performing FFT by WaveView

Main steps:
1. open the waveform file and click on ADC output signals
2. performing ADC function
3. performing DAC function
4. performing FFT function

Steps:
1. execute the waveview binary file
>> wv &

2. open the waveform file, arrange signals from MSB to LSB (top-to-down)
eg. ~/ADC/spectre/schematic/psf/tran.tran

 3. select all signals and then click on the ADC icon

 4. 

5. group the A2D signals as one signal

6. performing DAC function on the grouped signal

 7. select the reconstructed waveform and press the tools/FFT icon