TX7168 setup, 10-resistor TCR test, GPIB code running on TFT-Pi + 82357B FC

Time Electronics 9823 MFC source 3000 µADC to chain of 8 resistors ()
Keithley 7168 8-channel nanovolt scanner + RPI in K7001 chassis scanning voltage across each resistor in chain, CBM-way, 5s-1s-3s soak setting
Keithley 182-M measures voltage across resistor. Then MFC source -3000 µADC current and voltmeter reads TEMF compensation voltage to calculate OCOMP OHM.
Keithley 2002 K6 measures 1 x VHP102L 7.000 KΩ #1 BMFR, 20K range, OCOMP ON
Keithley 2002 K4 measures 1 x S102 40.000 KΩ #2 BMFR, 200K range, OCOMP OFF


Reference levels:
var ref_ch1 = 539.60383 Ω // 7168 CH1
var ref_ch2 = 329.9257 Ω // 7168 CH2
var ref_ch3 = 329.9268 Ω // 7168 CH3
var ref_ch4 = 10.000707 Ω // 7168 CH4
var ref_ch5 = 178.0863 Ω // 7168 CH5
var ref_ch6 = 522.1358 Ω // 7168 CH6
var ref_ch7 = 522.1601 Ω // 7168 CH7
var ref_ch8 = 522.0688 Ω // 7168 CH8
var ref_k4 = 40000.068 Ω // 2002 4
var ref_k6 = 7000.6541 Ω // 2002 6

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 :)