Lowrance Precision-9 Compass Precision-9 Compass Installation Guide - Page 2

Wiring The Precision-9 compass is connected to the NMEA 2000 backbone (Network) via the supplied T-connector. Setup To achieve the best possible performance, the compass should be calibrated, and any offsets should be compensated for. The setup needs to be done from an appropriate display unit. Depending on the unit, access to the setup is available from the Device information dialog (MFDs), or from a dedicated Calibration section in the unit's Settings menu (e.g. the AP44). Example 1: Simrad MFD Example 2: AP44 ¼¼ Note: If you have a Navico display unit, but are unable to find a way to configure the Precision-9, please check if there is a software update available for your unit. Calibration Good calibration compensates for the deviation (local field) on board the boat, and adapts the sensors to the earth magnetic field strength for optimal resolution. The compass supports two calibration modes: -- Autocalibration -- Manual calibration ¼¼ Note: The setup of the compass should be done in calm sea conditions and with minimal wind and current to obtain good results. Ensure that there is enough open water around the vessel to make a full turn. ¼¼ Note: For optimal performance, new calibration may be required if the boat has traveled very far, to a location where the earth's magnetic field is significantly different from the location where it was last calibrated. This is because the strength of the magnetic field varies in different locations. 2 | Precision-9 Installation Guide