GPS 72H Owner’s Manual 7Marine NavigationInstalling the Device into theMounting Bracket1. Locate the groove on each side ofthe device case.2. Align the grooves on the devicewith the corresponding tabs onthe device cradle and slide thedevice downward into the bracket.3. Secure the device in the cradle bysliding the locking mount handleto the left.Groove LocknghandleReceiving Marine DataTo receive VMG data, you mustbe connected to a NMEA 0183-compatible water-speed sensor. Toreceive water temperature data, youmust be connected to a NMEA 0183-compatible temperature sensor.NOTE: To receive water speed andtemperature information, connect awater-speed and water-temperaturesensor to the device.