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Freddie Woodruff

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  1. I have a USB-3105 board. For the application I have written, I set each of the 16 channel voltages of the DAQ board 10 times per second, so on Windows I have used the cbAOutScan function which works as intended. My code is somewhat similar to the ULAO02.C example (pared down and in a loop). I am looking to port the code to Linux. I can flash an LED on the board. Running the 'AOutScan.c' UL for Linux example, I get the error "The specified DAQ device does not support hardware paced analog output". Attempting to ignore this error, I get an error that my arguments are invalid. My hunch is it's something to do with the Rate argument (which is 'NOTUSED' in the Windows example and 1000 in the Linux example). For anyone concerned, I have a voltmeter and I have measured the typical real time latency of the USB voltage updates and they are comfortably within operational thresholds. However updating the voltages one by one with ulAOut does not meet the all channel 10Hz requirement. AOutScan.c ULAO02.C
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