VPG BMF set TCR test, GPIB code running on DE1-SOC, Ramp up

TC 3458 (VPG S102 120R00) : -0.65 ppm/K
TC 2002-4 (S5-61 909R TCR=30ppm) : -2.78 ppm/K
TC 2002-6 (S5-61 1.96K TCR=30ppm) : +3.95 ppm/K


Result CSV-data from HP 3458A

Workflow:

* RPI accesses DMMs via GPIB and reads data.
* Data is formatted by python script into DSV string and written/append to file on FTP
* DSV-file is visible publicly on https://xdevs.com/datashort/
* Page http://xdevs.com/datalog_mm/ runs D3.js javascript library to read DSV file test.log to input data
* D3.js plots SVG graph online :)