Garmin SteadyCast Heading Sensor Installation Instructions - Page 3

4 Select Done. Performing Basic Calibration If you connect the sensor to a NMEA 2000 network without a compatible Garmin chartplotter, you must perform basic calibration instead of menu-based calibration. You must be able to view heading data from the sensor on a connected chartplotter or marine display before you can perform basic calibration. If you cannot view heading data on your connected display, check the NMEA 2000 network and power connections. All other sources of heading data that are not based on GPS must be removed from the NMEA 2000 network while performing basic calibration. When performing basic calibration, you first calibrate the compass and then align the heading in one continuous procedure. If you installed the sensor with the cable pointing toward the bow, parallel to the keel, it may not be necessary to align the heading. NOTE: If you choose to align the heading, you must connect a GPS source to the NMEA 2000 network. The boat must be able to reach a cruising speed of at least 6.4 km/h (4 mph) to perform the heading alignment. 1 Drive the boat to a location with calm, open water. 2 Set the display to view heading data from the connected sensor. 3 Disconnect the sensor from the NMEA 2000 network or turn off the power to the NMEA 2000 network. 4 Wait while the boat becomes level and stationary. 5 Turn on power to the sensor, and wait until the heading data appears on the display . À 6 Within three minutes, complete two full, slow, tight circles , Á taking care to keep the boat as steady and level as possible. The boat should not list during calibration. If possible, you can turn the vessel in place by engaging two engines in opposite directions. When the sensor is prepared to calibrate the compass, the heading data disappears from the display  You may receive an error message that the heading was lost. You can ignore this message. 7 Continue turning in the same direction at the same speed for approximately 1 1/2 rotations until the heading data à appears . Ä When the heading data appears, the compass has been calibrated successfully, and you can align the heading (optional). 8 Select an option. • If you want to align the heading to match the front of the boat, proceed to the next step. • If you installed the sensor with the arrow pointing parallel to the front of the boat, and do not want to align the heading, stop turning and wait, keeping the boat stationary. Over the next two minutes the heading data should disappear and then reappear. When the heading data reappears, the compass should be calibrated and no heading offset should be applied. NOTE: If an unwanted heading offset is applied, you must disconnect all GPS sources from the NMEA 2000 network, and repeat the calibration. If the only available heading display is also a GPS source, you must repeat the calibration, and disconnect the sensor after step 7. 9 Continue turning in the same direction at the same speed for approximately ten seconds, until the heading data disappears from the display . Å 10When it is safe, straighten the boat and drive in a straight line at cruising speed (must be at least 6.4 km/h (4 mph)) until Æ the heading data appears . Ç When the heading appears, the compass has been calibrated, and the heading has been aligned on the sensor. 11Test the results of the calibration, and repeat this procedure if necessary. Restoring Factory Default Settings If you relocate the sensor or do not believe the calibration was successful, you can delete all calibration information from the sensor, and restore its factory default settings. After restoring the factory default settings, you must configure the sensor before you can use it with your system. 1 Select Settings > Communications > NMEA 2000 Devices > Device List. 2 Select the name of the sensor. 3 Select Review > Factory Defaults > Yes. Specifications Specification Measurement Dimensions (L x W x H) 87.35 x 53.84 x 34.29 mm (3.4 x 2.1 x 1.4 in.) Weight 182 g (6.4 oz.) Temperature range From -15° to 70°C (from 5° to 158°F) Material Fully gasketed, high-impact plastic Water resistance IEC 60529 IPX7* NMEA 2000 input voltage From 9 to 32 Vdc NMEA 2000 LEN 2 (100 mA) Compass-safe distance 5 cm (2 in.) 3