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matt_sgf

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  1. Thanks for the code. I consistently get +0.9988 @ 1.0V I get +0.6988 @ 0.7V and +0.4987 @ 0.5V
  2. Hi I've just tried again. I made the edits to the example, see attached. I applied 1.0V and the value reads low still. I am using channel 0 with a 100k resistor between the low and the ground as instructed. I also edited the Python code example with the same result. I'm using OpenSuse 15.4. Can you suggest anything I might be missing? Thanks AIn_dif.c
  3. Hi I'm using a USB-1608G and I connected a voltage device in the differential set-up. I installed the Linux driver. I adapted the sample code 'AIn.c' to work for differential voltages by setting: inputMode=AI_DIFFERENTIAL; range=BIP1VOLTS; However, the voltage reading is low. If I apply 1.0V I read around 0.998V. This uses the ulAIn function. If I plug the device in to a Windows laptop and read the voltage using DAQami I get 1.0V. Also, I adapted the sample code 'AInScan.c', which uses the ulAInScan function, to read differential voltages and this gave approx 1.0V. Is there a problem with ulAIn voltage reading? Perhaps I am missing a required setting? Why does the ulAInScan give a different (and correct) number? Thanks Matt
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