Types of Conversions Cont

™   POLAR Encoding has 3 subcategories:    Non Return to Zero (NRZ),-- Return to Zero (RZ)    Bi phase    Two of which have multiple variations of their own    Polar encoding uses two voltage levels -One positive and one negative                By using two voltage levels, average voltage level on the line is reduced         and DC Component problem of unipolar encoding is alleviated Types of Polar Encoding Non Return to Zero (NRZ) o    In NRZ Encoding, the level of signal is either positive or negative