Thales Communications EVR718 EVR 716 VHF data radio User Manual OPERATION AND INSTALLATION MANUAL

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Document Description	OPERATION AND INSTALLATION MANUAL
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Date Submitted	2000-05-09 00:00:00
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Document Title	OPERATION AND INSTALLATION MANUAL

OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
LISTE DES RENVOIS
ATA
23-11-02
Fabricant
P/N
Date d'édition originale: 2000/02/15
Date d'édition révision 2000/02/15
KVJEVR718
F0057
OPERATION AND INSTALLATION MANUAL
Enhanced VHF Radio
VHF Communications Transceiver
PN :
FIRST ISSUE: 2000/02/15
Ref/Doc : 36710392-AA
REVISION No.:
EVR716-11-0300A
EVR716-11-0350A
23-11-02
TP Page 1/2
2000/02/15
OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
SERVICE INFORMATION LETTER LIST
SERVICE
INFORMATION
LETTER
No
INCLUDED
IN
REVISION
DATE
OF
INCORPORATION
Not applicable for P/Ns :
EVR716-11-0300A and EVR71611-0350A.
First Issue
2000/02/15
To upgrade the current
Transmitter (TX), Receiver (RX),
and HIRF boards to industrial
level a re-layout of the printed
circuit.
23-11-02
TITLE
SILL Page 1/2
2000/02/15
OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
LIST OF EFFECTIVE PAGES
SUBJECT
PAGE
DATE
Title Page
2000/02/15
Blank
Record of
Revisions
2000/02/15
Blank
Record of
Temporary
Revisions
2000/02/15
Blank
Service
Bulletin List
2000/02/15
Blank
Service
Information
Letter List
2000/02/15
Blank
List of
Effective
Pages
2000/02/15
Blank
Table of
Contents
2000/02/15
Blank
List of
Illustrations
2000/02/15
Blank
Introduction
2000/02/15
2000/02/15
2000/02/15
Blank
SUBJECT
PAGE
DATE
System
Description
10-1
10-2
10-3
10-4
10-5
10-6
2000/02/15
2000/02/15
2000/02/15
2000/02/15
2000/02/15
2000/02/15
External
Interfaces
20-1
20-2
20-3
20-4
20-5
20-6
20-7
20-8
2000/02/15
2000/02/15
2000/02/15
2000/02/15
2000/02/15
2000/02/15
2000/02/15
Blank
Installation
30-1
30-2
2000/02/15
Blank
Operating
Instructions
40-1
40-2
40-3
40-4
2000/02/15
2000/02/15
2000/02/15
Blank
R : Revised (to be replaced)
D : Deleted (to be removed)
N : New (to be incorporated)
23-11-02
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
RECORD OF REVISIONS
REV.
ISSUE
No.
DATE
INSERTED
DATE
REV.
ISSUE
No.
DATE
INSERTED
DATE
BY
BY
23-11-02
RR Page 1/2
2000/02/15
OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
RECORD OF TEMPORARY REVISIONS
TEMPORARY
REV Nr
PAGE NUMBER
ISSUE DATE
BY
23-11-02
DATE
REMOVED
BY
RTR Page 1/2
2000/02/15
OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
SERVICE BULLETIN LIST
SERVICE
BULLETIN
NUMBER
INCLUDED
IN
REVISION
DATE
OF
INCORPORATION
23-11-02
TITLE
SBL Page 1/2
2000/02/15
OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
TABLE OF CONTENTS
SUBJECT
PAGE
INTRODUCTION ........................................................................................................................ INTRO-1
1. General.................................................................................................................................INTRO-1
2. Uncommon Abbreviations /Acronyms..................................................................................INTRO-2
SYSTEM DESCRIPTION ...................................................................................................................10-1
1. Function and Composition.......................................................................................................... 10-1
2. Mechanical Characteristics (see figures 10-3 and 10-4)............................................................ 10-4
3. Electrical Characteristics............................................................................................................. 10-4
EXTERNAL INTERFACES.................................................................................................................20-1
1. Interwiring.................................................................................................................................... 20-1
2. Electrical Power Supply ......................................................................................................20-7/20-8
3. ARINC 429 Links.................................................................................................................20-7/20-8
INSTALLATION ......................................................................................................................... 30-1/30-2
1. Environment ........................................................................................................................30-1/30-2
2. First Installation Check Out.................................................................................................30-1/30-2
3. Mechanical Installation........................................................................................................30-1/30-2
4. Interwiring............................................................................................................................30-1/30-2
OPERATING INSTRUCTION.............................................................................................................40-1
1. Energization of the Equipment.................................................................................................... 40-1
2. Normal Operating Modes............................................................................................................ 40-1
3. Default Operating Instructions ............................................................................................40-3/40-4
23-11-02
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
LIST OF ILLUSTRATIONS
FIGURE
PAGE
10-1
- GENERAL VIEW ........................................................................................................10-2
10-2
- INTERFACE BLOCK DIAGRAM ...............................................................................10-2
10-3
- MECHANICAL CHARACTERISTICS ........................................................................10-5
10-4
- MECHANICAL CHARACTERISTICS ........................................................................10-6
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
INTRODUCTION
1.
General
This Operation and Installation Manual includes information related to the operation and
installation of the THOMSON-CSF COMMUNICATIONS EVR716 Enhanced VHF Radio
Communications Transceiver.
The Operation and Installation instructions are presented in the following sections:
Introduction.
10 - System Description.
20 - External Interfaces.
30 - Installation.
40 - Operating Instruction.
CAUTION: THE EQUIPMENT IN THIS MANUAL IS SUBJECT TO CHANGE. BEFORE
ATTEMPTING ANY OPERATION ON THE EQUIPMENT COVERED IN THIS
MANUAL, VERIFY THAT YOU HAVE COMPLETE AND UP-TO-DATE
PUBLICATIONS BY REFERRING TO THE APPLICABLE PUBLICATIONS,
SERVICE BULLETIN, SERVICE BULLETIN LIST, SERVICE INFORMATION
LETTER INDEXES.
Refer to the Table of Contents for the page location of applicable sections.
An asterisk flagnote *[ ] in place of the page number indicates that no special instructions are
provided since the function can be performed using standard industry practices.
A list of uncommon/acronyms abbreviations used in this manual is described in paragraph 2 of
the INTRODUCTION SECTION. This manual will be revised as necessary to reflect current
information.
We welcome your comments concerning this manual. Although every effort has been made to
keep it free of errors, some may occurs. When reporting a specific problem, please describe it
briefly and include the manual part number, the paragraph or figure number, and the page
number.
Send your comments to:
SEXTANT
Aérodrome de Villacoublay
B.P.59
78 141 VELIZY-VILLACOUBLAY CEDEX
23-11-02
Introduction Page 1
2000/02/15
OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
2.
Uncommon Abbreviations /Acronyms
ABBREVIATIONS/
ACRONYMS
IDENTIFICATION
ACARS
Aircraft Communication Addressing and Reporting System
AMU
Audio Management Unit
ATC
Air Traffic Control
BIT
Built In Test
CFDS
Centralized Fault Display System
CMU
Communications Management Unit
CSMA
Carrier Sense Multiple Access
DFS
Data Frequency System
FM
Frequency Modulation
Hz
Hertz
LED
Light Emitting Diode
LF
Low Frequency
LO
Local Oscillator
LRU
Line Replaceable Unit
MHz
Megahertz
MU
Management Unit
OMS
On-board Maintenance System
P/N
Part Number
Rx
Receiver
SDI
Source Destination Identifier
SELCAL
SELective CALling
SRU
Shop Replaceable Unit
T/R
Transmitter/Receiver
Tx
Transmitter
(Continued)
23-11-02
Introduction Page 2
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
ABBREVIATIONS/
ACRONYMS
IDENTIFICATION
UHF
Ultra High Frequency
VAC
Voltage Alternative Current
VDC
Voltage Direct Current
VHF
Very High Frequency
VHFCP
VHF Control Panel
EVR
Enhanced VHF Radio
23-11-02
Introduction Page 3/4
2000/02/15
OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
SYSTEM DESCRIPTION
1.
Function and Composition
The Radio communication airborne system (see figure 10-1), known as the EVR716, is a VHF
transceiver operating in the aeronautical band (118 MHz to 137 MHz), used by Air Transport
Aircraft as a primary equipment for communications with the ground ATC infrastructure (in
continental areas) or for communications between aircrafts (relay, emergency).
The EVR716 transceiver includes:
−
On the rear panel:
• an ARINC 600 connector, size 1.
−
On the front panel:
• two attaching lugs,
• a handle,
• a test pushbutton,
• six display LEDs.
The EVR716 transceiver is identified by labels stuck on its front panel.
The first label mentions:
−
the equipment name,
−
the TSO,
−
the Quality Control,
−
the serial number (S/N),
−
the factory clearance date.
The second label mentions the service bulletin numbers applied.
The third label mentions the commercial reference.
The fourth label mentions the QAC.
Aboard the aircraft (see figure 10-2), the EVR716 transceiver operates with the items of
equipment below:
−
a Data Frequency System (DFS) which can be an RCU (Radio Control Unit or control unit)
or an RMP (Radio Management Panel) to agree with the aircraft configuration,
23-11-02
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
ARINC 600 connector
Rear panel
Test pushbutton
Display LEDs
Handle
Attaching lug
Interface
General
blockview
diagram
Figure 10-2
10-1
23-11-02
A0Z-MAA1
Page 10-2
2000/02/15
OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
VHF
Control
Panel
(VHFCP)
Freq in
Squelch Disable
ARINC
2x 429 LS
Automatic
Test
Equipment
(ATE)
OMS/CFDS
ARINC
429 LS
Serial
Line
POWER SUPPLY
Discrets
+27.5 VDC
Ground
SDI Code
Antenna RF in
Audio
Mike in
Mike in PTT
Audio out
Audio
Selector
Panel
(ASP)
Ground/Air
Audio
Discret
EVR 716
Discret
Analog
Self Test
Others
Max Trans Cut off
Voice/Data Select
Reserved for AGC
Key Event
CMU
Data
In/Out
CMU/MU
Communications
Management
Unit
ARINC
429 HS
ARINC
429 HS
Discret
Aiborne or
Portable
Data Loader
Data Loader Data
Enable
In/Out
DiscretAudio
Audio
ACARS
SELCAL
or Data
Output
Data
Data Link,
Keyline Data Input
23-11-02
A0Z-SA-A
Page 10-3
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
2.
−
an ACARS MU (Management Unit, ARINC 724 or 724A) or a CMU (Communications
Management Unit, ARINC 758),
−
an Audio Management Unit (AMU), audio control panel (microphone, loudspeakers),
−
a maintenance computer : OMS (ARINC 624) or CFDS (ARINC 604),
−
a VHF antenna.
Mechanical Characteristics (see figures 10-3 and 10-4)
DESIGNATION
T/R Unit EVR716
3.
DIMENSIONS (mm)
3 MCU to ARINC 600
ie 200 x 94 x 387.5
WEIGHT (kg)
4.450 ± 0.050
Electrical Characteristics
−
Frequency range
117.975 MHz to 137 MHz
−
Transmitted power
16 W
−
Power Supply
28 VDC
−
Modes of operation:
• Mode OA
Analogue voice transmission, 25 kHz channel spacing
• Mode OB
Analogue voice transmission, 8.33 kHz channel spacing
• Mode 1A
Data, 25 kHz channel spacing,
AM-MSK modulation (2.4 kb/s),
external modem, CSMA access,
ACARS protocol.
23-11-02
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
NOTE: All dimensions are in mm.
A0Z-MAA2
Mechanical characteristics
Figure 10-3
23-11-02
Page 10-5
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
BOTTOM VIEW
INTLET AREA
63,5
13
57,3
O3
RIGHT VIEW
30
0,5
3,6
92 +- 5
194-0,1
CENTRE OF GRAVITY
160 +- 5
318 +- 5
53,5
319,5
323
13
O3
NOTE : All dimensions are in mm.
OUTLET AREA
52
TOP VIEW
A0Z-MAA2
NOTE: All dimensions are in mm.
Mechanical characteristics
Figure 10-4
23-11-02
Page 10-6
2000/02/15
OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
EXTERNAL INTERFACES
1.
Interwiring
The inputs/outputs go through the ARINC 600 rear connector and the front panel.
The ARINC 600 rear connector has the three parts below:
−
the 60-way Top Part (TP) with the contacts used for the ATE (TP5A to TP7D),
−
the 60-way Middle Part (MP) with all the transceiver inputs (discrete, ARINC bus),
−
the Bottom Part (BP) with the power supply contacts and the antenna coaxial connector
(five contacts).
The detailed characteristics of inputs/outputs are given in the followings tables.
TOP PART OF THE CONNECTOR
Pin number
Signal name
TP1A
Manufacturer
Identifier
TP1B
Manufacturer
Identifier
TP1C
Part number or
type number
TP1D
Part number or
type number
Type
I/O
Pin
programming
To/From
TP2A
TP2B
TP2C
TP2D
TP3A - TP3B - TP3C - TP3D
TP4A - TP4B - TP4C - TP4D
TP5A
COMMON
Not used
SELECT
Mode ATE
(Continued)
23-11-02
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
TOP PART OF THE CONNECTOR (continued)
Pin number
Signal name
Type
I/O
To/From
Serial bus
Management
Module
Serial bus
TP5B
RS232
Transmission
TP5C
DC Ground
TP5D
RS232 Reception
TP6A
LED 1
Discrete
Management
Module
TP6B
LED 2
Discrete
Management
Module
TP6C
LED 3
Discrete
Management
Module
TP6D
LED 4
Discrete
Management
Module
TP7A
LED 5
Discrete
Management
Module
TP7B
Reserved for
AGC
TP7C
Future Spare
TP7D
Flash Write
enable
Pin programming
TP8C - TP8D - TP9C - TP9D
Future Spare
TP10D - TP11A - TP11B - TP11C
TP11D - TP12A - TP12B - TP12C
TP12D - TP13A - TP13B - TP13C
TP13D - TP14A - TP14B - TP14C
TP14D - TP15A - TP15B - TP15C
TP15D
TP8A
P5VT
TP8B
P15VT
TP9A
Reserved
23-11-02
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
TOP PART OF THE CONNECTOR (continued)
Pin number
Signal name
Type
I/O
TP9B
Reserved
TP10A
BLOSQLT
Discrete
TP10B
CANOCT
Discrete
TP10C
COMP
To/From
MIDDLE PART OF THE CONNECTOR
Pin number
Signal name
Type
I/O
MP1A
Hi Mike Input
MP1B
Lo Mike Input
MP1C
PTT Mike Input
Discrete
MP1D
Key Event
Discrete
MP2A
Max TRANS
Cut-off
Discrete
MP2B
Mike Input
MP2C
MP2D
Data loader
Input
ARINC
429 High
Speed
MP3A
MP3B
MP3C
Optional
(Remote
Squelch)
MP3D
DC Ground
MP4A
Self Test
MP4B
Audio Ground
To/From
Management Module
Discrete
(Continued)
23-11-02
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
MIDDLE PART OF THE CONNECTOR (continued)
Pin number
Signal name
MP4C
MP4D
Data Loader
Output
MP5A
Data Link Input
HI
Data Link Input
LO
MP5B
Type
I/O
To/From
ARINC
429 High
Speed
Management Module
MP5C
Reserved for
716 compatibility
MP5D
8.33 kHz
program for 716
compatibility
Discrete
Grounded
for T/R
with
8.33 KHz
MP6A
MP6B
Data from
OMS/CFDS #1
Input Port A
ARINC
429 Low
Speed
MP6C
MP6D
Data from
OMS/CFDS #2
Input Port B
ARINC
429 Low
Speed
MP7A
MP7B
Data from
ARDU Port B
ARINC
429 Low
Speed
MP7C
Voice/Data
Select
Discrete
MP7D
Data Key Line
Discrete
MP8A
Reserved
Discrete
MP8B
Data Loader
Enable
Discrete
MP8C
Reserved
MP8D
Data Key Line
Return
Ground
MP9A
SDI Code Input
Discrete
23-11-02
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
MIDDLE PART OF THE CONNECTOR (continued)
Pin number
Signal name
Type
I/O
Discrete
MP9B
SDI Code Input
MP9C
Ground
MP9D
Reserved for
AGC
MP10A
Reserved
MP10B
Interlocking
Control input
MP10C
MP10D
Data to both
CMUs
Output Port
ARINC
429 High
Speed
MP11A
MP11B
Data from
ARCDU Port A
ARINC
429 Low
Speed
MP11C
Reserved
MP11D
Data Select
Discrete
MP12A
MP12B
To/From
Management Module
Discrete
Data from CMU
#1 Input Port A
ARINC 429
High Speed
MP12C
MP12D
Data from CMU
#2 Input Port B
ARINC 429
High Speed
MP13A
MP13B
SELCAL Audio
and Data Output
MP13C
Squelch Disable
MP13D
Squelch Disable
return
MP14A
Reserved
MP14B
Ground/Air
Discrete
Receiver Module
Discrete
(Continued)
23-11-02
Page 20-5
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
MIDDLE PART OF THE CONNECTOR (continued)
Pin number
Signal name
Type
I/O
To/From
ARINC 429 Low
Speed
Management
Module
Receiver
Module
Management
Module
MP14C
MP14D
CDS/ARCDU
/SCP
MP15A
MP15B
Audio/Sidetone
output
MP15C
Muting
Discrete
MP15D
Muting Return
(Ground)
Ground
BOTTOM PART OF THE CONNECTOR
Pin number
Signal name
Type
I/O
To/From
Antenna /
Receiver
Module
BP1
Antenna RF
I/O
BP2
Power input
+ 27.5 VDC
BP3
Spare
BP4
Power Input
Ground
BP5
Not used
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
The links with the aircraft environment are distributed as follows:
2.
−
Antenna Input/Output via a coaxial insert located in the lower part of the rear connector.
−
Power supply inputs.
−
Discrete Inputs/Outputs.
−
Serial ARINC 429 link (four low speed inputs and one output, three high speed inputs and
two outputs).
Electrical Power Supply
The EVR716 transceiver is directly connected to the aircraft 28 VDC primary power supply via
the aircraft switchboard.
3.
ARINC 429 Links
The EVR716 transceiver has four links by ARINC 429 bus:
−
a link with the frequency selection equipment, two low speed inputs (MP7A/B, MP11A/B),
−
a link with ARINC 615-1 software downloading system, one high speed input and one high
speed output (MP2C/D, MP4C/D),
−
a link with the OMS/CFDS on-board maintenance systems, two low speed inputs and one
low speed output (MP6A/B, MP6C/D, MP14C/D),
−
a link with the (C)MUs, two high speed inputs and one high speed output (MP12A/B,
MP12C/D, MP10C/D).
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
INSTALLATION
1.
Environment
The EVR716 transceiver is provided for the following environmental conditions:
2.
−
Operating temperature
- 40°C to + 70°C (- 40°F to + 158°F)
−
Storage temperature
- 55°C to + 85°C (- 67°F to + 185°F)
−
Ventilation
The EVR716 transceiver has an inlet air area on its bottom
face and an outlet air area on its top face (see figure
10-4).
First Installation Check Out
Prior to install the EVR716 transceiver, check all interwiring for continuity and isolation.
Install and connect the EVR716 transceiver (see paragraph 3).
Energize the equipment and check that the green LED (PASS) lights on.
3.
Mechanical Installation
The EVR716 transceiver is provided to be mounted in a rack in the aircraft. The EVR716
transceiver is equipped with two ARINC 600 attaching lugs (see figure 10-1). The mechanical
installation complies with requirements as defined by the ARINC 600 specifications.
The figures 10-2 and 10-3 show the mechanical characteristics of the EVR716 transceiver.
After installation, energize the equipment and check that the green LED (PASS) lights on.
4.
Interwiring
The interwiring complies with requirements as defined by the ARINC 600 specifications.
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
OPERATING INSTRUCTION
1.
Energization of the Equipment
The EVR716 transceiver is not provided with an "ON-OFF" switch. The EVR716 transceiver
starts operating as soon as 28 VDC is applied to the connector of the EVR716 unit.
2.
Normal Operating Modes
The EVR716 transceiver is not provided with operating buttons. It operate via the aircraft
controls.
A. Operational State
This is the EVR716 transceiver normal operating. A BITE device initializing the cyclic tests
allows checking operation of the EVR716 transceiver and indicating failures.
B. Modes
(1)Operating Modes
The operating modes are the following:
(a) Mode 0A
−
−
−
−
25 kHz analog voice transmission (ED-23B, DO-186A : receiver class C,
transmitter class 3; ARINC 716).
RF modulation : Amplitude modulation with double side bands.
25 kHz channelling.
Link with the microphone : normal audio input/output.
(b) Mode 0B
−
−
−
−
8.33 kHz analog voice transmission (ED-23B, DO-186A : receiver class E,
transmitter class 5; ARINC 716).
RF modulation : Amplitude modulation with double side bands.
8.33 kHz channelling.
Link with the microphone : normal audio input/output.
(c) Mode 1A
−
−
−
−
−
Data transmission with modem outside the transceiver. ACARS protocol
(ARINC 716, ARINC 618).
RF modulation :
Minimum Shift Keying Amplitude Modulation
(MSK-AM).
Channelling :
25 kHz.
Rate :
2.4 kb/s.
Access to the CSMA : non-persistent.
NOTE : This modem function is performed by the (C)MU)
−
Link with the (C)MU : twisted pair analog signal.
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
(2) Default Mode
At power up, the default mode is mode 0A, tuned to the fast tuned frequency (before
switching off).
NOTE: In less than one second, the aircraft control provides the ARINC 429 word
indicating the active frequency use.
(3) Change of Mode
Possible modes are ARINC 716 VOICE (0A or 0B modes) and ARINC 716 data
(mode 1A).
The selection is determined by:
−
the Voice/Data discrete ("V" :open state; "D" : grounded state),
−
the content of the ARINC 429 DFS bus label word,
−
the activity of the ARINC 429 bus (C)MU ("active" if the EVR716 transceiver
receives the 270 label every second),
−
the content of the label 270 word which determines if one (C)MU can be declared
primary.
C. Maintenance States
Two maintenance states are to be considered:
(1)
On-Line Maintenance (Aircraft Grounded)
In this state, the EVR716 transceiver is in the same environment as in its operational
state. This state is activated either by power up or by tests initiated by a pushbutton
(TEST) on the front panel (see figure 10-1).
During the tests, the equipment is not operational. Initiated tests are also allowed by
maintenance software control.
The result of the test is displayed on six LEDs on the front panel (see figure 10-3),
saved on the NVM (Non Volatile Memory).
(2)
Off-Line Maintenance
In this state, the EVR716 transceiver is not in its operational system environment but
in a technical environment (test bench, maintenance workshop, etc.). The activation of
this state is possible only when pins TP5A and MP14B are grounded. This state allows
the downloading of the functional and maintenance software. The tests provided in
this state allow an investigation at the SRU level.
The result of the tests is displayed on six LEDs on the front panel and five LEDs
located on the DPU (Digital Processing Unit) module indicating a failure code (SRU
level).
23-11-02
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OPERATION AND INSTALLATION MANUAL
KVJEVR718
Enhanced VHF Radio
EVR716
3.
Default Operating Instructions
The result of the tests activated either by power up or by the "TEST" pushbutton on the
front panel, is displayed on six LEDs on the front panel (see figure 10-3).
The following table presents the different cases :
LED
LIGHTING
CAUSE
CORRECTIVE ACTIONS
"FAIL LRU"
Red
comes on when the operator
initiated tests (init or
pushbutton) detect an internal
fault on the EVR716
transceiver (except on ARINC
429 bus or discrete inputs).
Replace the EVR716
transceiver.
"FAIL IN"
Red
comes on when the operator
initiated tests (init or
pushbutton) detect an input
fault on ARINC 429 bus or
discrete inputs.
− Check the interwiring.
− Replace the EVR716
transceiver
"PASS"
Green
comes on when the operator
initiated tests (init or
pushbutton) do not detect any
fault.
Not applicable
"VSWR"
Red
comes on when VSWR
measured by the EVR716
transceiver is higher than 2:1.
Not applicable
"TX"
Green
comes on when the EVR716
transceiver is in transmit
mode.
Not applicable
"RX"
Green
comes on when the EVR716
transceiver is in receive mode.
Not applicable
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