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.len...@gmx.de> wrote: > > > > Gesendet: Sonntag, 07. Februar 2016 um 18:30 Uhr > > Von: ludger.len...@gmx.de > > An: volt-nuts-boun...@febo.com > > Cc: "Adrian Bernhard" <acb...@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@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.