Xilinx Spartan 6 FPGA Quick Start Manual page 28

Qdesys Sensorless Field Oriented Control Quick Start Guide
This operation will provide more attenuation for PWM switching noise in the system, which should now be
visible as smoother waveforms in the graph plots.
NOTE – the help menu is accessed from the top mc_manager window. It will lead you to the user's guide
for this application which may offer more detail.
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