Spy Heading Sensor Calibration
When you connect the Spy™ pole with a paired heading sensor to a compatible Garmin® chartplotter, the Spy™ Pole Setup Wizard will prompt you for calibration during setup. Otherwise, you can perform menu-based calibration through the Spy™ Pole toolbar on your chartplotter (Performing Menu-Based Calibration). Go to www.garmin.com for a list of compatible chartplotters.
After installation is complete, you must calibrate the Spy™ heading sensor, as it does not provide heading data until it is calibrated.