Test of KX LTZ1000 #2 (TSR:12K/1K) reference, various box temperatures, battery powered. Readings 3458A@NPLC200
Retry test. Changed 10K resistor and changed bodge wires to copper. Added foam box around LTZ.
TCBOX is +0.14 ppm/K ±1ppm pink noise
TCModule is -3.75 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/
* D3.js plots SVG graph online :)