Garmin | GMA™ 345 | Garmin GMA™ 345 GMA 345 Pilot's Guide

Garmin GMA™ 345 GMA 345 Pilot's Guide
GMA 345
pilot’s guide
Copyright © 2016-2018 Garmin Ltd. or its subsidiaries. All rights reserved.
This manual reflects the operation of GMA 345 units. Some differences in operation
may be observed when comparing the information in this manual to earlier or later
Mod status levels.
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February, 2018
190-01878-01 Rev. C
Printed in the U.S.A.
AVIATION LIMITED WARRANTY
All Garmin avionics products are warranted to be free from defects in materials
or workmanship for the earlier of: 2 years or 800 flight hours from the date of
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For assistance in locating a Service Center near you, visit the Garmin Web site at
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CAUTION: Incorrect aircraft wiring could short the left channel or
both channels to ground if a monaural headset is plugged into
the stereo jacks. If wired incorrectly, fail-safe operation will not
work.
Transmitter Grant of Equipment Authorization
FCC
Contains FCC ID: QOQWT32I
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC RF Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. End users must follow the specific operating instructions for satisfying
RF exposure compliance. This transmitter meets both portable and mobile limits as
demonstrated in the RF Exposure Analysis. This transmitter must not be co-located or
operating in conjunction with any other antenna or transmitter except in accordance
with FCC multi-transmitter product procedures.
IC
Contains IC: 5123A-BGTWT32I
NOTE
This device complies with Innovation, Science and Economic Development 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 du ministére Innovation,
Sciences et Développement économique Canada. Son fonctionnement est soumis aux
deux conditions suivantes : (1) ce périphérique ne doit pas causer d’interférences et
(2) doit accepter toute interférence, y compris les interférences pouvant entraîner un
fonctionnement indésirable de l’appareil.
Anatel Warning
Este equipamento não tem direito ã proteção contra interferência prejudicial e não
pode causar interferência em sistemas devidamente autorizados.
Declaration of Conformity
Hereby, Garmin declares that this product is in compliance with the Directive
2014/53/EU. The full text of the EU declaration of conformity is available at the
following internet address: www.garmin.com/compliance.
Radio frequency/protocol: Bluetooth® wireless technology 2.4 GHz @ -0.49 dBm
nominal
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Part Number
190-01878-01
Rev
Date
A July, 2016
Change Summary
Initial release
Description
Production Release
B
September, 2017
Updated compliance statements
C
February, 2018
Added ANATEL regulation, SLA, reference to GMA 345
3-COM, and updated labeling error.
Table of Contents
Power-Up................................................................................................................................................10
Mono/Stereo Headsets............................................................................................................................10
Left/Right Knobs.....................................................................................................................................10
Transceivers............................................................................................................................................11
Split-COM Mode.........................................................................................................................12
Transmit Indications....................................................................................................................12
Enabling/Disabling Monitored COM Muting...............................................................................12
Receivers.................................................................................................................................................14
Nav Receiver...............................................................................................................................14
Auxiliary Inputs...........................................................................................................................14
Marker Beacon Receiver..............................................................................................................15
Turning Marker Beacon Audio On....................................................................................16
Muting Marker Beacon Audio..........................................................................................16
Deselecting Marker Beacon Audio...................................................................................16
Intercom System (ICS).............................................................................................................................16
Pilot Isolate Mode...........................................................................................................17
Crew Isolate Mode..........................................................................................................17
Intercom Volume.........................................................................................................................17
Radio Mute Music.......................................................................................................................17
ICS Mute Music...........................................................................................................................18
Passenger Muting........................................................................................................................18
Speaker.......................................................................................................................................18
Passenger Address Mode (PA Mode)...............................................................................18
Split-PA Mode.................................................................................................................19
3D Audio.................................................................................................................................................19
Enabling 3D Audio.......................................................................................................................19
Clearance Recorder and Player...............................................................................................................22
Entertainment Inputs..............................................................................................................................23
Music Effects...............................................................................................................................25
Entertainment Muting.................................................................................................................25
Enabling/Disabling Muting..............................................................................................25
Bluetooth®..................................................................................................................................25
Pairing a Bluetooth Device..............................................................................................26
Pairing to a Garmin VIRB X or VIRB XE Action Camera....................................................27
Pairing To A Third-Party Camera.......................................................................................27
Disabling Bluetooth.........................................................................................................28
Bluetooth Media Controls...............................................................................................28
Bluetooth Telephone Volume Controls.............................................................................28
USB Power Jack.......................................................................................................................................29
Fail-Safe Operation.................................................................................................................................29
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Garmin GMA 345 Pilot’s Guide
190-01878-01 Rev. C
GMA 345 Audio Panel
FEATURES AND OPERATION
The GMA 345 Audio Panel provides the traditional audio selector functions
of microphone and receiver audio selection. The Audio Panel includes an
intercom system (ICS), a marker beacon receiver, a COM clearance recorder,
USB power jack, and Bluetooth® audio. Ambient noise from the aircraft
radios is reduced by Avionics Squelch (ASQ). When no audio is detected,
ASQ processing further reduces the amount of background noise. Intercom
squelch threshold adjustments are handled automatically by the system.
Pushbutton keys control audio selection. When a key is selected, a green
annunciator on the key is illuminated. Annunciator brightness is adjusted
automatically by photocell dimming. Key brightness is adjusted by the radio
dimming bus control. Three Aux inputs are available for additional avionics
or audio devices.
Upon installation, the unit may be configured in various ways depending
on aircraft type and the needs of the pilot.
Ambient Light Sensor
Bluetooth Annunciator
Marker Beacon Lights
USB Jack Type A
GMA 345
190-01878-01 Rev. C
Garmin GMA 345 Pilot’s Guide
9
GMA 345 Audio Panel
NOTE: The 3-COM version of the GMA 345 (below) is described in the
GMA 345 3-COM Pilot’s Guide (Part Number: 190-01878-05).
GMA 345 (3-COM) User Interface
POWER-UP
The GMA 345 performs a self-test during power-up. During the selftest all Audio Panel annunciator lights illuminate for approximately two
seconds. Once the self-test is completed, most of the settings are restored
to those in use before the unit was last turned off.
MONO/STEREO HEADSETS
Stereo headsets are recommended when using the GMA 345. Using a
monaural headset in a stereo jack shorts the right headset channel output to
ground. While this does not damage the Audio Panel, a person listening on
a monaural headset hears only the left channel in both ears. If a monaural
headset is used at one of the passenger positions, any other passenger using
a stereo headset hears audio in the left ear only.
LEFT/RIGHT KNOBS
The Left Inner Knob powers-off the unit, and is used to control pilot
ICS volume. The Left Outer Knob controls pilot music volume. The Right
Inner Knob controls copilot and passenger ICS volume. The Right Outer
Knob controls the copilot and passenger music volume.
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Garmin GMA 345 Pilot’s Guide
190-01878-01 Rev. C
GMA 345 Audio Panel
Left
Outer
Knob
Left
Inner
Knob
Right
Inner
Knob
Left Knob - Pilot
Volume Controls
Right Knob - Copilot and
Passenger Volume Controls
Visual/Tactile
Feedback
Turn Left Inner Knob
All backlight
Power
OFF Audio to full counter-clockwise and annunciator
Panel
position
LEDs turn off
Minimum/maximum
Turn Left Inner Knob
volume is reached at
Pilot ICS
right/left to increase/
Volume
full counter-clockwise/
decrease volume
clockwise position
Minimum/maximum
Turn Left Outer Knob
volume is reached at
Pilot Music
right/left to increase/
Volume
full counter-clockwise/
decrease volume
clockwise position
Minimum/maximum
Copilot/ Turn Right Inner Knob
volume is reached at
Passenger right/left to increase/
full counter-clockwise/
ICS Volume decrease volume
clockwise position
Minimum/maximum
Copilot/
Turn Right Outer Knob
volume is reached at
Passenger
right/left to increase/
Music
full counter-clockwise/
decrease volume
Volume
clockwise position
Function
Right
Outer
Knob
Action
Aural Feedback
Left Inner Knob
clicks
Pilot ICS volume
increases/
decreases
Pilot Music
volume increases/
decreases
Copilot and
Passenger ICS
volume increases/
decreases
Copilot and
Passenger Music
Volume increases/
decreases
Left/Right Knob Functions
190-01878-01 Rev. C
Garmin GMA 345 Pilot’s Guide
11
GMA 345 Audio Panel
TRANSCEIVERS
Audio from the #1 or #2 COM receiver can be selected independently
by pressing the respective Key(s) (COM1 or COM2). Pressing COM1 MIC
or COM2 MIC selects the #1 or #2 transmitter and simultaneously selects
the related COM receiver (COM1 or COM2) allowing received audio to be
heard. The other COM receiver can be added by pressing the respective
key.
By default, while transmitting on a COM channel (as selected with the
COM1 MIC and COM2 MIC keys), both the transmitting and receiving
audio are heard on the COM channel. The GMA 345 can be configured to
instead mute receiving audio on a transmitting COM channel. A Garmin
authorized service center can make changes to the default configuration.
SPLIT-COM MODE
NOTE: Split COM performance is affected by the distance between
the COM antennas and the separation of the tuned frequencies. If the
selected COM frequencies are too close together, interference may be
heard during transmission on the other radio.
During Split-COM operation, both the pilot and the copilot can transmit
simultaneously over separate radios. The pilot uses COM1 and the copilot
uses COM2
Pressing both MIC Keys simultaneously initiates Split-COM Mode (i.e.,
COM1/COM2). The respective COM1/COM1 MIC and COM2/COM2
MIC annunciators are illuminated indicating Split-COM operation. SplitCOM operation is cancelled by pressing one of the selected MIC Keys
again.
TRANSMIT INDICATIONS
During COM transmission, the active transceiver (MIC1 or MIC2) Key
Annunciator flashes approximately once per second.
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Garmin GMA 345 Pilot’s Guide
190-01878-01 Rev. C
GMA 345 Audio Panel
During Split-COM transmission, the MIC1 annunciator flashes when
the pilot’s microphone PTT is pressed. The MIC2 annunciator flashes
when the copilot’s microphone PTT is pressed.
ENABLING/DISABLING MONITORED COM MUTING
Press and hold COM1 or COM2 to enable/disable monitored COM
muting during reception of audio from the COM radio selected for
transmission. The aural message “Monitor Mute Enabled/Disabled” is
heard.
Function
Action
COM Selection: Toggle
between COM enabled and
Press the
COM disabled (the audio from
corresponding COM
the current MIC selected COM
Key.
is always enabled and cannot
be disabled).
Key Annunciations
COM
Enabled
COM
Disabled
Press the
corresponding MIC
MIC Selection: Selects the
Key. The last MIC
COM used to transmit during
pressed remains
Push-to-Talk (PTT).
selected and
deselects all others.
MIC Enabled MIC Disabled
Transmit Indication: Audio
is sent from the corresponding Push-to-Talk (PTT)
Crew MIC to the selected
keyed.
COM. *
190-01878-01 Rev. C
Garmin GMA 345 Pilot’s Guide
MIC in-key
annunciator
flashes.
13
GMA 345 Audio Panel
Function
Action
Split-COM Mode: The pilot
transmits on COM1 and the
copilot transmits on COM2
independently.
Simultaneously press
COM1 MIC and
COM2 MIC keys.
Key Annunciations
* The pilot has priority when transmitting in the case that both crew members attempt to transmit
on the same COM.
Transceiver Key Functions
RECEIVERS
NAV RECEIVER
Pressing the NAV1 and/or NAV2 Key(s) selects/deselects the receiver audio
for the corresponding navigation radio source. The selected audio source
can be heard over the headset and the speaker (if selected). All radios can
be selected individually or simultaneously.
Selecting a NAV Radio Receiver
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Garmin GMA 345 Pilot’s Guide
190-01878-01 Rev. C
GMA 345 Audio Panel
AUXILIARY INPUTS
The GMA 345 has 3 AUX inputs. There are two keys on the unit for
AUX1 and AUX2. Pressing the AUX1 key selects or deselects both the
AUX1 and AUX3 receivers. Pressing the AUX2 key selects or deselects
only the AUX2 receiver.
Selecting an Auxiliary Input
MARKER BEACON RECEIVER
The marker beacon receiver detects any marker beacon signal within
the reception range of the aircraft.
When a marker beacon signal is detected, the lamps illuminate, and
an associated keyed-tone is heard when MKR audio is selected. Marker
beacon lamps operate independently of any audio selection and cannot
be turned off.
Marker Beacon Key & Lamps
HI SENS Annunciator
The marker beacon signal sensitivity threshold can be set to either a
regular or high sensitivity. To toggle between the two, press and hold the
MKR/MUTE Key for one second. The HI SENS annunciator illuminates
when signal sensitivity is set to high.
190-01878-01 Rev. C
Garmin GMA 345 Pilot’s Guide
15
GMA 345 Audio Panel
The receiver detects the three marker tones (outer, middle, and inner).
Audio
Frequency
400 Hz
(Outer)
1300 Hz
(Middle)
3000 Hz
(Inner)
Audio Keying
−−−−−
−−−−−

Lamp Actuated
Blue
Amber
White
The GMA 345 provides three states of marker beacon operation; On,
Muted, and Deselected. The MKR/MUTE key annunciator indicates when
marker beacon audio is selected. Marker beacon audio is not heard when
the annunciator is off or when the annunciator is on with the marker
beacon audio muted.
Turning Marker Beacon Audio On
With the MKR/MUTE annunciator off, press the MKR/MUTE Key
to activate marker beacon audio and illuminate the MKR/MUTE
annunciator.
Muting Marker Beacon Audio
During marker beacon audio reception, press the MKR/MUTE Key
to mute the audio. The MKR/MUTE annunciator remains lit, but the
current marker tone is silenced. Audio muting deactivates automatically
and marker beacon audio is heard when the next marker beacon signal
is received.
Deselecting Marker Beacon Audio
To deselect marker beacon audio, press the MKR/MUTE Key twice
during marker beacon reception or once if a marker beacon signal is
not detected.
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Garmin GMA 345 Pilot’s Guide
190-01878-01 Rev. C
GMA 345 Audio Panel
INTERCOM SYSTEM (ICS)
The GMA 345 includes a three-position intercom system (ICS), two
MUSIC inputs, and one telephone/entertainment input for the pilot, copilot
and passengers. The intercom provides Pilot and Crew audio isolation.
Intercom Controls
NOTE: The PILOT and CREW ICS ISOLATION states are exclusive. Both
cannot be active at the same time. When neither Pilot or Crew are
active, the unit is in All ICS mode. In this mode, the pilot, copilot, and
passengers communicate with each other.
Pilot Isolate Mode
Pressing the PILOT ‘ICS ISOLATION’ Key isolates the pilot from all
other ICS positions (copilot and passengers). The copilot and passengers
share communication between themselves but cannot communicate
with the pilot. A solid annunciation of the in-key annunciator indicates
PILOT ICS ISOLATION is active.
Crew Isolate Mode
Pressing the CREW ‘ICS ISOLATION’ Key places the pilot and copilot
on a common ICS communication channel. The passengers are on their
own intercom channel and can communicate with each other, but
cannot communicate with the pilot and copilot. A solid annunciation
of the inkey annunciator indicates CREW ICS ISOLATION is active.
190-01878-01 Rev. C
Garmin GMA 345 Pilot’s Guide
17
GMA 345 Audio Panel
INTERCOM VOLUME
The knobs on either side of the GMA 345 control intercom and music
volume independently. The left inner and outer knobs are dedicated to the
audio levels for the pilot headset; the right inner and outer knobs control
audio levels for not only the copilot but also any passenger headsets. The
inner, smaller knobs on both sides are used to control intercom volume
for the receiving headsets. The outer, larger knobs are used to control
music volume.
The left inner knob can be used to turn off the GMA 345 audio panel,
by turning fully counter-clockwise until the knob clicks. All backlight and
annunciator LEDs will turn off.
The position marks on all four knobs are not night-time visible.
RADIO MUTE MUSIC
Press and hold the MUSIC Key to enable or disable muting of music
channel 1, music channel 2 and Bluetooth music audio when radio (i.e.,
COM, NAV, or AUX) audio is active.
ICS MUTE MUSIC
Press and hold the AUX2 Key to enable or disable muting of music
audio when intercom audio is active.
PASSENGER MUTING
Press and hold AUX1 to enable/disable passenger muting during COM
audio reception. The aural message “Passenger Mute Enabled/Disabled”
is heard.
SPEAKER
NOTE: Speaker audio turns off in circumstances where aircraft power
falls below 11 volts.
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Garmin GMA 345 Pilot’s Guide
190-01878-01 Rev. C
GMA 345 Audio Panel
All of the radios can be heard over the cabin speaker. Pressing the SPKR
Key selects and deselects the cabin speaker. Speaker audio is muted when
the PTT is pressed. Certain aural alerts and warnings (autopilot, traffic,
altitude) are always heard on the speaker, even when the speaker is not
selected.
Speaker Key
Passenger Address Mode (PA Mode)
Press and hold the SPKR Key for one second to initiate Passenger
Address Mode. PA Mode is annunciated by a rapid blinking of the
SPKR annunciator. When in PA Mode the crew can use the PTT “Pushto-Talk” button to deliver announcements over the speaker and to the
passenger headsets.
Split-PA Mode
During Split-PA Mode the pilot can continue to use COM1 for
transmission while the copilot delivers PA announcements. To initiate
Split-PA Mode, first enter Split-COM Mode by pressing both MIC Keys
simultaneously, then press and hold the SPKR Key for one second.
3D AUDIO
3D Audio is useful when multiple audio sources are present. By using
different responses in each ear, 3D audio processing creates the illusion that
each audio source is coming from a unique location or seat position.
Because this feature uses different signals for left and right channels, it
requires wiring for stereo intercom and stereo headsets. If 3D audio is
activated when mono headsets are in use, the listener will still hear all audio
sources; however, there is no benefit from location separation.
190-01878-01 Rev. C
Garmin GMA 345 Pilot’s Guide
19
GMA 345 Audio Panel
With a single COM selected and 3D Audio enabled, the listener hears
the audio source at the 12 o’clock position. If both COMs are selected,
the listener hears COM1 at 11 o’clock and COM2 at the 1 o’clock position.
All other intercom positions are processed to sound like their relative
seat location. By default, the GMA 345 assumes the pilot sits in the left
seat. A Garmin authorized service center can make changes to the default
configuration.
ENABLING 3D AUDIO
Press and hold the PILOT Key to toggle 3D audio processing on and off
for all headset positions. When 3D Audio is enabled, the aural message
“3D audio left” is heard in the left ear followed by “3D audio right” in the
right ear. If the aural messages are not heard in only the left and then the
right ear respectively, the cause may be aircraft wiring or headset settings.
Refer to the following table if a headset or aircraft wiring problem is
suspected.
3D Audio Troubleshooting
Symptom(s)
Cause(s)
Solution(s)
1) Use a stereo headset
“3D audio left”
1) Mono headset in
message heard in
use
both ears.
2) Set mono/stereo switch on headset
2) Stereo headset in
“3D audio right”
use with mono/
to ‘stereo’
message not
stereo switch set to
heard
‘mono’
3) If after checking solutions #1 and
3) Aircraft wiring has
left audio wired to
#2 see a service center as soon as
both left and right
possible to inspect/correct wiring.
channels of stereo
This wiring fault can cause fail-safe
headset jack
audio not to function.
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Garmin GMA 345 Pilot’s Guide
190-01878-01 Rev. C
GMA 345 Audio Panel
“3D audio left”
1)
message heard
in both ears,
2)
followed by “3D
audio right”
message heard in
both ears
3)
“3D audio right” 1)
message heard in
both ears. “3D
audio left” not
heard
1)
“3D audio left”
message heard
in right ear only
followed by “3D
audio right”
message heard in
left ear only
2)
1)
“3D audio left”
message heard in
left ear only, no
audio heard in
right ear.
190-01878-01 Rev. C
3D Audio Troubleshooting
1) Use a stereo headset
Mono headset in
use
2) Set mono/stereo switch on headset
Stereo headset in
use with mono/
to ‘stereo’
stereo switch set to
mono
3) If after checking solutions #1 and
Incorrect aircraft
wiring (left/right
#2 see a service center as soon as
shorted together)
possible to inspect/correct wiring.
This wiring fault can cause fail-safe
audio not to function.
1) See a service center as soon as
Incorrect aircraft
wiring (right channel
possible to inspect/correct wiring.
used for mono
This wiring fault can cause fail-safe
instead of left or
audio not to function.
left/right swapped)
Stereo headset is on 1) Verify correct orientation from the
backwards
left/right indication on each side of
the headset or the position of the
boom MIC (usually attached on left
side). If the headset is backwards,
the left/right position information
will be swapped.
2) See a service center as soon as
Incorrect aircraft
wiring (left/right
possible to inspect/correct wiring.
channels swapped)
This wiring fault can cause fail-safe
audio not to function.
1) See a service center to wire the
Aircraft wired for
mono intercom
installation for stereo headsets.
Garmin GMA 345 Pilot’s Guide
21
GMA 345 Audio Panel
3D Audio Troubleshooting
1) See a service center as soon as
“3D audio right” 1) Incorrect aircraft
message heard
wiring (right channel
possible to inspect/correct wiring.
in right ear only,
used for mono
This wiring fault can cause fail-safe
no audio heard in
instead of left, or
audio not to function.
left ear
left/right swapped)
3D Audio Troubleshooting
CLEARANCE RECORDER AND PLAYER
The GMA 345 contains a digital clearance recorder that records up to 60
seconds of the selected COM radio signal. Recorded COM audio is stored
in separate memory blocks. Once 60 seconds of recording time have been
reached, the recorder begins recording over the stored memory blocks,
starting from the oldest block.
Pressing the PLAY Key once plays the latest recorded memory block.
Pressing the MKR/MUTE Key during play of a memory block stops play.
If a COM signal is detected during play of a recorded memory block, play
is halted.
Pressing the PLAY Key while audio is playing begins playing the previously
recorded memory block. Each subsequent press of the PLAY Key selects the
previously recorded memory block.
Powering off the unit automatically clears all recorded blocks.
PLAY Key
Stops Play
Left Knob - Pilot Volume
22
Marker Mute Key
Garmin GMA 345 Pilot’s Guide
190-01878-01 Rev. C
GMA 345 Audio Panel
ENTERTAINMENT INPUTS
The GMA 345 provides four telephone/entertainment inputs:
• Press the MUSIC Key to turn music on/off for all positions. The SEL
Key selects the music source (Music 1, Music 2, or Bluetooth Music) for
all positions. The pilot can choose not to hear music by either turning
down the Pilot music volume or enabling PILOT ‘ICS ISOLATION’. The
copilot and passengers can choose not to hear music by turning down the
Copilot/Passenger music volume. Refer to the following table on MUSIC
and SEL Key Functions for more information.
• Press the TEL Key to enable Bluetooth telephone or rear connector wired
telephone connection to ICS. When a Bluetooth telephone connection is
active the rear telephone connection is disabled. Distribution is controlled
by ICS isolation state. When the TEL Key is selected, the pilot is always
connected to the telephone interface. Other ICS positions are connected
to the telephone interface if they hear the Pilot in that ICS state.
Function
Action
Key Annunciations
Notes
Press the
Turn MUSIC MUSIC Key
ON
(when not
selected).
MUSIC in-key annunciator
turns green.
Press the
Turn MUSIC MUSIC
OFF
Key (when
selected).
MUSIC in-key annunciator
turns OFF (source selection
annunciators are unaffected).
Change
MUSIC
Source
Music source selection is
cyclic, moving from 1 to 2 to
3 and then back to 1.
Press the
SEL Key.
MUSIC andSEL Key Functions
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Garmin GMA 345 Pilot’s Guide
23
GMA 345 Audio Panel
Function
Action
Toggle TEL Audio
ON/OFF
Press the TEL
Key.
TEL in-key annunciator
toggles between green
and OFF.
Receive Bluetooth
Phone Call
Incoming
call. *
TEL flashes blue
indicating an incoming
Bluetooth phone call.
Answer Bluetooth
Phone Call
Press TEL
during
incoming call
(TEL flashing).
TEL displays solid blue.
Lost
Bluetooth Phone
Call Disconnected By connection or
Source
user action.
TEL returns to previous
state (green or OFF).
Disconnect
Bluetooth Phone
Call Using GMA 345
Bluetooth Phone
Call Initiated by
Source/Phone
Key Annunciations
or
Press TEL.
or
Press TEL, if
TEL is not yet
selected.
TEL returns to previous
state (green or OFF).
TEL displays solid blue.
* If TEL is selected (green), pre-recorded ringer audio is played.
** If TEL is selected (green), no action is required. TEL automatically turns blue and connects.
TEL Key Functions
24
Garmin GMA 345 Pilot’s Guide
190-01878-01 Rev. C
GMA 345 Audio Panel
MUSIC EFFECTS
The following music effects are available:
• Music Equalizer: Press the SEL Key and the PILOT Key simultaneously
to change the selected Music Equalizer setting. Available settings
include: Disabled, Classical, Pop, or Rock.
• Music Bass Boost: Press the SEL Key and the CREW Key
simultaneously to change the selected Music Bass Boost setting.
Available settings include: Disabled, Medium, or High.
ENTERTAINMENT MUTING
Entertainment muting can be enabled or disabled by the user, however
it is always muted during alerts.
Enabling/Disabling Muting
Press and hold the MUSIC Key for 1 second to toggle radio muting
of music on and off. The aural message “Radio Mute Music Enabled/
Disabled” is heard.
Press and hold the AUX2 button for one second to toggle intercom
muting of music on and off. The aural message “Intercom Mute Music
Enabled/Disabled” is heard.
BLUETOOTH®
The GMA 345 supports the following Bluetooth profiles and functions:
• A2DP Bluetooth profile for entertainment audio input.
• HFP Bluetooth profile for connection to a telephone (alternate interface
for wired TEL function).
• Ability to deliver Bluetooth audio to a VIRB X or VIRB XE Action
Camera via HFP 1.6 “Wide Band Speech” format.
• Ability to deliver Bluetooth audio to third-party cameras that are
capable of receiving audio via the Hands-Free Profile. HFP 1.6 “Wide
Band Speech” format is supported by the GMA 345.
• AVCRP Bluetooth profile for entertainment audio media controls (Play/
Pause, Skip Forward, and Skip Previous).
190-01878-01 Rev. C
Garmin GMA 345 Pilot’s Guide
25
GMA 345 Audio Panel
During power up the GMA automatically reconnects to the last
connected device. This is annunciated by the Bluetooth annunciator
illuminating.
If the same Bluetooth device is used to play music and make a phone
call, the phone has priority and the music audio is suspended. Music
audio resumes when the phone call disconnects and the music connection
is re-established by the source device.
Pairing a Bluetooth Device
NOTE: The Bluetooth annunciation is illuminated only when a Bluetooth
device is connected.
Pairing mode allows a new device to discover and create a connection
to the GMA 345. Additionally, pairing mode is used to forcefully
disconnect a device currently connected to the GMA 345.
Press and hold the TEL (PAIR) Key for one second to enter pairing
mode. The Bluetooth annunciator flashes to indicate the GMA 345 is in
pairing mode and “Pairing Enabled” audio is played. Once the Bluetooth
annunciator flashes, the GMA is discoverable for two minutes, or until a
device is paired or connected. While discoverable, a Bluetooth enabled
device (e.g., cellphone or tablet) can find and pair with the GMA. Refer
to the device’s instruction manual for information on how to pair and
connect to a new Bluetooth device. Once paired and connected, the
Bluetooth annunciator on the GMA stops flashing and remains lit as
long as the Bluetooth connection is active. The GMA remembers the
last 10 paired devices. When the paired devices list is full and a new
device is paired, the least recently connected device is removed from
the paired device list.
26
Garmin GMA 345 Pilot’s Guide
190-01878-01 Rev. C
GMA 345 Audio Panel
Pairing to a Garmin VIRB X or VIRB XE Action Camera
NOTE: The GMA 345 is capable of connecting to one Bluetooth device
at a time.
The GMA 345 supports Bluetooth wireless delivery of pilot
headphone audio to versions of the Garmin VIRB action camera that
support Bluetooth mic audio input for recording.
Pairing a Garmin VIRB to the GMA 345 works like pairing other
Bluetooth audio devices. Once connected, pilot headphone audio
will be delivered to the VIRB via Bluetooth. In a connection to
the Garmin VIRB, the GMA is the source. Therefore, selecting an
entertainment key is not required.
Pairing To A Third-Party Camera
NOTE: The third party camera must support receiving audio via the
Bluetooth Hands-Free Profile.
NOTE: The third party camera must initiate the initial pairing process
with the GMA 345.
Press and hold the TEL (PAIR) Key for one second to put the GMA
345 into pairing mode. Reference the third party camera’s manual
for its pairing instructions. Once the pairing process is complete
the GMA 345 and the third party camera will connect to each other
via the Hands Free Profile. During this initial connection, Bluetooth
Recording Mode will need to be enabled on the GMA 345 for the third
party camera. To enable Bluetooth Recording Mode momentarily
press the TEL (PAIR) and PILOT keys simultaneously. When this
feature is enabled, the “Bluetooth Recording Mode Enabled” message
is played on the intercom. Enabling Bluetooth Recording Mode only
needs to be done once. When the GMA 345 and the third party
camera connect again in the future Bluetooth Recording Modes will
automatically be enabled.
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Garmin GMA 345 Pilot’s Guide
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GMA 345 Audio Panel
Disabling Bluetooth
To aid in troubleshooting, the GMA 345 Bluetooth can be disabled. To
disable, press and hold the TEL (PAIR) Key for five seconds. “Bluetooth
Disabled” audio is played. To re-enable without powercycling, press
and hold the TEL (PAIR) Key for five seconds. “Bluetooth Enabled”
audio is played.
Note that Bluetooth will always be enabled when the GMA 345 is
powercycled.
Bluetooth Media Controls
With a Bluetooth device connected, music enabled, and the Bluetooth
Music Source selected:
•
Press the NAV2 and MUSIC Keys simultaneously to PLAY/PAUSE
Bluetooth media.
•
Press the NAV2 and AUX1 Keys simultaneously to skip to the
previous Bluetooth media track.
•
Press the NAV2 and AUX2 Keys simultaneously to skip to the
next Bluetooth media track.
Bluetooth Telephone Volume Controls
When a Bluetooth telephone call is active and TEL is enabled:
28
•
Press and hold the PILOT Key to increase the Bluetooth telephone
call volume.
•
Press and hold the CREW Key to decrease the Bluetooth telephone
call volume.
Garmin GMA 345 Pilot’s Guide
190-01878-01 Rev. C
GMA 345 Audio Panel
USB POWER JACK
The USB power jack is a dedicated charge port and uses a USB Type A
jack. The USB power jack will charge any device while the GMA is powered
on. In circumstances where the aircraft power falls below 11 volts, the USB
power jack will turn off. When the GMA is turned off, the USB power port
is also off. The USB power jack supports a maximum of 2.1 Amps charge
current to devices.
USB Jack Dust Cover
Note that the GMA USB dust cover can be clipped to any USB cable
plugged into the GMA. The dust cover has a clip feature that can attach to a
USB cable for temporary storage to prevent losing the cover.
FAIL-SAFE OPERATION
If there is a failure of the GMA 345 or when power is not applied, a
fail-safe circuit connects the pilot’s headset and microphone directly to the
COM1 transceiver. Audio is not available on the speaker during Fail-safe
operation.
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Garmin GMA 345 Pilot’s Guide
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GMA 345 Audio Panel
Press and hold for 1 second
Bluetooth
Media
Play/
Pause
Bluetooth
Media
Skip
Previous
Press and hold for 1 second
Bluetooth
Media
Skip Next
and
Press keys simultaneously
Intercom
Mute
Music
Press and hold for 1 second
BT Call
Volume
Increase
Press and hold
3D Audio
BT Call
Volume
Decrease
Press and hold
Monitor
Mute
Radio
Mute
Music
Passenger
Mute
or
Press and hold for 1 second
Press and hold for 1 second
Passenger
Address
Press and hold for 1 second
Split COM
and
Press keys simultaneously
Marker
Beacon
High Sens Press and hold for 1 second
Bluetooth
Pairing
Mode
Bluetooth
Recording
Mode
and
Press keys simultaneously
and
Press keys simultaneously
Press and hold for 1 second
and
Press keys simultaneously
Music
Equalizer
and
Press keys simultaneously
Music
Bass
Boost
and
Press keys simultaneously
Alternate Key Function Quick Reference
30
Garmin GMA 345 Pilot’s Guide
190-01878-01 Rev. C
Garmin International, Inc.
1200 East 151st Street
Olathe, Kansas, 66062, U.S.A.
Garmin AT Inc.
2345 Turner Road SE
Salem, OR 97302, U.S.A.
Garmin (Europe) Ltd.
Liberty House, Hounsdown Business Park
Southampton, Hampshire SO40 9LR U.K.
Garmin Corporation
No. 68, Zhangshu 2nd Road
Xizhi District, New Taipei City, Taiwan
Contact Garmin Product Support at www.flygarmin.com.
For warranty information refer to
https://fly.garmin.com/fly-garmin/support/warranty-information/
© 2016-2018 Garmin Ltd. or its subsidiaries
190-01878-01 Rev. C
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