Gma 347 Preflight - Garmin Cirrus Perspective SR20 Pilot's Manual

AUDIO PANEL AND CNS

GMA 347 PREFLIGHT

After powering up the avionics System, the following steps will aid in maximizing the use of the Audio Panel
as well as prevent pilot and copilot induced issues. These preflight procedures should be performed each time a
pilot boards the aircraft to insure awareness of all audio levels in the Audio Panel and radios.
Pilot Volume and
Manual Squelch
Setting the Audio Panel during preflight:
1) Verify that the PILOT and COPLT Annunciators are extinguished.
2) Verify that manual squelch is set to full open.
3) Turn the PILOT Knob and COPILOT Knob fully clockwise. This will set the headset intercom audio level to max
volume (least amount of attenuation).
4) Adjust radio volume levels (COM, NAV, etc.) to a suitable level.
5) Adjust the PILOT Knob and COPILOT Knob volume to the desired intercom level.
6) Reset squelch to automatic, or adjust to the appropriate level manually.
Once this procedure has been completed, the pilot and copilot can change settings, keeping in mind the notes
above.
Cirrus Perspective
152
Automatic/Manual
Copilot ICS
Squelch Annunciation
Isolation Keys
Figure 4-52 Audio Panel Preflight Controls
by Garmin – Pilot's Guide for the SR20/SR22/SR22T
™
Pilot and
Copilot/Passenger Volume
and Manual Squelch
190-00820-08 Rev. A