For both PPM and PDM _______ is kept constant.
A. Amplitude
B. Time period
C. Frequency
D. Number of levels
Answer:A
For both PPM and PDM _______ is kept constant.
A. Amplitude B. Time period C. Frequency D. Number of levels
Explanation: In PPM waveform delaying or advancing of pulse is done. In PDM the pulse width is varied. Thus in both the cases amplitude is maintained constant.