Garmin installation manual Audio Shield Termination, GMA 240 Installation

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3.3Audio Shield Termination

The audio shield wires should be terminated at the rear of the unit to the screws between J2401 and J2402 as shown in Figure 3-1.

Rear View of backplate and rack

J2402

J2401

Audio shields daisy chained and terminated using a lug attached to either of these screws.

Figure 3-1. Audio Shield Termination

3.4GMA 240 Installation

NOTE

Avoid installing the unit near heat sources. If this is not possible, ensure that additional cooling is provided. Allow adequate space for installation of cables and connectors. The installer will supply and fabricate all of the cables.

1.Assemble the connector/rack kit according to Tables 4-1, 4-2; and Figures B-1 and B-2. Install the rack assembly according to the dimensions given in Figures A-1 and A-3. Mounting brackets are not supplied due to the wide range of mounting configurations available. Suitable mounting brackets may be fabricated from sheet metal or angle stock. To ensure a sturdy mount, rear support for the unit should be provided.

2.Slide the unit into the rack until the jackscrew makes contact with the receptacle located in the back plate.

3.Insert a 3/32” Allen wrench into the jackscrew access hole on the faceplate.

4.Turn the Allen wrench clockwise until the unit is secured in the rack. Continue turning until tight, but do not over-tighten.

CAUTION

Do not use excessive force when inserting the GMA 240 into the rack. This may damage the connectors, unit, and/or unit rack. If heavy resistance is felt during installation, stop, and remove the GMA 240 and identify the source of resistance.

5.To remove the unit from the rack, turn the Allen wrench counterclockwise until it disengages from the rack.

Page 3-2

GMA 240 Installation Manual

Rev. A

190-00917-01

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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 DescriptionFeatures Summary Technical SpecificationsCharacteristic Specification Physical CharacteristicsElectrical Characteristics Reference Documents Power RequirementsPart Number Document Limited Warranty Blank Garmin P/N Installation MaterialsGMA 240 Wiring, Configuration, and Adjustment Options 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 RackElectrical Connections Unpacking UnitPositioner GMA 240 Installation Audio Shield TerminationFailsafe Operation Check Post Installation CheckoutLamp Test 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 Aircraft Power and Lighting3 P2403 Connector front panel 2.5 mm mini-jack Pin Connector Pin NameExternal Configuration Pins Configuration PinsPin Connector Pin Name Description COM Audio and Mic Keys Pin Connector Pin Name Description Intercom Key Inputs if configuredAudio Inputs/Outputs and Mic Keys Failsafe Warning Audio Pin Alert Audio I/O Pin Connector Pin Name DescriptionAUX and NAV Audio Inputs Pin Connector Pin Name Description Pin Name DescriptionHeadset Outputs Pin Connector Pin Name Description Tel Audio I/O 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.