Garmin GMA 240 installation manual Reference Documents, Part Number Document, Power Requirements

Page 12

 

Characteristic

 

 

Specification

 

 

 

 

 

 

Music Functions

Music inputs (stereo): 2

 

 

Music input impedance: 600 (differential)

 

 

Music gain: -20dB @ min volume, +26dB @ max. volume (typ.)

 

 

Music input level:<200 mVrms for full power* output @ max music

 

 

 

volume knob position (typ.)

 

 

 

3.5 Vrms max music input level

 

 

Music bandwidth: 20 Hz to 20 kHz @ full power output

 

 

Music distortion: <0.1% THD+N (typ.) @ full power, full bandwidth

 

 

Special Functions: Front panel selection and volume control

 

 

 

Front panel control for muting by radios and ICS

 

 

 

Muting by alerts configurable

 

 

*Full power output refers to 300 mW into 50 (three 150 headsets in parallel each

 

 

driven to 100 mW)

 

 

 

 

 

 

 

 

 

Front Panel Mini-

Input Impedance: 5.1 k

 

Jack Functions

Music Input: Auto detection of music source will use jack as Music 1

 

 

 

 

Telephone Input: Auto detection of TEL source will use jack for TEL

 

 

Telephone ring signal is heard without TEL selected

 

 

 

 

 

 

1.3.3 Power Requirements

 

 

 

 

 

 

 

 

 

Characteristic

 

Specification

 

 

 

 

 

 

 

 

Input Voltage Range

 

 

11 to 33 Vdc

 

 

 

 

 

 

 

 

Power Input

 

 

4.3 W normal operation (310mA @ 13.8 V)

 

 

 

 

 

7.5 W max. operation (540 mA @ 13.8 V)

 

 

 

 

 

 

 

1.4Reference Documents

The following publications are sources of additional information for installing the GMA 240. Before installing the unit, the technician should read all referenced materials along with this manual.

Part Number

 

Document

 

 

 

190-00917-00

GMA 240

Pilot’s Guide

 

 

 

190-00917-02

GMA 240

Maintenance Manual

 

 

 

Page 1-4

GMA 240 Installation Manual

Rev. A

190-00917-01

Image 12
Contents GMA Record of Revisions DescriptionInformation Subject to Export Control Laws Section RangeThis page intentionally left blank Table of Contents Appendix a Outline and Installation Drawings List of Illustrations GMA 240 Hardware MOD Level History Introduction Equipment DescriptionTechnical Specifications Characteristic SpecificationFeatures Summary Physical CharacteristicsElectrical Characteristics Power Requirements Reference DocumentsPart Number Document Limited Warranty Blank Installation Materials GMA 240 Wiring, Configuration, and Adjustment OptionsGarmin P/N Equipment AvailableComponent Name Default Description Internal Configuration JumpersVOLUME/MUTE Configuration Adjustments MusicAccess Hole Location Top View Hardwire Configuration OptionNoise GMA 240 Mounting GMA 340 Unit RackUnpacking Unit Electrical ConnectionsPositioner GMA 240 Installation Audio Shield TerminationPost Installation Checkout Lamp TestFailsafe Operation Check Transceiver Operational CheckAircraft Receivers Check Music System CheckConnector Description Pin List1 P2401 Connector J2401 Pin Assignments Pin Name 2 J2402 Connector J2402 Pin Assignments Pin Name Aircraft Power and Lighting 3 P2403 Connector front panel 2.5 mm mini-jackAircraft Power Pin Connector Pin NameConfiguration Pins External Configuration PinsPin Connector Pin Name Description Intercom Key Inputs if configured COM Audio and Mic Keys Pin Connector Pin Name DescriptionAudio Inputs/Outputs and Mic Keys Alert Audio I/O Pin Connector Pin Name Description AUX and NAV Audio Inputs Pin Connector Pin Name DescriptionFailsafe Warning Audio Pin Pin Name DescriptionTel Audio I/O Pin Connector Pin Name Description Headset Outputs Pin Connector Pin Name DescriptionCOM Swap Pin Connector Pin Name Description Appendix a Outline and Installation Drawings Figure A-2. GMA 240 Connector/Rack Assembly Drawing Figure A-3. GMA 240 Recommended Panel Cutout Dimensions Appendix B Interconnect Drawings Figure B-1. GMA 240 Interconnect Drawing page 2 Figure B-1. GMA 240 Interconnect Drawing page 3 GMA240 J2401 Top of Main Board Bottom of Main Board

GMA 240 specifications

The Garmin GMA 240 is a state-of-the-art audio panel designed specifically for aviation applications. This device is known for its advanced features, user-friendly interface, and superior sound quality, making it a popular choice among pilots and aircraft owners. One of the standout characteristics of the GMA 240 is its ability to integrate seamlessly with a variety of communication and navigation systems, enhancing situational awareness and streamlining cockpit operations.

One of the main features of the GMA 240 is its capability to manage multiple audio inputs. The panel provides independent volume controls for the pilot and co-pilot, allowing each to adjust their audio levels according to their preferences. Additionally, the GMA 240 offers a dedicated input for auxiliary devices, such as smartphones or tablet computers, facilitating music playback or calls during flight.

The GMA 240 also incorporates advanced noise reduction technology. This feature minimizes ambient noise interference, ensuring that communication between the crew and air traffic control is crystal clear. The panel is equipped with a digital processing function that enhances audio clarity and reduces background noise, a critical asset in the typically noisy environment of an aircraft cockpit.

Another noteworthy characteristic of the GMA 240 is its intuitive operation. The layout of the controls is logical and straightforward, allowing pilots to adjust settings quickly and efficiently without distraction. This ease of use is crucial, especially during high-pressure situations when pilots need to maintain focus on flying while managing audio communications.

The GMA 240 supports a wide range of aircraft configurations, making it a versatile choice for various aviation needs. It is designed to be compatible with both general aviation and commercial aircraft, further extending its usability in different environments. The panel meets rigorous safety standards, ensuring it can withstand the demands of aviation use.

In terms of installation, the GMA 240 is engineered for easy integration into existing cockpits, requiring minimal modifications. Its compact design and robust build quality ensure durability even in challenging flight conditions.

In summary, the Garmin GMA 240 audio panel stands out for its combination of advanced features, user-friendly design, and high-quality performance. With its excellent noise reduction capabilities, independent audio controls for each crew member, and broad compatibility, it is an essential tool for enhancing communication and safety in the cockpit. This audio panel continues to be a preferred choice for aviation professionals seeking reliability and efficiency.