| Electronics > Repair |
| HP 3478A: How to read/write cal SRAM |
| << < (7/41) > >> |
| WaveyDipole:
Thanks. At least it seems one does exist. Unfortunately my version of Labview/NI/IVI does not appear to be supported. It seems to be Labview 2012 SP1f3 version 12.0.1 and came supplied with the Rigol Oscilloscope. Would there not also have to be a driver for the GPIB adapter? |
| dfrederickson:
Sorry. Yes, the adapter will need a driver to interface to LabVIEW. It might be easier to just buy an adapter off eBay, like I did. |
| WaveyDipole:
I have uploaded my HP3478A control program code to GitHub. This is the first time I have ever done that! https://github.com/WaveyCode/HPRDMM At present it does not contain the code for reading the calibration data as I'm having lots of trouble acquiring it from the meter. I suspect this is down to the Arduino adapter, but I'm not sure. I've been experimenting with a python script and got something that resembles the output I should be getting but its not 256bytes long and contains the phrase 'CR or LF inserted' which is an error message embedded in the adapter code. Sorry, but I don't have an NI capable GPIB adapter to test with. |
| iainwhite:
I have been playing with Pigrew's windows C# program (from https://github.com/pigrew/HP3478Ctrl ) I forked my own version at https://github.com/iainkwhite/HP3478Ctrl and after tinkering a bit, managed to read my cal data. Here is what I got (formatted to lines of 16 bytes) --- Code: ---@@@@BAIBMLOMKL@@ @@BBBLDNBMI@@@@@ BBMMMAMCIIIIIEBM @MLJEIIIIIIBMCMA JI@@@@@@@@@@@OO@ @@FFCADAACNFIIIH GIALLEAJMIIIIHH@ ECC@L@IIIIIHALL@ AK@IIIIII@EDEMJN IIIIIH@EDCDKJIII IIIALL@LJDIIIIII @EDBEKI@@@BFBCLC A@NB@@@@BFCLEAEM M@@@@@@@@@@@OO@@ @FFCBDBBCNC@@@@@ @@@@@@OO@@@@@@@@ --- End code --- Edit: add screenshot |
| pigrew:
--- Quote from: iainwhite on June 29, 2017, 04:08:55 pm ---I have been playing with Pigrew's windows C# program (from https://github.com/pigrew/HP3478Ctrl ) I forked my own version at https://github.com/iainkwhite/HP3478Ctrl and after tinkering a bit, managed to read my cal data. --- End quote --- Thanks for the changes, I've merged most of the changes back into my branch, and posted a new binary: https://github.com/pigrew/HP3478Ctrl/releases/tag/v0.20170630 -Nathan |
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