93AQUAMAP™ 10x2/12x2 SERIESto know the true depth of the water, measure the distance from thetransducer to the water line. Enter this value in as a negative number.2 Select Settings > My Vessel > Depth and Anchoring > Keel Offset.3 Select if the transducer is installed at the water line, or select if thetransducer is installed at the bottom of the keel.4 Use the arrow keys to enter the keel offset measured in step 1.Setting the Water Temperature OffsetBefore you can set the water temperature offset, you must have a NMEA0183 water-temperature sensor or a temperature-capable transducer tomeasure water temperature.The temperature offset compensates for the temperature reading from atemperature sensor.1 Measure the water temperature using the temperature sensor ortemperature-capable transducer that is connected to the AQUAMAP.2 Measure the water temperature using a different temperature sensor or athermometer that is known to be accurate.3 Subtract the water temperature measured in step 1 from the watertemperature measured in step 2.This is the temperature offset. Enter this value in step 5 as a positivenumber if the sensor connected to the AQUAMAP measures the watertemperature as being colder than it actually is. Enter this value in step 5as a negative number if the sensor connected to the AQUAMAP measuresthe water temperature as being warmer than it actually is.4 Select Settings > My Vessel > Temp. Offset.5 Enter the temperature offset calculated in step 3.Calibrating a Water Speed DeviceIf you have a speed-sensing transducer connected to the AQUAMAP, you cancalibrate that speed-sensing device to improve the accuracy of water-speeddata displayed by the AQUAMAP.1 Select Settings > My Vessel > Calibrate Water Speed.2 Follow the on-screen instructions.If the boat is not moving fast enough or the speed sensor is not registeringa speed, a message appears.3 Select OK, and safely increase the boat speed.4 If the message appears again, stop the boat, and ensure the speed-sensor wheel is not stuck.5 If the wheel turns freely, check the cable connections.6 If you continue to get the message, contact Garmin product support.Other Vessels SettingsWhen your compatible AQUAMAP is connected to an AIS device or VHFradio, you can set up how other vessels are displayed on the AQUAMAP.Select Settings > Other Vessels.AIS: Enables and disables AIS signal reception.DSC: Enables and disables digital selective calling (DSC).Collision Alarm: Sets the collision alarm.
