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NAV2 (if installed), MKR, DME (if installed), or ADF (if installed) will
select that radio or device as the audio source. Audio level of
navigation receivers is controlled through the selected radio volume
control.
Transceiver audio is selected by depressing COM1, COM2, or COM3
(if installed). When the audio source is selected using the COM1,
COM2, and COM3 buttons, the audio source will remain active
regardless of which transceiver is selected as the active MIC source.
Both transceiver audio and MIC (microphone) can be selected by
depressing COM1 MIC, COM2 MIC, or COM3 MIC (if installed). Both
pilot and copilot are connected to the selected transceiver and both
have transmit and receive capabilities. Pilot and copilot must use their
respective Push-To-Talk (PTT) switch to transmit. The intercom will
function normally. During transmissions the active transmitter’s COM
MIC button LED blinks at a 1 Hz rate indicating active transmission.
Split COM Function
Pressing the COM 1/2 button activates the split COM function. When
split COM is active, COM 1 is the pilot mic/audio source and COM2 is
Revision 02: 07-18-05
P/N 13772-101 5 of 10
Cirrus Design Section 9
SR22 Supplements
the copilot mic/audio source. The pilot has receive and transmit
capabilities on COM1 and the copilot has receive and transmit
capabilities on COM2. While split COM is active, simultaneous
transmission from COM1 and COM2 is not possible.The pilot and
copilot can still listen to COM3, NAV1, NAV2, DME, ADF, and MKR.
Pressing the COM 1/2 button a second time will deactivate the split
COM function. While split COM is active, the copilot is able to make PA
announcements over the cabin speaker allowing the pilot to continue
using COM1 independently. This is accomplished by depressing the
PA button while split COM is active. Pressing the PA button a second
time deactivates this feature and returns the system to normal split
COM as described above.
COM Swap Mode
COM swap mode is not available in this installation.
Speaker Output
Pressing the SPKR button will cause the selected airplane radios to be
heard over the cabin speaker. Speaker output is muted when a COM
microphone is keyed. Speaker level is adjustable through an access
hole in the top of the unit (refer to Garmin installation manual or AMM).
Public Address (PA) Function
Pressing the PA button on the audio control panel activates the PA
function. When PA is activated and either the pilot’s or copilot’s
microphone is keyed (PTT pressed), the corresponding mic audio is
output over the cabin speaker. If the SPKR button is also active, any
previously active speaker audio will be muted while the microphone is
keyed. Pilot and copilot PA microphone speaker levels are adjustable
through an access hole in the top of the unit (refer to Garmin
installation manual or AMM).
Personal Music Inputs
• Note •
Serials 0002 thru 1519 without SB 2X-34-14; Audio from
AUDIO INPUT jacks Music1 and Music2 is muted during
intercom activity.
Revision 02: 07-18-05
6 of 10 P/N 13772-101
Section 9 Cirrus Design
Supplements SR22
The Audio Control Panel has provisions for up to two separate
personal entertainment input (music) devices. These devices are
plugged into the AUDIO INPUT jacks in the center console jack
panels. Music1 is connected at the AUDIO INPUT jack near the
convenience outlet. Music2 is connected to the jack on the aft console.
Music1 is soft-muted during all airplane radio activity. Music1 and
Music2 have characteristics affected by the active ICS isolation mode.
• Pressing the PILOT ICS Isolation button isolates the pilot from
the copilot and passengers. Music1 is available to copilot and
passengers.
• Pressing the CREW ICS Isolation button isolates the crew from
the passengers and allows the pilot and copilot to listen to
Music1 and the passengers to listen to Music2. Radio activity,
MKR activity, and pilot or copilot ICS activity will mute Music1.
Music2 is not muted.
• When both the PILOT and CREW ICS Isolation mode are not
selected, Music1 is available to crew and passengers. Radio
activity and MKR activity will mute Music1.
Intercom
Intercom controls are located towards the left side of the Audio Control
Panel. The controls consist of a Volume control for the pilot and
copilot, a Squelch control for all occupants, and an Intercom Mode
Selector switch.
Volume & Squelch Control
ICS volume and voice operated relay (VOX) squelch control is
controlled through the left (PILOT) and right (COPILOT) control knobs
　
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