 The PWM Logic 0 is V_Hi for the first 41.7 μs followed by V_Low for the rest of the symbol period while Logic 1 is V_Hi for the first 81.3 μs (V_Low for the rest).The preamble should send V-Hi for three periods then V_Low for one period then a logic 1 start bit.The 14-bit data breaks down sequentially as follows