User`s guide

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Add a DAQ Assistant in the While Loop and configure the subVI with the wizard.
(Functions Palette  Measurement I/O  NI DAQ mx  DAQ Assistant). For the measurement
type, select Acquire Signals  Analog Input  Voltage. For the physical channel, select the
channel of incoming signal. Since channel AI0 of NI 6229 is connected to the input, select this
specific channel. Next, configure the channel settings: input -10V to 10V for input signal range,
and 1 Sample (On Demand) for acquisition mode. Note that the DAQ box needs to be connected
to the computer and turned on before starting of LabVIEW program. Save the work and restart
the program if the module fails to initialize.
The next step is to transfer the input voltage signal to strain, in the unit of micro strain,
and then display it in numerical and graphical form. Create a Formula (Function Palette 
Express  Arithmetic & Comparison  Formula), set “Input Voltage”, “Excitation”, “Gage
Factor” and “Gain” as input labels, then click “OK” to close the configuration wizard. Input the
formula as shown in the figure below.