I did it time ago.
Warmed up ~3 hours / Measure value with my 3548A.
Next trimmed to mid of trimmable range (pot to center).
Than trimmed (by shorting step by step) as close as possible to 10.000V.
/PeLuLe
> Gesendet: Sonntag, 19. November 2017 um 06:51 Uhr
> Von: "Jeremy Nichols"
> An: volt-nu
Yes, I absolutey agree. Also in my understandig a good re-engineering means a
reproducabel, secure and as good as possible documented.
Due to the sensivity of a possible CAL-Data damage the tests for verification
should be well prepared.
I am actually digging into the firmware, to check how the d
No Problem, share with TiN if it helps.
BR
PeLuLe
> Gesendet: Dienstag, 09. Februar 2016 um 01:15 Uhr
> Von: "Todd Micallef"
> An: "Discussion of precise voltage measurement"
> Betreff: Re: [volt-nuts] Fw: Datron 1281 / 1271 secret GPIB cmds for
> CALRAM-Readout
>
> PeLuLe,
>
> Thanks for you
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 compl
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"
> An: "Discussion of precise voltage measurement"
> Betreff: Re: [volt-nuts] Fw: Datron 1281 / 1271 secret GPIB cmds
volt-nuts@febo.com
> Gesendet: Sonntag, 07. Februar 2016 um 19:52 Uhr
> Von: ludger.len...@gmx.de
> An: volt-nuts , "VOLT NUTS"
> Betreff: Just uploaded to KO4BB: Datron 1281 User Manual & Service Manual
>
> Hi folks,
>
> as the owner of the Datron manuals copyright has stopped the business and
> Gesendet: Sonntag, 07. Februar 2016 um 18:30 Uhr
> Von: ludger.len...@gmx.de
> An: volt-nuts-boun...@febo.com
> Cc: "Adrian Bernhard"
> 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 refurbish
I have send him a mail yesterday and aksed to take some pictures from inside.
BR
Ludger.
Gesendet: Donnerstag, 22. Oktober 2015 um 20:42 Uhr
Von: "Todd Micallef"
An: "Discussion of precise voltage measurement"
Betreff: Re: [volt-nuts] Wavetek 1281
The seller has posted more internal photos.
The pictures show error 9005, means "Serial Interface Error". This is the
typical error, if the Analog-Board is not installed.
BR
Ludger
Gesendet: Donnerstag, 22. Oktober 2015 um 15:32 Uhr
Von: "Electronics and Books via volt-nuts"
An: "Discussion of precise voltage measurement"
Betreff:
Yepp, you are right.
Sorry for misleading.
PeLuLe
Gesendet: Dienstag, 15. September 2015 um 02:44 Uhr
Von: "David C. Partridge"
An: "'Discussion of precise voltage measurement'"
Betreff: Re: [volt-nuts] Looking for Datron 4808 Service Manual
Didier only seems to have the User Manual ...
R
You may look at KO4BB / Manual
http://www.ko4bb.com/getsimple/index.php?id=manuals
BR
PeLuLe
Gesendet: Montag, 14. September 2015 um 21:25 Uhr
Von: "Joe D'Elia"
An: volt-nuts@febo.com
Betreff: [volt-nuts] Looking for Datron 4808 Service Manual
Having recently acquired a Datron 4808 calibrato
How about a Fluke 5450A Resistance Standard. I have one and fully satisfied
regaring precision, drift and tempco. Covers all your values.
One is actually offered for $600 or offer with calibration, means less than $60
per value.
http://www.ebay.de/itm/Fluke-5450A-Resistance-Standard-NIST-Digita
___
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.
For all, working on a modification of the HP-419A:
I have uploaded to my HP-419A share point some high quality schematics, I have
created for the modification process.
Link:
https://www.dropbox.com/sh/czd2uc3t0uvgggz/AAC--ykVziW9rSJkdg2J_-wZa?dl=0
Important note:
I created them using PaintNET on
I had the same issue in the beginning (bad online reading with embedded PDF
Reader).
Thus I downloaded the ZIP package and had no issues anymore.
Thus it seems to be an issue of the online reader, not caused by the files.
BR
PeLuLe
Gesendet: Donnerstag, 25. Juni 2015 um 11:08 Uhr
Von: "Charl
Hi Randy,
I have just installed a 2GB "dropbox" (thanks for the tip, John).
That's the link:
https://www.dropbox.com/sh/czd2uc3t0uvgggz/AAC--ykVziW9rSJkdg2J_-wZa?dl=0
BR
Ludger
Gesendet: Sonntag, 21. Juni 2015 um 21:09 Uhr
Von: ludger.len...@gmx.de
An: volt-nuts@febo.com
Cc: "Discussion o
Hi Randy,
I would be happy to go on with the modification (for the HP 419A).
Will also rout a PCB - plan to use EAGLE (V6) or maybe Altium Designer 14 (not
yet used to).
Any information (ideas, sketches, notes, files...) is highly welcome.
I don't have an account for upload either, thus simply
Hi Greg,
Yes, I am open to sell it.
I guess, 350 EURO plus shipment cost is a fair price.
It would come with the required cables, shielding plate and the srews to mount.
I did a short function test in my 1281 and got plausible values.
So I will give also a DOA guarantee with cash-back, if you tak
Hi Randy, how is the modification of the HP419A ongoing?
Still interrested and open to help/support.
BR
PeLuLe
___
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
I have one spare (Germany).
The AC option is a board with shields and cables. Simple to plug-in and to
mount at the bottom of the system.
Same as for the current option board.
The 1271/81 detects it when the function is activated.
There is no special requirement or matched version, but for sure yo
Note: I have also posted at EEVBLOG forum.
In my Datron 1281 (8.5 digit) bench DMM it seems, some of the electrolytics
haved aged and need to be replace. I like to save the CAL-RAM content for
security before working on (A backup is a good idea anyhow, if the battery
drops).
Does anyone know how
I had same experiance with DS, even it is free, it not quite professional to
use.
I checked several free available PCB programs. I would recommend KiCAD, but the
free version of EAGLE and the free German program "Target 3001" (actual v1.7) I
can also recommend.
BR
Ludger Lenzen
Hi Randy,
I have an HP-419A (ser# 948A-06384, seems to be one of the latest revisions
~198x)
I refurbished myself including battery pack (NMiH) and it works not bad.
Just noise in the highest sensivity range isn't sufficiant.
I have a spare HP-419A (ser# 543-00149, one of the olderst revisions ~
I am searching for the calibration enable key for my Datron 1281.
At EBAY one key for the Wavetek 4808 Calibrator is offered.
Does anybody know if this key fits also to the Datron 1281?
Thanks for Help.
PeLuLe / Germany
___
volt-nuts mailing list --
___
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.
27 matches
Mail list logo