Question

22 gauge copper wire has 22 milli-? per foot resistance. If the receiver loads the signal wire with 50? (for noise reduction) and the transmitter applies a 2.5 V signal as a logic ‘1’, how many feet of wire can be used between transmitter and receiver before the logic ‘1’ becomes less than the 1.3 V minimum threshold for a ‘1’ at the receiver? Remember that voltage is being dropped in both wires of the twisted pair.

Answer 1