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Garmin GPSMAP 421 manual

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Table of contents for the manual

  • Page 1

    GPSMAP 400/500 Series Installation Instructions Y our GPSMAP 400/500 series chartplotter must be properly installed according to the following instructions. Y ou need the appropriate fasteners, tools, and mounts listed in each section. [...]

  • Page 2

    2 GPSMAP 400/500 Series Installation Instructions Selecting a Mounting Location Consider the following when selecting a location to mount your chartplotter: The location provides optimal viewing as you operate your boat. The location allows for easy access to the keypad on the chartplotter . The location is strong enough to support the weight of th[...]

  • Page 3

    GPSMAP 400/500 Series Installation Instructions 3 Installing a T ransducer Consult the chartplotter feature matrix on page 1 to determine if your chartplotter is capable of using sonar . The following transducer installation procedures are only applicable to sonar -capable chartplotters. NOTE : The following procedures contain installation instruct[...]

  • Page 4

    4 GPSMAP 400/500 Series Installation Instructions T o mount the transducer on a transom: 1. Position the transducer mount at the selected transom location. Make sure the transducer is parallel with the water line. Mark the center locations of each hole on the transducer mount. Apply marine sealant to all screw threads to prevent water from seeping [...]

  • Page 5

    GPSMAP 400/500 Series Installation Instructions 5 6.RoutethetransducercabletotheGPSMAP400/500serieschartplotterusingcabletiestosecurethecabletothemotorshaft.Y oucanll theforward-facingportion(exceptthecabletiepocket)ofthetransducermount[...]

  • Page 6

    6 GPSMAP 400/500 Series Installation Instructions Installing the Wiring Harness The chartplotter comes with a wiring harness that connects the chartplotter to power and to optional NMEA 0183 and Garmin CANet devices. If applicable, the wiring harness also connects the chartplotter to a transducer . The wiring harness does not connect to a NMEA 2000[...]

  • Page 7

    GPSMAP 400/500 Series Installation Instructions 7 Connecting the Wiring Harness to a NMEA 0183 Device Y ou can connect the GPSMAP device to other NMEA compatible equipment, such as a DSC or AIS device. Refer to the wiring diagram for connecting the chartplotter to NMEA 0183-compatible devices. Wiring a GPSMAP 400/500 Series Chartplotter to a Standa[...]

  • Page 8

    8 GPSMAP 400/500 Series Installation Instructions Connecting the Wiring Harness to a Garmin CANet Device If your GPSMAP 400/500 series chartplotter is Garmin CANet-compatible, it can receive sonar information from a CANet-compatible Garmin Sounder or Fishnder device. See the chartplotter functionality matrix on page 1 to determine whether your c[...]

  • Page 9

    GPSMAP 400/500 Series Installation Instructions 9 Connecting Cables to the Chartplotter Use the diagrams below to help identify the connectors on the back of your GPSMAP 400/500 series chartplotter . Every possible chartplotter conguration is not represented in the diagrams, but every possible connector type is listed for identication purpose[...]

  • Page 10

    10 GPSMAP 400/500 Series Installation Instructions T o test the transom mount transducer installation: 1. Begin testing the installation at a slow speed. If the sonar appears to be working properly , gradually increase the speed of the boat while observing the operation of the sonar . If the sonar signal suddenly is lost or the bottom return is sev[...]

  • Page 11

    GPSMAP 400/500 Series Installation Instructions 1 1 Sonar Power: 1 kW Transducer , 1,000 W (RMS), 8,000 W (peak to peak); (1 kW transducers are supported by the GPSMAP 525s/526s/535s/536s/545s/546s/555s/556s units only .) Dual Frequency , 500 W (RMS), 4,000 W (peak to peak); Dual Beam, 400 W (RMS), 3,200 W (peak to peak) Frequency: 50/200 kHz (dual[...]

  • Page 12

    For the latest free software updates (excluding map data) throughout the life of your Garmin products, visit the Garmin Web site at www .garmin.com. © 2009 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151 st Street, Olathe, Kansas 66062, USA Garmin (Europe) Ltd. Liberty House, Hounsdown Business Park, Southampton, Hampshire[...]