Becker | DVCS5100 | manual | Becker DVCS5100 Digital Voice Communication System Manual

Becker DVCS5100 Digital Voice Communication System Manual
Audio Control Unit
ACU 5100-(x)-(xxx)
Installation and Operation
Manual
Issue 3
DV 64410.03
February 2004
Becker Flugfunkwerk GmbH • Baden Airpark • 77836 Rheinmünster • Germany
Telephone +49 (0) 7229 / 305-0 • Fax +49 (0) 7229 / 305-217
http://www.becker-avionics.com • e-mail: info@becker-avionics.de
FIRST ISSUE AND CHANGES
Issue . . . . . 3 . . . . . February 2004
LIST OF EFFECTIVE PAGES
Page No.:
Date :
Title
i-1 - i-2
02/2004
02/2004
1 -I - 1-II
1-1 - 1-8
02/2004
02/2004
2-I - 2-II
2-1 - 2-8
02/2004
02/2004
3-I - 3-II
3-1 - 3-22
02/2004
02/2004
Page No.:
DV 64410.03 / Article Number 0545.651-071
© 2001 by Becker Flugfunkwerk GmbH / All rights reserved
Date :
ISO 9001
Certified Quality System
Das Becker- Qualitätsmanagementsystem ist zertifiziert nach:
The Becker quality management system is certified according to:
DIN EN ISO 9001 CERT Reg. - Nr. 70 100 M 2082
Zulassungen und Genehmigungen:
Licenses and Approvals:
BWB-1921Y-B07/9701
Zulassung als Luftfahrtbetrieb für Luftfahrtgerät der Bundeswehr
Manufactures license for aviation equipment to the German armed forces
LBA.G.0075
Genehmigung als Herstellerbetrieb nach JAR-21, Abschnitt G
Production Organization Approval, JAR-21, Subpart G
LBA.0166
Genehmigung als Instandhaltungsbetrieb nach JAR-145
Maintenance Organization Approval, JAR-145
Qualitätszertifikat
Certificate of qualitiy
Sehr geehrter Kunde,
Dear Customer,
Sie haben sich für den Kauf eines Becker Produktes entschieden. Hiermit erhalten Sie ein
nach modernsten Fertigungsmethoden
hergestelltes Produkt. Es wurde nach den Regeln
unseres
Qualitätsmanagementsystems
entwickelt, gefertigt und geprüft.
you have decided to buy a Becker product. You
are assured of receiving a product that is
manufactured using the most modern methods
available. This product was developed,
manufactured and tested in compliance with our
quality management system standards.
ACU 5100
SAFETY INFORMATION
For the safe operation of Audio Control Unit ACU 5100 the following notes have to followed :
n
Do not connect the unit to an a.c. voltage or voltage source of more than 30.3 V d.c.
n
Do not connect the unit to a power source with the polarities incorrect.
n
The unit should be protected from the aircraft system by its own 1 A circuit braker.
n
A speech test is to be performed before startup.
n
Use a loud voice for speech communication and hold the microphone close to the
lips. Otherwise cabin noise can be intrisive and make understanding difficult.
n
Use only microphone or headsets which are suitable for use in the aircraft.
Additional instructions :
n
Additional safety instructions in this manual shall also be complied with.
DV 64410.03/.04 Issue 2 Feb/2004
Page i-1
ACU 5100
TABLE OF CONTENTS
Section
1
GENERAL INFORMATION
1.1
1.2
1.3
1.3.1
1.3.2
1.4
1.4.1
1.4.2
1.4.3
1.4.4
1.4.5
1.5
1.6
1.7
1.8
1.9
Introduction
Application
General description
Mechanical description
Electrical description
Technical data
Power supply
Control data transfer ACU-REU
Mechanical data
Unit connectors
Environmental conditions
Software
Approvals
Environmental qualification (EUROCAE/RTCA ED-14D/DO-160D)
Scope of delivery
Accessories (not contained in the scope of delivery)
DV 64410.03/.04 Issue 3 Feb/2004
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1-1
1-1
1-2
1-2
1-2
1-4
1-4
1-4
1-4
1-5
1-5
1-5
1-6
1-6
1-7
1-7
Page 1-I
ACU 5100
BLANK
Page 1-II
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
Section
1.1
1
GENERAL INFORMATION
Introduction
The BECKER ACU 5100 Audio Control Unit is described in the ”Installation and Operation” DV
64410.03 and “Maintenance and Repair” DV 64410.04 manuals.
The manuals contain the following sections :
Section
1.2
DV 64410.03
DV 64410.04
1
General Information
X
X
2
Installation
X
X
3
Operation
X
X
4
Theory of Operation
X
5
Maintenance and Repair
X
6
Ilustrated Parts List
X
7
Modification and Changes
X
8
Circuit Diagrams
X
9
List of the used Abbreviations
X
Application
The ACU 5100 audio control unit is part of the Digital Voice Communication System DVCS 5100 and
provided for installation in an aircraft. It serves for the control of REU 5100 remote electronic unit. Maximum six audio control units can be connected to the REU 5100. The audio control unit is identical for
each installation location (cabin, cockpit, etc.).
DV 64410.03/.04
Issue 3 Feb/2004
Page 1-1
ACU 5100
1.3
General description
1.3.1
Mechanical description
The ACU 5100 is designed for installation in the operator console of aircraft. The dimensions correspond to the ARINC 601 standard for control units. Installation is by means of four DZUS fasteners.
The two unit connectors and one unit connector jack are fitted on the back. The audio control unit consists of the following electrical assemblies respectively circuit boards :
• Illumination Board,
• Processor Board and connector board BG-17,
• Connector Board.
1.3.2
Electrical description
All controls and indicators of the ACU 5100 are located on the front panel :
1 rotary switch, 10 positions, to preselect the active transceiver as well as Public Address or
Intercom mode. Also to select dual transmission mode if provided (option).
Up to 22 pushbuttons (momentary action), of which
- 8 monitoring buttons furnished with two LEDs each for transceivers / PA (green LED: monitoring; yellow LED: transmitting)
- up to 8 monitoring buttons with LEDs for navigation receivers (green LED: monitoring)
-1 PTT button, toggle switch (momentary action)
- 1 VOICE button with LED to switch on and off the ident filter (green LED: filter on, ident frequency 1020 Hz suppressed)
- 2 buttons lettered ISOL CALL, or CLR, respectively with LEDs to control the intercom
functions between cockpit and cabin area and to enable RX / TX monitoring in the cabin
- 1 SPKR button with LED to switch on and off the cockpit speaker (green LED: speaker on)
if speaker function is provided
- 1 TEST button to initiate the BITE for all control functions
- 1 INIT button to on/off switch for ACU initialization
1 toggle switch with locking lever lettered EMER to initiate fall-back into Back-up operation
(optional).
1 dual increment sensor without detent to control main volume and using the respective TX or RX
pushbutton - to set the individual RX volumes. The 2nd portion serves as IC volume control.
The functional inscriptions of key caps, rotary switch, and increment sensor are finished in white translucent characters. Inscription of key caps is variable, i.e. easily changed on the complete unit. Illumination is compatible with commonly used night vision goggles (NVG).
Page 1-2
DV 64410.03/.04
Issue 3 Feb/2004
ACU 5100
Every audio control unit has a microcontroller to process switch and button activations as well as indication signals. Control data is transferred via the Becker Bus Interface. SLAVE position (toggle switch)
and Back-up toggle switch are not be routed through the interface but must be hard-wired in order to
allow Back-up operation, even if the unit had failed.
Audio control units are factory configurable to different operation profiles, e.g. disabling certain transceiver or receiver accessibility in the cabin / passenger area. Audio control units may also be equipped
with front panels imprinted to customer requests.
Identification of Article
Types of Audio Control Unit
Audio Control Unit
Part Number ACU 5100-(X)-(XXX)
ACU 5100-(X)-(XXX)
120
220
130
Illumination Voltage 28V; NVG compatibility;
Panel color = black, panel design as shown in
figure 2.1
Illumination Voltage 28V; no NVG compatibility
Panel color = black, panel design as shown in
figure 2.1
Illumination Voltage 28 V; NVG compatibility;
Panel color = black, panel design as shown
in figure 2.2
2
Eurocopter Standard
Identification Number
Audio Control Unit
DV 64410.03/.04
Issue 3 Feb/2004
Page 1-3
ACU 5100
1.4
Technical data
1.4.1
Power Supply
Supply voltage (Bus) I
27.5 V DC nominal
18.0 V DC emergency
Supply voltage (Bus) II
27.5 V DC nominal
18.0 V DC emergency
Current consumption (with panel illumination)
< 120 mA (one ACU)
2 dim inputs :
Illumination control voltage for NVG
Illumination control voltage for night
Illumination control voltage for day
1.4.2
0...15 V DC
15...22 V DC
22...27.5 V DC
Control data transfer ACU-REU
Interface
BBI, Becker Bus Interface
Protocol
BBP, Becker Bus Protocol
1.4.3
Mechanical data
Width
145.8 mm
Heigth
75.8 mm
Depth
108.8 mm
Standard
ARINC 601
Weight
≤ 600 g
Mounting
D-ZUS
Page 1-4
DV 64410.03/.04
Issue 3 Feb/2004
ACU 5100
1.4.4
Unit connectors
- connector P1
- connector P2 (B-Bus)
- locking device
1.4.5
10-pol. series 851
19-pol. series 851
bajonet
Environmental conditions
Input voltage range
- nominal input voltage
- emergency input voltage
22.0 to 30.3 V DC
27.5 V DC
18.0 V DC
Operating temperature
-40° C … +70° C
Storage temperature
-55° C … +85° C
Altitude max.
50,000 ft.
Humidity rating
RTCA DO-160D, Cat. B,
Vibration
RTCA DO-160D, Cat. S,
vibration curves M
RTCA DO-160D, Cat. U,
vibration curves F/F1
Operational shock
6 g in all direction
Crash safety
20 g shocks
20 g acceleration
Compass safe distance magnetic effect
no influence at a distance
of 30 cm, EUROCAE /
RTCA ED-14D/DO-160D Class Z
Environmental categories :
EUROCAE/RTCA ED-14D/DO-160D
Env.Cat. [D1-]BB[(BR)][(SM)(UF/F1)]XXXXXXZBAAA[VVR]M[A3E3]XXA
1.5
Software
All data for ACU 5100 is stored in the microcontroller. If the control elements are altered, a data transmission immediately takes place to the remote electronic unit. The software is classed as level C in accordance with the EUROCAE / RTCA document ED12B / DO-178B.
DV 64410.03/.04
Issue 3 Feb/2004
Page 1-5
ACU 5100
1.6
Approvals
LBA-No.:
TBD
JAR TSO
JTSO - C50c Audio Selector
Panels and Amplifiers
Software
EUROCAE/RTCA DO-178B/
ED-12B Level C
1.7
Environmental qualification (EUROCAE/RTCA ED-14D/DO-160D)
Characteristic
Section
Category
ED-14D/DO-160D
Temperature / Altitude
Low ground survival temperature
Low operating temperature
High ground survival temperature
High short-time operating temperature
High operating temperature
In-Flight loss of cooling
Altitude
Temperature variation
Humidity
Shock
Vibration
4.0
4.5.1
4.5.1
4.5.2
4.5.2
4.5.3
4.5.4
4.6.1
5.0
6.0
7.0
8.0
D1
D1
D1
D1
D1
D1
D1
B
B
B
S
Explosion proofness
Water proofness
Fluids susceptibilities
Sand and dust
Fungus resistance
Salt spray
Magnetic effect
Power input (DC)
Voltage spike
Audio frequency conducted susceptibility
Induced signal susceptibility
Radio frequency susceptibility
Emission of RF
Lightning induced transient susceptibility
Lightning direct effects
Icing
Electrostatic discharge (ESD)
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
21.0
22.0
23.0
24.0
25.0
U
X
X
X
X
X
X
Z
B
A
A
A
VVR
M
A3E33
X
X
A
Page 1-6
Condition
-55° C
-40° C
+85° C
+70° C
+55° C
no auxiliary cooling required
50,000 ft.
5° C per minute
48 h at 65°C at 95% RH
Test Type R in all 6 directions
M
F/F1
less than 0.3 m
DV 64410.03/.04
Issue 3 Feb/2004
ACU 5100
1.8
Scope of delivery
ACU 5100-(2)-(120) audio control unit (NVG)
Article-No.: 0527.025-921
ACU 5100-(2)-(220) audio control unit (SUN)
Article-No.: 0551.309-921
ACU 5100-(2)-(130) audio control unit (NVG)
Article-No.: 0546.801-921
NOTE: The variants are different by a NVG or SUN panel and by other panel markings.
1.9
Accessories (not contained in the scope of delivey)
Connector Kit CK 5102-C
Article-No.: 0586.889-954
consist of
10-pol. cable connector, crimp
Article-No.: 0858.188-277
19-pol. cable connector, crimp
Article-No.: 0794.279-277
CSW 5100 configuration software
Article-No.: 0543.195-909
DV 64410.03/.04
Issue 3 Feb/2004
Page 1-7
ACU 5100
Blank
Page 1-8
DV 64410.03/.04
Issue 3 Feb/2004
ACU 5100
TABLE OF CONTENTS
Section
2
INSTALLATION
2.1
2.2
2.3
2.4
2.4.1
2.4.2
2.4.3
2.5
General
Inspection before installation
Mechanical installation
Aircraft wiring
General
Panel illumination
Connector pin assignments
Configuration software
2-1
2-1
2-1
2-1
2-1
2-4
2-4
2-6
Fig. 2-1
Fig. 2-2
Fig. 2-3
Fig. 2-4
Fig. 2-5
Fig. 2-6
Installation dimensions ACU 5100 (measures in mm)
Physical locations of ACU 5100 connectors
Logical pin assignment ACU 5100
ACU 5100 power connections
ACU 5100 connections
ACU 5100 bus connections
2-2
2-3
2-3
2-5
2-5
2-7
DV 64410.03/.04 Issue 3 Feb/2004
Page
Page 2-I
ACU 5100
BLANK
Page 2-II
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100-(x)-(xxx)
Section
2.1
2
INSTALLATION
General
The installation of the audio control unit depends on the type of aircraft and its equipment and therefore
only general information can be given in this section.
2.2
Inspection before installation
Before installing the audio control unit in an aircraft, carry out a visual inspection for any transport damage, paying particular attention to the following:
- Dirt, dents, scratches, corrosion, broken attaching parts on the housing and housing parts.
- Dirt and scratches on the identification plate, front panel and marking.
- Dirt, bent or broken pins, cracked connector inserts.
- Dirt and mechanical damage on the rotary switches, push-buttons and knobs.
- Missing screws.
2.3
Mechanical installation
The audio control unit is designed for installation in the operator console of an aircraft. The necessary
dimensional details are given in Fig. 2-1. The unit is attached using four DZUS fasteners.
2.4
Aircraft wiring
2.4.1
General
The ACU connections can be see in Fig. 2-4 to Fig. 2-6 . The following points are to be observed for the
wiring :
a. Only cable fit for aviation (self-extinguishing) may be used. AWG 20 for power supply and AWG 24
for other cables.
b. The interface lines are each to be laid as 2-core twisted and screened (AWG 24) cables.
c. Every single cable harness of a unit connector must get a separate screening.
d. Rubber sleeves are to be fitted over the soldering points on the unit connector.
e. No HF cable should be included in the cable harnesses. Laying connecting cables together with cables which cary AF power or impulses is also be avoided.
f. Check the wiring carefully before switching on the units, particularly that (UB+) and (GND) have not
been mixed up.
DV 64410.03/.04 Issue 3 Feb/2004
Page 2-1
ACU 5100-(x)-(xxx)
Fig. 2-1 Installation dimensions ACU 5100-(x)-(xxx) (measures in mm)
Page 2-2
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100-(x)-(xxx)
19 pol.
10 pol.
B-BUS
P2
P1
Fig. 2-2 Physical locations of ACU 5100 connectors
Dev.Nr.
M
L
K
N
U
J
V
H
Reset in
C
P
T
Gnd
B
A
R
S
G
H
D
E
F
F
B-BuS
P2
J
E
Dim,
IC hotmike
B
A
K
G
BB1
BB2
Reset out
hardwired
safety related
C
D
Power
P1
Fig. 2-3 Logical pin assignment ACU 5100
DV 64410.03/.04 Issue 3 Feb/2004
Page 2-3
ACU 5100-(x)-(xxx)
2.4.2
Panel illumination
The audio control unit is fitted with panel lighting. It can also be connected via a dimmer system.
Panel illumination connection
Remark
Plug P 1 - Pin E
Dim Control in 1
Plug P 1 - Pin A
Dim Control in 2
2.4.3
P1
Connector pin assignments
Type 851-02 E 12-10 P 50, shell 12, 10-pol., bayonet
Pin
Connection
Remark
C
DC1
+27.5 V
D
GND1
G
DC2
F
GND2
H
PTT
B
Back-up
K
Slaved
J
Hot mike in
E
Dim Control in 1
A
Dim Control in 2
P2
+ 27.5 V
brightness of LED’s
Type 851-02 E 14-19 P 50, shell 14, 19-pol., bayonet
Pin
Connection
L
Dev Nr Bit 0
M
Dev Nr Bit 1
A
Dev Nr Bit 2
B
Dev Nr Bit 3
U
Reset out
V
Reset in
N
GND
C
BB1-HI-in
D
BB1-LO-in
P
BB1-SH-in
Page 2-4
Remark
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100-(x)-(xxx)
Pin
Connection
E
BB1-HI-out
F
BB1-Lo-out
R
BB1-SH-out
G
BB2-HI-in
H
BB2-Hi-out
S
BB2-SH-in
J
BB2-HI-out
K
BB2-LO-out
T
BB2-SH-out
Remark
ACU
DC 1 +28V C
DC 1 GND D
P1
DC 2 +28V G
DC 2 GND F
Fig. 2-4 ACU 5100 power connections
ACU
PTT H
Back Up-Switch Out B
Slave-Switch Out K
Hot Mike In J
All P1
Dim Control In 1 E
Dim Control In 2 A
Fig. 2-5 ACU 5100 connections
DV 64410.03/.04 Issue 3 Feb/2004
Page 2-5
ACU 5100
2.5
Configuration software
The factory configuration of the DVCS 5100 can be changed with aid of a Personal Computer or Laptop and the software CSW 5100 (Article-No. 0543.195-909).
Page 2-6
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
TABLE OF CONTENTS
Section
3
OPERATION
3.1
3.2
3.3
3.3.1
3.3.2
3.3.2.1
3.3.2.2
3.3.2.3
3.3.3
3.3.3.1
3.3.3.2
3.3.3.3
3.3.3.4
3.3.3.5
3.3.4
3.3.4.1
3.3.4.2
3.3.4.3
3.3.5
3.3.6
3.3.7
3.3.8
3.3.9
3.3.10
3.3.11
3.3.11.1
3.3.11.2
3.3.11.3
3.3.11.4
3.3.12
3.3.13
3.3.14
3.3.15
3.3.16
3.3.16.1
3.3.16.2
3.3.17
3.3.17.1
3.3.17.2
3.3.17.3
3.3.17.4
Operating controls
Description and function of the operating controls and indicators
Operating instructions
Preparations (power-up test)
Radio operation
Radio monitoring
Individual volume adjustment
Main volume adjustment
Transmission
Selecting a radio
Forced monitoring
Transmitting
Dual transmission
Dual transmission configuration
Receiver
Reciever monitoring
Individual volume adjustment
Main volume adjustment
Voice / Ident filter
Loudspeaker operation
Intercommunication
Cabin circuit connection
Cabin intercom request
Winchman intercom
Intercom activation
Voice controlled intercom
VOX level adjustment
Intercom using PTT button
Hot Mike intercom
Volume adjustment
Transmit clearance
ACU initialization
Slave operation
Emergency operation
Automatic activation
Back-up switch activated
Test functions
Power-up test (P-Bit)
Continuous test (C-Bit)
Initiated test (I-Bit)
Test result and diagnostic
DV 64410.03/.04 Issue 3 Feb/2004
Page
3-1
3-1
3-4
3-4
3-4
3-4
3-5
3-5
3-6
3-6
3-6
3-7
3-8
3-9
3-9
3-9
3-10
3-10
3-11
3-11
3-12
3-12
3-13
3-13
3-14
3-14
3-14
3-15
3-15
3-15
3-16
3-17
3-17
3-18
3-18
3-18
3-19
3-19
3-19
3-20
3-21
Page 3-I
ACU 5100
Fig. 3-1
Page 3-II
Front panel of the Audio Control Unit with generic button-description
3-1
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
Section
3.1
3
OPERATION
Operating controls
B
C
D
TX1
3
A
4
E
TX2
5
6
2
7
1
PA
IC
D
F
G
H I
J
K L
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
M
N
TX7
PA
P
BACK-UP
PTT
TEST
O
NORM
INIT
Q
IC
VOL
R
SLAVED
RX1
Y
RX2
X
RX3
W
RX4
V
U
RX5
T
RX6
RX7
RX8
S
Fig. 3-1 Front panel of the Audio Control Unit with generic button-inscription
3.2
Description and function of the operating controls and indicators
Item
Control / indicator
Description
Function
A
Transmitter selector
Rotary switch with
Position 1 to 7: Transmitting mode with PTT
switch
10 lock positions
Position D : Dual transmitting mode with PTT
Position PA: Cabin address mode with PTT
Position IC: Intercom mode
B
TX indicators 1 to 7
7 LED’s, yellow
Transmit mode indication for T/R units 1 to 7
LED lights up = Transmit mode
C
TX1 to TX7 buttons
7 push-buttons
On/Off switch for audio monitoring of the T/R units 1 to 7
D
Indicators TX1 to
7 LED’s, green
Monitoring indication for the T/R units 1 to 7:
TX7
LED lights up = Audio monitoring ON
LED goes off = Audio monitoring OFF
LED flashing = Reception volume can be adjusted
DV 64410.03/.04 Issue 3 Feb/2004
Page 3-1
ACU 5100
Item
Control / indicator
Description
Function
E
VOICE button
Push-button
On/Off switch for the IDENT mode
F
VOICE indicator
LED, green
LED lights up = 1020 Hz filter ON
LED goes off = 1020 Hz filter OFF
G
CLR button
Push-button
On/Off switch for enable the cabin ACU’s clearence to
transmit
H
CLR indicator
LED, green
LED lights up = Clearence ON
LED goes off = Clearence OFF
I
ISOL CALL button
Push-button
Initiates an Intercom Request Call from cabin ACU on
both cockpit ACU’s
J
ISOL CALL
LED, green
indicator
K
SPKR button
LED lights up = Intercom request call ON
LED goes off = Intercom request call OFF
Push-button
On/Off switch for audio monitoring via the cockpit speaker
L
SPKR indicator
LED, green
LED lights up = Speaker ON
LED goes off = Speaker OFF
M
PA indicator
LED, yellow
LED lights up = Public address transmit mode
N
PA button
Push-button
On/Off switch for public address activation
O
PA indicator
LED, green
LED lights up = Public address monitoring ON
LED goes off = Public address monitoring OFF
P
VOL control
Rotary knob,
Volume adjustment of audio monitoring and VOX level
continuously rotable adjustment
Q
IC volume control
Rotary knob,
Volume adjustment of intercom
continuously rotable
R
BACK-UP switch
Toggle switch with 3 Position NORM: Normal operation
lock positions
Position SLAVED: Slave operation
Position BACK-UP: Emergency operation
S
INIT indicator
LED, green
LED lights up = Initialization ON
LED goes off = Initialization OFF
Page 3-2
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
Item
Control / indicator
Description
Function
T
INIT button
Push-button
On/Off switch for ACU initialization
U
TEST indicator
LED, green
LED flashing = Continuous Built-In Test
LED lights up = Initiated Test
V
TEST button
Push-buton
Activation of test function
W
PTT switch
Toggle switch with
Press PTT switch = Transmitter is keyed
2 key position
Release PTT switch = Reception
8 LED’s, green
Receive indication for audio monitoring of the receivers
X
RX indicators 1 to 8
RX1 to RX8
LED lights up = Receiver ON
LED goes off = Receiver OFF
Y
RX1 to RX8 buttons
8 push-buttons
On/Off switch for audio monitoring of the connected
receivers
DV 64410.03/.04 Issue 3 Feb/2004
Page 3-3
ACU 5100
3.3
Operating instructions
3.3.1
Preparations (power-up test)
1. Switch on the unit by using the audio selector master switch (circuit breaker).
2. When the Audio Control Unit is powered, the device is tested automatically during initialization
(“P-BIT” , Power-up Built-In Test). All the microprocessors and memories are tested as well as datatransfer between Audio Control Units and Remote Electronic Unit, the indication LEDs on all ACUs.
3. On completion of the test and if the P-BIT has not detected any defects, the green TEST LED lights
up continuously for 5 seconds.
3.3.2
Radio operation
3.3.2.1
Radio monitoring
For radio monitoring, the transceiver is selected by means of the respective monitoring button :
1. Press key briefly → monitoring ON, associated green LED lights up.
2. Press key briefly once more → monitoring OFF, LED goes off.
TX1
TX / RX
4
3
5
6
2
7
1
PA
IC
D
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TX7
PA
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
RX1
RX2
RX3
RX4
RX5
RX6
RX7
RX8
Several transceivers may be selected for monitoring at the same time.
Page 3-4
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
3.3.2.2
Individual volume adjustment
TX1
TX / RX
4
3
5
6
2
7
1
PA
IC
D
TX3
TX4
TX5
VOICE
CLR
ISOL
CALL
TX6
TX7
PA
SPKR
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
RX1
RX2
RX3
RX4
RX5
RX6
RX7
RX8
1. Press monitoring key somewhat longer , either in OFF state or during monitoring → reception volume can be adjusted using the VOL incremental sensor as long as the green LED above the button is
flashing.
2. The LED is flashing after keyhold or VOL sensor action. Flashing can be stopped manually by pressing the monitoring key.
3. The LED stops flashing if any other key is actioned and the corresponding channel remains activated for monitoring.
3.3.2.3
Main volume adjustment
Main volume can be adjusted at any time by turning just the VOL sensor. This action adjusts the sum
volume of all activated channels.
DV 64410.03/.04 Issue 3 Feb/2004
Page 3-5
ACU 5100
3.3.3
Transmission
3.3.3.1
Selecting a radio
TX1
TX / RX
4
3
TX2
5
6
2
7
1
PA
IC
D
TX3
TX4
VOICE
CLR
TX6
ISOL
CALL
TX7
PA
SPKR
BACK-UP
PTT
IC
VOL
NORM
INIT
TEST
SLAVED
RX1
RX2
RX3
RX4
RX5
RX6
RX7
RX8
For transmission via an individual radio, the transceiver is pre-selected by means of the transmitter rotary switch.
- Pre-select transmitter (TX rotary switch)
3.3.3.2
Forced monitoring
1. The reception signal of the radio which is pre-selected for transmission is monitored, even if it was
not active for monitoring before (forced monitoring). To indicate forced monitoring both the green
and the yellow LED will light up.
2. Using the corresponding monitoring key and the VOL sensor, the monitoring volume can be adjusted as described above.
3. The monitoring state returns into the previous state, when turning the TX rotary switch, that means
monitoring ”on” or ”off” respectively.
4. Forced monitoring can be deactivated during installation setup.
Page 3-6
Function
Indication overview
Monitoring selected
green LED lit
TX selected
both green and amber LEDs lit
Transmit
green LED extinguished and amber LED lit
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
3.3.3.3
Transmitting
TX1
TX / RX
4
3
TX2
5
6
2
7
1
PA
IC
D
TX3
TX4
VOICE
CLR
TX6
ISOL
CALL
TX7
PA
SPKR
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
PTT
RX1
RX2
RX3
RX4
RX5
RX6
RX7
RX8
1. Press PTT switch → transmitter will be keyed, the green LED above associated monitoring key
goes off. During transmission, all received signals possibly selected are cut off as well as signals
originating from aircraft intercommunication.
Only those warning tones which have been programmed as essential during installation setup, are
still audible when transmitting. If loudspeakers are provided, and if the one related to the individual
control unit (cockpit or cabin) had been switched on prior to transmitting, it will be muted to avoid
acoustic feedback to the microphone.
2. Speak into microphone → transmitter is modulated, sidetone is audible with the sidetone volume
set-up according to installation setup.
3. Release PTT switch → transceiver turns back to reception, green LED goes on. All previously selected signals, intercom, and warning tones are resumed.
4. If the loudspeaker was activated before pressing PTT, it is switched on again.
If a public address amplifier is connected instead of an eighth transceiver, it is regarded as a transmitter. Its monitoring key is solely used to adjust sidetone volume in conjunction with the VOL sensor.
The TX indications (green LEDs off) assigned to an individual transmitter will be seen on all ACUs
when keyed by any operator.
Any transmitter can be modulated by different operators simultaneously.
DV 64410.03/.04 Issue 3 Feb/2004
Page 3-7
ACU 5100
3.3.3.4
Dual transmission
TX1
TX / RX
4
3
5
6
2
7
1
PA
IC
D
TX3
TX4
VOICE
CLR
TX6
ISOL
CALL
TX7
PA
SPKR
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
RX1
RX2
RX3
RX4
RX5
RX6
RX7
RX8
1. In position D (dual transmission) of the TX rotary switch, an operator can pre-select to key and modulate two radios at the same time.
2. Forced monitoring covers then both transceivers.
3. The choice of the two radios for dual TX is permitted during installation setup of the Audio Control
Unit but can be altered by the user as described below.
TX1
TX / RX
3
4
5
6
2
7
1
PA
IC
D
TX3
TX4
VOICE
CLR
TX6
ISOL
CALL
TX7
PA
SPKR
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
PTT
RX1
RX2
RX3
RX4
RX5
RX6
RX7
RX8
4. Transmission is indicated by switching off the two corresponding green LED’s as long as the PTT
switch is held.
5. Dual transmission feature can be disabled in installation setup.
Page 3-8
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
3.3.3.5
Dual transmission configuration
TX1
3
4
5
VOICE
6
2
7
1
PA
IC
D
TX5
TX6
ISOL
CALL
SPKR
TX2
CLR
TX7
PA
BACK-UP
PTT
IC
VOL
NORM
TEST
SLAVED
RX1
RX2
RX3
RX4
RX6
RX5
RX7
RX8
The two radios used for double transmission can be pre-selected by the user by pressing the INIT button when the rotating switch is in D position and then selecting the two radios by pressing the corresponding buttons while the INIT LED is flashing.
3.3.4
Receiver
3.3.4.1
Receiver monitoring
TX1
3
RX
4
TX2
5
6
2
7
1
PA
IC
D
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TX7
PA
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
RX1
RX2
RX4
RX5
RX6
RX7
RX8
For navigation receiver monitoring, the receiver is selected by means of the respective monitoring button :
1. Press key briefly → monitoring ON , associated green LED lights up.
2. Press key briefly once more → monitoring OFF , LED goes off.
Several receivers may be selected for monitoring at the same time.
DV 64410.03/.04 Issue 3 Feb/2004
Page 3-9
ACU 5100
3.3.4.2
Individual volume adjustment
TX1
4
3
RX
TX2
5
6
2
7
1
PA
IC
D
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TEST
INIT
TX7
PA
BACK-UP
PTT
IC
VOL
NORM
SLAVED
RX1
RX2
RX4
RX5
RX6
RX7
RX8
1. Press monitoring key somewhat longer, either in OFF state or during monitoring → reception volume can be adjusted using the VOL incremental sensor as long as the green LED above the button is
flashing.
2. The LED is flashing after keyhold or VOL sensor action. Flashing can be stopped manually by pressing the monitoring key.
3. The LED stops flashing if any other key is actioned, and the corresponding channel remains activated for monitoring.
3.3.4.3
Main volume adjustment
Main volume can be adjusted at any time by turning just the VOL sensor. This action adjusts the sum
volume of all channels.
Page 3-10
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
3.3.5
Voice / Ident filter
TX1
TX2
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
PA
TX7
RX
4
3
5
6
2
7
1
PA
IC
D
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
voice/ident filter
FILTER
RX1
RX3
RX4
RX7
RX6
RX8
only for as NAV audio
configured inputs
1. The Navigation receiver inputs (RX1...RX8 ) have a switchable ident frequency cut-off Filter.
2. Pressing the VOICE button, the Morse-coded station identification message (1020 Hz) is filtered
out so that e.g. meteorological information may be listened to undisturbed. The green LED above
the button indicates Voice/Ident Mode.
3. On pressing the key once again, the unit reverts to Ident mode and the LED goes off.
3.3.6
Loudspeaker operation
TX1
RX
3
4
5
6
2
7
1
PA
IC
D
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TX7
PA
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
PTT
IC
RX1
RX3
RX4
RX6
RX7
RX8
1. Pressing the SPKR button briefly switches on the loudspeaker that is related to the control unit. All
selected receiver signals, incoming intercom audio, and warnings are reproduced through the loudspeaker. The green LED above the button indicates Speaker Mode.
2. Upon pressing the key once again, the speaker is switched off and the LED goes off.
3. When speaker mode is active with an individual ACU , voice controlled intercommunication (VOX)
is disabled.
4. Intercom is still possible by activating the external IC button or by pressing the PTT button while the
TX selector rotary switch is in Pos. IC. In both cases, the loudspeaker is muted to avoid feedback.
DV 64410.03/.04 Issue 3 Feb/2004
Page 3-11
ACU 5100
3.3.7
Intercommunication
to ground
staff intercom
Copilot ACU
VHF1
4
3
VHF2
5
6
2
7
1
PA
IC
D
Pilot ACU
TC1
TC2
TC3
VOICE
CLR
ISOL
CALL
SPKR
TEST
IC
VOL
NORM
INIT
4
3
BACK-UP
PTT
VHF1
PA
VHF2
5
6
2
7
1
PA
IC
D
TC1
TC2
TC3
VOICE
CLR
ISOL
CALL
V/L2
MKR1
MKR2
ADF
DME1
SPKR
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
SLAVED
V/L1
PA
DME2
V/L1
DF
ISOL
CALL
V/L2
MKR1
MKR2
ADF
DME1
DME2
DF
ISOL
CALL
Passenger disconnection
(external switch)
to passenger,
intercom only
Cabin ACU
VHF1
4
3
VHF2
5
6
2
7
1
PA
IC
D
TC1
TC2
TC3
VOICE
CLR
ISOL
CALL
PA
SPKR
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
V/L1
V/L2
MKR1
MKR2
ADF
DME1
DME2
DF
There are two virtual intercom circuits which are separated after initialisation :
1. Pilot <-> Copilot (Cockpit circuit)
2. Cabin <-> Passenger IC (Cabin circuit), Passenger can be disconnected via external switch.
The intercom circuit between Pilot and Copilot can not be interrupted.
In Back-up mode intercom between pilot and copilot is still possible if the Back-up power supply is provided.
3.3.8
Cabin circuit connection
1. Pressing the ISOL/CALL button on one of the cockpits ACU’s, connects the cockpit and cabin intercom circuits.
2. The corresponding green LED is switched off, to indicate that the Cabin is not isolated anymore.
3. Pressing again disconnects the circuits, the LED goes on again.
4. ISOL/CALL buttons on pilot’s and copilot’s control unit have the same functionality and priority.
5. The ISOL/CALL LED on flightdeck ACU’s and the ISOL/CALL LED on the Cabin ACU indicate the
state of the intercom connection.
Page 3-12
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
3.3.9
Cabin intercom request
Cabin
ACU
Flightdeck
ACU
TX1
4
3
TX2
5
6
7
2
1
D
PA
IC
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TX7
PA
3
TEST
INIT
RX4
RX5
4
TX2
5
IC
VOL
NORM
6
7
2
BACK-UP
PTT
TX1
1
PA
IC
D
TX3
TX4
TX5
VOICE
CLR
ISOL
CALL
RX2
RX3
RX6
TX7
PA
SPKR
BACK-UP
PTT
TEST
INIT
RX4
RX5
SLAVED
RX1
TX6
IC
VOL
NORM
SLAVED
RX7
RX8
RX1
RX2
RX3
RX6
RX7
RX8
1. Pressing the ISOL/CALL button on the cabin ACU initiates an Intercom Request Call on both cockpit control units if the IC circuits were previously separated.
2. Both ACU’s ISOL/CALL LEDs flash and a single chime is generated Via configuration software. The
single chime is setable for enable or disable.
3. Either of the pilots may press their ISOL/CALL button to accept the call and at the same time establish IC connection between cockpit and cabin.
4. Once the circuits are connected, the cabin ACU’s ISOL/CALL button has no function.
3.3.10
Winchman intercom
The headset of the winchman is parallel connected to the copilots headset. Intercom is possible between Pilot or Copilot/Winchman in normal-, slave- and backup mode.
The Vox level and Volume level are adjustable via discrete input lines (Vox-level, Volume adjust). Two
external push-buttons are required.
Function description Vox-level :
If the Vox-level push-button is pressed a short time, the Vox-level is increased to a max. value by steps.
If the Vox-level push-button is pressed for a longer time (>3s), the Vox-level will be reset to the value
set before.
Function description Volume-level :
If the Volume-level push-button is pressed a short time, the Volume-level increases to a max. value by
steps. If the Volume-level push-button is pressed for a longer time (>3s), the Volume-level will be reset
to the value set before.
DV 64410.03/.04 Issue 3 Feb/2004
Page 3-13
ACU 5100
3.3.11
Intercom activation
Intercommunication between the different users can be activated in three ways :
1
b
.
TX1
2
IC
4
3
PTT
5
6
2
7
1
PA
IC
D
3
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TX2
TX7
PA
BACK-UP
PTT
IC
VOL
NORM
INIT
TEST
SLAVED
IC
RX1
RX2
RX3
RX5
RX4
RX6
RX7
RX8
3.3.11.1 Voice controlled intercom
In positions 1 through 7, PA and D of the TX selector switch, voice controlled intercommunication
(VOX) is established without the need for any further action – provided no transmitter is keyed. Should,
however, the loudspeaker be active with an ACU, no VOX intercom is possible due to acoustic feedback reasons.
3.3.11.2 VOX level adjustment
The VOX level of the microphones associated with each ACU can be adjusted independently for each
ACU in following way:
TX1
4
3
TX2
5
6
2
7
1
PA
IC
D
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TX7
PA
BACK-UP
PTT
IC
VOL
NORM
TEST
SLAVED
RX1
RX2
RX3
RX4
RX5
RX6
RX7
RX8
1. Press INIT key briefly, the LED is flashing
2. Turn VOL volume sensor to adjust the VOX level within the allowed range (VOX_range).
3. The LED is flashing for tflash-duration-for -vox after INIT key pressed briefly, or VOL sensor action
4. The LED stops flashing if any other key is actioned.
Page 3-14
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
3.3.11.3 Intercom using PTT button
Setting the TX selector to position IC, enables intercom by using the PTT button, i.e. mike signal is only
forwarded to the IC amplifier when the switch is pressed.
3.3.11.4 Hot Mike intercom
If a dedicated IC button/switch is externally connected (separately for each control unit), the mike signal can be fed permanently to the system (Hot Mike mode).
3.3.12
Volume adjustment
Turning the IC VOL incremental sensor, intercommunication volume can readily be adjusted from 0 to
– 40 dB, independent of the main (receiver) volume.
Transmission always takes priority over intercommunication. If an operator has set his ACU TX selec-
VHF1
4
3
VHF2
5
6
2
7
1
PA
IC
D
TC1
TC2
TC3
VOICE
CLR
ISOL
CALL
PA
SPKR
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
V/L1
V/L2
MKR1
MKR2
ADF
DME1
DME2
DF
tor to 1 through 7, PA or D and presses the PTT switch, his ACU stops its VOX or HOT MIKE mode and
turns to transmit mode.
The other control units are not affected and their operators may continue intercommunication.
DV 64410.03/.04 Issue 3 Feb/2004
Page 3-15
ACU 5100
3.3.13
Transmit clearence
VHF 1
VHF 2
UHF
FM
...
NAV 1
NAV 2
MKR
ADF
DME
...
ü
TX1
ü
ü
4
3
ü
ü
ü
TX2
5
TX4
VOICE
6
2
7
1
PA
IC
D
TX3
TX5
TX6
ISOL
CALL
SPKR
TX7
PA
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
RX1
RX2
RX3
RX4
RX5
RX6
RX7
RX8
1. On the cabin ACU the radios and receivers can be selected for monitoring as described in sections
3.3.2.1 and 3.3.4.1 respectively.
2. Nevertheless, monitoring of certain receivers and radios can be inhibited during IS (Installation
Setup). See also example above on the left.
3. Pressing the CLR button on one of the pilots’ ACUs enables the cabin ACU(s) to transmit on radios
which have been allowed during installation setup (see example above on the left).
4. Clearance to transmit is indicated by the CLR LED on all ACU’s. Pressing the CLR button again
cancels the clearance and the LED goes off.
5. The CLR button on the Cabin ACU has no function but is used to indicate, with the associated LED,
the state of the clearance.
6. During SLAVED mode, the CLR key of the slaved unit is not functional.
Page 3-16
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
3.3.14
ACU Initialization
After every power-on the previously used user setup (US) is restored.
Nevertheless, and to get a predefined configuration, the ACU can be initialised to the values which
have been set during installation setup (IS).
TX1
4
3
TX2
5
6
2
7
1
PA
IC
D
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
PA
TX7
BACK-UP
PTT
IC
VOL
NORM
TEST
SLAVED
RX1
RX2
RX3
RX4
RX6
RX5
RX7
RX8
To initialise the ACU press the INIT key for longer than 5 seconds.
The associated LED is lighted for ton-duration-for-init to indicate that this ACU is reset to the init values
which have been set during installation setup.
3.3.15
Slave operation
Copilot
TX1
3
4
TX2
5
6
7
2
1
D
PA
IC
Pilot
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TX7
PA
3
TEST
INIT
RX4
RX5
4
5
IC
VOL
NORM
6
7
2
BACK-UP
PTT
TX1
1
D
PA
IC
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TEST
INIT
RX2
RX3
RX6
RX4
RX5
PA
BACK-UP
PTT
IC
VOL
NORM
SLAVED
SLAVED
RX1
TX7
RX7
RX8
RX1
RX2
RX3
RX6
RX7
RX8
When switching the emergency toggle switch to position SLAVED on one of the cockpits control units,
the according headset is disconnected from its audio processing circuits in the remote electronic unit
and its mike and phone capsules are directly paralleled to the headset of the remaining ACU.
No further action is possible on the slaved Audio Control Unit.
SLAVED mode is a first step of security in the case where one of the control panels appears to be defective or not working.
Note :
Only one user may switch to the ”Slaved” position. If 2 user do that, the system remains in ”Normal”
mode.
DV 64410.03/.04 Issue 3 Feb/2004
Page 3-17
ACU 5100
3.3.16
Emergency operation
3.3.16.1 Automatic activation
When the two main power supply busses fail or if a fatal defect occurs within the unit’s internal supply,
the security logic falls back to Back-up operation even if the BACK-UP switch had not been activated.
The microphone and headphone amplifier is powered via an external emergency battery supply.
All actions take place as described below.
3.3.16.2 Back-up switch activated
TX1
3
4
TX2
5
6
2
7
1
PA
IC
D
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TX7
PA
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
RX1
RX2
RX3
RX4
RX5
RX6
RX7
RX8
Switching over the Emergency toggle switch (after unlocking by pulling its lever in position Back-up) on
one of the cockpits ACU will activate a security circuit to assign radio transceivers, receivers and fixed
inputs to the individual operator.
The signals are distributed as follows :
ACU 1 - TX1 & RX2 & FIX1,
ACU 2 - TX2 & RX1 & FIX2.
During Back-up operation, no actions are possible on the ACUs, any adjustments (e.g. reception volume) must be input directly at the respective radio transceivers or navigation receivers.
Intercom capability between pilot and copilot/winchman is given as long as the external emergency
battery power supply is available. (audio level is fix at 50%, no adjustment possible)
Page 3-18
DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
3.3.17
Test functions
3.3.17.1 Power-up test (P-BIT)
TX1
4
3
TX2
5
6
2
7
1
PA
IC
D
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TX7
PA
BACK-UP
PTT
IC
VOL
NORM
INIT
TEST
SLAVED
RX1
RX2
RX3
RX4
RX5
RX6
RX7
RX8
Every time the system is powered, the devices are tested automatically (P-BIT , Power-up Built-In
Test).
While the test is running, the green Test-LED is lit. If the test result is ”GO”, the green Test-LED goes off.
If the test result is ”NOGO”, the green Test-LED flashes. The system is then operational.
3.3.17.2 Continuous test (C-BIT)
TX1
4
3
TX2
5
6
2
7
1
PA
IC
D
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TX7
PA
BACK-UP
PTT
TEST
IC
VOL
NORM
INIT
SLAVED
RX1
RX2
RX3
RX4
RX5
RX6
RX7
RX8
During normal operation of the Unit, the system circuits are tested continuously in the back-ground
(“C-BIT” , Continuous Built-In Test).
If an error is detected, the TEST LED commences flashing with a rate of 2 Hz. It can be reset by pressing the TEST button, if no total error.
In case there is a notable degradation in Unit performance, the operators should turn to emergency
operation; either SLAVED or BACK-UP.
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ACU 5100
3.3.17.3 Initiated test (I-BIT)
A manual test sequence (“I-BIT” , Initiated Built-In Test) may be activated at any time by pressing the
TEST button, except during transmit operation :
Activating the test :
TX1
4
3
TX2
5
6
2
7
1
PA
IC
D
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TX7
PA
BACK-UP
PTT
IC
VOL
NORM
INIT
SLAVED
RX1
RX2
RX3
RX4
RX5
RX6
RX7
RX8
Press the TEST button → TEST LED lights up, reception or IC mode resp. is interrupted.
Manual Test performance during test is running :
TX1
4
3
5
6
2
7
1
PA
IC
D
TX3
TX4
TX5
TX6
VOICE
CLR
ISOL
CALL
SPKR
TX7
PA
BACK-UP
PTT
IC
VOL
NORM
INIT
SLAVED
RX1
RX2
RX4
RX5
RX6
RX7
RX8
Every action on the receiver or function keys, except the test button, makes the associated Green-LED
light up and the TIMEOUT – Counter will be restarted.
Otherwise the test is stopped automatically after a timeout (tIBIT-timeout = 5 sec.), if no button is pressed.
During SLAVED mode, the TEST key of the slaved unit is not functional.
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DV 64410.03/.04 Issue 3 Feb/2004
ACU 5100
1
3.3.17.4
Test result and Diagnostic
If the test is ready and the test result is :
GO
Test LED goes off. The system starts to work as before the test was activated.
NOGO
The Test LED flashes. A short press of the Test key resets the NOGO indication,
the test LED goes off. The system starts to work, set as before the test
was activated.
By presssing the test button >2 s, a error code on the TX/RX LED’s will be displayed.
The RX LED-Line shows the failure code of the affected LRU.
The TX LED-Line shows the failure code of the affected LRU-Function.
Error-Code Table
LED
ERROR
LED
LRU
TX1
No Answer
RX1
ACU 1
TX2
DSP
RX2
ACU 2
TX3
Not defined
RX3
ACU 3
TX4
Power Voltage
RX4
ACU 4
TX5
NOVRAM
RX5
ACU 5
TX6
ROM
RX6
ACU 6
TX7
RAM
RX7
Not defined
TX8
BUS
RX8
REU
Pressing the test button once more resets the displayed LED’s and the system works as
before test was activated, or the failure code of the second affected LRU will be displayed.
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ACU 5100
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DV 64410.03/.04 Issue 3 Feb/2004
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