Garmin GPSMAP 750 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 coastal charts, sonar compatibility, NMEA 2000 and 0183 connectivity, touchscreen interface, wireless networking, and rugged, waterproof design (IPX7). Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

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

Installation

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

1. Mount the unit: Use provided hardware to secure bracket or flush mount.
2. Connect power: Route power/data cable to 10–32 Vdc source; connect red to positive, black to negative.
3. Connect NMEA networks: Attach NMEA 2000 drop cable or NMEA 0183 wires as needed.
4. Connect sonar: Attach compatible transducer cable to appropriate port.
5. Secure cables: Use cable ties and ensure all connections are waterproof.

WARNING! Ensure power is off during installation. Route cables away from moving parts and heat sources.

First-Time Setup

Apply power; follow on-screen prompts.

1. Select language: Choose from available options (default ENGLISH).
2. Configure units: Set distance, speed, depth, and temperature units (e.g., nautical miles, knots).
3. Agree to terms: Read and accept Marine Disclaimer.
4. Calibrate sensors: Follow prompts for compass and water speed calibration if applicable.
5. Load charts: Insert microSD card with BlueChart g3 or use built-in basemap.

CAUTION! Ensure secure mounting before operating vessel. Verify all connections are tight and waterproof.

Specifications

• Display Size: 7 inches diagonal.
• Resolution: 800 x 480 pixels.
• GPS Receiver: Internal, high-sensitivity, GPS/GLONASS.
• Waterproof Rating: IPX7.
• Power Supply: 10–32 Vdc.
• Operating Temp: -15° to 55°C (5° to 131°F).
• Storage Temp: -40° to 85°C (-40° to 185°F).
• Charts: Preloaded worldwide basemap; supports BlueChart g3, LakeVü g3.
• Connectivity: NMEA 2000, NMEA 0183, Ethernet, microSD card slot.
• Sonar: Supports CHIRP traditional, ClearVü, SideVü (with compatible transducer).

Controls and Settings

Primary interface via touchscreen. Physical buttons: POWER, VOLUME.

Touchscreen: Tap icons, swipe screens, pinch to zoom on charts.

Home Screen: Access Navigation, Sonar, Media, Settings. Settings: System (Language, Units, Time), Navigation (Route Planning, Alarms), Communication (NMEA, Network), Sonar (Frequency, Range), Display (Brightness, Color Scheme).

Connecting Devices

NMEA 2000: Connect to network for engine data, instruments. NMEA 0183: Wire for autopilot, AIS. Sonar: Attach transducer. Ethernet: Network multiple Garmin devices. Wi-Fi: Optional adapter for wireless updates, ActiveCaptain.

1. Turn off power before connecting devices.
2. Match cables to correct ports (refer to diagram on unit).
3. Use waterproof connectors and sealant for exposed connections.
4. Configure data sources in Settings > Communications.

Tip: Label cables during installation for easier identification later.

Using Navigation Features

Plan and follow routes, mark waypoints, view charts.

1. View chart: From Home, tap Navigation. Use pinch/zoom.
2. Mark waypoint: Tap and hold location, select "Mark Waypoint."
3. Create route: Tap Route, tap points on chart, tap "Navigate."
4. Follow route: Unit provides steering guidance, ETA, XTE.
5. Use Go To: Select destination from waypoints, marinas, or search.
6. Set alarms: Configure anchor drag, arrival, off-course alarms.
7. View data: Customize data fields (speed, depth, heading, etc.).

WARNING! Always maintain situational awareness. Use this device as an aid to navigation, not as sole source.

Sonar & Fishfinding

With compatible transducer, view traditional sonar, ClearVü, or SideVü.

1. From Home, tap Sonar.
2. Select view: Traditional, ClearVü (down scan), or SideVü.
3. Adjust settings: Frequency, range, sensitivity, color scheme.
4. Mark fish: Use cursor to mark locations.
5. Record sonar: Start/stop recording to microSD card.

Note: Sonar performance depends on transducer installation and water conditions.

Care & Cleaning

Disconnect power before cleaning. Use soft, damp cloth with mild soap. Do not use abrasive cleaners or solvents.

CAUTION! Do not spray liquids directly on unit. Ensure connectors and seals are free of debris.

Regulatory Information

FCC Compliance: This device complies with part 15 of the FCC Rules. Operation is subject to conditions that it does not cause harmful interference. IC Compliance: Complies with Industry Canada licence-exempt RSS standard(s). Copyright © Garmin Ltd. or its subsidiaries. For support, visit support.garmin.com or contact your local dealer.

Troubleshooting

Reset: Settings > System > Reset to Factory Defaults (backs up waypoints/routes first).

Service: Contact Garmin Product Support or authorized dealer.