Garmin GPSMAP 4012 User Manual

The Garmin GPSMAP 4012 is a 12-inch marine chartplotter featuring a high-resolution sunlight-readable display, built-in worldwide basemap, support for BlueChart g2 and g2 Vision charts, integrated GPS/GLONASS receiver, NMEA 2000 and NMEA 0183 connectivity, sonar compatibility, radar overlay support, and advanced navigation functions. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 12-inch LCD display, Power/data cable, Mounting hardware, Protective cover, Remote control (optional).

Installation

Unpack and inspect contents. Choose a suitable mounting location with clear view and access.

1. Mount the bracket: Use provided hardware to secure mounting bracket to helm or console.
2. Connect power: Route power cable to battery; connect red wire to positive (+), black wire to negative (-). Install inline fuse as specified.
3. Connect data networks: Attach NMEA 2000 backbone or NMEA 0183 wires per wiring diagram.
4. Attach unit: Secure chartplotter to bracket; ensure all connections are snug and protected from moisture.

WARNING! Disconnect battery before making electrical connections. Ensure all wiring is properly insulated and secured against vibration.

First-Time Setup

Power on unit; follow initial setup prompts.

1. Language and units: Select language (ENGLISH default), set nautical/miles/kilometers, depth units.
2. Configure location: Allow GPS to acquire satellites; set home port or default location.
3. Chart setup: Insert preloaded BlueChart microSD card or purchase/download charts.
4. Connect peripherals: Go to Settings > Communications to detect connected NMEA devices, sonar, radar.
5. Calibrate sensors: If connected, calibrate speed, temperature, or wind sensors.

CAUTION! Perform initial setup in a safe, stationary location with clear view of sky for GPS acquisition.

Specifications

• Display Size: 12 inches diagonal.
• Display Resolution: 800 x 600 pixels, VGA.
• Touchscreen: No (button and keypad controlled).
• GPS: High-sensitivity receiver with WAAS/EGNOS, GLONASS support.
• Chart Storage: MicroSD card slot (supports up to 32 GB).
• Power Requirements: 10–32 V DC, 2.5 A max.
• Waterproof Standard: IPX7.
• Operating Temperature: -15°C to 55°C (5°F to 131°F).
• Dimensions (W x H x D): 327 x 241 x 64 mm (12.9 x 9.5 x 2.5 in).
• Weight: 2.7 kg (5.9 lbs).

Controls and Settings

Front Panel: POWER, PAGE, ROCKER key (up/down/left/right/ENTER), ZOOM IN/OUT, BACKLIGHT, MENU.

On-Screen Menus: Use PAGE to cycle views (Chart, Sonar, Radar, Home). Use MENU to access settings for current page.

Chart Settings: Chart detail, orientation (North Up, Course Up, Head Up), depth shading, waypoint symbols. Navigation Settings: Route planning, waypoint management, proximity alarms, anchor drag alarm. System Settings: Display (backlight, contrast, color scheme), units, communications, system information, reset.

Connecting Devices

NMEA 2000: Connect to backbone using included power cable and T-connector. NMEA 0183: Connect to compatible devices using TX/RX wires. Sonar: Connect via Garmin Marine Network cable to compatible sounder module. Radar: Connect via Ethernet cable to GMR radar.

1. Ensure unit and all devices are powered off.
2. Use appropriate cables; follow pin-out diagrams in manual.
3. Secure connections with waterproof heat-shrink or sealant.
4. Power on; go to Settings > Communications to verify connected devices.

Tip: Label all cables during installation for easier troubleshooting later.

Navigation & Chartplotting

Create and follow routes, mark waypoints, track your voyage.

1. View chart: Press PAGE until Chart page is displayed. Zoom with ZOOM keys.
2. Mark waypoint: Center cursor on desired location, press ENTER > "Mark Waypoint".
3. Create route: MENU > "Route Planning" > "New Route". Use cursor to add points, press ENTER to place.
4. Follow route: Select route from list, choose "Navigate".
5. Track log: Enable track recording in MENU > Tracks. Save or clear as needed.
6. Man Overboard (MOB): Press and hold PAGE button to mark MOB location and begin navigation back.
7. Dock-to-dock Autorouting: (With compatible charts) Enter destination, unit suggests route considering water depth and obstacles.

WARNING! Always verify chart data and use visual navigation. Electronic charts are aids only.

Sonar & Radar

Sonar: When connected, press PAGE to cycle to Sonar view. Adjust frequency, range, gain, and color scheme via MENU. Use Split Zoom to examine bottom detail. Radar: When connected, press PAGE to Radar view or overlay on Chart. Adjust gain, range, and interference rejection. Use MARPA to track targets.

Care & Maintenance

Use a soft, damp cloth with mild soap to clean screen and casing. Do not use abrasive cleaners or solvents. Periodically check cable connections for corrosion. Ensure vents are clear of debris. Store in a dry place when not in use for extended periods.

CAUTION! Do not spray liquids directly on unit. Ensure power is disconnected before cleaning connections.

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. IC Compliance: Complies with Industry Canada licence-exempt RSS standard(s). Contains transmitter module FCC ID: IPH-XXXXXX. For detailed regulatory and warranty information, visit www.garmin.com or contact Garmin Product Support.

Troubleshooting

Reset: System Settings > Reset > Restore Defaults (note: erases user waypoints/routes unless saved).

Service: Contact Garmin Product Support: 1-800-800-1020 (US) or www.garmin.com/support.