is the result of wires at different voltage placed closed to each other. When the voltage changes in one wire, a voltage can be induced in the neighboring one through capacitive coupling. Examples are wires coming from equipment such as function generators, oscillators, and wires from the outlet (60 Hz). The higher the frequency of the interfering source the larger the interference will be. Another source of capacitive interference are fluorescent lamps. The best way to prevent capacitive interference is to use shielded cable or coaxial cable. The shield around the cable is usually connected to the ground and protects the inner signal carrying conductor from the interference.