Maretron NMEA 2000 User Manual (English)

Jessica SandersJul 31, 2025

What to do if there is no data output on the USB interface of my Maretron NMEA 2000 Gateway?

J
Jeffery BondJul 31, 2025
If you're not getting any data output on the USB interface of your Maretron Gateway, here are a few things to check: * First, make sure that the NMEA 2000 and USB connectors are properly connected and tightened. * Second, verify that the connected NMEA 2000 cable is receiving power. * Third, confirm that the software expecting NMEA 0183 data is selecting the correct serial port. * Finally, open the Device Manager and ensure that the selected port is labeled “Maretron NMEA 2000 USB Gateway” and not “Standard COM port”.

Brand	Maretron
Model	NMEA 2000
Category	Gateway
Language	English

Brand

Maretron

Model

NMEA 2000

1 General

1.3 DSM250 Features

Lists key features of the DSM250 display.

1.4 Quick Install

Outlines the four main steps for installing the DSM250.

2 Installation

2.3 Mounting the DSM250

Describes mounting options: surface, flush, or gimbal.

2.3.1 Surface Mounting the DSM250

Detailed steps for surface mounting the DSM250 display.

2.3.2 Flush Mounting the DSM250

Detailed steps for flush mounting the DSM250 display.

2.3.3 Gimbal Mounting the DSM250

Describes the optional gimbal mounting assembly for the DSM250.

2.4 Connecting the DSM250

How to connect the DSM250 to an NMEA 2000 network via its connector.

3 Operating the DSM250

3.1 Turning the DSM250 On

Steps to power on the DSM250 display and acknowledge the warning.

3.2 Turning the DSM250 Off

Procedure for powering down the DSM250 display using the power key.

3.3 Keypad Essentials

Describes the five-key keypad and its functions in different modes.

4 Important Concepts

4.1 Favorite Screens

Explains the concept of "Favorite Screens" for custom data display configurations.

4.2 Categories and Data Types

Organizes available information types into general categories for easier selection.

4.2.11 Fuel Management

Continues fuel management details including Distance/Time to Empty.

4.3 Alerts

Introduction to the DSM250's alert system.

5 Operating Modes

5.2 Menu Mode

Describes entering and navigating the DSM250's menu system.

5.2.1 Alert Setup Menu

Allows creating, deleting, and editing alerts, and changing vessel operating mode.

5.2.3 Configuration Menu

Allows changing configuration of Maretron NMEA 2000 devices.

5.2.3.1 Device Configuration

Details on calibrating and configuring other devices on the NMEA 2000 bus.

5.2.3.2 Device Selection

Enables/disables data display from individual NMEA 2000 devices.

5.2.4 Display Settings Menu

Allows changing parameters related to display operation.

5.2.4.1 Advanced Configuration

Changes complex parameters within the device, for advanced users.

5.2.6 Favorite Screens Setup Menu

Allows configuration of sixteen favorite screens.

5.2.7 Units Menu

Allows setting the desired display units for the DSM250.

5.3 Control Mode

Allows entry for performing certain control and reset functions.

6 Device Configuration

6.1 Airmar Depth/Speed/Temperature Transducers

Configuration and calibration for Airmar transducers.

6.3 Maretron ACM100 Configuration

Configuration for the ACM100 Alternating Current Monitor.

6.5 Maretron DCM100 Configuration

Configuration for the DCM100 Direct Current Monitor.

6.9 Maretron DST100 Configuration

Configuration for DST100 Depth/Speed/Temp transducer.

6.11 Maretron EMS100 Configuration

Configuration for the EMS100 Engine Monitoring System.

6.14 Maretron GPS100 Configuration

Configuration for the GPS100 GPS Antenna/Receiver.

6.17 Maretron J2K100 Configuration

Configuration for the J2K100 J1939 to NMEA 2000 Gateway.

6.23 Maretron SSC200 Configuration

Configuration for the SSC200 Solid State Compass.

6.23.5 Magnetic Deviation Calibration

Performs magnetic deviation calibration on the SSC200 compass.

6.24 Maretron TLA100 Configuration

Configuration for the TLA100 Tank Level Adapter.

6.24.4 Tank Levels Calibration

Calibrates the tank level sender for accurate readings.

6.24.4.1 Custom Calibration

Provides accurate tank level readings for non-rectangular tanks.

6.25 Maretron TLM100 Configuration

Configuration for the TLM100 Tank Level Monitor.

6.25.4 Tank Levels Calibration

Calibrates the tank level sender for accurate readings.

6.25.4.1 Custom Calibration

Provides accurate tank level readings for non-rectangular tanks.

6.28 Maretron TMP100 Configuration

Configuration for the TMP100 Temperature Module.

6.30 Maretron VDR100 Configuration

Configuration for the VDR100 Vessel Data Recorder.

6.31 Maretron WSO100 Configuration

Configuration for the WSO100 Wind/Weather Sensor.

6.31.3 Installation Offset Calibration

Compensates for misalignment of the WSO100 sensor orientation.

7 Data Display Types

7.14 Switch/Breaker Display

Controls loads via DCR100, OctoPlex, or other NMEA 2000 load controllers.

8 Alerts

8.2 Accepting or Cancelling an Alert

Operators can accept or cancel active alerts.

8.3 Adding an Alert

Procedure to create new alerts by selecting parameters and types.

8.3.7 Trigger Configuration

Describes the conditions under which an alert will be triggered.

8.3.7.1 Trigger Type is High Alert

Triggers alert when parameter value rises above a determined threshold.

8.3.7.2 Trigger Type is Low Alert

Triggers alert when parameter value falls below a determined threshold.

8.3.7.3 Trigger Type is Data Unavailable Alert

Alerts when a parameter is not received or flagged as unavailable.

8.3.7.7 Trigger Type is Outside Radius Alert

Alerts when vessel moves outside a programmable distance from a reference point.

8.3.7.8 Trigger Type is Inside Radius Alert

Alerts when vessel enters a programmable distance (radius) of a reference point.

8.3.7.9 Trigger Type is Anchor Alert

Signals alert when vessel drifts outside a programmable distance from anchor point.

8.3.7.10 Trigger Type is GPS Quality Alert

Alerts if GPS position quality falls below a specified level.

8.3.7.11 Trigger Type is Direction Alert

Indicates if heading or wind direction changes beyond a programmable amount.

8.3.7.12 Trigger Type is Time Alert

Triggers alerts at a predetermined time or periodically.

8.3.11 SMS (Text) Settings…

Programs up to eight phone numbers for sending alert messages.

8.5 Editing an Alert

Allows modification of existing alert parameters.

8.6 Setting the Vessel Operating Mode

Sets the vessel's operating mode, potentially affecting alert behavior.

8.7 SMS (Text) Phone Book

Manages phone numbers for sending SMS alert messages.

Maretron NMEA 2000 User Manual

Table of Contents

Questions and Answers:

Maretron NMEA 2000 Specifications

Summary