Garmin GPS II Plus User Manual

The Garmin GPS II Plus is a rugged, portable GPS receiver designed for outdoor navigation. It features a 12-parallel-channel GPS receiver, built-in worldwide basemap, waterproof construction (IPX7), track log with 10,000 point capacity, reversible mounting bracket, external antenna capability, and NMEA 0183 output. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Waterproof GPS receiver unit, Reversible mounting bracket, External antenna port, Power/data cable, Carrying case.

Installation

Unpack and inspect contents. Choose mounting location.

1. Mount unit: Attach reversible bracket to dashboard or overhead using adhesive or screws.
2. Connect power: Plug power/data cable into unit and connect to 12V DC power source.
3. External antenna (optional): Connect to external antenna port for improved reception.
4. Turn on unit: Press and hold POWER button.

WARNING! Ensure mounting surface is clean and dry. Do not mount in location that obstructs driver's view.

First-Time Setup

Power on GPS; follow on-screen prompts.

1. Initialize GPS: Allow unit to acquire satellite signals (may take several minutes first time).
2. Set language: In SETUP menu, select ENGLISH (default).
3. Set units: Choose nautical, statute, or metric units.
4. Set time: Configure time zone and format (12/24 hour).
5. Calibrate compass (if applicable): Follow on-screen instructions.

CAUTION! For best GPS reception, ensure clear view of sky during initialization.

Specifications

• Receiver: 12-parallel-channel GPS.
• Update Rate: 1 second continuous.
• Accuracy: Position: <15 meters RMS; Velocity: 0.1 knot RMS.
• Acquisition Time: Warm: ~15 seconds; Cold: ~45 seconds.
• DGPS Accuracy: 3-5 meters with DGPS corrections.
• Interface: NMEA 0183, RTCM 104 DGPS corrections.
• Waypoints: 500 with name and symbol.
• Routes: 20 reversible routes with 50 waypoints each.
• Track Log: 10,000 points, 10 saved tracks.
• Power: 12-40 VDC, 1.5W max.
• Waterproof: IPX7 standard.
• Operating Temp: -15°C to 70°C.
• Display: 5.6 x 3.6 cm, 100 x 160 pixels, backlit.

Controls and Settings

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

Display Pages: Satellite Status, Map, Navigation, Highway, Position.

Setup Menu: System (contrast, backlight, beeps), Units (nautical/statute/metric), Time (zone, format), Alarms (anchor, arrival, off-course), Interface (NMEA, RTCM). Navigation Settings: Route selection, track log settings, north reference (true/magnetic).

Connecting Devices

Power: 12V DC connection. External antenna: MCX connector. NMEA devices: Via power/data cable.

1. Turn off GPS before connecting devices.
2. Match cables to ports (red to positive, black to negative).
3. For NMEA output: Connect to compatible chartplotter or autopilot.
4. For DGPS: Connect to compatible beacon receiver.

Tip: Use marine-grade connectors for saltwater environments.

Navigation Features

Provides position, speed, course, and navigation data.

1. View position: Press PAGE to cycle to Position page.
2. Navigate to waypoint: Select GOTO from menu, choose waypoint.
3. Follow route: Select Routes from menu, choose route, activate navigation.
4. Track navigation: View Track page to see breadcrumb trail.
5. Highway page: For turn-by-turn navigation with steering guidance.
6. Alarms: Set anchor drag, arrival, and off-course alarms.
7. Man overboard: Press and hold GOTO to mark MOB position and navigate back.

WARNING! GPS is an aid to navigation. Always use in conjunction with proper charts and navigation skills.

Waypoints & Routes

Create and manage waypoints and routes for navigation.

1. Mark waypoint: Press and hold ENTER at current position.
2. Edit waypoint: Select from waypoint list, edit name, symbol, coordinates.
3. Create route: Select Routes > New, add waypoints in sequence.
4. Navigate route: Select route, choose GOTO or Follow.
5. Reverse route: Option to navigate route in opposite direction.
6. Track back: Navigate back along track log.

Tip: Use descriptive waypoint names for easy identification.

Care & Maintenance

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

CAUTION! Do not use harsh chemicals or abrasives. Ensure connectors are dry before connecting.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. 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: Press and hold PAGE + POWER while turning on for master reset (erases all user data).

Service: Contact Garmin Product Support or authorized service center.