Garmin GPSMAP 430s Manual

The Garmin GPSMAP 430s is a 4-inch color chartplotter with built-in GPS and a high-sensitivity WAAS receiver, designed for marine navigation. It features a sunlight-readable display, preloaded BlueChart g2 coastal charts, support for NMEA 0183 and 2000 connectivity, sonar capabilities (when connected to a compatible transducer), and a rugged, waterproof design. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 4-inch color TFT display, GPS antenna, Power/data cable, NMEA 0183/2000 interface, Transducer input (for sonar), SD card slot.

Installation

Unpack and inspect contents. Choose a mounting location with clear view of sky for GPS reception.

1. Mount the bracket: Use provided hardware to securely mount the bracket to a flat surface.
2. Connect power: Route the power/data cable to the unit and connect to a 10-35V DC power source. Install the in-line fuse.
3. Connect NMEA devices: If interfacing with autopilot or other instruments, connect NMEA 0183 or NMEA 2000 cables as needed.
4. Connect transducer: For sonar use, connect the compatible transducer cable to the labeled port.
5. Secure the unit: Snap the GPSMAP 430s onto the mounted bracket and tighten the security screw.

WARNING! Ensure all power is OFF during installation. Route cables away from moving parts and high heat. Seal any deck penetrations.

First-Time Setup

Power on the unit; follow initial prompts.

1. Acquire GPS signal: Place unit with clear view of sky. Initial acquisition may take several minutes.
2. Set language and units: Use the SETUP menu to select language (ENGLISH default) and units (nautical miles, knots, etc.).
3. Calibrate compass (if applicable): Follow on-screen prompts if using electronic compass data.
4. Configure alarms: Set anchor drag, off-course, and other safety alarms as desired.
5. Load additional charts: Insert SD card with purchased charts if needed.

CAUTION! Ensure the unit is securely mounted before vessel movement. Verify all connections are waterproof.

Specifications

• Display Size: 4 inches diagonal.
• Display Resolution: 320 x 480 pixels.
• GPS Receiver: High-sensitivity, WAAS-enabled.
• Chart Preload: BlueChart g2 coastal charts.
• Sonar Capability: Supports 50/200 kHz (transducer required).
• Waterproof Standard: IPX7.
• Power Input: 10-35V DC.
• Interface: NMEA 0183, NMEA 2000, SD card slot.
• Operating Temp: -15°C to 55°C (5°F to 131°F).

Controls and Settings

Access menus via the PAGE and MENU buttons. Front Panel: POWER, PAGE, MENU, ZOOM IN/OUT, ROCKER key (up/down/left/right/ENTER).

Key Functions: POWER turns unit on/off. PAGE cycles through main display modes. MENU accesses context-sensitive options. ROCKER key navigates menus and moves the cursor on the chart.

Settings Menu: System (Language, Units, Backlight), Navigation (Route Preferences, Alarms), Sonar (Frequency, Gain, Range), Communications (NMEA Settings). Chart Setup: Detail, Orientation (North Up, Course Up), Waypoints & Routes management.

Connecting Devices

NMEA 0183: Connect to talker/listener wires for data exchange with autopilots, instruments. NMEA 2000: Connect to a compatible backbone for plug-and-play integration. Transducer: Connect to sonar port for depth/temperature/fishfinding.

1. Turn off all devices before making connections.
2. Refer to the wiring diagram in the appendix for NMEA 0183 pinouts.
3. Ensure NMEA 2000 network is properly terminated and powered.
4. Select correct data sources in the Communications setup menu.

Tip: Use marine-grade heat-shrink connectors and sealant for all external wire connections.

Navigation Basics

Creating and following waypoints and routes.

1. Create a Waypoint: Move cursor to desired location on chart, press ENTER, select "Mark Waypoint".
2. Create a Route: Press MENU from Chart page, select "Route Planner". Add waypoints in sequence.
3. Follow a Route: Select a route from the list, press MENU, select "Navigate".
4. Go To: Select a waypoint or chart object, press ENTER, select "Go To".
5. Track Log: Enable track recording in Setup to log your path.
6. Man Overboard (MOB): Press and hold the PAGE button to instantly mark and navigate back to an MOB position.

WARNING! Always use navigation aids as a supplement to, not a replacement for, vigilant visual piloting and official nautical charts.

Sonar Operation

When a transducer is connected, access the Sonar page via the PAGE button.

1. Adjust Range: Use ZOOM keys or menu to set depth range manually or use Auto Range.
2. Adjust Gain: Use the menu to increase/decrease sensitivity for clearer returns.
3. Select Frequency: Choose 50 kHz for deeper water/wider view, 200 kHz for better detail in shallower water.
4. Interpret Display: Bottom contour, fish arches, and structure will appear. Use the split-screen zoom for detail.

Note: Sonar performance is highly dependent on transducer installation and water conditions.

Care & Cleaning

Disconnect power before cleaning. Use a soft, damp cloth with fresh water to clean display and case. A mild soap solution can be used for stubborn stains. Rinse with fresh water and dry thoroughly.

CAUTION! Do not use harsh chemicals, solvents, or abrasive cleaners. Do not spray liquids directly onto the unit or connectors.

Regulatory Information

FCC Compliance: This device complies with part 15 of the FCC Rules. Operation is subject to condition that device does not cause harmful interference. This device contains a transmitter module that complies with Innovation, Science and Economic Development Canada's licence-exempt RSS(s). Copyright © Garmin Ltd. or its subsidiaries. BlueChart and GPSMAP are trademarks of Garmin Ltd. or its subsidiaries. For support, visit www.garmin.com/support or contact Garmin Product Support.

Troubleshooting

Reset: Setup > System > Reset > select desired reset option.

Service: Contact Garmin Product Support or visit www.garmin.com for software updates and service locations.