FX-4 module with 10V stage, temperature test, DMM tempco check, GPIB code running on RPI3 + NI GPIB-USB-HS FC

3458's , K2002-4 have TCV = <0.05 ppm/K

Config : LTZ1000A, LT1013ACN8, 1K , 13K , 120R, 70Kx2 Edwin PWW. Temp-Corr R not installed
Output : ADA4522-2, FHRN 1
Powered by Keysight E36312A +12.6V (~27mA) and -12.6VDC 1.7mA, LT3042 onboard used
PID settings: KP=140, KI=0.1, KD=0.9, Max TEC voltage = 10.5V, Max TEC Current = 1.3A, YSI 44006 current = 100E-6 A

Reference levels:
LTZ1000A Module FX4 REF = 10 VDC;

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 :)