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I have a problem with a power meter USB-5680. At the first scan on MAX program seem to be all OK, but after, on a second scan the serial number disappear and the example "ni568x Getting Started.vi" give me an error -1074118646 "ni568x Initialize With Options.vi<ERR>Error: (Hex 0xBFFA400A) The device encountered an error while setting the calibration factor frequency".