Datalog run GPIB code running on Pi3 + E5810A with DP160 scanner, sample time 656 seconds

N4-100 reference, powered by 220V 50Hz from Chroma 61604 AC source.
Result CSV-data

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 :)