These set of examples use the Converter Circuits present on the Spartan-3E board to convert Analog to Digital and vice versa.

Open the LabVIEW project file for this example. Opening any of the VIs before opening its project may lead to
failures.

There are two examples in this project, each with its own host. Before attempting execution of any example first compile the FPGA target file.
This is done by opening the VI and then pressing the run button while holding the "Ctrl" key on the keyboard. 
Once compiled open its respective host, run the VI and LabVIEW will download the example to the FPGA.

The "DACHost.vi" takes advantage of the Linear Tech LTC2624 Quad DAC present on the Spartan-3E board to change a digital value in to an Analog
Voltage value. While running the VI move the Percentage Knob, this determines how much of the maximum voltage output will actually be released to
the physical pins.Press the OK button at any time to release the desired voltage to the physical pins.
Use a MM to check the correct operation of the DAC.

The "ADCHost.vi" takes advantage of the Linear Tech LTC6912-1 Dual Amp and the Linear Tech LTC1407A-1 Dual A/D present on the Spartan-3E board 
to change a Voltage Analog value in to a Digital Value. Run the VI and then enter the desired Gain for each input. Hit the Begin button to start
sampling the Input Voltage Channels of the Spartan-3E, a sample will occur every second. Input an Analog Voltage Signal on the Input Voltage
pins and change the Gain Value to check the correct operation of the ADC. 

For more information on these Converters refer to the  Xilinx UG230 Spartan-3E Starter Kit Board User Guide 
Chapter 9: Digital to Analog Converter (DAC)
Chapter 10: Analog Capture Circuit