GMA 350H Pilot’s Guide
Copyright © 2011-2013 Garmin Ltd. or its subsidiaries. All rights reserved. This manual reflects the operation of GMA 350H Audio Panel. Some differences in operation may be observed when comparing the information in this manual to some installations as configuration changes can be made by the installer. Garmin International, Inc., 1200 East 151st Street, Olathe, Kansas 66062, U.S.A. Tel: 913/397.8200 Fax: 913/397.8282 Garmin AT, Inc., 2345 Turner Road SE, Salem, OR 97302, U.S.A. Tel: 503/391.
LIMITED WARRANTY This Garmin product is warranted to be free from defects in materials or workmanship for two years from the date of purchase. Within this period, Garmin will, at its sole option, repair or replace any components that fail in normal use. Such repairs or replacement will be made at no charge to the customer for parts and labor, provided that the customer shall be responsible for any transportation cost.
Table of Contents Controls................................................................................................................. 1 Features and Operation....................................................................................... 5 Power-UP.............................................................................................................. 5 Mono/Stereo Headsets........................................................................................ 5 Transceivers..............
Table of Contents Blank Page ii Garmin GMA 350H Pilot’s Guide 190-01134-14 Rev.
GMA 350H Audio Panel CONTROLS 1 11 2 3 4 5 6 7 8 9 12 13 14 15 16 17 18 19 10 20 21 GMA 350H Controls 22 23 GMA 350H (Traffic) Controls NOTE: When a key is selected, a triangular annunciator above the key is illuminated. 1 MKR/MUTE – Selects marker beacon receiver audio. Mutes the currently received marker beacon receiver audio. Deactivates automatically and marker beacon audio is heard when the next marker beacon signal is received. Also, stops play of recorded COM audio.
GMA 350H Audio Panel 2 COM1 – When selected, audio from the #1 COM receiver can be heard. Press and hold to enable/disable monitored COM muting during primary COM reception. 3 COM2 – When selected, audio from the #2 COM receiver can be heard. Press and hold to enable/disable monitored COM muting during primary COM reception. 4 COM3 – When selected, audio from the #3 COM receiver can be heard. Press and hold to enable/disable monitored COM muting during primary COM reception.
GMA 350H Audio Panel 12 MIC1 – Selects the #1 transmitter for transmitting. COM1 receive is simultaneously selected when this key is pressed allowing received audio from the #1 COM receiver to be heard. COM2 or COM3 receive can be added by pressing the COM2 or COM3 Key. Selection of a second MIC button initiates Split-COM mode (using COM1/COM2 or COM1/COM3). When in Split-COM mode, the pilot is using the lower numbered COM, the copilot is using the higher numbered COM.
GMA 350H Audio Panel 4 19 SPKR – Selects and deselects the cabin speaker. COM, NAV, AUX, and MKR receiver audio can be heard on the speaker. Press and hold for 2 seconds for Passenger Address (PA). The SPKR key flashes during PA. 20 Cursor (CRSR) Control Knob – Turn to move the cursor (flashing green or blue annunciator) to the desired source.
GMA 350H Audio Panel FEATURES AND OPERATION The GMA 350H 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, and a COM clearance recorder. 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.
GMA 350H Audio Panel TRANSCEIVERS NOTE: Transceiver functions may also be accessed via Voice Recognition commands. Refer to the Voice Recognition section for more information. Audio from the #1, #2, or #3 COM receiver can be selected independently by pressing the respective Key(s) (COM1, COM2, or COM3). Pressing MIC1, MIC2, or MIC3 selects the #1, #2, or #3 transmitter and simultaneously selects the related COM receiver (COM1, COM2, or COM3) allowing received audio to be heard.
GMA 350H Audio Panel When in Split-COM mode, the pilot is using the lower numbered COM, the copilot is using the higher numbered COM. COM2 Radio is Selected Selecting a COM Radio for Transmit TRANSMIT INDICATIONS During COM transmission, the active transceiver (MIC1, MIC2, or MIC3) Key Annunciator flashes approximately once per second. During Split-COM transmission, the MIC1 or MIC2 annunciator flashes when the pilot’s microphone PTT is pressed.
GMA 350H Audio Panel RECEIVERS NOTE: Receiver functions may also be accessed via Voice Recognition commands. Refer to the Voice Recognition section for more information. 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.
GMA 350H Audio Panel Audio Frequency Audio Keying Lamp Actuated (optional) 3000 Hz (Inner) White The GMA 350H 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.
GMA 350H Audio Panel INTERCOM SYSTEM (ICS) NOTE: Intercom functions may also be accessed via Voice Recognition commands. Refer to the Voice Recognition section for more information. The GMA 350H includes a six-position intercom system (ICS), one MUSIC input, and one telephone/entertainment input for the pilot, copilot and passengers. The intercom provides Pilot, Copilot, and Passenger audio isolation. Intercom Controls Press the PILOT, COPLT, and/or PASS Keys to distribute as required.
GMA 350H Audio Panel INTERCOM MODES NOTE: In the following modes the copilot position is configured as crew. NOTE: In the default ICS configuration, only the pilot and copilot positions can hear aircraft alerts. All Intercom Mode In ‘All Intercom’ mode the Pilot, Copilot, and Passengers hear each other and hear the aircraft audio. Aircraft Audio PILOT COPLT PASS ICS Keys 190-01134-14 Rev.
GMA 350H Audio Panel Pilot Isolate Mode In ‘Pilot Isolate’ mode the Pilot, Copilot, and Passengers hear the aircraft audio. The Copilot and Passengers also hear each other. Aircraft Audio PILOT COPLT PASS ICS Keys Mode Operation Passenger/Crew Isolate Mode In ‘Passenger/Crew Isolate’ mode the Pilot and Copilot hear the aircraft audio and each other. The Passengers hear each other. Aircraft Audio PILOT ICS Keys 12 COPLT PASS Mode Operation Garmin GMA 350H Pilot’s Guide 190-01134-14 Rev.
GMA 350H Audio Panel Copilot Isolate Mode In ‘Copilot Isolate’ mode the Pilot and Passengers hear the aircraft audio and each other. The Copilot has the option to use Split-COM mode. Split-COM Mode (Optional) Aircraft Audio COPLT PILOT PASS ICS Keys Mode Operation All Isolate Mode In ‘All Isolate’ mode the Pilot hears the aircraft audio. The Copilot has the option to use Split-COM mode. The Passengers hear each other. Split-COM Aircraft Audio (Optional) PILOT ICS Keys 190-01134-14 Rev.
GMA 350H Audio Panel Pilot & Copilot Isolate Mode In ‘Pilot & Copilot Isolate’ mode the Pilot and Passengers hear the aircraft audio. The Copilot has the option to use Split-COM mode. Split-COM (Optional) Aircraft Audio PILOT ICS Keys COPLT PASS Mode Operation Pilot & Passenger Isolate Mode In ‘Pilot & Passenger Isolate’ mode the Pilot and Copilot hear the aircraft audio. The Passengers hear each other.
GMA 350H Audio Panel Copilot & Passenger Isolate Mode In ‘Copilot & Passenger Isolate’ mode the Pilot can hear the aircraft audio. The Copilot has the option to use Split-COM mode. The Passengers hear each other. Split-COM Aircraft Audio (Optional) COPLT PILOT ICS Keys PASS Mode Operation INTERCOM VOLUME AND SQUELCH The VOL/CRSR Knob controls selection and volume or manual squelch adjustment for audio sources that may not be adjustable anywhere else in the system.
GMA 350H Audio Panel Blue-Select Mode (Telephone/Entertainment Distribution) The Blue-Select Mode is entered by pressing the small knob when the volume control cursor (flashing green annunciator) is not active. If the volume control cursor is active, press the small knob twice. The first press will cancel the volume control cursor, the second will activate Blue-Select Mode. The annunciator over the Key will be flashing blue.
GMA 350H Audio Panel Adjusting Speaker Volume When the cursor is on SPKR, the Volume Control Knob adjusts the speaker volume of the selected sources (COM, NAV, AUX, MKR). Adjusting MKR, AUX, , and MUSIC Volume When the cursor is on MKR, AUX, , or MUSIC, the Volume Control Knob adjusts the individual volume of the selected source.
GMA 350H Audio Panel Passenger Address Mode (PA Mode) Press and hold the SPKR Key for 2 seconds 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, to the passenger headsets, or both depending on configuration. Split-PA Mode During Split-PA Mode the pilot can continue to use the radio(s) while the copilot delivers PA announcements.
GMA 350H Audio Panel 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. 3D Audio Troubleshooting 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.
GMA 350H Audio Panel 3D Audio Troubleshooting “3D audio 1) Incorrect aircraft 1) See a service center as soon as right” message wiring (right channel possible to inspect/correct wiring. heard in both used for mono This wiring fault can cause fail-safe ears. “3D instead of left or left/ audio not to function.
GMA 350H Audio Panel CLEARANCE RECORDER AND PLAYER The GMA 350H contains a digital clearance recorder that records up to 2.5 minutes of the selected COM radio signal. Recorded COM audio is stored in separate memory blocks. Once 2.5 minutes of recording time have been reached, the recorder begins recording over the stored memory blocks, starting from the oldest block. An optional external Play button controls the play function. Pressing the Play button once plays the latest recorded memory block.
GMA 350H Audio Panel Alternatively, some commands will be indicated by a voice response from the GMA 350H. If the desired modes are not indicated by annunciator lights or a voice response, the pilot should repeat the command by using the Push-to-Command button, or by manually using the front panel controls of the GMA 350H. If a command is incorrectly interpreted by the GMA 350H, a negative acknowledgement tone will be played.
GMA 350H Audio Panel Control COM Example Phrase “COM one” “MIC one” “COM one MIC” “COM two” “MIC two” “COM two MIC” “COM three” “MIC three” “COM three MIC” “Split COM” “Split COM one, two” or“Split one, two” “Split COM one, three” or “Split one, three” “Split COM two, three” or “Split two, three” “Monitored COM mute” OR “Mute Monitored COM” AUX NAV 190-01134-14 Rev.
GMA 350H Audio Panel Control TRFC Example Phrase “Traffic” “Telephone” “Phone” OR “Jack” “Telephone mute” “Mute telephone” “Phone mute” “Mute phone” “Jack mute” OR “Mute Jack” “Disable telephone mute” “Mute telephone disable” “Disable phone mute” “Mute phone disable” “Disable jack mute” “Mute jack disable” “Telephone mute disable” “Disable mute telephone” “Phone mute disable” “Disable mute phone” “Jack mute disable” OR “Disable mute jack” “MUSIC” “MUSIC mute” OR “Mute MUSIC” MUSIC 24 “Disable MUSIC mute
GMA 350H Audio Panel Control ICS Isolation Example Phrase “Pilot” “Copilot” “Passenger” OR “Pass” “Passenger mute” “Pass mute” “Mute passenger” OR “Mute pass” “Disable passenger mute” “Disable pass mute” “Disable mute passenger” “Disable mute pass” “Passenger mute disable” “Pass mute disable” “Mute passenger disable” OR “Mute pass disable” “Copilot is passenger” OR “Copilot is pass” Copilot Configuration “Copilot is crew” 190-01134-14 Rev.
GMA 350H Audio Panel Control Example Phrase Action “Manual squelch” OR Toggles manual squelch mode “Man squelch” “Manual squelch threshold up” “Man squelch threshold up” Increases manual squelch “Manual squelch volume up” threshold OR Manual “Man squelch volume up” Squelch “Manual squelch threshold down” “Man squelch threshold down” Decreases manual squelch “Manual squelch voume down” threshold OR “Man squelch volume down” NOTE: Finer manual squelch adjustment may be made using the dual concentric knobs on
GMA 350H Audio Panel Control Example Phrase Action Volume Displays the current volume but “(Desired selection*) volume Adjustments does not change it * Desired selection = “Speaker”, “pilot”, “copilot”, “passenger”, “pass”, “marker”, “aux”, “auxiliary”, “telephone”, “phone”, “jack”, or “music”. NOTE: Finer volume adjustment may be made using the dual concentric knobs on the GMA 350. The voice command “Up” or “Down” is equivalent to three clicks of the inner knob.
GMA 350H Audio Panel ENTERTAINMENT INPUTS The GMA 350H provides two stereo telephone/entertainment inputs: • The telephone/entertainment ( ) Key controls a telephone or entertainment device connected to the rear of the audio panel or to the Front Panel Jack. • The MUSIC Key controls the Entertainment Music audio input. The Front Panel Jack can be used as an entertainment input or a telephone input (in which case, it operates simultaneously with the rear telephone interface). The Front Panel Jack is a 3.
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