Cirrus Design
SR20
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
Serials 1005 thru 1532 and serials before SB 2X-34-14; Audio
from AUDIO INPUT jacks Music1 and Music2 is muted during
intercom activity.
P/N 11934-S01
Revision 1: 07-18-05
• Note •
Section 9
Supplements
5 of 10
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