Garmin GMI 20 Marine Instrument Installation Instructions
Contents
1. it is recommended to use a countersink bit to drill a clearance counterbore through only the top gel coat layer This will help to avoid any cracking in the gel coat layer when the screws are tightened Stainless steel screws may bind when screwed into fiberglass and overtightened Garmin recommends applying an anti seize lubricant to the screws before installing them The included template and hardware can be used to flush mount the device in your dashboard To mount the device so the screen is flat with the dashboard you must purchase a flat mount kit from your Garmin dealer 1 Trim the flush mount template and ensure it will fit in the location where you plan to mount the marine instrument The flush mount template is included in the product box 2 Remove the liner from the adhesive on the back of the template and apply it to the location where you plan to mount the marine instrument 3 Ifyou plan to cut the hole with a jigsaw instead of a 90 mm 3 5 in hole saw use a 10 mm g in drill bit to drill a pilot hole to begin cutting the mounting surface 4 Using the jigsaw or the 90 mm 3 5 in hole saw cut the mounting surface along the inside of the dashed line indicated on the flush mount template 5 If necessary use a file and sandpaper to refine the size of the hole 6 Place the marine instrument into the cutout to confirm that the mounting holes on the template are in the correct locations 7 Ifthe mounting holes a2. DOP D Marine instrument with a NMEA data cable not included 129540 GNSS satellites in view D 12 Vdc power source 130306 Wind data Garmin HVS GPS antenna 130310 Environmental parameters 130311 Environmental parameters 130312 Temperature Type PGN Description 130313 Humidity 130314 Actual pressure 130576 Small craft status NMEA 0183 Information When connected to an optional NMEA 0183 compatible device the instrument can receive these NMEA 0183 sentences Sentence Description AAN Auto anchor data BOD Bearing origin to destination BWC Bearing and distance to waypoint DBT Depth below transducer DTM Datum being used DPT Depth GGA Global positioning system fix data GLL Geographic position latitude and longitude GRMB GPS data GRME GPS position error data GSA GNSS DOP and active satellites GSV GNSS satellites in view HDG Heading deviation and variation HDM Heading magnetic HDT Heading true MDA Meteorological composite MTW Water temperature MWD Wind direction and speed MWV Wind speed and angle RMB Recommended minimum navigation information RMC Recommended minimum specific GNSS data THS Heading sensor data VHW Water speed and heading WPL Waypoint location XTE Cross track error You can pur
3. A GARMIN GMI 20 Installation Instructions To obtain the best possible performance install this marine instrument according to these instructions If you experience difficulty during the installation contact Garmin Product Support or seek the advice of a professional installer This instrument communicates with NMEA 2000 sensors and devices and shows information such as speed heading water depth and fuel information when connected to the appropriate sensors The instrument can also communicate with a NUEA 0183 device using an optional data cable Important Safety Information See the mportant Safety and Product Information guide in the product box for product warnings and other important information Always wear safety goggles ear protection and a dust mask when drilling cutting or sanding NOTICE When drilling or cutting always check what is on the opposite side of the surface Registering Your Device Help us better support you by completing our online registration today e Go to http my garmin com e Keep the original sales receipt or a photocopy in a safe place momacung Garmin Product Support Go to www garmin com support and click Contact Support for in country support information e Inthe USA call 913 397 8200 or 800 800 1020 e Inthe UK call 0808 2380000 e In Europe call 44 0 870 8501241 Mounting Considerations NOTICE This device should be mounted in a locatio
4. A 2000 network If are replacing a legacy Garmin marine instrument that currently uses a NMEA data cable you do not need to purchase a new data cable but you might need to replace the quarter turn locking ring with a threaded locking ring See your local Garmin dealer or www garmin com for more information The installation instructions provided with your NMEA 0183 compatible device should contain the information you need to identify the transmitting Tx A and B wires When connecting NMEA 0183 devices with two transmitting wires it is not necessary for the NMEA 2000 bus and the NMEA 0183 device to connect to a common ground When connecting a NMEA 0183 device with only one transmitting Tx wire the NMEA 2000 bus and the NMEA 0183 device must connect to a common ground For extended runs you should use at least 0 33 mm 22 AWG wire You must solder and seal all connections with heat shrink tubing Wire Color Wire Function Red A red wire is present only on some variations of the data cable and should not be connected Black Accessory This wire is used only when connecting the marine instrument to a Garmin HVS GPS antenna Yellow Accessory This wire is used only when connecting the marine instrument to a Garmin HVS GPS antenna Blue Tx A This wire is used only when connecting the marine instrument to a Garmin HVS GPS antenna White Tx B This wire is used only when connecting the
5. chase complete information about National Marine Electronics Association NMEA format and sentences from NMEA Seven Riggs Avenue Severna Park MD 21146 USA www nmea org Garmin International Inc 1200 East 151st Street Olathe Kansas 66062 USA Garmin Europe Ltd Liberty House Hounsdown Business Park Southampton Hampshire S040 9LR UK Garmin Corporation No 68 Zhangshu 2nd Road Xizhi Dist New Taipei City 221 Taiwan R O C 2013 Garmin Ltd or its subsidiaries Garmin the Garmin logo and GPSMAP are trademarks of Garmin Ltd or its subsidiaries registered in the USA and other countries GMI is a trademark of Garmin Ltd or its subsidiaries These trademarks may not be used without the express permission of Garmin NMEA NMEA 2000 and the NMEA 2000 logo are registered trademarks of the National Marine Electronics Association Bo amp CE www garmin com support
6. e Tx wire eee th NMEA 2000 load equivalency 6 300 mA at 9 Vdc number LEN NMEA 2000 PGN Information Type PGN Description Transmit and receive 059392 ISO acknowledgment 059904 ISO request 060928 ISO address claim 126208 NMEA Command request and acknowledge group function 126464 Transmit PGN list group function 126996 Product information Receive 126992 System time Marine instrument with a NMEA data cable not included NMEA 2000 network must connect to the same ground as the NMEA data cable 12 Vdc power source NMEA 0183 compliant device 127245 Rudder 127250 Vessel heading 127488 Engine parameters Rapid update Item Garmin Wire Garmin Wire NMEA 0183 Device Function Color Wire Function 127489 Engine parameters Dynamic QO N A N A Power pa INA N A Power ground 127493 Dee PAra Dynamic Rx B Green Data ground 127498 engine parameters Static RXxA Brown TX 127505 Fluid level 127508 Battery status This diagram is an example of a connection to a Garmin HVS 128259 Speed Water referenced GPS antenna 128267 Water depth 129025 Position Rapid update 129026 COG and SOG Rapid update 129029 GNSS position data 129044 Datum 129283 Cross track error 129284 Navigation data 129285 Navigation route and waypoint info 129539 GNSS dilution of precision
7. marine instrument to a Garmin HVS GPS antenna Wire Color Wire Function Item Marine Instrument Wire Color Antenna Wire Color Brown Rx A 0 N A Red Green Rx B 2 Black Black i Yellow Orange NMEA 0183 Connection Diagrams k O Blue White This diagram is an example of a connection to a standard l NMEA 0183 device with two Tx wires White White orange O Brown Gray f Q Green White red 1 Specifications 0 o0 O Specification Measurement ee Dimensions without sun cover 110 x 115 x 30 mm 4 33 x 4 53 x Item whic dnl HxWxD 1 18 in Manne det U MeO Pe caer CADIE OEG Dimensions with sun cover 115 x 120 x 35 5 mm 4 53 x 4 72 x 12 Vdc power source HxWxD 1 40 in NMEA 0183 compliant device Weight without sun cover 247 g 8 71 oz Item Garmin Wire Garmin Wire NMEA 0183 Device Weight with sun cover 283 g 9 98 oz Function Color Wire Function Temperature range From 5 to 158 F from 15 to 70 C Power Compass safe distance 209 mm 8 25 in Data ground Case material Polycarbonate waterproof to IEC Tx A 60529 IPX7 standards RxB Green Tx B Power usage 2 5 W max This di le of fad pandas Unit max voltage 32 Vdc IS GlagraM IS an Example ot a connection to a stangar NMEA 2000 i tvolt 9 16 Vd NMEA 0183 device with on
8. n that is not exposed to extreme temperatures or conditions The temperature range for this device is listed in the product specifications Extended exposure to temperatures exceeding the specified temperature range in storage or operating conditions may cause device failure Extreme temperature induced damage and related consequences are not covered by the warranty Using the included hardware and template you can flush mount the device in the dashboard If you want to mount the device using an alternative method where it appears flat with the front of the dashboard you must purchase a flat mount kit professional installation recommended from your Garmin dealer When selecting a mounting location observe these considerations e The mounting location should be at or below eye level to provide optimal viewing as you operate your vessel e The mounting location should allow easy access to the keys on the device e The mounting surface must be strong enough to support the weight of the device and protect it from excessive vibration or shock e To avoid interference with a magnetic compass the device should not be installed closer to a compass than the compass safe distance value listed in the product specifications e The area behind the mounting surface must allow room for the routing and connection of the cables Mounting the Device NOTICE If you are mounting the device in fiberglass when drilling the four pilot holes
9. ou are installing the included NMEA 2000 power cable you must connect it to the boat ignition switch or through another in line switch NMEA 2000 devices will drain your battery if the NMEA 2000 power cable is connected to the battery directly The marine instrument connects to a NMEA 2000 network on your boat using the port labeled NMEA 2000 The NMEA 2000 network provides power to the marine instrument and data from NMEA 2000 compatible devices such as a wind sensor The included NMEA 2000 cables and connectors allow you to either connect the device to your existing NMEA 2000 network or create a basic NMEA 2000 network if needed If you are unfamiliar with NMEA 2000 you should read the NMEA 2000 Network Fundamentals chapter of the Technical Reference for NMEA 2000 Products To download the reference click the Manuals link on the product page for your device at www garmin com Item Description Wind sensor Marine instrument Ignition or in line switch NMEA 2000 power cable NMEA 2000 drop cable 12 Vdc power source NMEA 2000 terminator or backbone cable NMEA 2000 T connector QQ S E NMEA 2000 terminator or backbone cable NMEA 0183 Connection Considerations The marine instrument can receive NMEA 0183 data from one device using a NMEA data cable not included but it cannot transmit data from the NMEA 0183 device to the NME
10. re not correct mark the correct locations of the mounting holes Remove the marine instrument from the cutout 9 Drill the 3 2 mm 1 g in pilot holes If you are mounting the marine instrument in fiberglass use a countersink bit as advised in the notice 10 Remove the remainder of the template 11 If you will not have access to the back of the device after you mount it connect all necessary cables to the device before placing it into the cutout NOTE To prevent corrosion of the metal contacts cover unused connectors with the attached weather caps 12 Place the marine instrument into the cutout 13 Securely fasten the marine instrument to the mounting surface using the supplied screws If you are mounting the marine instrument in fiberglass use a anti galling lubricant as advised in the notice 14Snap the bezel into place Oo April 2013 190 01609 02_0A Printed in Taiwan Connection Considerations The marine instrument connects to power and to data sources through a NMEA 2000 network In addition the marine instrument can connect to a NMEA 0183 data source using a data cable not included NMEA 2000 Connection Considerations NOTICE If you have an existing NMEA 2000 network on your boat it should already be connected to power Do not connect the included NMEA 2000 power cable to an existing NMEA 2000 network because only one power source should be connected to a NMEA 2000 network If y
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