04-10-2008 04:26 AM
04-11-2008 04:12 PM
Hi scstop,
I noticed from another post that you had to modify nikal.c in order to successfully install the drivers. Currently National Instruments drivers and software are not supported in Fedora distribution. Therefore, I cannot guarantee that your application will work, however I have a few questions for clarification. When you run the examples from the example folder you need to wait for a few seconds to get outputs, do you get the expected outputs or even after waiting you don’t get any output at all? What voltage do you have present in the analog input? What is the actual value of the signal that you are measuring when you get readings of zero? Also, are you using a reference trigger in these examples? From the DAQmx Base 3.1 readme file: "NI-DAQmx Base 3.1 does NOT support reference trigger capabilities on the USB-621x devices."
04-15-2008 10:19 PM