Garmin GPSMAP 545 Owner's Manual

The Garmin GPSMAP 545 is a high-performance marine chartplotter featuring a 5-inch color display, preloaded BlueChart g2 coastal charts, built-in worldwide basemap, high-sensitivity GPS receiver, support for NMEA 0183 and 2000 data, sonar capability (with optional transducer), waterproof design (IPX7), and intuitive user interface. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 5-inch color TFT display, Power/data cable, Mounting bracket, Protective cover, Documentation.

Installation

Unpack and inspect contents. Choose a suitable mounting location.

1. Mount the bracket: Select a flat surface with clear view; secure using provided hardware.
2. Connect power/data cable: Route cable to power source and connect red to positive, black to negative.
3. Connect optional devices: Attach NMEA 0183 devices to appropriate wires; connect NMEA 2000 network if used.
4. Secure the unit: Slide chartplotter onto bracket and tighten locking screw.

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

First-Time Setup

Apply power; follow on-screen prompts.

1. Initial GPS fix: Place unit in open sky view; acquisition may take several minutes.
2. Set language and units: Use MENU > System > Language and Units to select preferences.
3. Configure chart display: Adjust detail, orientation (North Up/Course Up), and data fields.
4. Calibrate sensors (if applicable): Follow prompts for compass or water speed calibration.

CAUTION! Do not power the unit with incorrect polarity. Ensure all connections are waterproofed.

Specifications

• Display Size: 5 inches diagonal.
• Display Resolution: 480 x 640 pixels VGA.
• GPS: High-sensitivity receiver, WAAS/EGNOS enabled.
• Charts: Preloaded BlueChart g2, supports optional BlueChart g2 Vision.
• Waterproof: IPX7 standard.
• Power: 10–32 V DC, 1.5 A max.
• Data Storage: Accepts microSD card for additional charts and data.
• Operating Temp: -15°C to 55°C (5°F to 131°F).
• Dimensions: 16.5 x 13.2 x 7.4 cm (6.5" x 5.2" x 2.9").

Controls and Settings

Access functions via dedicated keys and rotary knob. Front Panel: POWER, PAGES, MENU, ENTER/MARK, ROCKER key (up/down/left/right), rotary knob.

On-Screen Menus: Use MENU key to access Chart, Sonar (if equipped), Waypoints, Routes, Tracks, and System settings.

Chart Settings: Orientation, Detail, Color Scheme, Overlays (Tides, Currents). Navigation Settings: Arrival Alarm, Off Course Alarm, Waypoint Projection. System Settings: Language, Units (Nautical/Statute), Backlight, Time Format, System Information.

Connecting Devices

NMEA 0183: Connect to external GPS, autopilot, AIS, etc., using designated wires. NMEA 2000: Connect to compatible network via appropriate cable. Sonar: Connect optional GSD 22 module and transducer.

1. Turn off all devices before making connections.
2. Refer to wiring diagram for NMEA 0183 connections (Tx/Rx, Ground).
3. For NMEA 2000, ensure proper termination and power on the backbone.
4. Select data sources in MENU > System > Communications.

Tip: Use marine-grade heat-shrink tubing and sealants for all external connections.

Using Navigation Features

Supports waypoint, route, and track navigation.

1. Create Waypoint: Press ENTER/MARK at current location or cursor position.
2. Navigate To: Select a waypoint or chart object, choose "Go To".
3. Create Route: MENU > Routes > New Route, add points from chart or list.
4. Follow Route: Activate route from list; use steering guidance on screen.
5. Track Recording: Automatically records track; can save and reverse.
6. Man Overboard (MOB): Press and hold ENTER/MARK to mark MOB position and begin navigation back.
7. Data Screens: Cycle through PAGES to view trip data, compass, highway, etc.

WARNING! Always maintain situational awareness. This device is an aid to navigation and should not replace traditional methods.

Sonar Features (Optional)

With GSD 22 sounder module installed: Access via Sonar Page. Shows depth, water temperature, bottom contour, and fish arches. Adjust frequency, range, gain, and alarms.

Care & Maintenance

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

CAUTION! Ensure the protective cover is sealed when not in use. Store in a cool, dry place. Periodically check cable connections for corrosion.

Regulatory Information

FCC Compliance: This device complies with part 15 of the FCC Rules. Operation is subject to condition that it does not cause harmful interference. Contains transmitter module FCC ID: IPH-005177. IC: 1792A-005177. Copyright © Garmin Ltd. or its subsidiaries. BlueChart and GPSMAP are trademarks of Garmin Ltd. For support, visit www.garmin.com/support or contact Garmin Product Support.

Troubleshooting

Reset: MENU > System > Reset > Reset Defaults (Note: erases user data).

Service: Contact Garmin Product Support. Do not open the unit; void warranty if opened by unauthorized personnel.