User manual GARMIN GMA 347 AUDIO PANEL PILOT'S GUIDE

[. . . ] GMA 347 audio panel pilot's guide WARRANTY 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. This warranty does not cover failures due to abuse, misuse, accident, or unauthorized alterations or repairs. [. . . ] When the COM muting on receive option is enabled, only the primary COM radio audio is recorded by the digital clearance recorder. COM Muting on Transmit The COM Muting on Transmit option mutes all secondary COM audio while the primary COM radio is transmitting. UNMUTED/UNSWITCHED INPUTS The unit provides four (4) unmuted/unswitched inputs that are always present on the headsets or speakers. These inputs are as follows: · ALTITUDE WARNING · UNSWITCHED 1 · UNSWITCHED 2 · UNSWITCHED 3 6 Garmin GMA 347 Pilot's Guide 190-00325-00 Rev. A Description Telephone The GMA 347 provides a 2-way telephone interface. Operation depends on the state of the TEL key and ICS mode. See the ICS Isolation Modes & Telephone Distribution table in the operation section of this manual. Telephone communication is much like using the intercom, allowing both parties to talk at once. The TEL channel may be disabled in Configuration mode. Contact a Garmin-authorized service center for details. Only the pilot and copilot hear MUSIC 1. MUSIC 2 is a non-muted input heard only by the passengers. MUSIC 1 and MUSIC 2 characteristics are affected by the active intercom mode. Refer to the ICS Isolation Modes and Telephone Distribution table. MUSIC 1 is always soft-muted when an interruption occurs from an aircraft radio. Soft muting is the gradual return of MUSIC 1 to its original volume level. When the MKR/MUTE key is pressed and held for two seconds, the pilot hears two beeps to indicate that MUSIC 1 muting by COM has been disabled. Pressing and holding the MKR/MUTE key again for two seconds sends one beep to the pilot to indicate COM muting is restored. MUSIC 1 can also be configured to mute during ICS activity. Contact a Garmin-authorized service center to configure MUSIC 1 muting by the ICS. Auxiliary Entertainment Inputs The GMA 347 provides two stereo entertainment inputs; MUSIC 1 and MUSIC 2. Two 3. 5 mm stereo phone jacks should be installed in a convenient location for this purpose. These inputs are compatible with popular portable entertainment devices such as MP3 and CD players. The headphone outputs of these devices are plugged into the MUSIC 1 or MUSIC 2 jacks. 190-00325-00 Rev. A Garmin GMA 347 Pilot's Guide 7 Operation SYSTEM OPERATION Multifunction Controls The Pilot side volume knob controls the ON and OFF function, the pilot's intercom volume plus manual and automatic squelch. [. . . ] · Enable or Disable Internal Sidetone. Software configuration enables/disables Internal sidetone. · Enable or Disable COM muting on transmit and COM muting on receive. When configured this way, audio on unselected COMs is muted while the selected COM is transmitting or receiving audio. [. . . ]