I want to create a 50Hz noise on signal transmission line options which are a coaxial cable with BNC connectors and the other is an STP cable with BNC connector. Cables are like 10 meters long or more.
As receiver system I have two data-acq. systems, where one is single-ended input and the other is diff-input.
Imagine the output impedance of the source is balanced or neglect it.
So there are four combinations:
Coaxial to single ended daq
Coaxial to diff ended daq
STP to single ended daq
STP to diff ended daq
I want to experiment and demonstrate these in case of 50Hz interference.
But I dont know how can I create 50Hz interference on the lines.
How can I couple a significant 50Hz magnetic inference to a cable in practice? Is there an easy practical way?