Garmin GPS 3 Manual

The Garmin GPS 3 is a compact, rugged handheld GPS receiver designed for outdoor navigation. It features a high-sensitivity GPS receiver, detailed basemap, waypoint and route storage, track log recording, and an easy-to-use interface. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: GPS receiver unit, wrist strap, PC interface cable (optional), user manual.

Feature	Description
GPS Receiver	High-sensitivity for reliable positioning
Basemap	Preloaded with major roads, cities, and waterways
Waypoints	Store up to 500 user-defined locations
Routes	Create and follow routes with up to 50 points
Track Log	Record and save tracks for later review
Waterproof	IPX7 rated for protection against immersion
Battery Life	Up to 16 hours on 2 AA batteries
Display	High-contrast LCD for easy viewing
Interface	Serial port for PC connection (optional cable)
Backlight	Adjustable for night use

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. Attach wrist strap: Thread through loop on unit for secure handling.
3. Power on: Press and hold POWER button until unit beeps and display activates.
4. Initial satellite acquisition: Place unit outdoors with clear sky view for first fix.

WARNING! Use only recommended batteries. Do not immerse beyond rated depth. Keep away from extreme heat.

First-Time Setup

Power on GPS; follow on-screen prompts for initial configuration.

1. Select language: Choose from available options (default ENGLISH).
2. Set units: Choose metric or statute for distance, elevation, speed.
3. Set time format: Select 12-hour or 24-hour format.
4. Set north reference: Choose True North or Magnetic North.
5. Acquire satellites: Allow unit to establish GPS position (may take several minutes).

CAUTION! Ensure clear view of sky for initial satellite acquisition. Avoid tall buildings and dense foliage.

Specifications

• GPS Receiver: 12 parallel channel
• Accuracy: Position: <15 meters RMS, Velocity: 0.1 knot RMS steady state
• Update Rate: 1 second continuous
• Dynamics: Up to 999 knots, altitude limit 18,000 meters (60,000 feet)
• Interface: NMEA 0183, RTCM 104 DGPS data format
• Power: 2 AA batteries (alkaline or lithium recommended)
• Battery Life: 16 hours typical use
• Waterproof: IPX7 standard (immersion to 1 meter for 30 minutes)
• Operating Temp: -15°C to 70°C (5°F to 158°F)
• Storage Temp: -40°C to 85°C (-40°F to 185°F)
• Dimensions: 5.3 x 11.4 x 3.0 cm (2.1" x 4.5" x 1.2")
• Weight: 170 grams (6.0 oz) with batteries

Controls and Settings

Access menus via PAGE and ENTER buttons. Front Panel: POWER, PAGE, ENTER, ROCKER key (up/down/left/right).

Display Pages: Satellite Status, Map, Navigation, Main Menu.

Settings: System (units, time, backlight), Navigation (route options, alarms), Interface (data format, baud rate). Waypoints: Mark current location or enter coordinates manually. Routes: Create from waypoints or active track. Tracks: Record and save track log, set recording interval.

Connecting Devices

PC Connection: Optional serial interface cable (not included). External Antenna: Optional external antenna connector.

1. Turn off GPS before connecting cables.
2. Connect serial cable to PC COM port and GPS interface port.
3. Configure interface settings in GPS menu (baud rate, data format).
4. Use compatible software for data transfer (waypoints, routes, tracks).

Tip: Ensure GPS interface settings match PC software requirements. Use quality cables for reliable data transfer.

Basic Navigation

Follow these steps for basic GPS navigation.

1. Mark waypoint: Press and hold ENTER at desired location, name and save.
2. Navigate to waypoint: Select waypoint from list, choose GOTO.
3. Follow bearing: Navigation page shows bearing, distance, and estimated time.
3. Create route: From Main Menu, select Routes, create new route adding waypoints.
4. Follow route: Select route, choose Navigate to follow defined path.
5. Track recording: Enable track log in Track menu, set recording method.
6. Save track: Save active track for later reference or route creation.

WARNING! GPS accuracy can be affected by environmental factors. Always carry backup navigation methods.

Advanced Features

TracBack®: Retrace your path using saved track. Proximity Waypoints: Set alarms for approaching points of interest. Sun/Moon Information: Display sunrise/sunset and moon phase data. Area Calculation: Calculate area of irregular shapes using track log.

Care & Maintenance

Clean with damp cloth only; no harsh chemicals. Store in dry place when not in use. Replace batteries when low. Periodically update firmware if applicable.

CAUTION! Do not use solvents or abrasive cleaners. Avoid prolonged exposure to direct sunlight. Remove batteries if storing for extended periods.

Regulatory Information

FCC Compliance: This device complies with Part 15 of FCC rules. Operation subject to conditions: (1) device may not cause harmful interference, (2) device must accept any interference received. 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	Multipath interference	Move away from tall buildings, reflective surfaces.
Display difficult to read	Backlight off/angle	Adjust backlight; view from proper angle.
Buttons not responding	Unit locked	Press and hold POWER to reset if necessary.
PC connection failed	Wrong settings/cable	Verify interface settings; check cable connections.

Reset: Press and hold POWER for 10 seconds to perform soft reset.

Service: Contact Garmin Product Support or authorized service center.