Garmin GPSMAP 198C Owner's Manual

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Garmin GPSMAP 198C Owner's Manual Manual pdf 78 page image

72 GPSMAP 198C Sounder Owner’s ManualM AIN MENU > C OMM TABComm (Communications) TabThe Comm tab controls the input/output format used whenconnecting your GPSMAP 198C Sounder to external NMEAdevices, a DGPS beacon receiver, a personal computer, or anotherGarmin unit.NOTE: If a DGPS receiver is used, WAAS capability isautomatically turned to Off. See pages 99 and 100 for wiringand NMEA version information.The unit supports two input/output ports.Port 1• Garmin Data Transfer—is the proprietary format usedto upload/download MapSource data, exchange waypoint,route, track, almanac, and proximity data with a PC oranother Garmin unit. When you select Garmin Data Transfer,there are 11 Transfer Modes to choose from: Host, RequestAlmanac, Request Proximity, Request Routes, RequestTracks, Request Waypoints, Send Almanac, Send Proximity,Send Routes, Send Tracks, and Send Waypoints.• NMEA In/NMEA Out—supports the input/output ofstandard NMEA 0183 data, and sonar NMEA input supportfor the DPT, MTW and VHW sentences.• None—provides no interfacing capabilities.Port 2• Garmin DGPS—supports connections with a Garmin DGPSbeacon receiver.• Other DGPS—supports DGPS input using a standardRTCM format, without any output capabilities.• NMEA In/NMEA Out—supports the input/output ofstandard NMEA 0183 data, and sonar NMEA input supportfor the DPT, MTW and VHW sentences. You can also adjustthe NMEA output.• RTCM In/NMEA Out—supports Differential GPS (DGPS)input using a standard RTCM format and also providesNMEA 0183 output.• None—provides no interfacing capabilities.