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When the Garmin GMA 340 Audio Panel and the optional XM Radio
System are installed in the Cirrus Design SR22, this Supplement is
applicable and must be inserted in the Supplements Section (Section
9) of the Cirrus Design SR22 Pilot’s Operating Handbook (Handbook).
Information in this supplement either adds to, supersedes, or deletes
information in the basic Handbook.
• Note •
This POH Supplement Revision dated Revision 02: 07-18-05
supersedes and replaces the original issue of this supplement
dated 07-03-04. This revision adds required data for the
optional XM Radio System available for the Garmin GMA 340.
Revision 02: 07-18-05
2 of 10 P/N 13772-101
Section 9 Cirrus Design
Supplements SR22
Figure - 1
Section 1 - General
This supplement provides detailed operating instructions for the
Garmin GMA 340 Audio Selector Panel/Intercom System with internal
Marker Beacon. This supplement covers the basic operating areas of
the Audio Control Panel.
• Power On / Fail-safe Operation
• Audio / Transceiver Selection
• Speaker Output
• Public Address (PA) Function
• Personal Music Inputs
• Intercom (ICS)
1. Marker Beacon Annunciators
2. Marker Audio Select Button / LED
3. Marker Sensitivity Select Button
a. HI Sensitivity LED
b. LO Sensitivity LED
4. Pilot Intercom Squelch (outer knob)
5. Power / Intercom Volume (inner knob)
6. Transceiver Audio Select Buttons/
LEDs
7. Photocell
8. Receiver Audio Select Buttons / LEDs
9. Transceiver Audio/Transmit Select
Buttons / LEDs
10. Split COM Button / LED
11. Cabin Audio Select Buttons / LEDs
a. SPKR, Cabin Speaker
b. PA, Public Address
12. Intercom Isolation Buttons / LEDs
a. PILOT Intercom Mode
b. CREW Intercom Mode
13. Copilot / Passenger Intercom
Squelch (outer knob)
14. Copilot (IN) / Passenger (OUT)
Intercom Volume (inner knob)
15. Indicator Test Button
5 4 3 9 10 11 12 13 14
1 2 6 7 8 15
SR22_FM09_1108
Audio Control Panel
Revision 02: 07-18-05
P/N 13772-101 3 of 10
Cirrus Design Section 9
SR22 Supplements
Section 2 - Limitations
Use of auxiliary AUDIO IN entertainment input and the optionally
installed XM Radio System is prohibited during takeoff and landing.
Section 3 - Emergency Procedures
In the event of an audio panel power failure, the audio system will
revert to COM 1 for the pilot’s mic and headphones and the pilot will
have transmit and receive capability.
Section 4 - Normal Procedures
Refer to Section 7 - System Description in this supplement for a
complete description and operation of the Audio Control Panel.
Section 5 - Performance
No change from basic Handbook.
Section 6 - Weight & Balance
Garmin GMA 340 Audio System: No change from basic Handbook.
Installation of the optional XM Radio System adds the following
optional (Sym = O) equipment at the weight and arm shown in the
following table.
Section 7 - System Description
Power On and Fail-safe Operation
The Audio Control Panel is powered ‘OFF’ when the left inner knob
(PILOT) is at the full CCW (counter-clockwise) position. Rotating the
knob CW (clockwise) activates the unit. CW rotation of knob beyond
the ‘on’ detent increases pilot ICS (intercom system) volume.
ATA /
Item
Description Sym Qty Part Number
Unit
Wt
Arm
22-01 XM Receiver O 1 16665-001 1.7 114.0
Revision 02: 07-18-05
4 of 10 P/N 13772-101
Section 9 Cirrus Design
Supplements SR22
A fail-safe circuit connects the pilot’s headset directly to the COM1
transceiver in the event of a power failure to the audio control panel or
the panel is switched ‘OFF.’
Test
Pressing the TEST button illuminates all Panel LEDs and the Marker
Beacon Annunciators full bright. During normal operation, a photocell
mounted at the approximate center of the control panel senses
ambient light to allow automatic LED and annunciator intensity
adjustment. Nomenclature dimming is controlled by the INST lights
control on the instrument panel bolster.
Audio/Transceiver Selection
Audio selection is performed through the eight selector push buttons in
the center of the Audio Control Panel. All audio selector push buttons
are push-on, push-off. Selecting an audio source supplies audio to the
headphones or cabin speaker. Selected audio sources are indicated
by illumination of the push-button switch.
Navigation receiver audio source is selected by depressing NAV1,
　
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