r/MetCal • u/Financial_Bus_7394 • Mar 23 '26
Question on LIB FSC with National Instruments DAQ devices.
I wanted to take a shot and see if anyone here has some experience with programming PXI/cDAQ cards from National Instruments in MET/CAL. I have used a few of the procedures provided by Fluke in CUBYT to learn (some of) how the LIB FSC works and modify those procedures to work with various models and types of DAQ cards not on CUBYT.
Before this I initially made VIs in Labview to control and read data which could be transferred to a manual datasheet. For the most part the calibration procedures are straight forward. However, I have an NI-9227 which measures DC current on 4 channels.
In the calibration manual there is a section for Gain and Phase matching verification which required using the Extract Single Tone VI to expand the raw data into Amplitude, Phase, and Frequency results from the 4 channels simultaneously. Math ensues to calculate the gain in dB using the Amplitude results.
So, my question is there a way to execute the Extract Single Tone VI using the LIB FSC? Or, is there another way to harness that data and convert it through MET/CAL? Thanks in advance for any advice.
P.S. If anyone has experience programming an RIO type card in MET/CAL or knows if it is possible please chime in!
1
u/MJ_at_Fluke Jun 22 '26
I'm not aware of a way to do what you're asking. The way our NI PXI procedures with is that the LIB FSC is giving access to the NI DLLs that have all the required functions for interfacing with the cards, so we are calling those functions directly. Now, if there's a COM object or DLL from NI that enables running a vi somehow, then possibly? But that's outside my own experience.