Innovate Motorsports LogWorks 3 - Manual (Page 16)

LogWorks3_Manual_1.01.doc - 16 -
injectors, ignition system or alternator. Any (changing) current flowing through a conductor
creates a changing magnetic field. A changing magnetic field intersecting another conductor (for
example the sensor wires) will create a voltage along that conductor. This voltage is added as
noise to the sensor signal. This is how an antenna for radio signals works as well.
By twisting the sensor output and sensor ground wire together, that induced noise can be
minimized. Each twist creates a wire loop acting as small antenna to pick up the induced noise.
BUT, the noise induced in each loop changes polarity from loop to loop. This way each twist-loop
cancels out the noise from the previous loop. The tighter the twist, the more cancellation can be
achieved.