AIRBUS M35 COMMUNICATIONS SINGLE AISLE TECHNICAL TRAINING MANUAL MAINTENANCE COURSE M35 LINE MECHANICS (V2500A5.ME)

 SINGLE AISLE 
 TECHNICAL TRAINING MANUAL 
 MAINTENANCE COURSE - M35 LINE MECHANICS
(V2500-A5/ME) 
 COMMUNICATIONS 



This document must be used for training purposes only

Under no circumstances should this document be used as a reference

It will not be updated.

All rights reserved
No part of this manual may be reproduced in any form,
by photostat, microfilm, retrieval system, or any other means,
without the prior written permission of AIRBUS S.A.S.



SINGLE AISLE TECHNICAL TRAINING MANUAL

COMMUNICATIONS
GENERAL

MAINTENANCE PRACTICE

Communications Level 2 (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Electrostatic Discharge (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

SPEECH COMMUNICATION
Flight Interphone System D/O (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Radio Communication D/O (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

A/C COM ADDRESSING & REPORTING SYS
(ACARS)(option
ACARS VHF 3 Operation (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

CABIN INTERCOM DATA SYSTEM (CIDS)(Classic)
CIDS Director/DEU Architecture (3) . . . . . . . . . . . . . . . . . . . . . . . . . 18
Cabin Attendant Handset Presentation (3) . . . . . . . . . . . . . . . . . . . . . 22
Passenger Address System Description (3) . . . . . . . . . . . . . . . . . . . . 24
Service Interphone D/O (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Passenger Call System D/O (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Passenger Lighted Signs D/O (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
PTP SYS Test & SYS Status Pages Presentation (3) . . . . . . . . . . . . . 38

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CABIN INTERCOM DATA SYSTEM (CIDS)(Enhanced)
# Cabin Attendant Handset Presentation (3) . . . . . . . . . . . . . . . . . . . 50
Passenger Address System Description (3) . . . . . . . . . . . . . . . . . . . . 52
# Service Interphone D/O (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Passenger Call System D/O (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Passenger Lighted Signs D/O (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
CIDS Programming (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

PASSENGER ENTERTAINMENT SYSTEM (PES)
Passenger Entertainment System Presentation (1) . . . . . . . . . . . . . . . 76

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TABLE OF CONTENTS

May 11, 2006
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SINGLE AISLE TECHNICAL TRAINING MANUAL

COMMUNICATIONS LEVEL 2 (2)
SYSTEM OVERVIEW

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The use of the radio system on the Single Aisle aircraft is extremely
important for the safe operation of the aircraft. While taxiing and towing,
communication is necessary with the tower to safely move the aircraft.
Basic system description and procedures will enable the student to
understand system interconnect and correctly operate the systems by
selecting frequencies and setting transmission and reception modes. In
addition, the use of the Service Interphone communications will also be
explained.
The Panels and equipment that will be explained is as follows:
- Audio Control Panel (ACP),
- Radio Management Panel (RMP),
- Audio Management Unit (AMU),
- radio transceivers,

- acoustic equipment that includes: Boomsets, hand mikes, and handsets.

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COMMUNICATIONS LEVEL 2 (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

SYSTEM OVERVIEW
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COMMUNICATIONS LEVEL 2 (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

COMMUNICATIONS LEVEL 2 (2)
SYSTEM OVERVIEW (continued)
RMP FREQUENCY SELECTION

The Radio Management Panel (RMP) is the Digital tuning head for
the Communications transceivers. They are located in the center
pedestal, with an optional one installed in the overhead for the 3rd
observer seat. The panels have an over center ON/OFF switch. When
the ON/OFF switch is switched to the ON position, two frequencies
that were previously selected appear in the ACTIVE and STandBY
windows. To operate the transceiver, you might have to select a new
frequency on one of the VHF or HF transceivers. To do this, you must
select the Transceiver that you wish to transmit on. To select the radio,
the corresponding radio pushbutton must be pushed on the RMP. The
associated green LED will come on.

OPERATION
When one of the Push-to-Talk (PTT) switches is depressed, the hand
mike is connected, and in this case, the VHF 1 transceiver transmits.
The boomset mike is connected when a PTT is pressed in on the ACP
or on the side stick.
On the ACP, several reception knobs can be selected simultaneously.
If the reception knob is pressed in again, the receiver is disconnected
and the white light goes off.

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TRANSMISSION MODE
To connect one of the acoustical devices (microphone) to the
transmission line, the associated transmission key must be selected
on the Audio Control Panel (ACP).
When the transmission key is pressed (green light illuminated) you
are ready to transmit. This selection can be disabled when you select
another transceiver or when you press the illuminated pushbutton

again. Only ONE transmit key can be selected at a time.

RECEPTION MODE
In order to listen on the selected transceiver, you must operate the
Audio Control Panel (ACP). On the ACP, the reception knobs allows
connection of the headsets / acoustic equipment to the transceiver
reception via the Audio Management Unit. To select a transceiver,
the corresponding reception knob must be released out. The reception
knob comes on white. To adjust the reception volume level, the
selected reception knob must be turned. Communications can now be
established.
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COMMUNICATIONS LEVEL 2 (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

SYSTEM OVERVIEW - RMP FREQUENCY SELECTION ... OPERATION
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23 - COMMUNICATIONS

COMMUNICATIONS LEVEL 2 (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

COMMUNICATIONS LEVEL 2 (2)
SYSTEM OVERVIEW (continued)

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FLIGHT INTERPHONE SYSTEM OPERATION
Flight interphone selection is necessary for voice communications
between flight crew members and for ground handling, taxiing and
towing. This control is performed using the ACP. If the flight crew
needs to maintain contact and communicate with the mechanic, the
flight crew can push the MECHanic pushbutton on the CALLS panel
on the overhead.
The Flight Interphone can also act as a transceiver. Selection of the
INTerphone transmission key lights the green bars, indicating that the
flight interphone is ready to operate. Pressing and releasing the INT
reception knob illuminates the knob and enables adjustment of the
interphone audio level.
The INTerphone/RADio selector switch must be in the INT position.
The INT position enables permanent use of the flight interphone
without any further reaction and whatever radio key is selected. The
INT/RAD switch is a 3-position switch with INT being a stable
position.
The RAD selection connects the pre-selected channel to transmit. The
RAD position is a momentary contact, and is spring loaded to the

center position. This position acts like the selection of the hand
microphone pushbutton or the Push To Talk trigger on the side-stick.

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COMMUNICATIONS LEVEL 2 (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

SYSTEM OVERVIEW - FLIGHT INTERPHONE SYSTEM OPERATION
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COMMUNICATIONS LEVEL 2 (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

COMMUNICATIONS LEVEL 2 (2)
SYSTEM OVERVIEW (continued)

SERVICE INTERPHONE SYSTEM OPERATION

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The service interphone system is made up of eight service interphone
jacks located around the aircraft to facilitate communications between
maintenance personnel during troubleshooting, and between
maintenance and flight crew when performing coordinated tasks; i.e.
Manual start valve operation.
The audio lines from the cockpit, cabin and interphone jacks are routed
to the amplifiers through the amplifiers in the Cabin
Intercommunication and Data System (CIDS) Directors. The system
is integrated in the CIDS directors. There are 2 modes to connect the
jacks to the service interphone. The automatic mode on ground only
with the landing gear down and compressed OR the external power
contactor connected. The other mode is mentioned in the
MAINTENANCE TIPS section.

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COMMUNICATIONS LEVEL 2 (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

SYSTEM OVERVIEW - SERVICE INTERPHONE SYSTEM OPERATION
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COMMUNICATIONS LEVEL 2 (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

COMMUNICATIONS LEVEL 2 (2)
MAINTENANCE TIPS

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When jacking the aircraft it might be necessary to communicate between
personnel at various points around the aircraft. Once the weight off
wheels, the service interphone system is disabled due to the logic of the
system. The Landing Gear Control and Interface Unit (LGCIU) on ground
discrete disables all service interphone connections.
The reason for this is to eliminate potential static noise generated and
amplified through the AMU due to the length of wires acting as antennae,
into the audio system.
To re-enable the service interphone, the SerViCE INTerphone OVeRriDe
P/BSW must be switched to 'ON'. The Service Interphone Override switch
is a guarded switch located on the Maintenance Panel 50VU on the
overhead in the cockpit.

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COMMUNICATIONS LEVEL 2 (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

MAINTENANCE TIPS
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23 - COMMUNICATIONS

COMMUNICATIONS LEVEL 2 (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

FLIGHT INTERPHONE SYSTEM D/O (2)
INT SELECTION
The INT position of the INTerphone/RADio selector switch enables
permanent use of the flight interphone without any further action and

whatever the radio key selected (here VHF 1). This is a stable position.
NOTE: : The radio function has priority over the flight interphone
function. So, even with the INT/RAD switch in INT position,
the flight interphone is momentarily cut during a radio emission
(radio key selected and hand microphone or side-stick Push To
Talk (PTT) actuated).

RAD SELECTION
The RAD position of the INT/RAD selector switch puts the pre-selected
channel in emission (here VHF 1). This is an unstable position. This
position acts like the selection of the hand microphone pushbutton or like
the PTT pushbutton of the side-stick.

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INT KEY AND KNOB
The flight interphone is selected like a VHF transceiver. Selection of the
INT transmission key lights the green bars, indicating that the flight
interphone is ready to operate. Pressing and releasing the INT reception
knob adjusts the interphone level. If done, the knob comes on white.
Placing and holding the INT/RAD switch in RAD position lets the
operator talk through the flight interphone system.

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FLIGHT INTERPHONE SYSTEM D/O (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

INT SELECTION ... INT KEY AND KNOB
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23 - COMMUNICATIONS

FLIGHT INTERPHONE SYSTEM D/O (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

RADIO COMMUNICATION D/O (2)
FREQUENCY SELECTION

knobs can be selected simultaneously. If the reception knob is pressed
in again, the receiver is disconnected and the white light goes off.

On the Radio Management Panel (RMP), when the ON/OFF switch is
set to ON position, two frequencies previously selected appear on the
windows. To select a new frequency in a different system, the related
key must be pressed in on the RMP. The associated green light comes
on. The desired frequency can be selected in the STand-BY/CouRSe
window using the dual selector knob. Pressing the transfer pushbutton,

activates the frequency and displays it in the active window, whereas the
previous active frequency becomes stand-by.

TRANSMISSION MODE
To connect the transmission line to the chosen transmitter, the
corresponding transmission key must be pressed in on the Audio Control
Panel (ACP). Only one transceiver can be selected at a time. This selection
can be disabled when:
- the transmission key, previously selected, is pressed in again,
- another transmitter is selected.

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RECEPTION MODE
On the ACP, the reception knob makes the connection of the headset to
the transceiver reception. To select a receiver, the related reception knob
must be released out. The reception knob comes on white. To adjust the
reception level, the selected reception knob must be turned. The
communication can now be established.

OPERATION
When the Push-To-Talk (PTT) switch is pressed in, the hand mike is
connected and the VHF1 transceiver transmits. The Boomset mike is
connected when the PTT is pressed in on the Side Stick or the PA
transmission key is pressed in on the ACP. On the ACP, several reception
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RADIO COMMUNICATION D/O (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

FREQUENCY SELECTION ... OPERATION
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23 - COMMUNICATIONS

RADIO COMMUNICATION D/O (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

ACARS VHF 3 OPERATION (2)
ACARS NORMAL OPERATION
This sequence deals with the useof the Radio Management Panel (RMP)
when VHF 3 is selected. One window displays ACARS: the frequency
is then controlled by the Aircraft Communication Addressing and
Reporting System Management Unit (ACARS MU). The other window
shows a frequency value. When this value is in the ACTIVE window,
the VHF3 is in voice mode and its frequency is controlled by the RMP.

ACARS FAILURE

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With the ACARS MU failed or selected OFF, the VHF 3 can only be
used with the Audio Management Unit (AMU) in normal audio
communication.

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ACARS VHF 3 OPERATION (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

ACARS NORMAL OPERATION & ACARS FAILURE
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23 - COMMUNICATIONS

ACARS VHF 3 OPERATION (2)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

CIDS DIRECTOR/DEU ARCHITECTURE (3)
DEU A
Twenty six to thirty two type A Decoder/Encoder Units (DEUs) are
installed above the windows in the cabin ceiling and close to the center
ceiling for the DEUs in the entrance area. The type A DEUs are connected
to the directors (DIRs) via a top-line data bus (i.e. : two wire twisted and
shielded cable). A broken wire in one top-line bus will only affect the
type A DEUs behind the crack on this bus. The type A DEUs of the other
top-line bus will work without disturbance.

PASSENGER CALL
Pushbuttons are installed on the PSU above each seat row and in the
lavatories.

READING/LIGHT POWER UNIT
One Reading/Light (R/L) power unit for three R/L is installed in each
PSU.

PASSENGER SIGNS
The passenger signs include NO SMOKING or the optional NO
ELECTRONIC DEVICE lights, FASTEN SEAT BELT lights, NON
SMOKER ZONE lights and RETURN TO SEAT lights in the
lavatories. Furthermore, for the passenger call system, the seat row
lights are connected to the type A DEUs.

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CABIN LIGHTS

The cabin lights include:
- entrance area lights,
- lavatory lights,
- attendant lights,
- reading lights,
- cabin fluorescent strip lights.

LOUDSPEAKERS
The loudspeakers are installed in the Passenger Service Unit (PSU),
in each lavatory and near the attendant station. They are all identical
and are used for:
- passenger address announcements,
- call chimes (optional).

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CIDS DIRECTOR/DEU ARCHITECTURE (3)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

DEU A - PASSENGER SIGNS ... READING/LIGHT POWER UNIT
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23 - COMMUNICATIONS

CIDS DIRECTOR/DEU ARCHITECTURE (3)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

CIDS DIRECTOR/DEU ARCHITECTURE (3)
DEU B
Basically 4 type B DEUs (optional maximum of 6), are installed near the
exit doors in the center ceiling (Except A321, which can be equipped
with 8 DEUs B). They are connected to the DIRs via a middle line data
bus. There are two supplementary DEU B mounts installed as a provision.
Type B DEU interface, may vary with different locations and with specific
airline requirements.

DRAIN MAST
The DIRs receive signals from the drain mast control unit via type B
DEUs. If the drain mast heater or the control unit fails the CIDS CAUT
light on the FAP comes on.

ATTENDANT INDICATION PANEL
One Attendant Indication Panel (AIP) is installed near each attendant
seat for message purposes.

SLIDE PRESSURE SYSTEM (OPTIONAL)

AREA CALL PANEL

The DIRs receive signals from the bottle pressure sensors via type B
DEUs. If the pressure is low, the Cabin Intercommunication Data
System (CIDS) CAUTion light on the Forward Attendant Panel (FAP)
comes on.

One basic and one optional Area Call Panel (ACP) can be connected
to each DEU B.

DOOR PRESSURE SYSTEM (OPTIONAL)

ADDITIONAL ATTENDANTL PANEL
One Additional Attendant Panel (AAP) is installed near the after
attendants station.

The DIRs receive signals from the bottle pressure sensors via type B
DEUs. If the pressure is low, the CIDS CAUT light on the FAP comes
on.

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CREW INTERPHONE SYSTEM
The crew interphone system is used for the communication between
cockpit crew and cabin attendants and between each attendant station.
NOTE: From each attendant station it is possible to communicate
with personnel at the service interphone connections.

EPSU
The Emergency Power Supply Units (EPSU) are connected to type
B DEUs for the emergency lighting system test.

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CIDS DIRECTOR/DEU ARCHITECTURE (3)

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SINGLE AISLE TECHNICAL TRAINING MANUAL

DEU B - SLIDE PRESSURE SYSTEM (OPTIONAL) ... ADDITIONAL ATTENDANTL PANEL
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CIDS DIRECTOR/DEU ARCHITECTURE (3)

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