Displej GNX™ 20 - 4"

Yes, the GNX 20’s display is specifically designed for excellent readability in bright daylight. It features a large 4-inch LCD screen with black numbers on a high-contrast light background. Additionally, its glass is treated with an antireflective coating to minimize glare and ensure optimal visibility even in full sunlight.

The GNX 20 display is highly versatile and can show over 50 different navigation parameters from your NMEA 2000 network. Among the most common data, you will find:

Basic data: Speed (through water and over ground), depth, heading.Wind data: Apparent and true wind (speed and angle).GPS data: Position, COG (course over ground), SOG (speed over ground).Engine data: RPM, temperature, pressure (if connected to the network).Navigation information: Waypoint data, cross-track error (XTE).

The main difference between the GNX 20 and the GNX 21 lies in the type of LCD display:

GNX 20: It uses a standard LCD screen with large black numbers on a white or colored background. This is the most common display type.
GNX 21: It uses a reversed LCD screen (or negative) with white or colored numbers on a black background.
The choice depends on personal preference and the lighting conditions at your helm station.

Yes, the GNX 20 display is designed for the marine environment and is waterproof to IPX7 standards. This means it can withstand accidental immersion in 1 meter of water for 30 minutes.

The GNX 20 is compatible with the following networks:

NMEA 2000: This is its primary connectivity. It connects directly to an NMEA 2000 network to receive and display data from all compatible sensors.
NMEA 0183: It can receive data from an NMEA 0183 device, but cannot transmit data (receive-only).
Nexus: It is also compatible with Nexus instrument systems via the use of a GND 10 gateway (sold separately).

Yes, it is possible to connect the GNX 20 display to a Nexus instrument network. To do this, you must use the Garmin GND 10 gateway (sold separately), which bridges the Nexus network and the NMEA 2000 network on which the GNX 20 operates.

The GNX 20 display is designed for flush-mount installation for a clean, integrated finish. The kit includes the necessary sealing gasket and mounting hardware. It is important to cut the dashboard according to the provided mounting template for a perfect fit.

The GNX 20 display unit includes everything needed for installation on an existing NMEA 2000 network:

GNX 20 display
A clip-on trim ring
A protective cover
A gasket and mounting hardware for flush installation
A NMEA 2000 T-connector
A NMEA 2000 spur cable
Product documentation

Yes, if your engine is equipped with an NMEA 2000-compatible bridge, the GNX 20 can display numerous engine data such as RPM, temperature, oil pressure, and fuel consumption. The display will simply read the data available on the network.

Yes, the GNX 20 is fully customizable. You can configure up to 5 different display profiles, including dedicated profiles (sail, power) and a user profile. In each profile, you can select the data pages to display and the layout of information on each page (one, two, or three data fields).

Yes, the GNX 20 has an "Auto Power" function. When this option is enabled in the settings, the display turns on automatically as soon as the NMEA 2000 network to which it is connected is powered up.

The GNX 20 display operates on a standard NMEA 2000 network. The required input voltage for the network must be between 9 and 16 Vdc. The maximum voltage supported by the unit itself is 32 Vdc.

Yes, for optimal readability of the GNX 20's standard LCD screen, Garmin recommends installing it in a location where the viewing angle is less than 45 degrees. Beyond this, screen contrast may decrease.

Yes, the GNX 20 has a network sharing feature. You can configure it to synchronize its backlight color and intensity settings with other compatible Garmin displays and chartplotters on the same NMEA 2000 network. This ensures a uniform navigation console, day or night.

Yes, absolutely. The GNX 20 is NMEA 2000 certified. This means it can display data from any sensor (depth sounder, wind transducer, GPS, etc.) from another brand, provided the latter is also NMEA 2000 certified.

The GNX 20 display is a 4-inch navigation instrument designed to offload critical data from your network without cluttering your main screens. It allows you to view essential information such as speed, depth, and wind.

This display can receive and show various data from your sensors, including:

Speed (SOG, Bsp, etc.)Water depthWind data (speed and angle)Engine parametersBattery statusHeading direction

Yes, the GNX 20 display has an IPX7 protection rating, meaning it is designed to withstand temporary immersion in water.

The device features a 4-inch (approx. 10 cm) screen for clear navigation data display.

The display is protected by a glass lens with an anti-reflective finish, improving visibility even in strong light.

The instrument is designed to operate in various marine conditions, with an operating temperature range from -15°C to 70°C.

Yes, the device offers several profiles to suit your use:

Powerboat: for powerboats.Sail Cruise: for cruising sailboats.Sail Race: for regattas.Custom: for a custom configuration.

The display weighs 247 g without its protective cover and 283 g when equipped with the cover.

Yes, the GNX 20 display natively communicates with sensors and connected devices via an NMEA 2000 network.

Yes, it is possible to receive data from a NMEA 0183 device using an optional data cable (not included).

Yes, displaying data from Nexus instruments and sensors is possible using a GND 10 box (sold separately).

For the NMEA 2000 network, input voltage must be between 9 and 16 Vdc.

Installation can be done in two ways: flat mount (surface-mounted) or flush mount (recessed) in your dashboard.

Yes, a mounting template is included in the product box to help you make a precise cut for your bracket.

Yes, for optimal visibility, the viewing angle must not exceed 45° for the standard model. Note that screen color inversion may occur if the angle is too steep.

To prevent corrosion of metal contacts, it is strongly recommended to cover unused connectors with the weatherproof caps supplied with the device.

Absolutely. The product is supplied with everything needed, including a gasket and a template, to ensure a clean and watertight flush-mount installation.

If you install the device in fiberglass, use a countersink drill bit to drill only the top gelcoat layer. This will prevent cracks when tightening the screws.