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