GPS module:The screen provides means to switch the GPS Module between the „<μBlox>‟ or „‟.You can force the AIS to search again for the GPS Module installed. Selecting the wrong typeof GPS module may result in invalid position information and/or malfunction so that your AIScan not operate correct. Select and with [Left] & [Right] arrows the option tosearch which module is installed Please mention the system will restart automatically whensaving these setting later. .Position Pinning:The screen provides means to switch the position pinning function of the internal GPSreceiver on and off. For vessels operating with SOG < 0,3 knots it is recommended to switchposition pinning off. Otherwise the internal GPS receiver may deliver wrong positioninformation.The data input field is fitted with the recommended default value (). The M6 button isused for toggling between the two modes of position pinning; the M5 button is used for savingthe settings.NOTE: The system will be restarted after saving the settings.<μBlox> GPS Receiver:This GPS receiver is installed in later versions of NAUTICAST™. It is designed for use withpassive and active antennas. The recommended GPS antenna should have a minimum gainof 15 - 20 dB to compensate signal loss in RF cable. The supplied ACR – GPS antenna is aactive type and has a gain of +30dB it is able to dive cable lengths of 45 meters. Antennaswith more than 50 dB should not be used. This high signal level can damage the GPSreceiver. GPS receiver:As described above, the resulting installation gain should be between 0 to 10 dB. If theinternal GPS receiver will be overloaded with more than 18dB, then it could be damaged.Attenuation valuesType Name Part number Total gainGPS-Antenna GPS-Antenna Marina 2 2625 +35dBiGPS-Antenna Procom GPS4 2622 +35dBiComb. GPS/VHF-Antenna Comrod AC-17 2624 +20dBi (GPS amp gain)Cable RG214 2630 -15,75 dBAdapter GPS-VHF Adapter cable with1m RG58 / TNC connector2612 -1dBConnector TNC plug RG214 crimp 2633 -0,1dBExampleProcom GPS4 + 35,00dBi11m RG214 0,35 dB/m - 3,85dBmaybe 2 TNC plugs - 0,20dBNauticast with Adapter P/N 2610 -1,00dBTotal 29,95dBNecessary minimum attenuation (=> 12dB Attenuator needed!) ≥11,95dBGPS Input ≤18,00dBY1-03-0204 Rev. L35
