[volt-nuts] HP 3458A Mem test 1 hight. How do you read 32K memory chips?

[Todd Micallef]

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 at 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 at 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 at 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 at gmail.com>
> > > > An: "Discussion of precise voltage measurement" <volt-nuts at 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 at 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 at febo.com [mailto:
> volt-nuts-bounces at 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*
> > > > > _______________________________________________
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> > > > >
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>
>
> --
>
> *John Phillips*
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