Garmin G1000 Piper PA-46 Meridian - Manual (Page 113)

190-00763-01 Rev. A Garmin G1000 Pilot’s Guide for the Piper PA-46 Meridian 99
AUDIO PANEL AND CNS
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EICAS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
SECTION 4 AUDIO PANEL AND CNS
4.1 OVERVIEW
The Communication/Navigation/Surveillance (CNS) system includes the Audio Panels, communication radios,
navigation radios, and Mode S transponders. The System Overview Section provides a block diagram description
of the Audio Panels and CNS system interconnection.
CNS operation in the Piper PA-46-500TP Meridian is performed by the following Line Replaceable Units
(LRUs):
• Primary Flight Display (PFD) (2)
• Multifunction Display (MFD)
• Integrated Avionics Unit (2)
• Audio Panel (2)
• Mode S Transponder (2 Optional)
• MFD/PFD Control Unit
The PFD controls are used to tune the communication transceivers and navigation radios.
The two Audio Panels provide the traditional audio selector functions of microphone and receiver audio
selection. The Audio Panels include an intercom system (ICS) between the pilot, copilot, and passengers, a
marker beacon receiver, and a COM clearance recorder. Ambient noise from the aircraft radios is reduced by a
feature called Master Avionics Squelch (MASQ). When no audio is detected, MASQ processing further reduces
the amount of background noise from the radios.
The Mode S Transponder(s) are controlled with softkeys and the FMS Knob located on the Primary Flight
Display PFD. The Transponder Data Box is located to the left of the System Time Box. The data box displays the
active four-digit code, mode, and a reply status (Figure 4-1).