Above is a Uni-Polar Non-Return-to-Zero to Uni-PolarReturn-to-Zero Encoder. I have questions that I need helpanswering and they are:
1. If I use a 5V p-p 4 KHz square wave to simulate an 8kbps UPNRZ alternating 1-0 sequence and adjust Rextuntil 25% duty cycle rectangular waveform is observed at the outputhow would it look? Please provide a picture of sketch.
2. Could you please provide a sketch of the input andoutput waveforms, indicating voltage levels for logic 1 and logic0?
3. What are the Nyquist frequencies for the input andthe output waveforms?
4. What is the effect of varying Rext on theoutput waveform?