[volt-nuts] Fw: Datron 1281 / 1271 secret GPIB cmds for CALRAM-Readout

Tue Feb 9 06:59:56 EST 2016

No Problem, share with TiN if it helps.

BR
PeLuLe

> Gesendet: Dienstag, 09. Februar 2016 um 01:15 Uhr
> Von: "Todd Micallef" <tmicallef at gmail.com>
> An: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
> Betreff: Re: [volt-nuts] Fw: Datron 1281 / 1271 secret GPIB cmds for CALRAM-Readout
>
> PeLuLe,
> 
> Thanks for your help. I have been following you on EEVblog too. I go by
> ManateeMafia. TiN has been very helpful at getting my article together and
> he has a good way of explaining the info, He has been helping with the
> photo editing too as you can tell from his other articles he likes lots of
> detail,
> 
> If you don't mind, I will share the dropbox link with him and he will place
> the info into the article with the proper credit given to you.  The
> firmware is helpful and I believe my second meter has the same version.
> 
> Todd
> 
> 
> On Mon, Feb 8, 2016 at 5:46 PM, <Ludger.Lenzen at gmx.de> wrote:
> 
> > Thanks for the link, Todd.
> >
> > It's a great site, I didn't find, even I looked for it. I regular check
> > xDevs for interesting project.
> >
> > I have looked to the page and found a minor errors I like to note:
> > The "Datron 1281 Calibration and service manual, Volume 1, Issue 1, July
> > 1989"
> > in fact is the complete SM (Vol1 and Vol2), I know as I have uploaded to
> > KO4BB myself :-)
> >
> > My firmware is: v3.12, 05/11/96. I have placed the ROM files to a Dropbox
> > folder.
> >
> > On the site is mentioned, you are looking for the specs of the DC405E2
> > (VFD 1x40 DOT Matrix Display).
> > I could manage to get the original spec from ITRON service some years ago
> > (I am a good customer).
> > I have optimized and added some useful information. I dropped to the
> > Dropbox also.
> >
> > I had the plan for a "Datron 1281 DC4052 replacement". Mine was broken on
> > shipping.
> > I have added a picture of latest state of project.
> > It's on hold, as I got a complete Display Assembly and had no need for
> > anymore.
> >
> > I will keep the Dropbox for one week, than I will delete as I need the
> > space for a joined project.
> > Link:
> > https://www.dropbox.com/sh/rxeb86eq9m35tyu/AADwDNeCYQWp4RSZ2rVQ3y-ua?dl=0
> >
> > BR
> > PeLuLe
> >
> >
> >
> > > Gesendet: Montag, 08. Februar 2016 um 00:56 Uhr
> > > Von: "Todd Micallef" <tmicallef at gmail.com>
> > > An: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
> > > Betreff: Re: [volt-nuts] Fw: Datron 1281 / 1271 secret GPIB cmds for
> > CALRAM-Readout
> > >
> > > https://xdevs.com/fix/d1281/
> > >
> > >
> > >
> > > On Sun, Feb 7, 2016 at 6:43 PM, <Ludger.Lenzen at gmx.de> wrote:
> > >
> > > > Hi Todd,
> > > > have tried to find the information @ xDevs. No luck.
> > > > Is there a link you can share?
> > > >
> > > > BR
> > > > PeLuLe
> > > >
> > > >
> > > > > Gesendet: Sonntag, 07. Februar 2016 um 21:59 Uhr
> > > > > Von: "Todd Micallef" <tmicallef at gmail.com>
> > > > > An: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
> > > > > Betreff: Re: [volt-nuts] Fw: Datron 1281 / 1271 secret GPIB cmds for
> > > > CALRAM-Readout
> > > > >
> > > > > PeLuLe,
> > > > >
> > > > > I am currently working on two 1281's. If you have anything you would
> > like
> > > > > me to try, let me know. I am certain my cal constants are not good
> > on one
> > > > > of them. The battery was just changed a few days ago and it appears
> > to be
> > > > > the original from '87. I also had some intermittent NVRAM errors.
> > > > >
> > > > > Replacing caps worked for the first 1281 and cleared the DCV 2182
> > error.
> > > > > The project is a WIP and everything is being documented on xDevs.
> > > > >
> > > > > Also, please post your FW versions. Both of mine are at different
> > revs
> > > > and
> > > > > I would like to know the different versions from Datron/Wavetek
> > > > >
> > > > > On Sun, Feb 7, 2016 at 2:33 PM, <Ludger.Lenzen at gmx.de> wrote:
> > > > >
> > > > > >
> > > > > >
> > > > > > > Gesendet: Sonntag, 07. Februar 2016 um 18:30 Uhr
> > > > > > > Von: Ludger.Lenzen at gmx.de
> > > > > > > An: volt-nuts-bounces at febo.com
> > > > > > > Cc: "Adrian Bernhard" <acbern at gmx.de>
> > > > > > > Betreff: Datron 1281 / 1271 secret GPIB cmds for CALRAM-Readout
> > > > > > >
> > > > > > > Hi volt-nuts
> > > > > > >
> > > > > > > I like to backup the Datron 1281 CAL RAM data. Mine need to be
> > > > > > refurbished (caps replacement, case cleaning...)
> > > > > > > The 1281 quite good in cal (~3ppm difference to my 3458A which
> > had
> > > > last
> > > > > > cal 2014/OCT), which I don't want to risk.
> > > > > > > In any case this migh a helful knowledge for all of us.
> > > > > > >
> > > > > > > I am lucky having another 1281 "for part" without a Display- and
> > > > > > DC-Assembly but a wokring Digital Board.
> > > > > > > I dumped the ROM to have a deep look into the GPIB commands and
> > > > searched
> > > > > > for potential undocumented existing
> > > > > > > (like it was done for the 3458A already).
> > > > > > >
> > > > > > > I found following, in the service and user manual not documented,
> > > > > > potential commands (?):
> > > > > > >   RAM = may a RAM command, seems to be the best chance
> > > > > > >   PRIM = may a subfunction of RAM for primary RAM
> > > > > > >   SECN = may a subfunction of RAM for secondary RAM
> > > > > > >
> > > > > > >   IPZ = no glue yet
> > > > > > >
> > > > > > >   YEUK = command to set something, no glue yet about function
> > > > > > >   YEUK? = query comand of the YEUK command
> > > > > > >
> > > > > > >   CALISS? = seems to be a qery for calibration purpose
> > > > > > >
> > > > > > > To (hopefully) save some of the allways limited private time, I
> > would
> > > > > > like to aks, if some of you have seen that commands (?) or have
> > more
> > > > > > details on them. They may used at other Daltron tools also...
> > > > > > > Next I will start with the debugging of the unknown remaining
> > > > commands
> > > > > > on processor board level.
> > > > > > >
> > > > > > > Thanks for help already in advance.
> > > > > > > BR
> > > > > > > PeLuLe
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > _______________________________________________
> > > > > > volt-nuts mailing list -- volt-nuts at 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 at 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 at 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 at 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 at 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 at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts
> and follow the instructions there.
> 