Garmin GPSMAP 750 Installation Manual

The Garmin GPSMAP 750 is a high-performance marine chartplotter featuring a 7-inch sunlight-readable display, built-in worldwide basemap, support for BlueChart g3 and LakeVü g3 charts, integrated GPS/GLONASS receiver, sonar compatibility, NMEA 2000 and NMEA 0183 connectivity, and support for radar, autopilot, and other marine networks. Below are key sections for safety, installation, configuration, operation, and troubleshooting.

Features at a Glance

Key components: 7-inch WVGA display, Power/data cable, Mounting hardware, Protective cover, Documentation.

Package Contents

Unpack and verify all components are present.

1. GPSMAP 750 chartplotter unit
2. Power/data cable
3. Mounting bracket and hardware
4. Protective cover
5. Documentation and safety guide
6. Template for mounting holes

WARNING! Inspect all items for damage before installation. Contact Garmin support if any components are missing or damaged.

Mounting the Device

Select a suitable location on the vessel.

1. Choose location: Within easy view and reach of the helm, protected from direct spray, with adequate ventilation.
2. Use template: Position the provided template on the mounting surface and mark hole locations.
3. Drill holes: Drill holes for mounting screws and cable routing as indicated.
4. Attach bracket: Secure the mounting bracket using supplied hardware.
5. Mount unit: Slide the chartplotter onto the bracket until it clicks into place.

CAUTION! Ensure the mounting surface is strong enough to support the unit. Avoid locations with excessive vibration or heat.

Electrical Connections

Connect the power/data cable to vessel power and the chartplotter.

1. Disconnect vessel power before making connections.
2. Route cable: Route the power/data cable from the chartplotter to the power source and grounding point, avoiding sharp bends and sources of interference.
3. Connect power: Connect the red wire to a switched 10–32 Vdc positive terminal. Connect the black wire to a negative ground or the vessel’s common ground point.
4. Secure connections: Use appropriate crimp connectors or terminal blocks. Protect connections from moisture.
5. Connect to unit: Plug the power/data cable into the port on the back of the GPSMAP 750.

Tip: Install an appropriate in-line fuse (recommended 5 A) on the positive wire near the power source.

Network Connections

Connect to NMEA 2000, NMEA 0183, and Garmin Marine Network devices.

• NMEA 2000: Connect the appropriate cable (included or purchased separately) from the chartplotter's NMEA 2000 port to your vessel's NMEA 2000 backbone. Ensure proper termination and power.
• NMEA 0183: Use the dedicated wires in the power/data cable to connect to NMEA 0183 devices (e.g., VHF radio, AIS). Refer to the device manuals for wiring details.
• Garmin Marine Network (Ethernet): Use a standard Ethernet cable to connect to compatible Garmin radar, sounder, or other network devices for data sharing.

WARNING! Ensure all network connections are made with the power off. Verify polarity on NMEA 0183 connections.

Initial Configuration

Power on the chartplotter and complete the initial setup.

1. Power on: Restore vessel power. The unit will power on automatically.
2. Language/Region: Follow on-screen prompts to select language, units (nautical, statute), and region.
3. Agree to terms: Read and accept the license agreement.
4. Configure sensors: The unit will automatically search for connected sensors (GPS, depth, speed, etc.). Verify all sensors are detected.
5. Load charts: Insert a pre-programmed microSD card with BlueChart or LakeVü maps, or purchase and download charts via Garmin Express.

CAUTION! Do not turn off the unit during initial configuration or software updates.

Specifications

• Display: 7" diagonal, 800 x 480 WVGA, capacitive touch, LED backlight.
• GPS: High-sensitivity receiver with GPS and GLONASS support.
• Power: 10–32 Vdc, typical current draw 1.5 A at 12 Vdc.
• Waterproof: IEC 60529 IPX7.
• Operating Temp: -15° to 55°C (5° to 131°F).
• Storage Temp: -40° to 85°C (-40° to 185°F).
• Dimensions (WxHxD): 211 x 134 x 57 mm (8.3" x 5.3" x 2.2").
• Weight: 0.77 kg (1.7 lb).
• Compliance: CE, FCC, IC, RCM.

Display & Interface Overview

The home screen provides access to main functions: Navigation, Sonar, Radar, Music, and Settings.

Touchscreen Controls: Tap to select, swipe to pan charts, pinch to zoom.

Physical Buttons: Power button (press to turn on/off, hold to adjust brightness).

Settings Menu: Access system, navigation, communication, and network settings. Configure display, sounds, units, alarms, and connected devices.

System Integration

Connect compatible Garmin devices for an integrated marine network.

1. Radar: Connect via Ethernet cable to display radar overlay on charts.
2. Autopilot: Connect via NMEA 2000 to control and navigate to waypoints.
3. VHF Radio/AIS: Connect via NMEA 0183 to display AIS targets and use DSC calling.
4. Cameras: Connect compatible Garmin cameras to view on the chartplotter.
5. Audio: Connect to a Fusion-Link compatible stereo for media control.

Tip: Use the Garmin Marine Network configurator in the Settings menu to manage connected devices.

Regulatory Information

FCC Compliance: This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. CE Compliance: Meets all applicable EU directive requirements. Copyright © Garmin Ltd. or its subsidiaries. Garmin and GPSMAP are trademarks of Garmin Ltd. or its subsidiaries. For the latest software updates and product support, visit www.garmin.com or contact Garmin Product Support.

Troubleshooting

Reset: Settings > System > Reset > Reset Defaults (Note: This will erase user settings and data).

Service: For technical support, visit support.garmin.com or contact your local Garmin dealer.