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I'm using analog entry AIN0 on my LJ U3-HV to receive information from sensor which deliver 0 - 3.5V. I've seen that U3-HV analog entry range's could be change to 0 - 3.6V. Is that True ? If yes how can i change that ?
Yes, the special range on the low-voltage analog inputs (FIO & EIO) is about 0 to 3.6 volts. Set the negative channel to 32 to use the special range:
https://labjack.com/support/datasheets/u3/hardware-description/ain