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INTERPHONE COMMUNICATION
The interphone communication consists of the following internal and external components:
Flight Compartment Speakers
Individual speakers are installed in the flight compartment to monitor audio selected at pilot/copilot
audio control panels. A speaker volume control is located on each audio panel and can be
selected off by the “ST” switch on each control panel, unless the oxygen mask mic is in use.
GF0610_001
SPEAKERS
AUDIO CONTROL
PANELS
Flight Crew Intercom
The flight crew intercom system permits communications between stations within the airplane,
selection and monitoring of audio on the communications and navigation receivers and selection
for transmission on the communications transceivers. Flight crew can select and monitor the audio
output of one or more communications transceivers and navigation receivers.
Crew members can key communications transmission as follows:
· Audio control panel − hot mic (H’MIC) and intercom (INT) switch.
· RT/IC switch on the back side of each control wheel.
COMMUNICATIONS
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
06−10−1
INTERPHONE COMMUNICATION (CONT'D)
Flight Crew Intercom (Cont’d)
Flight compartment microphone and headset jacks are installed at the following locations:
· Below pilot’s side console.
· Below copilot’s side console.
GF0610_002
HEADSET PANEL
MIC
HEADSET
HDPH
Service Intercom Panels
Service intercom panels are provided throughout the airplane and permit hot microphone
communication between locations and interface with the flight compartment when selected on the
audio control panel. A headphone and microphone jack are installed at each location. Hand
microphones with a PressToTalk
(PTT) switch are attached to the front of each control wheel.
Microphone and headset jacks are installed at the following external airplane locations:
· Forward and rear externals services panel.
· Aft equipment bay.
· Avionics bay.
Forward External Services Panel Interphone Station
GF0610_003
HDPH MIC
NLG Bay Light
ON
COMMUNICATIONS
Flight Crew Operating Manual Rev 2A, Apr 11, 2005
CSP 700−5000−6
Volume 2
06−10−2
INTERPHONE COMMUNICATION (CONT'D)
Aft External Services Panel Interphone Station
GF0610_004
Aft Equipment Bay Interphone Station
GF0610_005
Avionics Bay Interphone Station
GF0610_006
COMMUNICATIONS
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
06−10−3
INTERPHONE COMMUNICATION (CONT'D)
Radio Transmit Switch
Each contol wheel has a toggle switch which activates the selected radio transmitter or the
interphone.
FGF0610_002
Pilot control wheel is
shown, copilot’s opposite.
NOTE
(radio transmit
switch located
behind)
AUDIO CONTROL PANEL
The Audio Control Panels (ACPs) operate independently to the remote COMM and NAV units and
provide onside/
crossside
selection. They also control the audio to and from the radios, intercom,
PA and aural warning system.
AUDIO CONTROL PANEL INPUT SCHEMATIC
GF0610_008
TCAS
EGPWS
INTERPHONE AUDIO
(flight/service)
AURAL WARNING SYSTEM
PA SYSTEM
MICROPHONE AUDIO
(hand, boom and mask
mics.)
AUDIO − OPTIONAL SYSTEMS
AUDIO CONTROL PANEL
COMMUNICATIONS
Flight Crew Operating Manual Rev 2A, Apr 11, 2005
CSP 700−5000−6
Volume 2
06−10−4
AUDIO CONTROL PANEL SWITCH OPERATION
GF0610_009
TRANSMIT/EMER
MICROPHONE
SELECTION
SPEAKER/
HEADPHONE
NAV3
The audio control switch panel operation is as follows:
Transmit/Emer
The channel is active when the associated bar illuminates. Only one pushbutton
can be selected
at a time.
· EMER − When pressed, the microphone is connected directly to the onside
VHF (COMM)
transceiver and the audio is connected directly to the airplane’s headphone. This mode
disables all other audio control unit modes. When the EMER key is pressed, headphones
are required regardless of the position of the MIC/MASK. Both the oxygen mask and
headphones are to be worn simultaneously in EMER and MASK operation with EMER
selected.
Microphone Selection
Connects the MIC audio and PTT to the selected COMM or NAV radios, or PA when pushed in.
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