I need to transport an RS-485 signal over a "long" cable (100 meter). The cable will receive lots of noise (large motors, ...) I'm planning to use the SN75176 as a driver and receiver.
Is it ok to use UTP cable, or should i use STP? What kind of grounding topology i have to use in the transmitter and in the receiver?
Can somebody help me with this, or give some URL where i can find more info?