Set the Calibration Mode to Calibrated in the C Series Module Properties dialog box for the NI 9242 and NI 9242 if you want the FPGA I/O Node to return calibrated, fixed-point data from the module.

When Calibration Mode is set to Raw, the FPGA I/O Node returns calibrated, binary data from the module. Convert the binary values to engineering units. You must convert these values in the host VI.

Using an Equation to Convert Binary Values to Voltage

You can use the following equations in the host VI to convert binary voltage values to volts: NI 9242

Use the following equation in the host VI to convert binary voltage values to volts:

NI 9242: Volts = Binary Value × 500 V ÷ 8,388,607

NI 9244: Volts = Binary Value × 997.5 V ÷ 8,388,607

Where
  • Binary Value is the value returned by the FPGA I/O Node.