A9 LTZ test with AC source power, 3458B@NPLC100

AC source - Chroma 61504 2000VA
-1.5ppm DCV, switch 120V, 100VAC 60Hz, P = 25W, PF = 0.75, I = 0.32A
-1.1ppm DCV, switch 120V, 120VAC 60Hz, P = 28W, PF = 0.72, I = 0.32A - 1/18 morning
+0.3ppm DCV, switch 100V, 90VAC 50Hz, P = 26W, PF = 0.75, I = 0.39A - 1/18 afternoon
-0.45ppm DCV, switch 220V, 220VAC 50Hz, P = 29W, PF = 0.69, I = 0.19A - 1/18 night
-0.4ppm DCV, switch 220V, 200VAC 50Hz, P = 27W, PF = 0.72, I = 0.17A - 1/19 morning
x ppm DCV, switch 240V, 240VAC 50Hz, P = 29W, PF = 0.67, I = 0.17A - 1/19 night

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 :)