GND 10 Nexus Status Light is Not Flashing Green

See GND 10 to see device information.

See GND 10 Manuals to view manuals.

• The GND 10 has 3 primary functions:

  1. Convert the gWind transducer Nexus signal to a NMEA 2000 PGN information to be distributed on the NMEA 2000 Network

  2. Provides users with a device to change Wind Angle, Speed Filters, and Wind Angle Offset

  3. Provides users with the ability to interface with a Personal Computer (PC) applications such as Nexus Race, Expedition, Adrena or SeaTrack to communicate sailing specific function between Nexus and NMEA 2000 Networks

• The GND 10 is powered by the NMEA 2000 Network and has a NMEA 2000 Load Equivalency Number (LEN): 4

• The NMEA 2000 connection provides DC power and NMEA communication to/from the GND 10

• The two Nexus ports/connections provide an interface between the gWind transducer and the GND 10 or the Nexus ports can be used to integrate with other Nexus devices

• The USB connection provides interface with a PC for the applications listed above

• There are three different status lights on the GND 10; see null  for more information

                                                      GND 10 Status Light Locations

NOTE:  The Field Installable Connector that is connected to the GND 10 Nexus port, is the female portion of the connector.  The male connector can not be used on the GND 10 Nexus ports.

Description:

See Field Installable Connectors to see more information.

• A complete Field Installable Connector consists of one each male and one each female connectors

  • The male and female connectors would be used to create a "removable junction" on the Mast cable that would be between the GND 10 and gWind transducer

    • This would enable a user to disconnect the male and female portion of the connectors and allow the Mast to be removed without removing the entire Mast cable from the mast or from the interior of the vessel

  • The male portion of a Field Adaptable Connector is only used with the female connector when making a secondary junction on the Mast cable

See images below "Male and Female Field Installable Connectors" and "Nexus Field Installable Connector Schematic" to identify the different components of the connectors

           Male and Female Field Installable Connectors                                                                Nexus Field Installable Connector Schematic

See Field Installable Connectors to see more information.

Uses:

• A complete Field Installable Connector consists of one each male  and one each female connectors

  • The male portion of a Field Adaptable Connector is only used when making a secondary junction on the Mast cable

  • They would be used to provide a means to create a "removable junction" on the Mast cable that would be between the GND 10 and gWind transducer.

  • This would enable a user to disconnect the male and female portion of the connectors and allow the Mast to be removed without removing the entire Mast cable from the mast or from the interior of the vessel

Assembly:

NOTE:  To reference the different components/parts of the Field Connector, use the images above: "Male and Female Field Installable Connectors" and "Nexus Field Installable Connector Schematic" 

• To install the Field connector to the GND 10 Nexus port

  • Align the female connector to the GND 10 pins

  • Hold the Black sleeve securely (Do NOT Spin the the Black Sleeve)

  • Thread the Silver/Knurled retaining collar clockwise, threading it onto the GND 10 Nexus port

• To remove the Field connector from the GND 10 Nexus port

  • Hold the Black sleeve securely (Do NOT Spin the the Black Sleeve)

  • Thread the Silver/Knurled retaining collar counterclockwise, threading it off the GND 10 Nexus port

NOTE:  When "Installing or Removing" the Field Connector from the GND 10 Nexus port, thread/spin the Silver/Knurled retaining collar onto the GND 10 Nexus port.

NOTE:  Do Not Spin, Thread, or Twist ANY other part of the Field connector other than the Silver/Knurled retaining collar. Otherwise the wire-to-terminal connections inside the connector may become disconnected inside the connector.

• To Disassemble the Field Connector

  • Remove the connector from the GND 10 (Ensure the wires are not twisted or damaged while performing these steps)

  • Hold the Black Sleeve securely (do NOT Spin the the Black Sleeve)

  • Spin the Pressing Screw until it is unthreaded from the Black Sleeve

  • Slide the Pressing Screw, Pinch Ring, and Seal along the cable, back and away from the connector

  • Hold the Black 10-point nut (Do Not Spin the Black10-point nut)

  • Spin the Black Sleeve, unthreading it from the Black 10-point nut

  • Slide the Black Sleeve back along the cable, exposing the wire and terminals  

• To Assemble the Field Connector (Ensure the wires are not twisted or damaged while performing these steps)

  • Slide the Black Sleeve along the cable to meet the threads on the 10-point nut 

  • Hold the Black 10-point nut (Do Not Spin the Black10-point nut)

  • Spin the Black Sleeve, threading it onto the 10-point nut

  • Slide the Pressing Screw, Pinch Ring, and Seal along the cable, inside the Black Sleeve.  The Pressing screw should meet the threads of the Black Sleeve

  • Hold the Black Sleeve securely (Do NOT Spin the the Black Sleeve)

  • Spin the Pressing Screw until it is threaded into the Black Sleeve

The first step is to always ask, "Has there been ANY maintenance, changes to the vessel, water intrusion, weather events, movement/placement of "stuff" on the vessel, anyone that may have changed a device setting, or has anyone been on the vessel that may have changed something or used the vessel?"

• If yes, then look in those areas first; it is likely that a NMEA 2000 cable or a device was moved, re-configured, broken or loosened.  It is common for people to place bags, equipment, or personal stuff in equipment/storage bays that contain devices, cables, and electronics; as a result they may have altered the device or cables 

• Visually inspect and verify the wind sensor is freely moving in the wind

• Inspect any cable connections related to the wind sensor and instrument display to ensure that there are no loose or chaffed wires or connectors

• When trying to troubleshoot the wind sensor, make sure the display is set to apparent wind angle/speed (AWA/AWS)

• Power cycle the display and NMEA 2000 Network

• Ensure the NMEA 2000 device Load Equivalent Numbers (LEN) do not exceed the NMEA 2000 network capability for the network

• Ensure the System Software is up to date

• Identify if the GND 10 NMEA 2000 and NEXUS status light color and if it is solid or flashing (See GND 10 Owners/Installation Manual for "Status LEDs" code or select this link GND 10 Blink Codes 

• Unplug the Nexus mast cable from the GND 10 NEXUS port and plug it into the other NEXUS port, (may require GND 10 to be power cycled)

• Check inside the Nexus Field Installable Connector for "wire-to-terminal" assignment and security and for electrical opens / continuity / shorts to other wires in the connector / cable

  • Requires an Allen Wrench, .90mm hex key (the Allen wrench came with the connector, however it may also be found online or possibly a RC Hobby stores)

NOTE:  The list below (1-5) is in no particular order and does not represent/list the most likely to least likely reason for the failure.  Each item is an independent troubleshooting step.  

1. Troubleshooting gWind transducer 

2. Troubleshooting GND 10 

3. Troubleshooting Field Installable Connector 

4. Troubleshooting Mast cable 

5. Troubleshooting NMEA 2000

The dropdowns below have more troubleshooting steps and details related to each of the possible reasons for the Nexus Status light NOT flashing green.

WHY:  gWind transducer has failed, loss of data flow via the Mast cable to the GND 10, or is missing pieces; resulting in loss of Nexus signal flow to the GND 10.

See gWind Transducer to see more information on the gWind wired transducer to include accessories and manuals.

See How to Install a gWind Transducer the video also includes how to assemble the Nexus Field Connector.

• Ensure the following with the gWind transducer:

  • It is not broken/missing pieces (gWind transducer, Propeller, Mount assembly, Nexus Mast cable) 

  • While the vessel is at the dock, the gWind is aligned/pointing to the TWD and moving freely with the changes in wind direction

    • While the vessel is at the dock (not moving) the AWA is the same as the TWA and TWD

  • Propeller is spinning freely with the the changes in wind direction and speed

  • The mount assembly is secure and aligned properly

  • The purple connector from the gWind to the Nexus Mast cable is connected and not damaged

• If any of the above is is not configured correctly or is not operating correctly, take the appropriate action below 

  • If needed, replace the appropriate part (gWInd transducer, gWind propeller, gWind mount assembly, Nexus Mast cable)

  • If needed, install and secure the gWind correctly to the masthead, mount assembly and ensure the Nexus Mast cable is connected to the purple connector from the gWind transducer

NOTE:  The gWind transducer can not be tested on the vessel with a Multimeter. The data is too dynamic and any readings would not be of any value or useable to determine if the gWind was operational

• If possible, temporarily install a functional part/device to see if the problem goes away

  • If the functional part/device does not fix the problem and all the items above are operationally correct, proceed to the next troubleshooting steps in the dropdowns below

WHY:  GND 10 has failed or the Nexus port on GND 10 is damaged due to corrosion, bent pins, or the Nexus connector was improperly installed.

• Ensure the NMEA 2000 network is operating correctly

  • See NMEA 2000 Troubleshooting and Technical Reference for GARMIN NMEA 2000 Products

• Check the null 

• Check the GND 10, Nexus cable, and NMEA 2000 drop cable for bent pins, corrosion or incorrect cable installation

• Ensure the GND 10 has the most current software installed

  • See System Software to find the current software for the GND 10.  The GND 10 software is bundled with the software associated to the Garmin chartplotter that is installed

  • See Garmin Marine Device Software Updates to see how to accomplish a Marine software update

• Verify no less than 11vdc on a GND 10 Nexus port between the Pins 1 & 3 (test both ports 1 & 2 separately).  The NMEA 2000 connector must be connected to the GND 10 and the NMEA 2000 power must be on See the image below "GND 10 Nexus Port Pin Assignments" for pin assignments

                                     GND 10 Nexus Port Pin Assignments

• If possible temporarily install a functional GND 10 and ops check the system

• If the functional part/device does not fix the problem and all the items above are operationally correct, proceed to the next troubleshooting steps in the dropdowns below

WHY:  The Field Installable Connector was not installed or assembled correctly, the wires inside the connector are damaged, pins are damaged, or the internal "wire-to-terminal" connection have come off, loose, are electrically shorted/open, or the wire to pin assignments are incorrect

NOTE:  Refer to the dropdown Field Installable Connector Overview: Description, Uses, and Components for more information.

NOTE:  If there is another (2nd) Nexus Field Installable connector installed "in-between" the GND 10 and the gWind transducer on the Nexus mast cable, ensure to also troubleshoot that Nexus Field Installable connector. 

• Remove the Female Field Installable Connector from the GND 10 Nexus port

  • Ensure to grasp and turn the knurled/silver potion of the Nexus connector when removing the connector from the GND 10.  Do not twist/turn the black Sleeve portion of the Nexus connector

• Inspect the outside of the Female Nexus connector and GND 10 for corrosion, damage, bent pins or cracked/broken components

  • Clean, repair or replace as needed

• Re-install the Female Nexus connector on each of the GND 10 Nexus ports and check the Nexus status light while it is installed on each Nexus port

  • If the "Green" Nexus status light is flashing, check wind information on the chartplotter or display for accuracy

  • If the "Green" Nexus light is NOT flashing or the wind information is not correct, proceed with troubleshooting steps below

• Remove and partially disassemble the Female Nexus connector

  • The goal is to gain enough access to see the inside of the connector specifically the "wire -to-terminal" connections and wires by moving the Black Sleeve portion of the connector back and away from the silver/knurled portion exposing the wires and terminals inside the connector from the GND 10 

  • Do not remove the wires from the terminals, unless there is an obvious problem with the connection

  • Watch this video to see how to assemble a Nexus connector Installing a gWind Transducer 

NOTE:  A .90mm hex head Allen wrench is needed to remove the wires from the terminal lugs inside the Field Installable Connector.

• Inspect the inside of the Field Connector "wire-to-terminal" connections and wires for correct configuration, corrosion, wire damage, security, and electrical integrity

  • See the images below for "wire-to terminal" assignments

                                                               "FEMALE" Nexus Connector Wire Assignment                                                              "MALE" Nexus Connector Wire Assignment

• With the Black sleeve still pulled back on the Female Nexus connector, re-install the knurled/silver portion on the GND 10 Nexus ports

  • Check the Nexus light status

NOTE:  Checking the Nexus status lights when the connector is not completely assembled may reveal the wires are being twisted, coming off the terminal or there is an open/short that occurs when the connector is fully assembled.

• If the Nexus status light flashes green then the Nexus information is present at the GND 10 Nexus plug

• Re-assemble the Nexus connector and re-install the Nexus connector on the GND 10 Nexus plug and check the Nexus status light

• If the Nexus light is NOT flashing green,  no Nexus light at all, or the Nexus Status light is red

  • The most likely problem is the wiring in the Nexus connector is not secure

  • There is an open/short wire in the Nexus Mast cable

  • The gWind is not connected to the Mast cable

  • gWind has failed

WHY:  Nexus Mast cable to the gWind transducer is damaged, the purple connector at the gWind transducer is damaged, or Purple connector is disconnected

• Prior to performing electrical checks:

  • Disconnect, inspect and clean the Nexus Mast cable purple connector (purple connector is located at the end of the Nexus Mast cable near the gWind transducer)

  • Re-install the GND 10 Nexus connector and the purple connector and verify Nexus status light

• If the Nexus status light is still not flashing green, disconnect the Nexus connector and purple connector and perform electrical "Continuity and Short" check below

NOTE:  Refer to the Mast Cable "Mast Cable Purple Connector Pin Assignments " and the "Female Field Installable Connector Pin Assignment" images below.

NOTE:  If there are multiple Field Installable Connectors installed, refer to the correct "Male or Female"  Field Installable Connector Pin Assignment to determine pin out locations.

                                   Mast Cable Purple Connector Pin Assignments                                      Female Field Installable Connector Pin Assignment         Male Field Installable Connector Pin Assignment

CONTINUITY CHECK- Verify that electrical "Continuity" exists between the Field Installable Connector and the purple connector at the end of the Nexus mast cable.

• Disconnect the female Field Installable Connector from Nexus port on the GND 10

• Disconnect the purple connector at the end of the Mast cable, located near the gWind transducer

• Using an Ohm Meter: Verify there is "Continuity" between the following pins on the FEMALE Field Installable Connector and the "Purple" connector on the Mast cable

  • Female Field Connector pin 1 to Purple pin 1 

  • Female Field Connector pin 2 to Purple pin 2

  • Female Field Connector pin 3 to Purple pin 5

  • Female Field Connector pin 4 to Purple pin 4 

• If continuity does not exists between the defined pins, there is an open electrical circuit or broken wire in the Mast cable or connectors

  • Repair or replace Field Installable Connector or Nexus Mast cable

SHORT CHECK - Verify there is NOT an electrical short between the female Field Installable Connector and the purple connector at the end of the mast cable. 

• Disconnect the female Field Connector from Nexus port on the GND 10

• Disconnect the purple connector at the end of the Mast cable, located near the gWind transducer

• Using an Ohm Meter: Verify there is no continuity between the following pins on the female Field Installable connector and the purple connector on the Mast cable

  • Female Field Connector Pin 1 to Purple pin 2, 3 and 4

  • Female Field Connector Pin 2 to Purple pin 3 and 4

  • Female Field Connector Pin 3 to Purple pin 4

• If a short is present in the combination of pin-to-pin checks, the Field Installable Connector or Mast cable has an electrical short between the pins / terminators and the wires / connectors in the mast cable

  • Repair or replace Field installable connector or Mast cable

• If there is NOT a short between the pin-to-pin checks and the Nexus Status light is NOT flashing green

  • It is highly likely the gWind transducer or the GND 10 has failed, replace one device at a time to isolate and ensure the issue is resolved

WHY:  The NMEA 2000 power is inadequate, resulting in not enough voltage distributed inside/throughout the GND 10 to support NMEA 2000 and Nexus operations.

• See NMEA 2000 Troubleshooting for NMEA 2000 information 

NOTE:  If the NMEA 2000 power at the GND 10 is less than 11vdc, the GND 10 internal operations will/may only perform basic functions.  Meaning the NMEA 2000 and Nexus operations may not be performed.

• If NMEA 2000 power at the GND 10 is at or below 11vdc and the GND 10 is not providing NMEA or Nexus information

  • Re-locate the GND 10 closer to the NMEA 2000 power cable and check the GND 10 operations/functionality