Garmin GPS 111 Plus Manual

The Garmin GPS 111 Plus is a compact, rugged marine GPS receiver designed for precise navigation. It features a high-sensitivity GPS receiver, waterproof construction (IPX7), NMEA 0183 interface, external antenna capability, backlit display, waypoint navigation, track logging, and MOB (Man Overboard) function. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Navigation Functions 8. Advanced Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Waterproof GPS unit, external antenna port, NMEA 0183 data port, power cable, mounting bracket.

Feature	Description
GPS Receiver	High-sensitivity WAAS-enabled GPS
Waterproof Rating	IPX7 (submersible to 1 meter for 30 minutes)
Display	Backlit LCD with navigation data
NMEA 0183 Interface	For connection to chartplotters, autopilots
External Antenna Port	For optional external GPS antenna
Waypoints	Store and navigate to 500 waypoints
Tracks	Log up to 10,000 track points
MOB Function	Instant mark and navigation to man overboard position
Power Input	10-32V DC marine power
Mounting	Flush or bracket mount options

Installation

Unpack and inspect contents. Choose mounting location with clear view of sky.

Mount unit: Use provided bracket or flush mount template.
Connect power: Red wire to positive (+), black wire to negative (-).
Connect external antenna (optional): Screw antenna cable to external antenna port.
Connect NMEA devices: Wire NMEA 0183 output to compatible devices.
Secure all connections with marine-grade heat shrink tubing.

WARNING! Ensure power is off during installation. Use appropriate circuit protection.

First-Time Setup

Power on unit; allow GPS acquisition.

Initial satellite acquisition: Place unit with clear sky view; may take 5-15 minutes first time.
Set navigation units: Access SETUP menu to select nautical miles/statute miles/km.
Set position format: Select Lat/Lon, UTM, or other coordinate systems.
Set time: Configure time zone and daylight saving.
Calibrate compass (if applicable): Follow on-screen prompts.

CAUTION! Ensure proper ventilation around unit. Do not block antenna view.

Specifications

GPS Receiver: High-sensitivity, WAAS-enabled.
Update Rate: 1 second.
Accuracy: Position: <3 meters, Velocity: 0.1 knot.
Waypoints: 500 with name and symbol.
Tracks: 10,000 points, 10 saved tracks.
Interface: NMEA 0183 v3.01, 4800 baud.
Power: 10-32V DC, 1W typical.
Waterproof: IPX7 standard.
Operating Temp: -15°C to 70°C.
Dimensions: 3.5" x 2.2" x 1.5".

Controls and Settings

Front panel: POWER, ENTER, PAGE, UP/DOWN arrows. Display shows position, speed, course, waypoint info.

Menu Navigation: Press ENTER to access main menu: Waypoints, Routes, Tracks, Setup, Navigation.

Setup Menu: Units (nautical/statute/km), Position Format, Time, Alarms, System (backlight, beep, contrast). Navigation: GOTO waypoint, MOB, Route navigation, Trackback. Display: Data fields (configure which data appears on main screen).

Connecting Devices

NMEA 0183: Connect to chartplotters, autopilots, AIS receivers. External antenna: For improved reception.

Turn off all devices before connecting.
Connect NMEA OUT wires to other device's NMEA IN.
Connect NMEA IN wires to other device's NMEA OUT.
Use shielded cable for NMEA connections.
Select proper NMEA sentences in setup if configurable.

Tip: Keep NMEA cables away from power cables to reduce interference.

Navigation Functions

Basic navigation operations.

Mark waypoint: Press and hold ENTER at current position.
GOTO waypoint: Select waypoint from list, choose GOTO.
Follow route: Select route, choose NAVIGATE.
MOB: Press and hold MOB button (or dedicated key) to mark position and begin navigation back.
Track recording: Automatically records track when powered on.
Trackback: Navigate back along recorded track.
Sunrise/Sunset: Display times for current location.

WARNING! GPS is an aid to navigation. Always use traditional navigation methods as backup.

Advanced Features

NMEA Output: Configure which sentences are transmitted. Alarms: Anchor drag, arrival, off-course. Data Logging: Record position at intervals. System Diagnostics: View satellite status, signal strength.

Care & Maintenance

Clean with fresh water after saltwater use. Use mild soap and soft cloth. Do not use harsh chemicals.

CAUTION! Do not open unit; no user-serviceable parts inside. Store in dry place when not in use.

Regulatory Information

FCC ID: IPH-111PLUS. Complies with Part 15 of FCC rules. This device may not cause harmful interference and must accept any interference received. CE certified. Contains GPS technology subject to U.S. export controls. For support, visit www.garmin.com or contact Garmin Product Support.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power connection	Check fuse, wiring, voltage at unit.
No GPS fix	Antenna obstruction	Move to open area; check antenna connection.
Poor accuracy	Satellite geometry	Wait for better satellite alignment; ensure WAAS enabled.
NMEA not working	Wiring/configuration	Check wiring, baud rate (4800), NMEA sentence output.
Display dim	Backlight setting	Adjust contrast/backlight in setup menu.
Waypoints lost	Memory reset	Check battery backup; save waypoints regularly to external device.

Reset: Hold PAGE + ENTER while powering on for factory reset (erases all data).

Service: Contact Garmin Product Support or authorized service center.