Temperature box test with freshly build MX2, GPIB code running on Pi + ILX 5910B
TC Result = -0.27 ppm/KBuilt second MX2 board and assembled it identical to the first prototype. C6 and C7 were not installed. A LTZ1000CH was used. All five resistors were the Ultrohm Plus. The input and output connectors were tested during the build to make sure no shorts were made. The extra jumper was added between the star ground and the LT1013 pin 4.
PID settings: KP=250 Max TEC Current = 2A, NTC current = 100 uA
LTZ MX1 REF = 7.154057 VDC;
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 :)