Garmin GMA 345, Руководство пилота

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190-01878-01 Rev. A
Garmin GMA 345 Pilot’s Guide 12
GMA 345 Audio Panel
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. Split-
COM 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.
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.