John, > > > > Don't forget to measure your 5V power supply output. I doubt you are > having > > a problem with it but the NVRAM write is disabled below a certain voltage > > (~4.25v) > > > > Todd > > > > > > On Wed, Aug 20, 2014 at 6:50 PM, <acbern@gmx.de> wrote: > > > > > the easy way to read nvram through usb is a usb-programmer that has > your > > > ram in its list of supported devices:-) > > > > > > this will not solve your problem though. if you reboot the unit after > the > > > first error messsage, amd the problem still exists, it is probably not > > with > > > the nvram. then it could be things like bus drive, chip select logic... > > > ne way to avoid spending 3k is to bus the cpu board, this is cheaper. > > > > > > > > > > > > > Gesendet: Mittwoch, 20. August 2014 um 22:37 Uhr > > > > Von: "John Phillips" <john.phillips0@gmail.com> > > > > An: "Discussion of precise voltage measurement" <volt-nuts@febo.com> > > > > Betreff: Re: [volt-nuts] HP 3458A Mem test 1 hight. How do you read > 32K > > > memory chips? > > > > > > > > Yes they are DEI220Y-150 and DSI230Y-150 > > > > On Aug 20, 2014 4:09 PM, "J. L. Trantham" <jltran@att.net> wrote: > > > > > > > > > John, > > > > > > > > > > Which chips are these? Dallas NVRAM's? > > > > > > > > > > Do you have a part number? They can probably be read and > programmed > > > with > > > > > the appropriate chip programmer. > > > > > > > > > > Joe > > > > > > > > > > > > > > > -----Original Message----- > > > > > From: volt-nuts-bounces@febo.com [mailto: > volt-nuts-bounces@febo.com] > > > On > > > > > Behalf Of John Phillips > > > > > Sent: Wednesday, August 20, 2014 3:54 PM > > > > > To: Discussion of precise voltage measurement > > > > > Subject: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K > > > memory > > > > > chips? > > > > > > > > > > Hi, > > > > > I have removed my 32k memory chips form my 3458A. Doe anyone have > an > > > easy > > > > > way to connect them to a windows computer. USB would be my > preferred > > > > > connection to a 28 and 24 pin socket. I would like to be able to > > read > > > and > > > > > write to the chips to validate the data. > > > > > I have replace the chips and still get Mem test 1 High on start up. > > > > > ​I really do not want to spend close to $3000 for KeySight to fix > > > this.​ > > > > > > > > > > -- > > > > > > > > > > *John Phillips* > > > > > _______________________________________________ > > > > > 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. > > > _______________________________________________ > > > 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. > > > > > -- > > *John Phillips* > _______________________________________________ > 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.

That is very helpful Bill! Thanks so much... You are the first person who has told me of actually getting this to work. I have been changing out the chips one at a time. I still have the 16K chip to go. It could just be that one. I am waiting for a 24 pin socket which should be here Friday to change it out. I have been looking at the programer to see if I could get a before and after memory dump mostly to see what changed and to see if I use different chips if I get different values. 5V = 5.06 with 1.5mv ac Thanks again. On Wed, Aug 20, 2014 at 4:43 PM, John Phillips <john.phillips0@gmail.com> wrote: > Thanks... > I have been looking at the > http://www.ebay.com/itm/Universal-EEPROM-Flash-SPI-BIOS-24-25-BR90-93-USB-Programmer-6000-CHIPS-SP8-B-/371031966902?pt=LH_DefaultDomain_0&hash=item56633a84b6 > > Do you think that would do the chips? > > > On Wed, Aug 20, 2014 at 4:25 PM, Todd Micallef <tmicallef@gmail.com> > wrote: > >> John, >> >> Don't forget to measure your 5V power supply output. I doubt you are >> having >> a problem with it but the NVRAM write is disabled below a certain voltage >> (~4.25v) >> >> Todd >> >> >> On Wed, Aug 20, 2014 at 6:50 PM, <acbern@gmx.de> wrote: >> >> > the easy way to read nvram through usb is a usb-programmer that has your >> > ram in its list of supported devices:-) >> > >> > this will not solve your problem though. if you reboot the unit after >> the >> > first error messsage, amd the problem still exists, it is probably not >> with >> > the nvram. then it could be things like bus drive, chip select logic... >> > ne way to avoid spending 3k is to bus the cpu board, this is cheaper. >> > >> > >> > >> > > Gesendet: Mittwoch, 20. August 2014 um 22:37 Uhr >> > > Von: "John Phillips" <john.phillips0@gmail.com> >> > > An: "Discussion of precise voltage measurement" <volt-nuts@febo.com> >> > > Betreff: Re: [volt-nuts] HP 3458A Mem test 1 hight. How do you read >> 32K >> > memory chips? >> > > >> > > Yes they are DEI220Y-150 and DSI230Y-150 >> > > On Aug 20, 2014 4:09 PM, "J. L. Trantham" <jltran@att.net> wrote: >> > > >> > > > John, >> > > > >> > > > Which chips are these? Dallas NVRAM's? >> > > > >> > > > Do you have a part number? They can probably be read and programmed >> > with >> > > > the appropriate chip programmer. >> > > > >> > > > Joe >> > > > >> > > > >> > > > -----Original Message----- >> > > > From: volt-nuts-bounces@febo.com [mailto:volt-nuts-bounces@febo.com >> ] >> > On >> > > > Behalf Of John Phillips >> > > > Sent: Wednesday, August 20, 2014 3:54 PM >> > > > To: Discussion of precise voltage measurement >> > > > Subject: [volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K >> > memory >> > > > chips? >> > > > >> > > > Hi, >> > > > I have removed my 32k memory chips form my 3458A. Doe anyone have an >> > easy >> > > > way to connect them to a windows computer. USB would be my preferred >> > > > connection to a 28 and 24 pin socket. I would like to be able to >> read >> > and >> > > > write to the chips to validate the data. >> > > > I have replace the chips and still get Mem test 1 High on start up. >> > > > ​I really do not want to spend close to $3000 for KeySight to fix >> > this.​ >> > > > >> > > > -- >> > > > >> > > > *John Phillips* >> > > > _______________________________________________ >> > > > 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. >> > _______________________________________________ >> > 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. > > > > > -- > > *John Phillips* > -- *John Phillips*