Garmin GPS 750 User Manual

The Garmin GPS 750 is an advanced aviation GPS navigation system designed for general aviation aircraft. It features a high-resolution touchscreen display, integrated WAAS GPS/GLONASS receiver, terrain and obstacle awareness, traffic information display, weather datalink compatibility, flight planning capabilities, and supports approaches with LPV, LNAV/VNAV, and LNAV minima. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: High-resolution touchscreen display, Integrated WAAS GPS/GLONASS receiver, Terrain Awareness and Warning System (TAWS), Traffic Information Service (TIS), Weather datalink interface, Flight planning software.

Installation

Unpack and inspect contents. Ensure proper aircraft compatibility.

1. Mount unit: Secure in instrument panel using approved mounting kit.
2. Connect power: Attach to aircraft 10-32V DC power bus with appropriate circuit protection.
3. Connect antennas: Install GPS antenna with clear sky view; connect COM/NAV antennas if applicable.
4. Connect audio: Interface with aircraft audio panel for COM/NAV audio and intercom.
5. Connect datalink: Install and configure compatible ADS-B or SiriusXM receiver for weather/traffic.

WARNING! Installation must be performed by certified aviation technician. Ensure proper bonding and grounding.

First-Time Setup

Power on unit; follow initial configuration prompts.

1. Select language: Choose ENGLISH (default) or other available languages.
2. Configure units: Set navigation units (NM/km), altitude (feet/meters), and pressure (inHg/hPa).
3. Set time: Configure local time and date; enable automatic GPS time synchronization.
4. Calibrate sensors: Follow on-screen instructions for magnetometer calibration if applicable.
5. Load databases: Insert SD card with current aviation databases (navdata, obstacles, terrain).
6. Configure interfaces: Set up COM/NAV frequencies, transponder codes, and audio settings.

CAUTION! Ensure aircraft is stationary and in open area during initial GPS acquisition.

Specifications

• Display: 7-inch diagonal, sunlight-readable, capacitive touch LCD.
• GPS Receiver: WAAS-enabled, GPS/GLONASS, 10 Hz update rate.
• Approach Capability: LPV (0.3 NM, 200 ft DA), LNAV/VNAV, LNAV, +V, VOR, LOC.
• Terrain Database: Worldwide terrain and obstacle data.
• Traffic: TIS/FIS-B traffic with ADS-B In compatible.
• Weather: FIS-B weather via ADS-B In or SiriusXM.
• Power Requirements: 10-32V DC, 1.5A typical.
• Operating Temperature: -20°C to +55°C (-4°F to +131°F).
• Database Updates: Via SD card or Garmin Aviation Database Manager.

Controls and Settings

Access menus via touchscreen or optional external controls. Main Power: Rocker switch with backlight control.

Touchscreen: Tap to select, swipe to scroll, pinch to zoom maps. Soft keys: Direct access to frequently used functions.

Navigation: Map display, waypoint selection, flight plan editing. Communication: COM/NAV frequency management, audio panel control. Weather: Display NEXRAD, METARs, TAFs, winds aloft. Traffic: Show traffic targets with relative altitude and bearing. System: Setup menus for display, sensors, interfaces, databases. Safety: TAWS, traffic alert, airspace warnings configuration.

Connecting Devices

GPS Antenna: TNC connector. Audio: To aircraft audio panel. Datalink: To ADS-B or SiriusXM receiver.

1. Ensure aircraft power is OFF before making connections.
2. Use approved aviation-grade connectors and wiring.
3. Configure each interface in System > Interface settings.
4. Verify proper operation of connected devices.

Tip: Label all connections for future maintenance reference.

Flight Planning & Navigation

Supports VFR and IFR flight planning with integrated databases.

1. Create flight plan: Tap Flight Plan, enter departure, destination, and route waypoints.
2. Direct-to navigation: Tap Direct, enter waypoint identifier or select from map.
3. Approach selection: Tap Procedures, select arrival, approach, and missed approach.
4. Altitude planning: Enter cruise altitude for vertical navigation guidance.
5. Fuel planning: Enter fuel quantities for fuel remaining calculations.
6. Nearest airports: Tap Nearest for list of nearby airports with weather and facilities.
7. Airspace awareness: Display controlled airspace with altitude boundaries.
8. Traffic avoidance: Monitor traffic display and respond to resolution advisories.

WARNING! Always verify clearance and approach procedures with official sources. GPS is supplemental to proper flight planning.

Safety Features

Terrain Awareness: Color-coded terrain display with "Caution" and "Warning" alerts. Traffic Alerts: Visual and aural alerts for proximate traffic. Airspace Warnings: Alert when entering restricted or controlled airspace. Database Alerts: Notifications for database discrepancies or expired data.

Care & Cleaning

Power off before cleaning. Use microfiber cloth slightly dampened with water only. Do not use chemicals, solvents, or abrasive materials.

CAUTION! Never spray liquids directly on unit. Avoid extreme temperatures and moisture exposure.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. TSO-C146c: WAAS GPS Sensor. TSO-C151b: Terrain Awareness. Copyright © 2023 Garmin Ltd. or its subsidiaries. For support, visit www.garmin.com/aviation or contact Garmin Aviation Support at 1-800-800-1020. Database information © 2023 Jeppesen, provided under license.

Troubleshooting

Reset: System > Utilities > Restore Defaults if available (note: erases user settings).

Service: 1-800-800-1020; www.garmin.com/aviation