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the pilot headset and microphone to the
COM1 transceiver, and the copilot headset
and microphone to the COM2 transceiver. (No
audio is available to the speaker in this situation.)
If only one GIA fails, the crewmember
on that side will only have audio access to the
corresponding COM transceiver.
COM Radio Priority
The G1000 includes two COM radios. COM1
is in GIA#1 and COM2 is in GIA#2. Either
pilot may communicate using either COM
radio. Each crew microphone is connected to
a COM radio through a COM MIC key. For
each crewmember, their COM MIC selection
(COM MIC1 or COM MIC2) makes the selected
COM radio their active transceiver,
connected to their microphone. On each PFD,
this is indicated by green digits for the active
frequency of the primary transceiver. All
other frequencies use white digits. The pilot
16-44 510OM-00
CITATION MUSTANG OPERATING MANUAL
DISPLAY BACKUP
VOL
ICS MSTR
SQ
COM1
MIC COM1
COM2
MIC COM2
COM3
MIC COM3
PA TEL
SPKR
DME
HI
SENS
ADF
NAV1
AUX
NAV2
MUSIC
REC PLAY
INTR
COM
MAN
SQ
MKR
MUTE
1
3
5
7
9
11
13
15
17
18
20
22
24
23
21
19
16
14
12
10
8
6
4
2
Figure 16-45. Audio Panel
510OM-00 16-45
CITATION MUSTANG OPERATING MANUAL
DRAFT
# CONTROL DESCRIPTION
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.
2 COM1 When selected, audio from the #1 Com receiver can be heard.
3 COM2 MIC Selects the #2 transmitter for transmitting. COM2 is simultaneously selected when this key is pressed
allowing received audio from the the #2 Com receiver to be heard.
4 COM2 When selected, audio from the #2 Com receiver can be heard.
5 COM3 MIC Not used on the Cessna Citation Mustang.
6 COM3 Not used on the Cessna Citation Mustang.
7 PA Selects the passenger address system (if installed). The selected Com transmitter is deselected when
the PA key is pressed. There are no cabin speekers. Headset jacks for passagers are an option.
8 TEL Not used on the Cessna Citation Mustang.
9 MUSIC Not used on the Cessna Citation Mustang.
10 SPKR Pressing this key selects and deselects the corresponding cockpit speaker. All audio will be heard on
the speaker, to include audio warnings.
11 MKR/MUTE Activates the marker beacon receiver audio. Pressing mutes the currently received marker beacon
receiver audio. Push again to turn off all marker audio.
12 HI SENS Press to increase marker beacon receiver sensitivity. Press again to return to normal.
13 DME Pressing turns DME audio on or off.
14 NAV1 When selected, audio from the #1 Nav receiver can be heard.
15 ADF Pressing turns on or off the audio from the ADF receiver.
16 NAV2 When selected, audio from the #2 Nav receiver can be heard.
17 AUX Not used on the Cessna Citation Mustang.
18 REC Press to start the recording up to 2.5 minutes of COM receiver audio. When no audio is being
received, nothing is recorded. Press again to stop recording.
19 PLAY Press once to play the last recorded audio. Press again to stop playing. Press twice quickly while
audio is playing and the previous block of recorded audio will be played. Each subsequent two
presses will skip back to the previously recorded block.
20 INTR COM Pressing selects the pilot/copilot intercom on both audio panels. Press again to deselect the intercom.
21 MAN SQ Press to enable manual squelch for the intercom. When active, press the ICS knob to illuminate ‘SQ’.
Turn the ICS knob to adjust squelch.
22 ICS Knob Turn to adjust intercom volume or squelch. Press to switch between volume and squelch control as
indicated by the ‘VOL’ or ‘SQ’ being illuminated. The MAN SQ key must be selected to allow squelch
adjustment.
23 MSTR Knob The master volume control adjusts volume for all headset audio.
24 Reversionary Mode Button Pressing manually selects reversionary mode.
Table 16-9. AUDIO PANEL DESCRIPTIONS
may listen to the other COM radio by selecting
the COM1 or COM 2 button.
Both crewmembers may select the same primary
transceiver, or each may select a different
primary transceiver. If both crewmembers
select the same primary transceiver, and each
crewmember keys their microphone at the same
time, the microphone that transmits through
the COM radio is the microphone of the
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