A number of years ago at an ACM SIGCSE Technical Symposium,there was a presentation from a school that created a datacommunications cart on wheels. This cart, amongst other things,contained a large spool of twisted pair wire, an oscilloscope, anda signal generator. The instructors would use the signal generatorto insert a square wave (digital signal) into one end of the spool,and then connect the oscilloscope to the other end of the spool ofwire. By observing the received signal on the oscilloscope theywould see what happened to the signal as it propagated through thecoil of twisted pair wire.
Questions:
- What happens when we increase the length of wire? Shorten thelength of wire?
- What happens if we increase the data rate of the signalinjected into the spool of wire?
