User guide

22 Altera Corporation
Stratix II Professional Filtering Lab
5. Click the binocular icon to auto-scale the waveforms.
Figure 14 shows the scaled waveforms in the time domain for the
unfiltered data.
Figure 14. Time Domain Plot of adder_result_sim—Unfiltered Data
Figure 15 shows the scaled waveforms in the time domain for the
filtered data.
Figure 15. Time Domain Plot of fir_result_sim—Filtered Data
6. Switch to the MATLAB Command Window.
7. To view the frequency response of the filtered and unfiltered signals,
use the plot_fft.m file, which is included with the lab.
a. To view the unfiltered data, type the following command in the
MATLAB Command Window:
plot_fft(adder_result_sim,'Frequency Response – Unfiltered Data',10e7) r