What is magnetic distortion?
Magnetic distortion is the disturbance of accurate compass calculations caused by a sudden abundance of external magnetic fields. Many objects can generate an external magnetic field that results in compass inaccuracy, including railroad track crossings, metal structures and electronic door openers. PNI digital compasses sense any significant change in magnetic fields and the associated magnetic distortion that occurs. Depending on your model, a distortion warning may display briefly whenever your vehicle is within close proximity to a strong magnetic field. Once the vehicle has moved away from the source of the magnetic field, the compass readings will be accurate. If the distortion warning displays continuously or displays after compass setup, try setting up the compass again in a location where there is less magnetic interference.
