The GEONAV can be connected to a Personal Computer by using the optional USB cable. In this case, the unit can use the internal batteries only, and cannot be powered by the ex- ternal power. USB cable WARNING: Power supply1+VDC 2GNDData input ext. GPS3ext. MARINE GPS in + 4ext. GPS in -Data output5Autopilot out + 6Autopilot out -Audio output7Audio out + 8Audio out -USB9USB D + 10USB D -If sent by the boat autopilot, the following NMEA messages aretransmitted to external devices: GGA - RMC - ZDA The GEONAV will add the following messages: APA - APB - XTE - RMB - BWC - GLL - VTGThe data cable is optional. Connections of power supply and data cable The full charge cycle of a battery set totally discharged re- quires at least two hours, depending on the battery type and status. Connections Once the installation is completed, always make sure that all wires areproperly connected since wrong connections may damage the unit. 14 The CompactFlash™ cartridges can be used as a mass-storagewith any PC computer, so can be the cartridge used by the plotter. However, the plotter needs to find some free space in the cartridge in order to work properly. Prior to use a new cartridge, always make sure that there are at least 2.5MB of free space. WARNING WARNING Make sure that the plotter is switched off and perfectly dry. Remove the battery pack, then extract the cartridge. Removing the CompactFlash™ Remove the battery pack (see par. “Battery Pack”).Insert the cartridge into the appropriateslot, with the label side (side with a small arrow) backwards and push it.Replace the battery pack as described inthe paragraph “Battery Pack” and check that it is perfectly closed, in order to avoid any water infiltration. Installing the CompactFlash™ Cartridge Installation CARTRIDGE INSTALLATION : Be careful when handling the cartridge files by using the PC. Windowsallows deleting and moving files easily, therefore pay attention when using Windows Explorer not to erase the content of the \NAVIONIC and \GEONAV folders. Damaging the files stored in such directories may result in loss of data or improper operation of the unit. : Always use CompactFlash cartridges certified by Navionics. Theuse of non-certified cartridges may result in improper operation of the unit. EnglishEnglish 15