Hello, I'm trying to connect the LabJack U12 to Horiba Mass Flow Controller. The LJTest fails one test: AI NC SE Test. I checked the LJLogger and the first two channels (SD0 and SD1) read less than 1.43 volts, around 0.5 volts.
How can I fix the problem?
Thanks
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LJtest will fail if anything is connected besides USB:
https://labjack.com/support/datasheets/u12/example-applications/ljtest
Also note that floating analog inputs on the U12 sit at around 1.43 volts. See the last paragraph here:
https://labjack.com/support/app-notes/floatingunconnected-inputs
So, it might work properly, right? I shouldn't be concerned about the failed test because it's already connected to the Horiba MFC.
Correct. If you have anything connected it is normal for LJtest to fail.