The system includes a lamp, a ballast, {HEAD ~ a first interface}, {TAIL ~ a storage unit}, and a processing unit 
The system includes a lamp , a ballast , { HEAD ~ a first interface } , { TAIL ~ a storage unit } , and a processing unit
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH