I'm trying to create sort of life test for series of 1-way mechanical switches. In this test I need to measure insertion loss of my devices under test while repetitiously switching them. I use USB controlled 4-way switch to test 4 DUT's at the same time. I built a Sub VI that switches to the selected path (S-1, S-2, S-3 or S-4) and takes a measurement. It works pretty well.
Now I'm adding another 4-way switch to test another 4 DUT's. And I have a plan to add up to 8 4-way switches running in parallel. It works. But I was surprised that the measurement time doubled. And I figured out that my second Switch&Meas Sub VI can't be called from a parallel While Loop simultaneously with the first one. It waits until the first one finishes its routine.
Ok. I saved a copy of the Sub VI and call it from a second loop. And now it works in parallel, both 4-way switches are switching like crazy. But I feel that I just made another stupid thing.
Please take a look at the example. I removed any device specifics, replacing them with delays and random numbers. Can you suggest any way of running the same Sub VI in parallel without creating multiple copies?
