Garmin GPS 76 Manual

The Garmin GPS 76 is a rugged, waterproof handheld GPS receiver designed for marine and outdoor navigation. It features a high-sensitivity GPS receiver, 24 MB of internal memory for map storage, a large display with backlight, WAAS-enabled accuracy, and a built-in quad helix antenna. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Waterproof case (IPX7), high-sensitivity GPS receiver, 24 MB internal memory, large backlit display, quad helix antenna, WAAS support, and NMEA 0183 interface.

Feature	Description
Waterproof Rating	IPX7 - submersible to 1 meter for 30 minutes
Internal Memory	24 MB for map storage
GPS Receiver	High-sensitivity with WAAS support
Antenna	Built-in quad helix for superior reception
Display	Large LCD with adjustable backlight
Battery Life	Up to 16 hours on 2 AA batteries
Interface	NMEA 0183 compatible for marine use
Waypoints	1000 user waypoints with names and symbols
Routes	50 reversible routes with up to 50 points each
Tracks	10 saved tracks with 750 points each

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 power: Connect optional external power cable for marine use.
3. Mounting: Use optional mounting bracket for fixed installation.
4. Antenna positioning: Ensure clear view of sky for best reception.

WARNING! Use only alkaline or NiMH AA batteries. Do not mix old and new batteries.

First-Time Setup

Power on GPS; follow initialization procedure.

1. Acquire satellites: Place unit outdoors with clear sky view, power on to acquire satellites.
2. Set language: In SETUP menu, select preferred language.
3. Configure units: Set navigation units (statute, nautical, metric).
4. Set time: Configure time format and time zone.
5. Calibrate compass: Follow on-screen instructions if using electronic compass model.

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

Specifications

• Dimensions: 6.3" H x 2.7" W x 1.4" D (15.9 x 6.9 x 3.6 cm).
• Weight: 7.5 oz (213 g) with batteries.
• Display: 2.6" W x 1.5" H (6.6 x 3.8 cm), 160 x 240 pixels.
• Waterproof: IPX7 standard.
• Battery: 2 AA batteries (not included).
• Battery Life: Up to 16 hours.
• Memory: 24 MB internal.
• Waypoints: 1000 with names and symbols.
• Routes: 50 reversible routes.
• Interface: RS-232 serial interface, NMEA 0183.
• Operating Temp: 5°F to 158°F (-15°C to 70°C).

Controls and Settings

Access menus via PAGE and ENTER buttons. Front Panel: POWER, PAGE, ENTER, ROCKER keypad, QUIT.

Buttons: POWER (on/off), PAGE (cycle through pages), ENTER (select/confirm), ROCKER (move cursor/menu), QUIT (exit/cancel).

Main Pages: SATELLITE (reception status), MAP (navigation map), COMPASS (navigation pointer), HIGHWAY (course deviation), ACTIVE ROUTE (route navigation), MAIN MENU (access all features). Settings: Units, Time, Display, System, Interface, Navigation, Alarms.

Connecting Devices

Serial interface: For PC connection or NMEA 0183 marine network. External power: For continuous marine use.

1. Turn off GPS before connecting cables.
2. PC connection: Use serial cable to connect to computer for data transfer.
3. NMEA connection: Connect to marine instruments using NMEA 0183 standard.
4. External antenna: Optional external antenna connection available.

Tip: Ensure proper cable orientation when connecting to serial port.

Navigation Features

Basic navigation to waypoints, routes, and tracks.

1. Go To: Select waypoint and choose "Go To" for direct navigation.
2. Follow Route: Activate saved route for turn-by-turn navigation.
3. Track Back: Retrace your path using saved track.
4. Man Overboard: Mark current position instantly for emergency return.
5. Sun/Moon Info: Display sunrise/sunset and moon phase information.
6. Area Calculation: Calculate area of irregular shapes.
7. Fishing Calendar: Best fishing times based on sun/moon data.

WARNING! GPS accuracy affected by atmospheric conditions, satellite geometry, and obstructions.

Waypoints & Routes

Create and manage waypoints, routes, and tracks.

1. Mark waypoint: Press and hold ENTER at current location.
2. Edit waypoint: Change name, symbol, coordinates in waypoint menu.
3. Create route: Select waypoints in sequence to build route.
4. Navigate route: Activate route for turn-by-turn guidance.
5. Save track: Automatically record track log for later review.
6. Track back: Navigate back along saved track.

Care & Cleaning

Clean with fresh water after saltwater use. Use mild soap and soft cloth.

CAUTION! Do not use harsh chemicals, solvents, or abrasives. Rinse thoroughly after saltwater exposure.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. This device complies with part 15 of the FCC Rules. 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	Obstructions	Move to open area with clear sky view.
Inaccurate position	WAAS disabled	Enable WAAS in system setup menu.
Display difficult to read	Backlight off	Adjust backlight brightness in display settings.
Waypoints not saving	Memory full	Delete unused waypoints to free space.
PC connection failed	Wrong cable/port	Verify cable type and COM port settings.

Reset: Press and hold PAGE + POWER while turning on for system reset.

Service: Contact Garmin Product Support or authorized service center.