Garmin GMA 35, GMA 35c Installation Manual

SPECIFICATION

REVISIONS

REV. DATE DESCRIPTION ECO NO.

CONTROL
DRAWING

NOTES:

1. DESCRIPTION: Installation Documentation

2. DISTRIBUTION: This document is intended for electronic distribution.

F 9/2/15 Added the GMA 35c 132290

G 10/2/15 Included FCC commetnts 133098
H 3/22/16 Added European Union and Brazil statements 139773

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190-00858-11.pdf

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Manual Elements FrameMaker, Formatted Files and Figures
*.* Various supporting illustrations, drawings, and artwork.

CONFIDENTIAL

This drawing and the specications contained herein are the property of Garmin
Ltd. or its subsidiaries and may not be reproduced or used in whole or in part as

the basis for manufacture or sale of products without written permission .

Date:

Drafter:

JGS

1/20/11

TITLE:

SIZE

A

Scale:

GMA 35 Installation Manual

PART NO:

190-00858-11

N/A

Garmin Ltd. or its subsidiaries

c/o Garmin International, Inc.

1200 E. 151st Street

Olathe, Kansas 66062 U.S.A.

Sheet of

REV.

H

1 1

GMA 35/35c

Installation Manual

190-00858-11 March, 2016 Revision H

© 2016

Garmin Ltd. or its subsidiaries

All Rights Reserved

Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, dis­seminated, downloaded or stored in any storage medium, for any purpose without the express prior written
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®

word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and

any use of such marks by Garmin is under license. Other trademarks and trade names are those of their
respective owners.

Garmin International, Inc.

1200 E. 151st Street

Olathe, KS 66062 USA

Telephone: [phone]

Aircraft On Ground (AOG) Hotline: [phone]

Aviation Dealer Technical Support Line (Toll Free): [phone]

www.garmin.com

Garmin (Europe) Ltd

Liberty House, Hounsdown Business Park

Southampton, Hampshire SO40 9LR U.K.

Phone: [phone]

Fax: [phone]

Aviation Support [phone]

RECORD OF REVISIONS

Revision

Revision

Date

Description

A 1/20/11 Production Release

B 5/10/11 Added new mechanical drawing

C 12/27/11 Added ETSO-2C35d and ETSO-C139

D 2/27/12 Corrected copilot headset pinout

E 3/9/15 Added software part numbers

F 9/2/15 Added the GMA 35c

G 10/2/15 Included FCC comments

H 3/22/16 Added European Union and Brazil statements

Page A GMA 35/35c Installation Manual
Revision H 190-00858-11

CURRENT REVISION DESCRIPTION

Revision

H

Page

Number(s)

ii TOC Added Declaration of Conformity

1-5 1.4.1

4-5 4.4 Corrected I/O designation

4-7

C-1 C Added breaker current rating guidance

C-3 C Added breaker note

Section

Number

4.5.4

4.5.5

Description of Change

Clarified TSO table and added boot block part
numbers

Corrected pin names

190-00858-11 GMA 35/35c Installation Manual
Rev. H Page i

INFORMATION SUBJECT TO EXPORT CONTROL LAWS

WARNING

NOTE

This document may contain information which is subject to the Export Administration Regulations
(“EAR”) issued by the United States Department of Commerce (15 CFR, Chapter VII Subchapter C) and
which may not be exported, released or disclosed to foreign nationals inside or outside the United States
without first obtaining an export license. The preceding statement is required to be included on any and all
reproductions in whole or in part of this manual.

Declaration of Conformity

Hereby, Garmin declares that this product is in compliance with the essential requirements and other
relevant provisions of Directive 1999/5/EC. To view the full Declaration of Conformity, go to

www.garmin.com

Anatel Warning

Este equipamento opera em caráter secundário, isto é, não tem direito a proteção contra interferência
prejudicial, mesmo de estações do mesmo tipo, e não pode causar interferência a sistemas operando em
caráter primário.

.

DEFINITIONS OF WARNINGS, CAUTIONS, AND NOTES

Limited Warranty

garmin.com/aviationwarranty

190-00858-11 GMA 35/35c Installation Manual
Rev. H Page ii

This product, its packaging, and its components contain chemicals known to the State of
California to cause cancer, birth defects, or reproductive harm. This Notice is being
provided in accordance with California's Proposition 65. If you have any questions or
would like additional information, please refer to our web site at www.garmin.com/prop65.

Throughout this document references made to the GMA 35 shall equally apply to the
GMA 35c except where specifically noted.

1 GENERAL DESCRIPTION ...........................................................................1-1

1.1 Introduction ..................................................................................................................... 1-1

1.2 Equipment Description.................................................................................................... 1-1

1.3 Technical Specifications.................................................................................................. 1-2

1.4 Certification.....................................................................................................................1-5

1.5 Reference Documents...................................................................................................... 1-6

1.6 Operating Instructions .....................................................................................................1-7

2 INSTALLATION OVERVIEW......................................................................2-1

2.1 Introduction ..................................................................................................................... 2-1

2.2 Installation Materials....................................................................................................... 2-1

2.3 Installation Considerations.............................................................................................. 2-2

2.4 Cabling & Wiring...........................................................................................................2-4

2.5 Cooling Air......................................................................................................................2-4

2.6 Mounting Requirements.................................................................................................. 2-5

2.7 Installation Approval Considerations for Pressurized Aircraft .......................................2-6

2.8 Electrical Noise................................................................................................................ 2-6

3 INSTALLATION PROCEDURE...................................................................3-1

3.1 Unpacking Unit................................................................................................................ 3-1

3.2 Antenna Installation......................................................................................................... 3-1

3.3 Antenna Cable Connectors.............................................................................................. 3-1

3.4 Electrical Connections..................................................................................................... 3-1

3.5 Backshell Assembly ........................................................................................................ 3-2

3.6 GMA 35 Unit Installation................................................................................................ 3-3

3.7 Post Installation Configuration & Checkout ................................................................... 3-4

3.8 Continued Airworthiness................................................................................................. 3-6

4 SYSTEM INTERCONNECTS........................................................................4-1

4.1 Pin List............................................................................................................................. 4-1

4.2 Power...............................................................................................................................4-5

4.3 Serial Data .......................................................................................................................4-5

4.4 Lighting ........................................................................................................................... 4-5

4.5 Audio Inputs and Outputs................................................................................................ 4-6

4.6 Music Inputs .................................................................................................................. 4-10

4.7 Mic Keys........................................................................................................................ 4-10

4.8 Marker Beacon ..............................................................................................................4-11

4.9 Miscellaneous Configurable I/O.................................................................................... 4-12

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Appendix A INSTALLATION CONSIDERATIONS FOR UPGRADING

FROM A GARMIN GMA 340...........................................................................A-1

A.1 Mechanical Considerations............................................................................................ A-1

A.2 Electrical Considerations............................................................................................... A-1

Appendix B OUTLINE AND INSTALLATION DRAWINGS .....................B-1

Appendix C INTERCONNECT DRAWINGS ................................................C-1

190-00858-11 GMA 35/35c Installation Manual
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The following table identifies hardware modification (Mod) Levels for the GMA 35. Mod Levels
are listed with the associated service bulletin number, service bulletin date, and the purpose of the
modification. The table is current at the time of publication of this manual (see date on front cover) and is
subject to change without notice. Authorized Garmin Sales and Service Centers are encouraged to access
the most up-to-date bulletin and advisory information on the Garmin Dealer Resource web site at
www.garmin.com using their Garmin-provided user name and password.

GMA 35 HARDWARE MOD LEVEL HISTORY

MOD

LEVEL

SERVICE

BULLETIN

NUMBER

SERVICE

BULLETIN

DATE

PURPOSE OF MODIFICATION

190-00858-11 GMA 35/35c Installation Manual
Rev. H Page v

1 GENERAL DESCRIPTION

NOTE

NOTE

1.1 Introduction

This manual is intended to provide mechanical and electrical information for use in the planning and
design of an installation of the GMA 35 into an aircraft. This manual is not a substitute for an approved
airframe-specific maintenance manual, installation design drawing, or complete installation data package.
Attempting to install equipment by reference to this manual alone and without first planning or designing
an installation specific to your aircraft may compromise your safety and is not recommended. The content
of this manual assumes use by competen t and qua lif ied avionics engineering personnel and/or avionics
installation specialists using standard aviation maintenance practices in accordance with Title 14 of the
Code of Federal Regulations and other relevant accepted practices. This manual is not intended for use by
individuals who do not possess the competencies and abilities set forth above.

Garmin recommends installation of the GMA 35 by a Garmin-authorized installer. To the
extent allowable by law , Garmin wi ll not be liable for damages r esulting from improper or
negligent installation of the GMA 35. For questions, please contact Garmin Aviation
Product Support at 1-888-606-5482.

In accordance with Title 47; Part § 15.203 of the FCC regulations, the GMA 35c must be
professionally installed in accordance with this Installation Manual. The GMA 35c is
designed only to be used within an aircraft and integrated into the avionics system. The
installer is responsible for ensuring that the proper Bluetooth antenna is installed so that
the limits in this part are not exceeded. Installation of the GMA 35c may only be
completed by Garmin authorized dealers under the agreement that only dealer installed
units may be sold.

1.2 Equipment Description

The Garmin GMA 35 is a remote-mount audio processor and marker beacon system that collects,
processes, and distributes audio signals between avionics, crew, and passengers. The GMA 35 provides the
same functions as an audio panel and can be configured to support a wide range of aircraft. The GMA 35
uses RS-232 to communicate with the control unit.

The GMA 35 is a high-fidelity digital audio product with improved circuitry that make audio signals less
prone to noise (e.g. whining sound of an alternator or blip sound from a radar). At the GMA’s core is a
digital signal processor (DSP) that cleans up audio using advanced filtering techniques and provides VOX
control for mic inputs. On the outputs, the GMA 35 features high-quality digital-to-analog converters and
headset amplifier circuits that are used to minimize noise and distortion.

The GMA 35 provides a speaker output that may be used as a cockpit speaker or for a PA system to
address passengers. The GMA 35 also includes a digital recording and playback feature. The GMA 35
allows ICS volume adjustments for pilot, copilot, and passenger. Depending on the installation there are
additional volume adjustment for all inputs (MKR, AUX, MUSIC, and TEL sources).

The GMA 35c includes Bluetooth
stream audio and make phone calls. The GMA 35c also connect wirelessly to the VIRB XE, eliminating
the need to install a headset audio cable.

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®

technology, used to wirelessly connect smartphones and tablets to

1.2.1 Interface Summary

• Behind-the-panel mounting for panel space savings

• Configurable without removal from installation

• Telligence

TM

Voice Command and voice feedback

• Supports both DSP intercom auto-squelch and manual intercom squelch modes

• DSP audio processing for low noise, high fidelity, highly configurable and upgradable operation

• Six/Seven position intercom (pilot, copilot, four/five passengers)*

• Remote toggling of passenger isolation supported (passengers can change their ICS ISO state)

• User selectable MUSIC/TEL input distribution to ICS positions independent of isolation modes

• Clearance recorder with playback

• Individual processi ng of muting thresho lds for inputs to reduce noise from wiring

• Marker beacon receiver with SmartMute audio muting

• COM swap/cycle input

• PA mode for keyed addressing to speaker and headsets

• Power-off fail safe connection for Pilot PTT, Pilot mic, and Pilot’s Headset-Left to COM 1

• Bluetooth audio streaming (GMA 35c only)

• Bluetooth telephone integration (GMA 35c only)
*Depends on configuration settings

1.3 Tech nical Specifications

It is the responsibility of the installing agency to obtain the latest revision of the GMA 35 Environmental
Qualification Form. This form is available directly from Garmin under the following part number:

GMA 35 Environmental Qualification Form, Garmin part number 005-00567-01

To obtain a copy of this form, see the dealer/OEM portion of the Garmin web site (www.garmin.com).

1.3.1 Physical Characteristics
Table 1-1. GMA 35 Physical Characteristics

Characteristic Specification

Rack Height 1.48 inches (37.6 mm)

Rack Width 6.29 inches (159.8 mm)

-00 Weight (Unit Only)

-20 Weight (Unit Only) 1.3 lb (0.6 kg)

-40 Weight (Unit Only) 1.3 lb (0.6 kg)

-00 Weight (Installed with rack and
connectors)

-20 Weight (Installed with rack and
connectors)

-40 Weight (Installed with rack, connectors,
and antenna)

1.4 lb (0.6 kg)

2.2 lb (1.0 kg)

2.1 lb (1.0 kg)

2.2 lb (1.0 kg)

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1.3.2 Electrical Characteristics

Table 1-2. GMA 35 Electrical Characteristics

Characteristic Specification

Environmental Compliance RTCA DO-160E and EUROCAE ED-14E Environmental Conditions

Software Compliance RTCA DO-178B Level C and D

Temperature Range

-45°C to +55°C (normal operation)

-55°C to +70°C (short term)

Altitude 55,000 Feet

Transceiver inputs: 3
Receiver inputs: 5

Audio Panel Functions

Alert (unswitched) inputs: 5
Input impedance: 600 Ω
Input isolation: 60 dB minimum
Maximum input signal: 5 Vrms

Positions: 6 or 7 (pilot, copilot, 4 or 5 passengers)*

ICS volume controls: 3 (pilot, copilot, passenger)

Intercom Functions

VOX processing: individual processing for each mic input

ICS auto-squelch/VOX: independent DSP determined thresholds for

each mic

Stereo HiFi music inputs: 2

Telephone interfaces: 1

Entertainment Functions

Music and TEL sources individually distributable independent of ICS modes to allow
any combination of source to ICS position distribution.

Combined with independent ICS mode selection, any ICS position can have private
TEL conversations or conference conversations of any combination.

Bluetooth (GMA 35c only) A2DP, HFP

Output amplifiers: 3 stereo (pilot, copilot, passengers)

Power, Load, and Distortion: 65 mW into 150 Ohms with <10%

Headphone Outputs

Typical Operating Distortion: <1% THD+N

THD+N @ 10% output <3% THD+N

3dB Frequency Response Bandwidth: 20 Hz to 20 kHz for Music

350 Hz to 6.5 kHz for Other Audio (MICs, Radios, Alerts)

Frequency: Crystal controlled at 75 MHz

Sensitivity: LO 1000 ìV hard; HI 200 ìV hard

Selectivity: 6 dB @ ±10 kHz min, 40 dB @ ±200 kHz max.

Marker Beacon Receiver

Input impedance: 50 Ω

External lamp drive: 125 mA max each output

Other outputs: Middle MKR sense

Special functions: SmartMute

*Depends on configuration settings.

TM

marker audio muting

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Table 1-3. GMA 35 Speaker Output (1 output, pilot selectable)

Aircraft Voltage Speaker Impedance Output Power

14V 8 Ohms Not recommended

14V 4 Ohms 3 W

28V 8 Ohms 7 W

28V 4 Ohms 10 W

Distortion: <10% THD+N full power, <3% THD+N @ 10% power
3dB Frequency Response Bandwidth: 350 Hz to 6.5 kHz

1.3.3 Power Requirements

Table 1-4. GMA 35 Power Requirements

Characteristic Specification

14 Vdc or 28 Vdc. See the Environmental Qualification Form for

Power Input Voltage

Power Consumption

details on surge ratings and minimum/maximum

operating voltages.

0.8 A @ 14 V (typical)

1.5 A @ 14 V (maximum)

0.4 A @ 28 V (typical)

1.0 A @ 28 V (maximum)

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1.4 Certification

The conditions and tests required for TSO/ETSO approval of this article are minimum performance
standards. It is the responsibility of those installing this article either on or within a specific type or class of
aircraft to determine that the aircraft installation conditions are within the TSO/ETSO standards.
TSO/ETSO articles must have separate approval for installation in an aircraft. The article may be installed
only if performed under 14 CFR part 43 or the applicable airworthiness requirements.

1.4.1 TSO/ETSO Compliance

Table 1-5. GMA 35 (011-02299-00) TSO/ETSO Compliance

Applicable

LRU Boot

Block Part

Numbers

All

006-B0772-B(_)

except

006-B0772-BA

and all

006-B0773-B(_)

except

006-B0773-BA

Function TSO/ETSO Category

Airborne Radio Marker
Receiving Equipment

Aircraft Audio Systems and
Equipment

TSO-C35d A

ETSO-2C35d

TSO-C139

ETSO-C139

Class Ib

Applicable LRU

SW Part
Number

006-B0772-0(_)
006-B0772-5(_)

006-B0773-0(_)
006-B0773-5(_)

Table 1-6 GMA 35 (011-02299-20) and GMA 35c (011-02299-40) TSO/ETSO Compliance

Applicable

LRU Boot

Block Part

Numbers

All

006-B2013-B(_)

except

006-B2103-BA

through

006-B2103-BD

and all

006-B2104-B(_)

except

006-B2104-BA

through

006-B2104-BD

Function TSO/ETSO Category

Airborne Radio Marker
Receiving Equipment

Aircraft Audio Systems and
Equipment

Applicable LRU

SW Part
Number

TSO-C35d A

006-B2103-0(_)
006-B2104-0(_)

TSO-C139 Class Ib

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1.4.2 TSO/ETSO Deviations

Table 1-7. GMA 35 (011-02299-00) TSO/ETSO Deviations

TSO/ETSO Deviation

TSO-C35d 1. Garmin was granted a deviation from TSO-C35d to use FAR §21.607(d)

instead of FAR §37.7 as the general rules governing holders of the TSO

authorizations.

2. Garmin was granted a deviation from TSO-C35d to use RTCA DO-160E

instead of RTCA DO-138 as the standard for Environmental Conditions and

Test Procedures for Airborne Equipment.

ETSO-2C35d 1. Garmin was granted a deviation from ETSO-2C35d which calls out

EUROCAE 1/WG7 Section 3.16.

TSO-C139 1. Garmin was granted a deviation from TSO-C139 paragraph 7a.

2. Garmin was granted a deviation from TSO-C139 paragraph 7b.

Table 1-8 GMA 35c (011-02299-20 and -40) TSO/ETSO Deviations

TSO/ETSO Deviation

TSO-C35d 1. Garmin was granted a deviation from TSO-C35d to use FAR §21.607(d)

instead of FAR §37.7 as the general rules governing holders of the TSO

authorizations.

2. Garmin was granted a deviation from TSO-C35d to use RTCA DO-160E

instead of RTCA DO-138 as the standard for Environmental Conditions and

Test Procedures for Airborne Equipment.

TSO-C139 1. Garmin was granted a deviation from TSO-C139 paragraph 7a.

2. Garmin was granted a deviation from TSO-C139 paragraph 7b.

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1.4.3 Non-TSO Functions

These function were tested to RTCA/DO-160E environmental qualifications and were demonstrated only
when the GMA 35 is installed as a component of a Garmin Integrated Flight Deck.

Table 1-9. GMA 35 Non-TSO Functions

Applicable LRU

Functions Design Assurance

Automatic Speech Recognition (ASR) RTCA/DO-178B Level D

Software Part

Numbers

006-B0772-0(_)
006-B0772-5(_)
006-B0773-0(_)
006-B0773-5(_)
006-B2103-0(_)
006-B2104-0(_)

Wireless Data Conversion RTCA/DO-178B Level E

006-B2103-0(_)
006-B2104-0(_)

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1.4.4 Transmitter Grant of Equipment Authorization

NOTE

NOTE

FCC ID: IPH- 0163700
IC: 1792A-0163700
IC M/N: GMN-00831

This device complies with Part 15 of the FCC rules. Operation is subject to the following
conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference which may cause undesired
operation.

This device does not contain any user-serviceable parts. Repairs should only be made by
an authorized Garmin service center. Unauthorized repairs or modifications could result
in permanent damage to the equipment, and void your warranty and your authority to
operate this device under Part 15 regulations.

Industry Canada Statement

This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the
following two conditions: (1) this device may not cause interference, and (2) this device must accept any
interference, including interference that may cause undesired operation of the device.

Cet appareil est conforme aux normes RSS sans licence d’Industrie Canada. Son fonctionnement est
soumis aux conditions suivantes: (1) cet appareil ne doit pas causer d’interférences et (2) doit accepter
toute interférence,y compris les interférences pouvant entraîner un fonctionnement indésirable de
l’appareil.

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and
maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio
interference to other users, the antenna type and its gain should be so chosen that the equivalent
isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.

Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une
antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans
le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir
le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse
pas l'intensité nécessaire à l'établissement d'une communication satisfaisante.

This radio transmitter (IC: 1792A-0163700) has been approved by Industry Canada to operate with the
antenna types listed below with the maximum permissible gain and required antenna impedance for each
antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum
gain indicated for that type, are strictly prohibited for use with this device.

Le présent émetteur radio (IC: 1792A-0163700) a été approuvé par Indu strie Canada pour fonctionner avec
les types d'antenne énumérés ci-dessous et ayant un gain admissible maximal et l'impédance requise pour
chaque type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est supérieur au gain
maximal indiqué, sont strictement interdits pour l'exploitation de l'émetteur.

Antenna Type: 2.4 GHz Rubber Duck Stub Antenna - Rigid 90° RP-SMA Plug
Antenna Gain: 0 dBi

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RF Exposure Compliance Statement

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with minimum distance 20cm between the radiator and
your body. This transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.

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