Garmin GPS 3 Plus Manual

The Garmin GPS 3 Plus is a rugged, handheld GPS receiver featuring a 12-parallel-channel GPS receiver, built-in basemap, 1 MB internal memory for storing additional map data, WAAS-enabled for improved accuracy, waterproof construction (IPX7), and a high-contrast LCD display with backlight. It supports waypoint, route, and track log storage, includes a built-in electronic compass and barometric altimeter, and operates on 4 AA batteries. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: High-contrast LCD display, Power button, Rocker keypad, Enter/Mark button, Page button, Zoom buttons, External antenna port, Serial data port, Battery compartment.

Installation

Unpack and inspect contents. Ensure all parts are present.

1. Install batteries: Open battery compartment, insert 4 AA batteries observing polarity.
2. External antenna (optional): Connect to external antenna port for improved reception.
3. Data cable connection: Connect serial data port to PC for data transfer and map uploads.
4. Power on: Press and hold Power button to turn on unit.

WARNING! Use only recommended batteries. Do not mix old and new batteries. Ensure battery compartment is securely closed, especially before exposure to moisture.

First-Time Setup

Power on the GPS 3 Plus; follow on-screen prompts.

1. Acquire satellite signal: Go outdoors with a clear view of the sky. Unit will automatically search for satellites.
2. Set language: In the Main Menu > Setup > System, select language (default is ENGLISH).
3. Set units: Configure distance, elevation, speed, and north reference (True/Magnetic) to your preference.
4. Calibrate sensors: Follow on-screen instructions to calibrate the electronic compass and altimeter.
5. Initialize position: If prompted, use the rocker keypad to scroll to your approximate location on the map.

CAUTION! Initial satellite acquisition may take several minutes. Ensure you are in an open area away from tall buildings and dense tree cover.

Specifications

• Receiver: 12 parallel channels, WAAS-enabled.
• Display: High-contrast LCD, 4.2 x 2.2 inches, 160 x 288 pixels, backlit.
• Memory: 1 MB internal for map storage.
• Waypoints: 500 user-defined.
• Routes: 20 reversible routes with up to 50 waypoints each.
• Track Log: 10,000 points, 10 saved tracks.
• Sensors: Electronic compass, barometric altimeter.
• Interface: Serial data port (NMEA 0183, Garmin protocol).
• Power Source: 4 AA batteries (alkaline or NiMH). Approx. 20 hours use.
• Waterproof: IPX7 standard.
• Operating Temp: -15°C to 70°C (5°F to 158°F).

Controls and Settings

Access functions via the Page button and rocker keypad. Front Panel: Power button, Rocker keypad (up/down/left/right), Enter/Mark button, Page button, Zoom In/Out buttons.

Key Functions: POWER (On/Off), ENTER/MARK (confirms selection or marks current location as a waypoint), PAGE (cycles through main pages: Satellite, Map, Navigation, Menu), ZOOM (adjusts map scale).

Setup Menu: Access via Main Menu > Setup. Options include System (language, backlight time, tones), Navigation (route preferences, proximity alarms), Sensors (calibrate compass/altimeter), Interface (data format). Map Page: Displays current position on map. Navigation Page: Shows bearing, distance, speed, and ETA to destination. Satellite Page: Shows satellite signal strength and position accuracy.

Connecting Devices

PC Connection: Use Garmin PC Interface Cable (serial) to connect to computer's serial port for uploading maps and transferring waypoints/routes/tracks.

1. Turn off GPS unit before connecting cable.
2. Connect cable to GPS serial data port and computer's serial port.
3. Power on GPS unit. Set Interface mode to "GARMIN" or "Host" for data transfer.
4. Use Garmin MapSource software on PC to manage data.

Tip: Ensure you have the correct serial cable and that your PC has a functional serial port or a reliable USB-to-serial adapter.

Navigation Features

Supports waypoint navigation, route following, and trackback.

1. Mark a Waypoint: Press and hold ENTER/MARK button at desired location. Edit name/symbol and press ENTER to save.
2. Go To a Waypoint: From the Map or Menu page, select "Go To", choose a waypoint from the list, and select "Go".
3. Create a Route: Main Menu > Routes > New. Add stored waypoints in sequence to define the route.
4. Follow a Route: Select a saved route and choose "Navigate".
5. Trackback: Navigate > Trackback reverses your recorded track log to guide you back to your starting point.
6. Proximity Waypoints: Set an alarm to sound when you come within a specified distance of any waypoint.
7. Sun/Moon Information: Access from the Menu to view sunrise/sunset and moon phase data for your location.

WARNING! GPS accuracy can be affected by environmental factors. Always use common sense and traditional navigation methods as a backup. Do not rely solely on GPS for critical navigation.

Accessibility Features

Backlight: Adjustable brightness and timeout for low-light use. Audible Alerts: Can be enabled/disabled for proximity alarms and other notifications. Large Font Option: Some data fields can be configured for larger text.

Care & Cleaning

Remove batteries before extended storage. Clean exterior with a soft, damp cloth. Do not use harsh chemicals or solvents.

CAUTION! Ensure unit is completely dry and battery compartment seal is intact before exposing to moisture. Do not store in extremely hot or cold environments.

Regulatory Information

FCC Compliance: This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. Copyright © Garmin Ltd. or its subsidiaries. For support, visit www.garmin.com or contact Garmin Product Support.

Troubleshooting

Reset: To perform a master reset (erases all user data), power off. Press and hold ENTER/MARK + PAGE + POWER simultaneously until the unit beeps and the welcome screen appears.

Service: For technical support, visit www.garmin.com or contact your local Garmin dealer.