{HEAD ~ The readhead asymmetry} is determined by the method of this invention by measuring {TAIL ~ an output voltage pulse} of the readhead, when it is excited by magnetic pulses both forward and rear of its read gap 
is determined by measuring
{ HEAD ~ The readhead asymmetry } is determined by the method of this invention by measuring { TAIL ~ an output voltage pulse } of the readhead , when it is excited by magnetic pulses both forward and rear of its read gap
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH