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Audio Integrating System Components ..............................................................................6-1
Audio Control Panel ............................................................................................................6-2
VHF Communication System - Block Diagram ...................................................................6-3
HF Communication System - Block Diagram......................................................................6-4
Radio Tuning Unit ...............................................................................................................6-5
Reversionary/Inhibit Panel ..................................................................................................6-6
COM/NAV Selections..........................................................................................................6-7
COM 3 Selections ...............................................................................................................6-8
ADF, ATC and TCAS Selections ........................................................................................6-9
HF Selections.................................................................................................................... 6-10
RTU and COM/NAV Failure Indications............................................................................ 6-11
RTU TEMP Annunciation.................................................................................................. 6-12
CVR System .....................................................................................................................6-13
Cockpit Voice Recorder Panel .......................................................................................... 6-14
Flight Data Recorder System............................................................................................ 6-15
Static Dischargers Location .............................................................................................. 6-16
6-iv For Training Purposes Only
May 03
COMMUNICATIONS P I LOT T R A I N I N G GU I D E
Page Intentionally Left Blank
COMMUNICATIONS
For Training Purposes Only
May 03
6-1
P I LOT T R A I N I N G GU I D E
CHAPTER 6: COMMUNICATIONS Introduction
Communications is a function of the Challenger 604 fully integrated avionics system
and includes the following:
• Audio Integrating System
• VHF Communication System
• HF Communication System
• Radio Tuning System
• Cockpit Voice Recorder (CVR) System
• Flight Data Recorder (FDR) System
• Static Dischargers
COMMUNICATIONS
6-2 For Training Purposes Only
Jan 04
P I LOT T R A I N I N G GU I D E
Audio Integrating System
Description
The audio integrating system provides an interface between crew microphones,
speakers, headphones, and the aircraft’s radio, warning and recording systems. The
audio integrating system also provides an interface between any or all flight crew and
ground crew stations.
Components and Operation
The audio integrating system consists of the following components:
• two flight crew jack panels
• three ground crew interphone units (jacks)
• two speakers
• two audio control panels
Flight Crew Jack Panels
Two flight crew jack panels (Pilot and Copilot) are located in the flight compartment.
Ground Crew Interphone-Jack Units
The three ground crew interphone-jack units are installed in the following locations:
• nosewheel well
• main avionics bay
• aft equipment compartment
Each assembly is a metal-case sealed unit which has one microphone jack and one
headphone jack. The microphone jacks in the nosewheel well and aft compartment are
deactivated in flight by the WOW switch.
Speakers
Two independent speakers are mounted in the roof of the flight compartment for the
pilot’s and copilot’s audio systems. The speakers allow audio monitoring without the
use of headphones.
COMMUNICATIONS
For Training Purposes Only
May 03
6-3
P I LOT T R A I N I N G GU I D E
Controls and Indicators
The audio control panels provide controls for selecting and controlling receiver audio
from the COM/NAV systems, and controls for connecting the microphone audio and
keying to the HF/VHF systems.
Audio Integrating System Components
Figure 6-1
HDPH
1 - VHF - 2
1 - DME - 2
1 - NAV - 2 1 - MKR - 2
1 - ADF - 2
R/T
I/C
VOICE
BOTH
SPKR MASK
BOOM
EMER
NORM
PA
VHF 3 1 - HF - 2 INT/SVC
Aft Equipment
Bay
Avionics
Bay
　
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