7-84 P/N 13772-003
Section 7 Cirrus Design
Airplane and Systems Description SR22T
Headset and Microphone Installation
The airplane is equipped with provisions for four noise-canceling
headsets with integrated microphones. The forward
microphone-headsets use remote Push-To-Talk (PTT) switches
located on the top of the associated control yoke grip. The rear
headsets do not have COM transmit capabilities and do not require
PTT switches. The microphone (MIC), headset, and automatic noise
reduction (ANR) power jacks for the pilot and front seat passenger are
located in the map case and similar jacks for the aft passengers are
located on the aft portion of the center console. Audio to all four
headsets is controlled by the individual audio and volume selectors on
the audio control panel.
Audio Input Jack
Two 3.5 mm audio input jacks (AUDIO INPUT) are provided on the aft
portion of the center console. One jack is located near the
convenience outlet for use by the pilot and forward passenger, and
another is located further aft by the rear passenger ANR power jacks.
These jacks can be used to plug in personal entertainment devices
such as portable radios, cassette players, or CD players. Audio volume
through these jacks is controlled by connected individual
entertainment device.
Cell Phone Input Jack
One 2.5 mm cell phone jack (CELL PHONE INPUT) is provided on the
aft portion of the center console near the convenience outlet. This jack
provides full-duplex telephone interface with intercom isolation and
disable capability. Cabin audio volume through this jack is controlled
by the volume selector on the audio control panel.
Avionics Cooling Fans
Electric fans provide forced ambient-air cooling for the Integrated
Avionics System. A fan located forward of the instrument panel
provides ambient air cooling directly to the Integrated Avionics Units.
Two additional fans blow air directly onto the heat sinks located on the
forward sides of the PFD and MFD.
28 VDC for MFD Fan operation is supplied through the 5-amp
AVIONICS FAN 1 circuit breaker on NON-ESSENTIAL BUS. 28 VDC
for PFD and Integrated Avionics Unit Fan operation is supplied through
the 5-amp AVIONICS FAN 2 circuit breaker on MAIN BUS 2.
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