An attempt at using Python to control LabVIEW . . .

[dbbotkin]

Here is a Python script that interacts with a LabVIEW VI to automate the external CAL process for PXI-4071 and PXI-4070.

https://forums.ni.com/t5/Digital-Multimeters-DMMs-and/NI-PXI-4071-Error-During-Adjustment/m-p/4258260#M3181

Being a retired engineer supporting a non-profit which refurbishes 'retired' meters and instruments for donation to other organizations that help young folks with electronics, robots, etc., we have no "Fluke 5720a calibrator". Working on a low volume of repairs and adjustments, we use a Fluke 732a 10VDC reference, an HP3458a DMM and an HP3245a universal source for DCV and a series of Vishay precision resistors for Ohms.

This is NOT an alternative to a proper CAL Lab, just used for adjustments to extend the useful life of good quality equipment. Still there is a need for very stable temperature, precision standards for volts and ohms and long-term records of measurements of the standards. Also transfer standards that are NIST traceable (preferably with 'uncertainties' documentation) are essential to benchmark the working standards. It takes two plus digits of precision to calibrate with any confidence under the best of circumstances.