In one embodiment, the system 40 may require {HEAD ~ means} for converting {TAIL ~ optical data} related to the rotor shaft 50 to a voltage and then using telemetry for transmitting the voltage signal 
for converting
In one embodiment , the system 40 may require { HEAD ~ means } for converting { TAIL ~ optical data } related to the rotor shaft 50 to a voltage and then using telemetry for transmitting the voltage signal
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH