NMEA 2000 cables and connectors - Mid cable - 20 m (gray)

A NMEA 2000® Mid-series cable is a type of cable used to build the NMEA 2000® communication network aboard vessels. The "Mid" series indicates a cable cross-section and connectors designed for the network’s main backbone, capable of supporting longer network lengths and a higher number of devices than the "Micro" series.

The Raymarine DG1-20 cable has a length of 20 meters. This length is designed to extend and improve the reliability of NMEA 2000® communication networks in installations requiring long ranges.

This Raymarine NMEA 2000 cable is gray, which is a standard feature for cables in this series.

The DG1-20 cable is used to create or extend the NMEA 2000® communication network aboard a boat. It enables the interconnection of various marine electronic devices such as sensors, multifunction displays, GPS units, and other compatible devices so they can share data reliably.

Using NMEA 2000®-approved cables and connectors is essential to ensure the integrity and security of the network. NMEA 2000®-certified products undergo over 100 rigorous tests covering safety and network implementation criteria, ensuring the cable will not disrupt the network and data will transmit reliably.

A certified NMEA 2000® cable guarantees several key benefits for your marine network:

Priority message handling: The most important messages always get through.Automatic addressing: Devices can be connected and disconnected without disrupting the network.Product identification: The network recognizes connected devices.Electromagnetic interference (EMI) and noise immunity: Compliance with requirements for stable operation.Electrical isolation: Ensures devices do not interfere with the network.These controls ensure reliable interconnection and backward compatibility.

Yes, the DG1-20 cable is an NMEA 2000® certified component, meaning it has been rigorously tested to ensure reliability and performance in a marine environment. These tests include immunity to electromagnetic interference (EMI) and electrical insulation, ensuring a stable and secure connection even in harsh conditions.

NMEA 2000® cables come in different sizes (Micro, Mid, Mini), which correspond to different cable diameters and connector sizes, suited to various sections of the network:

Micro: Generally used for drops (drop cables) and small networks.
Mid (Medium): Used for the main backbone of medium to large networks, offering better current capacity and longer lengths. This is the DG1-20 cable type.
Mini: Used for the backbones of very large networks, capable of supporting the longest lengths and highest currents.

This cable is compatible with all marine electronic equipment that complies with the NMEA 2000® standard. This includes a wide range of devices such as sensors (depth, speed, temperature), GPS, chartplotters, multifunction displays, autopilots, and engine monitoring systems, regardless of brand, provided they are NMEA 2000® certified.

Yes, the NMEA 2000® standard is designed for interoperability. As long as devices are NMEA 2000® certified, they can be connected and communicate with each other via this Raymarine cable, regardless of brand.

No, the DG1-20 cable is specifically designed for the NMEA 2000® network. NMEA 0183 and NMEA 2000® standards are different and require protocol converters (gateways) to enable devices on each standard to communicate with each other.

Raymarine's SeaTalkNG networks are based on the NMEA 2000® protocol. This standard NMEA 2000® cable can be integrated into a SeaTalkNG network using appropriate connectors or adapters (often SeaTalkNG to NMEA 2000® DeviceNet adapters) to ensure a compatible physical connection.

Yes, in theory, this cable will work with all NMEA 2000®-certified devices. The certification ensures that products comply with the standard's specifications, enabling reliable interconnection and communication within the network.

To install this 20-meter cable into an existing NMEA 2000® network, you must integrate it into the main backbone of your network. It typically connects to T-connectors or backbone couplers to extend the network’s range. Ensure the network is properly terminated at both ends and that power supply is adequate.

Yes, during installation, it is recommended to:

Avoid bending the cable at sharp angles to prevent damage to internal conductors.Securely fasten the cable to prevent movement and abrasion wear.Keep the cable away from sources of electromagnetic interference (motors, high-power radios) as much as possible.Ensure all connections are watertight and secure to prevent water ingress.These precautions contribute to the reliability and longevity of your NMEA 2000® network.

No, NMEA 2000® cables such as the DG1-20 are fitted with standardized connectors (M12 5-pin, DeviceNet type) that simply screw onto T-connectors or compatible devices. No special tool is usually required for connection, though an adjustable wrench can be used to lightly tighten the nuts if needed, without over-tightening.

No, it is not recommended to cut this pre-assembled NMEA 2000® cable. NMEA 2000® cables are supplied with factory-molded connectors that ensure shielding integrity, water resistance, and compliance with the standard. Cutting the cable would negate these advantages and could compromise network reliability. It is preferable to use standard-length cables or bulk connectors and cable for custom lengths if you have the necessary tools and skills.

No, the DG1-20 cable itself does not require a separate power supply. It is part of the NMEA 2000® network, which is powered globally by a single power source (or multiple sources for very large networks) connected to the backbone. The cable carries both data and power for devices connected to the network.

To ensure a proper connection, make sure the connectors are fully inserted and hand-tightened (or lightly with a wrench if needed) on the T-connectors or device ports. A loose connection can cause data loss or interference. The NMEA 2000® certification of the cable guarantees the quality of the connectors for a reliable connection.