Pilot's Guide

190-01255-01 Rev. A
Garmin G1000H
™
Pilot’s Guide for the Bell 407GX
137
AUDIO PANEL AND CNS
CLEARANCE RECORDER AND PLAYER (OPTIONAL)
TheAudioPanel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.
Pressing the MKR/MUTE Keyduringplayofamemoryblockstopsplay.IfaCOMinputsignalisdetected
during play of a recorded memory block, play is halted.
Pressing the optional Play button while audio is playing begins playing the previously recorded memory
block.EachsubsequentpressofthePlaybuttonselectsthepreviouslyrecordedmemoryblock.
Powering off the unit automatically clears all recorded blocks.
Figure 4-48 Marker Mute Key
MKR/MUTE
Key Stops Play
SPLIT COM
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canstillmonitorNAV1,NAV2,AUX, andMKRAudioasselected,butthecopilotisonlyable to
monitorthehighernumberedCOM(COM2orCOM3).
Selection of more than one MICKeyselectsSplitCOMoperation(usingCOM1/COM2,COM1/COM3,or
COM2/COM3).  The COM1/MIC1, COM2/MIC2, or COM3/MIC3 annunciators are illuminated indicating
Split COM operation. The selected COM frequencies are displayed in green indicating that both transceivers
are active. Split COM operation is cancelled by pressing one of the selected MIC Keys again.
When in Split-COM mode, the pilot is using the lower numberedCOM,thecopilotisusingthehigher
numberedCOM.TheMIC1orMIC2(dependsonCOMsselectedforSplit-COM)Annunciatorasheswhen
the pilot’s microphone PTT is pressed.  The MIC2 or MIC3 (depends on COMs selected for Split-COM)
Annunciator flashes when the copilot’s microphone PTT is pressed.