Garmin G1000 Manual

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850107
AUDIO PANEL AND CNS
SECTION 4  AUDIO PANEL AND CNS
4.1 OVERVIEW
The Communication/Navigation/Surveillance (CNS) system includes the Audio Panels, communication radios\
, 
navigation radios, and Mode S transponders.  The System Overview Section provides a block diagram description 
of the Audio Panels and CNS system interconnection.
CNS operation in the TBM 850 is performed by the following Line Replacem\
ent Units (LRUs):
•	 Primary
The	PFD	controls	are	used	to	tune	the	communication	transceivers	and	navigation	radios.
The two Audio Panels provide the traditional audio selector functions of microphone and receiver audio 
selection.	 	Each	Audio	 Panel	includes	 an	intercom	 system	(ICS)	between	 the	pilot,	 copilot,	 and	passengers,	 a	
marker beacon receiver, and a COM clearance recorder.  Ambient noise from the aircraft radios is reduced by a 
feature called Master Avionics Squelch (MASQ).  When no audio is detected, MASQ processing further reduces 
the amount of background noise from the radios.
The Mode S Transponders are controlled with softkeys and the FMS	Knob	 located	 on	the	 Primary	 Flight	Display	
(PFD).		 The	Transponder	 Data	Box	is	located	 to	the	 left	of	the	 System	 Time	Box.		The	data	 box	displays	 the	active	
four-digit code, mode,	and	a	reply	status	(Figure	4-1).
AUDIO PANEL VOLUME CONTROL
Adjusting the master volume control affects all radio audio volume and airframe type warnings that are heard 
in	the	 headsets	 (not	the	speaker)	 for	the	 pilot	 or	copilot	 side	Audio	 Panel.		 Radio	adjustments	 made	on	the	 PFD	
controls to compensate for the master volume change on the Audio Panel also a\
ffect the radio levels for the other 
pilot.		 Independent	 radio	volume	 adjustments	 made	using	the	Audio	 Panel	Master	 Volume	 controls	 affect	only	
the audio heard in the corresponding crew position headset.
Radio volume adjustments may be overridden by each crew position independently using the master volume 
control	 on	the	 Audio	 Panel	for	the	 respective	 crew	position.		 In	addition,	 the	master	 volume	 control	for	each	
Audio Panel affects all other system audio output to its designated crew position headset much like volume 
adjustments found on many aviation headsets.  
						

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850108
AUDIO PANEL AND CNS
PFD CONTROLS AND FREQUENCY DISPLAY
Figure 4-1  PFD Controls, COM/NAV Frequency Tuning Boxes, and ADF/DME Tuning Window
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							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850109
AUDIO PANEL AND CNS
1 NAV VOL/ID Knob	–	 Controls	 NAV	audio	 volume	 level.		Press	to	turn	 the	Morse	 code	identifier	 audio	on	
and	off.		Volume	level	is	shown	in	the	NAV	frequency	field	as	a	percentage.
2 NAV Frequency Transfer Key	–	Transfers	the	standby	and	active	NAV	frequencies.
3 NAV Knob	–	 Tunes	 the	standby	 frequencies	 for	the	 NAV	 receiver	 (large knob for MHz; small knob for kHz).  
Press	to	move	the	tuning	box	(light	blue	box)	and	Frequency	Transfer	Arrow	between	NAV1	and	NAV2.
4 NAV Frequency Box	–	 Displays	 NAV	standby	 and	active	 frequency	 fields,	volume,	 and	station	 ID.	 	The	
frequency	of	the	NAV	radio	selected	for	navigation	is	displayed	in	green.
5 COM Frequency Box	–	 Displays	 COM	standby	 and	active	 frequency	 fields	and	volume.		 The	selected	 COM	
transceiver frequency is displayed in green.
6 COM Knob – Tunes the standby frequencies for the COM transceiver (large knob for MHz; small knob for 
kHz).		Press	to	move	 the	tuning	 box	(light	 blue	box)	 and	Frequency	 Transfer	Arrow	between	 COM1	and	
COM2.
7 COM Frequency Transfer Key – Transfers the standby and active COM frequencies.  Press and hold this key 
for	two	 seconds	 to	tune	 the	emergency	 frequency	(121.500	MHz)	automatically	 into	the	active	 frequency	
field.
8 COM VOL/SQ Knob – Controls COM audio volume level.  Press to turn the COM automatic squelch on 
and	off.		Volume	level	is	shown	in	the	COM	frequency	field	as	a	percentage.
9 ADF/DME Tuning Window	–	 Displays	 ADF	frequencies,	 volume	setting,	and	modes,	 and	DME	 tuning	
selection.		Display	by	pressing	the	ADF/DME Softkey.
10 ENT Key	–	Validates	or	confirms	an	ADF	frequency	or	ADF/DME	mode	and	Auto-tune	selection.
11 FMS Knob	–	 Flight	 Management	 System	Knob,	used	to	enter	 ADF	frequencies	 and	select	 ADF/DME	 modes,	
enter	transponder	 codes,	and	Auto-tune	 entries	when	ADF/DME	 Tuning	Window	 or	NRST	 Window	 is	
present.  Press the FMS Knob to turn the selection cursor on and off.  The large knob moves the cursor in 
the window.  The small knob selects individual characters for the highlighted curs\
or location.
12 Transponder Data Box	–	Indicates	 the	selected	transponder	 code,	operating	mode,	reply,	and	 ident	status	
for the applicable transponder.  
						

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850110
AUDIO PANEL AND CNS
AUDIO PANEL CONTROLS
Figure 4-2  Audio Panel Controls
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12
22
24 23 21 19
 NOTE: When a key is selected, a triangular annunciator above the key is illuminated.
1  COM1 MIC	–	 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	receive	 can	be	
added by pressing the COM2 Key.
2 COM1	–	When	selected,	audio	from	the	#1	COM	receiver	can	be	heard.
3 COM2 MIC	–	 Selects	 the	#2	transmitter	 for	transmitting.		 COM2	receive	 is	simultaneously	 selected	when	
this	key	is	pressed	 allowing	 received	audio	from	the	#2	COM	 receiver	 to	be	 heard.		 COM1	receive	 can	be	
added by pressing the COM1 Key.
4 COM2	–	When	selected,	audio	from	the	#2	COM	receiver	can	be	heard.
5 COM3 MIC – Not used in the TBM 850.  
						

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850111
AUDIO PANEL AND CNS
6 COM3 – Not used in the TBM 850.
7 PA – Selects the passenger address system.  The selected COM transmitter is deselected when the PA Key 
is pressed.
8 TEL – Not used in the TBM 850.
9 MUSIC	–	Toggles	the	Music	1	input	on	or	off.		Pressing	and	holding	toggles	music	muting	on	or	off.
10 SPKR	–	 Selects	 and	deselects	 the	on-side	 flight	deck	speaker.		 COM	and	NAV	 receiver	 audio	can	be	heard	
on the speaker.
11 MKR/MUTE – Selects marker beacon receiver audio.  Mutes the currently received marker beacon receiver 
audio.  Unmutes automatically when new marker beacon audio is received.
12 HI SENS – Press to increase marker beacon receiver sensitivity.  Press again to return to low sensitivity.
13 DME	–	Turns	optional	DME	audio	on	or	off.
14 NAV1	–	When	selected,	audio	from	the	#1	NAV	receiver	can	be	heard.
15 ADF	–	Turns	optional	ADF	receiver	audio	on	or	off.
16 NAV2	–	When	selected,	audio	from	the	#2	NAV	receiver	can	be	heard.
17 AUX – Not used in the TBM 850.
18 MAN SQ – Enables manual squelch for the intercom.  When the intercom is active, press the ICS Knob to 
illuminate SQ.  Turn the ICS Knob to adjust squelch.
19 PLAY – Press once to play the last recorded COM audio.  Press again to stop playing.  Press twice within 
0.5 second while audio is playing and the previous block of recorded audio is played.  Each subsequent 
two presses within 0.5 second plays each previously recorded block.
20 INTR COM – Selects and deselects the pilot/copilot intercom on both Audio Panels.
21 CABIN	–	Initiates	intercom	communications	with	passengers	in	the	cabin.
22 ICS Knob – Turn to adjust intercom volume or squelch.  Press to switch between volume and squelch 
control	 as	indicated	 by	illumination	 of	VOL	 or	SQ.		 The	MAN SQ Key must be selected to allow squelch 
adjustment.
23 MSTR Knob	–	 The	 Master	 Volume	 Control	 adjusts	volume	 for	the	 blended	 NAV,	COM,	 intercom	 audio,	
and alert warnings.
24 DISPLAY BACKUP Button – Manually selects Reversionary Mode.  
						

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850112
AUDIO PANEL AND CNS
4.2 COM OPERATION
COM TRANSCEIVER SELECTION AND ACTIVATION
 NOTE:  During PA Mode, the COM MIC Annunciator is extinguished and the COM active frequency color 
changes to white, indicating that neither COM transmitter is active.
 NOTE:  When turning on the G1000 for use, the system remembers the last frequencies used and the active 
COM transceiver state prior to shutdown.
The COM	 Frequency	 Box	is	composed	 of	four	 fields;	 the	two	active frequencies are on the left side and the 
two standby frequencies are on the right.  The COM transceiver is selected for transmitting by pressing the 
COM MIC	Keys	 on	the	 Audio	 Panel.		 During	 reception	 of	audio	 from	the	COM	 radio	selected	 for	transmission,	
audio from the other COM radio is muted.
An active COM frequency displayed in green indicates that the COM transceiver is selected on the Audio 
Panel (COM1 MIC or COM2 MIC Key).  Both active COM frequencies appearing in white indicate that no COM 
radio is selected for transmitting (PA Key is selected on the Audio Panel).
Frequencies	 in	the	standby	 field	are	displayed	 in	either	 white	or	gray.		 The	standby	 frequency	 in	the	 tuning	
box	is	white.		The	other	standby	frequency	is	gray.
Figure 4-3  Selecting a COM Radio for Transmit
Active 
Fields Standby 
Fields
Tuning Box COM2 Radio is 
Selected on the Audio  Panel
Top Section of 
the Audio Panel  
						

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850113
AUDIO PANEL AND CNS
TRANSMIT/RECEIVE INDICATIONS
During	COM	transmission,	 a	white	TX appears by the active COM frequency replacing the Frequency	
Transfer Arrow.  On the Audio Panel, when the active COM is transmitting, the active transceiver COM MIC 
Key	Annunciator	flashes	approximately	once	per	second.
During	 COM	signal	 reception,	 a	white	RX	 appears	 by	the	 active	 COM	frequency	 replacing	the	Frequency	
Transfer Arrow.
Figure 4-4  COM Radio Transmit and Receive Indications Annunciator 
Flashes During  Transmission
Transmit and 
Receive Indicators
When	 the	same	 COM	 radio	is	selected	 on	both	 Audio	 Panels,	 the	pilot	 has	transmit	 priority	on	COM1,	 the	
copilot	has	transmit	priority	on	COM2.
COM TRANSCEIVER MANUAL TUNING
The	COM	frequency	controls	and	frequency	boxes	are	on	the	right	side	of	each	PFD.
Manually tuning a COM frequency:
1) Turn the COM Knob to tune the desired frequency in the COM Tuning Box (large knob for MHz; small knob for 
kHz).
2) Press the Frequency Transfer Key to transfer the frequency to the active field.
3) Adjust the volume level with the COM VOL/SQ Knob.
4) Press the COM VOL/SQ Knob to turn automatic squelch on and off.
Turn the VOL/SQ Knob to adjust 
volume.  Press the Knob to Turn  Automatic Squelch On or Off Press the 
Frequency Transfer 
Key to Transfer COM 
Frequencies Between Active 
and Standby Frequency Boxes
Turn the 
COM Knob to 
Tune the Frequency in 
the Tuning Box
Figure 4-5  COM Frequency Tuning  
						

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850114
AUDIO PANEL AND CNS
SELECTING THE  RADIO TO  BE TUNED
Press the small COM	Knob	 to	transfer	 the	frequency	 tuning	box	and	Frequency	 Transfer	Arrow	between	 the	
upper	and	lower	radio	frequency	fields.
Figure 4-6  Switching COM Tuning Boxes
Press the COM Knob to 
Switch the Tuning Box From 
One COM Radio to the Other
QUICK-TUNING AND ACTIVATING 121.500 MHZ
Pressing and holding the COM Frequency Transfer Key for two seconds automatically loads the emergency 
COM	 frequency	 (121.500	MHz)	in	the	 active	 field	of	the	 COM	 radio	selected	 for	tuning	 (the	one	with	 the	
transfer	arrow).		In	the	example	shown,	pressing	the	Audio	Panel	COM2 MIC Key activates the transceiver.
Figure 4-7  Quickly Tuning 121.500 MHz
Press for Two Seconds to 
Load 121.500 MHz  
						

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850115
AUDIO PANEL AND CNS
AUTO-TUNING THE COM FREQUENCY
COM frequencies can be automatically tuned from the following:
•	 Nearest
AUTO-TUNING FROM THE PFD
COM frequencies for the nearest airports can be automatically tuned from the Nearest Airports Window on 
the	PFD.		 When	 the	desired	 frequency	 is	entered,	 it	becomes	 a	standby frequency.  Pressing the Frequency 
Transfer Key	places	this	frequency	into	the	COM	Active	Frequency	Field.
Auto-tuning a COM frequency for a nearby airport from the PFD:
1) Press the NRST Softkey on the PFD to open the Nearest Airports Window.  A list of 25 nearest airport identifiers 
and COM frequencies is displayed.
2) Turn the FMS Knob to scroll through the list and highlight the desired COM frequency\
.
3) Press the ENT Key to load the COM frequency into the COM Standby Tuning Box.
4) Press the Frequency Transfer Key to transfer the frequency to the COM Active Frequency Field.
Figure 4-8  Nearest Airports Window (PFD) Select the 
NRST 
Softkey to Open 
the Nearest 
Airports Window  
						

							190-00709-04  Rev. AGarmin G1000 Pilot’s Guide for the Socata TBM 850116
AUDIO PANEL AND CNS
AUTO-TUNING FROM THE MFD
Frequencies	can	be	automatically	 loaded	into	the	COM	 Frequency	 Box	from	 pages	 in	the	 NRST	 or	WPT	
page group by highlighting the frequency and pressing the ENT	Key	(Figures	4-9,	4-10,	and	4-11).
Auto-tuning a COM frequency from the WPT and NRST Pages:
1) From any page that the COM frequency can be auto-tuned, activate the cursor by pressing the FMS Knob on 
the MFD control unit or selecting the appropriate softkey.
2) Turn the FMS Knob to place the cursor on the desired COM frequency (Figure 4-11).
3) Press the ENT Key to load the COM frequency into the standby field of the selected CO\
M radio.
4) Press the Frequency Transfer Key on either PFD to transfer the frequency to the COM Active Frequency 
Field.
Figure 4-9  Frequency Auto-Tuning from the MFD
Press the ENT Key to Load a 
Highlighted Frequency into the  COM Standby Frequency Box.
Turn the 
FMS 
Knob to Scroll 
Through a List 
of Frequencies.