transmitting an illumination signal to the ballast via the first interface, such that the ballast controls the illumination of {HEAD ~ a lamp} according to {TAIL ~ the first waveform} 
transmitting an illumination signal to the ballast via the first interface , such that the ballast controls the illumination of { HEAD ~ a lamp } according to { TAIL ~ the first waveform }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL