Garmin GPS765S Manual

The Garmin GPS765S is a high-precision marine GPS chartplotter with a 7-inch sunlight-readable display, built-in worldwide basemap, support for BlueChart g3 coastal charts, preloaded U.S. inland lakes, sonar capabilities (with compatible transducer), touchscreen interface, NMEA 2000 and 0183 connectivity, Wi-Fi for updates and ActiveCaptain integration, IPX7 waterproof rating, and advanced navigation features. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 7-inch capacitive touchscreen display, GPS/GLONASS receiver, internal memory, SD card slot, power/data cable, NMEA 2000 connector, transducer port.

Feature	Description
Display	7-inch WVGA (800 x 480 pixels) sunlight-readable touchscreen
GPS Receiver	High-sensitivity GPS/GLONASS with WAAS/EGNOS support
Charts	Built-in worldwide basemap, preloaded U.S. inland lakes, supports BlueChart g3
Sonar	Supports CHIRP traditional, ClearVü, and SideVü scanning sonar (transducer sold separately)
Connectivity	Wi-Fi, NMEA 2000/0183, USB port, SD card slot
Waterproof Rating	IPX7 (submersible to 1 meter for 30 minutes)
Power Input	10-32 V DC
Mounting	Includes bracket for flush, surface, or in-dash mounting
ActiveCaptain	Wireless integration for updates, smart notifications, and community data
Autopilot Compatibility	Compatible with Garmin Reactor™ autopilot systems

Installation

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

1. Mount the unit: Use provided bracket to mount on dash, console, or flush mount.
2. Connect power: Route power cable to battery (fuse protected). Connect red to positive (+), black to negative (-).
3. Connect NMEA 2000: Attach to onboard NMEA 2000 network for data sharing (optional).
4. Connect transducer: Plug compatible transducer into labeled port for sonar functionality.
5. Connect to Wi-Fi: Enable Wi-Fi in settings to connect to vessel's network for updates.

WARNING! Ensure all connections are waterproofed. Route cables away from moving parts and heat sources.

First-Time Setup

Power on unit; follow on-screen prompts.

1. Language/Region: Select language and set home region for charts.
2. GPS Acquisition: Allow unit to acquire satellite signal (may take several minutes first time).
3. Wi-Fi Setup: Connect to available Wi-Fi network for software updates and ActiveCaptain.
4. Chart Setup: Install additional BlueChart g3 maps via SD card or Wi-Fi if purchased.
5. Calibrate Sensors: Follow prompts to calibrate compass and water temperature sensor if connected.

CAUTION! Perform initial setup in open area with clear view of sky for best GPS signal.

Specifications

• Display Size: 7 inches diagonal.
• Display Resolution: 800 x 480 pixels.
• GPS: GPS/GLONASS with WAAS/EGNOS.
• Waterproof Rating: IPX7.
• Power: 10-32 V DC, 2 A max.
• Memory: Internal 16 GB, expandable via microSD card.
• Sonar Capability: CHIRP traditional (50/77/83/200 kHz), ClearVü, SideVü (with GT transducer).
• Communication: Wi-Fi (802.11 b/g/n), NMEA 2000, NMEA 0183 (high-speed), USB.
• Dimensions (WxHxD): 211 x 133 x 58 mm.
• Operating Temp: -15° to 55°C.

Controls and Settings

Primary interface via touchscreen. Physical buttons: POWER, VOLUME +/-.

Touchscreen Menus: Access via tapping icons or swiping from edges. Main screens: Chart, Sonar, Combination, Media.

Settings Categories: System (Language, Units, Backlight), Navigation (Route Planning, Alarms), Communications (Wi-Fi, NMEA), Sonar (Frequency, Range, Gain), Charts (Detail, Overlays).

Quick Access: Swipe down for notifications, brightness, volume. Swipe up for active route info.

Connecting Devices

NMEA 2000: Connect to network for engine data, wind, depth, autopilot. NMEA 0183: For legacy devices. Transducer: Plug into sonar port. Wi-Fi: For updates and ActiveCaptain.

1. Ensure unit is off before making connections.
2. Use marine-grade connectors and seal against moisture.
3. In Settings > Communications, configure NMEA sentences and data sources.

Tip: Label all cables during installation for easier troubleshooting.

Navigation & Chartplotting

Supports waypoints, routes, tracks, and advanced navigation.

1. Create Waypoint: Tap chart location, select "Mark Waypoint."
2. Plan Route: Tap Route tool, tap sequence of points on chart.
3. Follow Route: Select route, tap "Navigate."
4. Chart Layers: Enable/disable depth contours, nav aids, marinas, etc.
5. Tides & Currents: View tide stations and current flow data on chart.
6. Auto Guidance: Enter destination for suggested path based on vessel draft.
7. Man Overboard (MOB): Tap MOB button to instantly mark and navigate to position.

WARNING! Always verify chart data and use navigation aids as supplements to prudent seamanship.

Sonar & Fishfinding

With compatible GT-series transducer.

1. Select Sonar View: Tap Sonar or split-screen icon.
2. Adjust Frequency: Select CHIRP, ClearVü, or SideVü for desired detail.
3. Set Range: Auto or manual depth range.
4. Adjust Gain: Optimize for water conditions.
5. Fish Symbols: Enable/disable fish ID symbols.
6. Depth Alarms: Set shallow/deep water alarms.
7. Record Sonar: Log sonar data for later review.

Note: Sonar performance depends on transducer installation, water conditions, and boat speed.

Care & Maintenance

Use fresh water and mild soap to clean exterior. Use soft, lint-free cloth. Do not use abrasive cleaners or high-pressure spray.

CAUTION! Ensure connectors are sealed. Store in dry place when not in use for extended periods. Regularly check cable integrity.

Regulatory Information

FCC Compliance: This device complies with part 15 of the FCC Rules. Operation is subject to condition that device does not cause harmful interference. IC: Complies with Industry Canada license-exempt RSS standard(s). Contains transmitter module FCC ID: IPH-XXXXX. For support, visit www.garmin.com/support or contact Garmin Product Support at 1-913-397-8200 (U.S.).

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Blown fuse, loose connection	Check fuse (3 A); verify secure power connections at battery and unit.
Poor GPS signal	Obstruction, antenna issue	Ensure clear view of sky; check for physical damage to GPS antenna area.
Touchscreen unresponsive	Screen protector, calibration	Remove aftermarket screen protector; recalibrate touchscreen in settings.
No sonar display	Transducer, settings	Ensure transducer connected and submerged; check sonar source selection in settings.
Wi-Fi not connecting	Distance, password	Move closer to router; verify correct Wi-Fi password; restart unit.
Charts not displaying	SD card, region	Ensure SD card properly inserted; verify chart region matches location.

Reset: Settings > System > Reset > Restore Defaults (will erase user data).

Software Update: Connect to Wi-Fi and check Settings > System > Software Update.

Service: 1-913-397-8200; www.garmin.com/support