The processing unit obtains {TAIL ~ at least one first waveform} from the storage unit, and writes the first waveform to the ballast via {HEAD ~ the first interface} 
The processing unit obtains { TAIL ~ at least one first waveform } from the storage unit , and writes the first waveform to the ballast via { HEAD ~ the first interface }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD