Garmin GPS Manual 72

The Garmin GPS 72 is a rugged, waterproof handheld GPS receiver designed for outdoor navigation. It features a high-sensitivity GPS receiver, simple interface, large display, and long battery life. Ideal for marine, hiking, and general outdoor use, it provides waypoint marking, route creation, track logging, and essential navigation data. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: High-sensitivity GPS antenna, waterproof case (IPX7), backlit display, external antenna port, serial interface, and user-replaceable batteries.

Feature	Description
Waterproof rating	IPX7 standard (submersible to 1 meter for 30 minutes)
Display	4-level grayscale LCD, 120 x 160 pixels
GPS receiver	High-sensitivity, WAAS enabled
Waypoints	500 user waypoints with name and symbol
Routes	20 reversible routes with up to 50 points each
Tracks	10 saved tracks, 10,000 track points
Battery life	Up to 16 hours on 2 AA batteries
Interface	RS-232 serial interface for PC connection
Backlight	Adjustable with timer
Navigation screens	Pointer, Highway, Map, Position, Menu

Installation

Unpack and inspect contents. Install batteries and prepare for first use.

1. Install batteries: Open battery compartment, insert 2 AA batteries observing polarity.
2. External antenna (optional): Connect to external antenna port for improved reception.
3. PC connection (optional): Connect serial cable to computer for data transfer.
4. Wrist strap: Attach included wrist strap for secure handling.

WARNING! Use only recommended batteries. Do not mix old and new batteries.

First-Time Setup

Power on GPS; follow initial setup prompts.

1. Acquire satellite signals: Go outdoors with clear sky view, wait for satellite acquisition.
2. Set language: In SETUP menu, select preferred language (default ENGLISH).
3. Set units: Choose metric or statute units for distance, speed, elevation.
4. Set time: Configure time format (12/24 hour) and time zone.
5. Calibrate compass (if applicable): Follow on-screen instructions.

CAUTION! Initial satellite acquisition may take several minutes. Ensure clear view of sky.

Specifications

• Dimensions: 6.1 x 2.0 x 1.3 inches (15.5 x 5.1 x 3.3 cm).
• Weight: 7.5 ounces (213 grams) with batteries.
• Waterproof: IPX7 standard.
• Battery: 2 AA batteries (not included).
• Battery life: Up to 16 hours typical use.
• Display: 120 x 160 pixel LCD with 4 grayscale levels.
• Waypoints: 500 with name and symbol.
• Routes: 20 reversible routes (50 points each).
• Tracks: 10 saved tracks, 10,000 points.
• Interface: RS-232 serial (NMEA 0183 compatible).
• Operating temperature: -4°F to 158°F (-20°C to 70°C).

Controls and Settings

Access functions via front panel buttons. PAGE button cycles through main screens.

Front Panel: POWER, PAGE, ENTER/MARK, QUIT, ROCKER (up/down/left/right).

Main Screens: Satellite Status, Map, Pointer, Highway, Position. Settings: Setup menu for system, units, time, display, interface, alarms. Navigation: Mark waypoints, create routes, follow tracks, view trip computer.

Connecting Devices

External antenna: Connect to external antenna port. PC: Connect serial cable to computer serial port.

1. Turn off GPS before connecting cables.
2. Match cable connectors to ports (serial to serial).
3. Configure interface settings in SETUP menu (baud rate, protocol).
4. Use Garmin software or compatible programs for data transfer.

Tip: Ensure proper cable orientation when connecting to PC.

Basic Navigation

Navigate to waypoints, follow routes, and track your path.

1. Mark waypoint: Press and hold ENTER/MARK at current location.
2. Go to waypoint: Select waypoint from list, choose "Go To".
3. Create route: In Route menu, select points in sequence.
4. Follow route: Select route, choose "Follow".
5. Track recording: Enable track log to record your path.
6. View position: Check Position screen for coordinates, altitude.
7. Use compass: Pointer screen shows direction to destination.
8. Trip computer: View speed, distance, time, and other data.

WARNING! GPS accuracy can be affected by terrain, weather, and satellite geometry.

Advanced Features

NMEA output: Configure for compatibility with chartplotters and other devices. Alarms: Set anchor, proximity, and arrival alarms. Sun/Moon information: View sunrise/sunset and moon phase data.

Care & Maintenance

Clean with fresh water after saltwater use. Use mild soap and soft cloth. Store in cool, dry place.

CAUTION! Do not use harsh chemicals or abrasives. Keep battery contacts clean.

Regulatory Information

FCC compliance: This device complies with Part 15 of FCC rules. Operation is subject to conditions that device does not cause harmful interference. Copyright © Garmin Ltd. or its subsidiaries. For support, visit www.garmin.com or contact Garmin Product Support.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Dead batteries	Replace with fresh AA batteries.
Poor satellite reception	Obstructed view	Move to open area with clear sky view.
Inaccurate position	Poor satellite geometry	Wait for better satellite alignment; ensure WAAS enabled.
Display difficult to read	Contrast setting	Adjust contrast in Setup > Display menu.
PC connection failed	Cable/port issues	Check cable connections; verify COM port settings.
Waypoints not saving	Memory full	Delete unused waypoints to free memory.

Reset: Press and hold POWER + PAGE + ENTER while powering on for master reset (erases all data).

Service: Contact Garmin Product Support or visit www.garmin.com