gsm-r tech handbook

age- i

Introduction

Technical Handbook

UK GSM-R Cab Radio

666/HH/86219/000 Issue 1.0 Page i

Preliminary Pages

Document No: 666/HH/86219/000

Issue 1.0

July 2007

Preliminary Pages

666/HH/86219/000 Issue 1.0 Page ii

SAFETY SUMMARY

ELECTRICAL SAFETY The Cab Radio (Voice) equipment complies with relevant statutory safety legislation, including the EU Low Voltage Directive 73/23/EEC and EN60950. Equipment operators are protected from potentially hazardous voltages within the GSM-R Cab Radio enclosure by a number of earthed panels. All accessible metal parts of the enclosure are electrically connected to an earth stud, allowing the enclosure to be connected to train chassis. Neither the driver's Control Head, nor the Handset contain any hazardous voltages. The base of the GSM-R roof-mounted Antenna is electrically connected to the train roof. The outer braid of each Antenna cable is connected to the train chassis at both ends. This provides protection for any persons who may be in physical contact with the GSM-R Cab Radio equipment should any of the Antenna come into contact with a high voltage source, such as an overhead catenary. Hazardous voltages are not present within other components of the GSM-R Cab Radio. MATERIAL SAFETY Use of materials which could pose a health and safely risk, either under normal or abnormal conditions, has been carefully controlled during the design of the GSM-R Cab Radio equipment. Any such materials used are listed within this handbook. The Cab Radio equipment has been designed and constructed so that, as far as is reasonably practicable, the risk of ignition and fire development - under both normal and abnormal operating conditions - is minimised. NOISE No part of the GSM-R Cab Radio equipment will emit a noise level within the normal audio range, in excess of 130dBA for a period of greater than 0.125 seconds. PERFORMANCE SAFETY The GSM-R Cab Radio complies with the EU EMC Directive89/336/EEC.

Preliminary Pages

666/HH/86219/000 Issue 1.0 Page iii

CONTENTS

INTRODUCTION.................................................................................................................................. 1

1 Introduction ................................................................................................................................ 2

GSM–R CAB RADIO SYSTEM DESCRIPTION ........................................................................................ 3

2 GSM-R Cab Radio System Description......................................................................................... 4 2.1 Siemens GSM-R Cab Radio Overview .......................................................................................... 4 2.2 GSM-R Cab Radio System Interfaces............................................................................................ 8 2.2.1 External Interfaces .................................................................................................................. 8 2.2.2 Internal Interfaces................................................................................................................... 8 2.3 Hardware .................................................................................................................................. 8 2.4 Connectors and Interfaces.......................................................................................................... 9 2.4.1 Connectors ............................................................................................................................. 9 2.4.2 Interfaces to External Equipment .......................................................................................... 10

CAB RADIO DETAILED DESCRIPTION ................................................................................................ 11

3 Cab Radio Detailed Description................................................................................................. 12 3.1 General ................................................................................................................................... 12 3.2 Radio Transceiver..................................................................................................................... 12 3.3 Cab Radio Internal Power Supplies............................................................................................ 14 3.4 Printed Circuit Boards............................................................................................................... 15 3.4.1 General ................................................................................................................................ 15 3.4.2 PC104 Logic Stack Assembly ................................................................................................. 15 3.4.3 Input/Output PCB.................................................................................................................. 21 3.4.4 Audio PCB............................................................................................................................. 22 3.4.5 Power Supply (PSU) PCB........................................................................................................ 24 3.4.6 Backplane PCB ...................................................................................................................... 26 3.4.7 Connector PCB...................................................................................................................... 27 3.4.8 PA PCB.................................................................................................................................. 28 3.4.9 MVB Interface PCB (Optional) ................................................................................................ 28 3.5 Gland Box ................................................................................................................................ 29 3.6 4 Line Drivers Control Panel ..................................................................................................... 30 3.6.1 Controller PCB....................................................................................................................... 30 3.6.2 Power Supply........................................................................................................................ 31 3.6.3 Microcontroller ..................................................................................................................... 31 3.6.4 RS422 Converter................................................................................................................... 31 3.6.5 Backlighting Control ............................................................................................................. 31 3.6.6 Keypad Interface................................................................................................................... 31 3.6.7 VFD Interface........................................................................................................................ 31 3.6.8 Keypad PCB........................................................................................................................... 32 3.6.9 Display ................................................................................................................................. 32 3.7 Handset................................................................................................................................... 32 3.8 Loudspeaker ............................................................................................................................ 32 3.9 UPS ......................................................................................................................................... 33 3.10 Train Mounted Antenna ......................................................................................................... 33 3.11 RF Cabling ............................................................................................................................. 35

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SOFTWARE ARCHITECTURE.............................................................................................................. 36

4 Software Architecture............................................................................................................... 37 4.1 General ................................................................................................................................... 37 4.2 Design Rationale...................................................................................................................... 37 4.3 Software Systems .................................................................................................................... 38 4.4 Control of External Interfaces ................................................................................................... 38 4.5 Human Machine Interface........................................................................................................ 39 4.6 Digital Interface ....................................................................................................................... 39 4.7 GSM-R Interface....................................................................................................................... 39 4.8 PMU Interface.......................................................................................................................... 39 4.9 TCP Interface ........................................................................................................................... 39

APPROVALS...................................................................................................................................... 40

5 Approvals .................................................................................................................................. 41 5.1 Environemental Performance................................................................................................... 41 5.2 EMC......................................................................................................................................... 42 5.3 Safety Testing.......................................................................................................................... 42 5.4 EIRENE Approval ...................................................................................................................... 43 5.5 BANNED/ TOXIC MATERIALS ..................................................................................................... 43

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666/HH/86219/000 Issue 1.0 Page v

LIST OF ABBREVIATIONS

AMP Ampere

ARINC Aeronautical Radio Incorporated

AT Attention

BR British Rail

CE European Community

CLI Calling Line Identity

COTS Commercial – Off the Shelf

DC Direct Current

DCP Drivers Control Panel

DIP Dual Inline Processing

DSD Driver Safety Device

DUART Dual Universal Asynchronous Receiver & Transmitter

EIRENE European Integrated Railway (Radio) Enhanced Network

EMC Electro Magnetic Compatibility

ESD Electrostatic discharge

ETCS European Train Control System (also known as EVC)

EVC European Vital Computer (also known as ETCS)

FRS Functional Requirements Specification

GPS Global Positioning System

GSM-R Global System for Mobile Communications - Railways

GSM-P Global System for Mobile Communications - Public

HCT High Speed CMOS, TTL compatible

HMI Human – Machine Interface (also known as MMI and DCP)

H/W Hardware

Hz Hertz

I/F Interface

I/O Input/Output

I/P Input

IP Environmental Protection factor or Internet Protocol

JRU Juridical Recording Unit or (also known as OTMR)

kbps Kilobits per sec

LAN Local Area Network

MMI Man Machine Interface (also known as HMI and DCP)

MT Mobile Termination

MVB Multi function Vehicle Bus

OEM Original Equipment Manufacturer

O/p Output

OTMR On Train Monitoring Recorder (also known as JRU)

PA Public Address

PCB Printed Circuit Board

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PMU Portable Maintenance Unit

PSU Power Supply Unit

PTT Press to Talk

R&TTE Radio and Telecommunications Terminal Equipment

RAM Random Access Memory

RF Radio Frequency

RMS Root mean squared

RS232 etc Serial Data Format Protocol

Rx Receiver

SDL Specification and Description Language

SIM Subscriber Identification Module

SDL Software Development Library

SRS System Requirements Specification

SSFS Sub System Functional Specification

TBR Train Borne Recorder

TCP Transmission Control Protocol

TTL Transistor – Transistor Logic

UART Universal Asynchronous Receiver & Transmitter

UML Unified Modelling Language

µP Micro-Processor

UML Unified Modelling Language

UPS Uninterruptible Power Supply

VDR Voltage Dependent Resistor

VFD Vacuum Fluorescent Display

Preliminary Pages

666/HH/86219/000 Issue 1.0 Page vii

ASSOCIATED DOCUMENTATION

Refer to the following publications for additional information on the equipment described

in this handbook:

No. Publication Document Number

1 Cab Radio – User Guide 666/HB/60024/003

2 Cab Radio –Maintenance Handbook 666/HA/62078/000

3 Interface Control Document 666/UJ/86001/000

4 EIRENE SRS V 14.0 CLA111D004

5 EIRENE FRS V 6.0 CLA111D003

666/HH/86219/000 Issue 1.0 Page 1

Introduction

INTRODUCTION

666/HH/86219/000 Issue 1.0 Page 2

Introduction

1 Introduction

This handbook gives a technical description of the UK GSM-R Cab Radio

Equipment as supplied to Network Rail by Siemens Transportation Systems.

The equipment comprises:

• Siemens GSM-R Cab Radio transceiver.

• One (or two) separate Drivers Control Panels.

• One (or two) handsets with PTT switch and cradle.

• One (or two) loudspeakers.

• A roof mounted antenna.

• Connecting RF cabling.

This handbook gives technical details of user functions but does not describe

how to make use of them. The User Handbook (see Associated Document 1)

should be referred to for those details.

Also Maintenance activities are the subject of the maintenance handbook (see

Associated Document 2).

666/HH/86219/000 Issue 1.0 Page 3

Cab Radio Detailed Description

GSM–R CAB RADIO SYSTEM DESCRIPTION

Cab Radio Detail Description

666/HH/86219/000 Issue 1.0 Page 4

2 GSM-R Cab Radio System Description

2.1 SIEMENS GSM-R CAB RADIO OVERVIEW

The Siemens UK GSM-R Cab Radio supplied to Network Rail provides voice

communications between trains and ground based organisations and personnel.

The equipment is compliant with EIRENE standards namely Eirene FRS

(Functional Requirement Specification, version 6) and SRS (System

Requirements Specification, version 14).

The Cab Radio consists of 3 main assemblies:

a) The Cab Radio Transceiver Unit.

Fig 1 - The Cab Radio Transceiver Unit


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b) The Drivers Control Panel(s) and associated handset and loudspeaker.

Fig 2 - Drivers Control Panel, handset and loudspeaker


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c) One antenna to suit the particular Vehicle.

Fig 3 – Example Antenna

The radio is enclosed within a metal housing and the Drivers Control Panel is a

standalone enclosure. The radio assembly is fitted to the train using brackets

which are normally custom to a particular train class, and connects to the train

via a ‘gland box’ assembly that is mated with a multi way connector on the radio

enclosure. All connections to the radio are made via the multiway connector

with the exception of the RF connection for which there is an N type connector

on the rear panel of the radio enclosure. The radio can easily be removed or

replaced by removal of the gland box (4 bolts), removal of the radio brackets

and removal of the N type connector.

The Cab Radio Transceiver Unit houses the GSM-R radio transceiver, a set of PCBs

and power supplies. The power supply module converts the train power to

levels required by the circuits within the radio unit.

The Drivers Control Panel contains a 4 line display screen, normal telephone dial

keys, direct dial and special function keys. A telephone handset and separate

loudspeaker are connected into the rear of the assembly to complete the Cab

equipment.

The UK GSM-R cab radio installation is shown in Fig 4. Dotted lines indicate optional supply items.


666/HH/86219/000 Issue 1.0 Page 7

Fig 4 - Typical GSM-R Cab Radio Installation

GSM-R Cab Radio Unit

GPS Rx & Antenna

JRU

Driver's Key Switch

(Cab 1 & 2)

PA

DSD (Cab 1 & 2)

Train Supply

Cab Equipment 1

Cab Equipment 2

Diagnostics Terminal (PMU)

UPS

GSM-R Antenna

GPS Power Supply Unit

Train Supply


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2.2 GSM-R CAB RADIO SYSTEM INTERFACES

2.2.1 External Interfaces The GSM-R Cab Radio system interfaces with the following:

• Train systems:

o The Driver Safety Device (DSD).

o The Public Address (PA) system.

o Driver’s Key.

o Fax.

o EVC.

o JRU / OTMR (H/W interface).

• Train Power Supply.

2.2.2 Internal Interfaces The key elements of the cab radio are:

• The Cab Radio unit incorporating DC-DC converters and PCB’s.

• The Drivers Control Panel(s).

• The Handset(s).

• The Loudspeaker(s).

• The GSM-R Antenna.

• The GPS Transceiver and Antenna (Option).

• UPS (Option).

• PMU (External to the radio).

A full list of interfaces can be found in the Interface Control Document (see

Associated Document 3).

2.3 HARDWARE

The radio assembly enclosure main components are:

• The GSM-R Transceiver Unit (containing a SIM module to provide vehicle

identity). This provides the radio functions required to communicate with

the GSM-R network.

• DC-DC Converter Power Supply Units (PSU) these convert the train supply

voltage into voltage levels suitable for powering the cab radio modules.


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• Logic PCB: This provides an interface to the processor via a PC104 standard

bus. It handles the audio switching, level adjustment, and routing

between the various interfaces. It also provides the serial data interfaces.

• Processor PCB: This is a PC104 standard module, located as a daughter

board on the Logic card. This board holds the memory and runs the Voice

Cab Radio application software. It communicates with the GSM-R

transceiver, logic card, HMI and external equipment via the I/O devices.

• Input/Output (I/O) PCB: This provides a number of digital inputs and

outputs (both train voltage and low voltage) for connection to other

components of the Voice Cab Radio and to other train equipment.

• Audio PCB: This provides the audio power amplifiers for the driver’s

loudspeaker(s) and handset(s).

• PA PCB: Provides the amplifiers and interface to the PA system.

• Interconnection PCBs.

External to the enclosure are:

• The rooftop antenna.

• One (or two) Drivers Control Panels.

• One (or two) Drivers Handsets.

• One (or two) Drivers Loudspeakers.

• RF cables connecting the radio assembly to the rooftop antenna.

• Cables connecting the Cab Mobile to the train and on train systems.

2.4 CONNECTORS AND INTERFACES

2.4.1 Connectors The connection between the radio assembly and the vehicle mounted cassette is

by way of an ARINC connector with 3 inserts. ARINC connector details are

defined in the Interface Control Document (See Associated Document 3).

There is a facility on both the front and rear face of the Cab Mobile enclosure to

connect a Portable Maintenance Unit. The PMU is for use by installers and

maintainers for both installation and commissioning and diagnostic purposes.

The PMU is not used by drivers. Driver Maintenance Functions are limited to

using the self test button, and responding correctly to errors identified as a

result of the radio’s background self testing. The radio offers a “Maintenance”

menu which contains additional diagnostic tools to allow a maintainer to

perform diagnostic tests without the use of a PMU.

The Drivers Control Panel(s), handset(s) and loudspeaker(s) are connected to

the rear of the radio assembly through the ARINC Connector.


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Earthing The cab radio cassette has an external M6 stud that is connected to an earth

point close by on the train chassis when the radio is installed.

2.4.2 Interfaces to External Equipment The interfaces to the Cab Radio are shown below:

Items shown with a * are available in hardware only, software interfaces are not

available.

The interfaces to external equipment are:

• RS232 interface for the PMU.

• RS422 and RS485 interfaces for:

o HMI.

o EVC / ETCS.

o Fax.

o (*JRU / OTMR).

• Low voltage inputs for the handset and UPS control lines.

• Train Power Supply.

• Train Voltage inputs and outputs (DSD, Drivers Key).

• PA.

• (*LAN Interface - Ethernet).

MMI 1

GSM-R Antenna

SVR400 Cab Radio

PMU (RS232)

Train Power Supply

EVC/ETCS, Fax, JRU/OTMR (RS422 / RS485)

LAN I/F (ethernet)

MMI 2

Digital Inputs Train Voltage

(6 off)

Digital OutputsTrain Voltage

(5 off)

RS422 Data Power

Supply

Audio

PTT, Hook Switch

UK PA (5V or 40V)

RS422 Data

Audio

PTT, Hook Switch

UPS Power Supply

Battery On Battery Low

Power Supply

Fig 5 – Interfaces to external equipment


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CAB RADIO DETAILED DESCRIPTION


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3 Cab Radio Detailed Description

3.1 GENERAL

The Cab Radio Transceiver Unit is broken down into the following sections:

• Radio Transceiver.

• Internal Power Supplies.

• Printed Circuit Boards.

• Gland Box.

Following this is a description of the control panel, handset, loudspeaker, UPS, antenna and RF cabling.

3.2 Radio Transceiver

The UK Cab Radio contains an integral OEM GSM-R radio transceiver. The main characteristics of this unit are:

• OEM Type Approved, to the EU R&TTE Directive, GSM-R radio transceiver

with SIM card reader capable of operating in both the GSM-R and GSM-P

frequency bands.

• The transceiver fitted may be either a Sagem or Kapsch device.

• ‘Eurocard’ style, sub-rack compatible construction.

• Compliant to EIRENE specifications, including required optional

features.

• Supports Full Duplex Voice communication.

• Supports Full Duplex Data communication.

• Class 2 (8-Watt) Transmitter.

• Asynchronous Serial Port (full H/W handshaking) using ‘AT’ commands

according to GSM 07.07 and GSM 07.05. This interface is connected via

the transceiver unit’s backplane connector. Note that the Sagem

transceiver provides a HCT compatible interface, whereas the Kapsch

transceiver has an RS232/422 compatible interface.

• 4 wire audio interface port located at the transceiver unit’s backplane

connector.

• A 50Ω TNC RF connector.

• A temperature warning output. Support of CLI identification (via Serial

Port) and call type for incoming voice and data calls.

• No limitation on the duration of one-to-one calls to or from the Radio.


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The unit connects to other Cab Radio hardware via the backplane connector.

The Radio Transceiver is controlled via AT commands sent from the Processor

PCB over an asynchronous serial data interface and incorporates a SIM card

reader. The SIM card can be programmed with independent data, e.g. Vehicle

ID Number.

The serial link is also used to provide an indication of the level of the signal

currently being received.


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3.3 CAB RADIO INTERNAL POWER SUPPLIES

The power supply consists of two major components. A eurocassette style DC-DC converter and a separately mounted Power Supply PCB (see section 3.4.5).

If the train Voltage is greater than 24V it is fed through a Switched Regulator module fitted to the PSU PCB and then through a DC-DC converter which provides two 13V Supply rails. If the train Voltage is 24V or less, it is fed straight into the DC-DC converter. The Switching Regulator and DC-DC Converter both provide transient protection and filtering. One 13V DC rail is used within the Radio assembly, the second 13V(I), produces an isolated 13V supply which is used to provide power to the cooling fans, and power outside the Radio assembly, e.g. to the MMIs.

The 13V supply to the ‘Sagem’ radio is routed via a diode in order to reduce the supply level to approximately 12.3V.

The 13V rails are themselves connected to two 13-5V DC-DC converters (located on the PSU PCB) to supply the various PCB’s.

Switched Regulator

Train Voltage DC-DC

Converter

13V to 5V DC-DC

13V(I) to 5V(I)

DC-DC

Train V (Other than

24V)

Train V (24V)

13V to Logic, I/O, PA, Radio TRx

12.3V to Sagem Radio

0V Reference

0V Reference

5V to Logic, PC104 stack, I/O,

Kapsch Radio

5V(I) to Logic

0V(I) Reference

13V(I) to MMIs

Output 1

Output 2

13V(I) to Internal Fans

Fan Enable 13V(I) to External Fans

13V(I) to UPS

Power Supply PCB

Fig 6 – Power Supply Distribution


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3.4 PRINTED CIRCUIT BOARDS

3.4.1 General The Cab Radio Transceiver unit includes the following PCBs:

• The PC104 Logic Stack assembly comprising:

o The Processor PCB.

o The Logic PCB.

o MVB PCB (*can be fitted as a future option).

• Input/Output PCB.

• Audio PCB.

• Backplane PCB.

• Connector PCB.

3.4.2 PC104 Logic Stack Assembly

3.4.2.1 PROCESSOR PCB

Fig 7 – Processor Board

The Processor PCB provides the main processing and functional control facility

for the GSMR Voice Cab Radio, and is based on the PC104 standard. It is a COTS

Processor

RS232 Serial Ports x 4

Ethernet LAN Port

Floppy / Hard Disk Controller

Sound Processor

Watchdog

Random Access

Memory

Real Time Clock

Non Volatile Memory

(Application Code) Bank 1

Non Volatile Memory

(Application Code) Bank 2


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board that is mounted on the Logic card. The PCB receives power from, and

communicates with its host Logic PCB via the PC104 bus connector.

The Processor PCB provides four RS-232 serial data ports, which support a data

transfer rate of up to 115kbps with full handshaking capability. In addition, the

PCB is capable of simultaneously supporting data transfer to and from the serial

interfaces provided by the Logic Interface PCB.

The on-chip memory is capable of storing two versions of the application code

and application database information. The PCB provides a facility that allows

serial download of information to the on-chip memory via one of its RS-232

ports. The version of application code which is not in use can be overwritten

using the PMU which is connected to a serial interface.

The PCB provides interfaces, which allow connection of an external floppy disk

drive or hard disk drive. These interfaces are used during equipment

development, but are not be connected during normal use.

The microprocessor is capable of being configured to either initialise using

routines stored within non-volatile memory or from a connected disk drive.

In addition, it is possible to store downloadable data from the Ground System

(e.g. text messages etc) into the Disk on Chip, without reprogramming the

application code. This is achieved by using a “flash-file” system, i.e. the flash

memory emulates a solid state disk.

A watchdog circuit is provided on the microprocessor PCB. In the event of a

failure which resulted in the software running out of control, a microprocessor

reset is forced, allowing the system to restart into a known state.

The microprocessor PCB is also equipped with a sound chip, allowing the PCB to

process .WAV files for generation of tones, in accordance with Eirene. These

tones will then be output, in the form of an analogue – LINE OUT - signal, to the

Logic PCB.

The LAN ethernet port (hardware provision only), resides on this PCB.


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3.4.2.2 LOGIC PCB

A block diagram of the Logic PCB is shown on the next page.

The Logic PCB provides the following functionality :

• An interface to the PC104 Bus and a physical mount for the PC104 PCB

stack.

• A changeover circuit to direct audio, alert tones, PTT and Hookswitch

signals to/from the set of MMI which is in use (dependent upon state of

driver’s key inputs).

• Audio interfaces, signal level adjustment & audio signal routing for the

following:

o Audio input from GSM-R Radio Transceiver.

o Audio input from Microprocessor PCB (alert tones).

o Audio input from the Driver’s MMI equipment (Microphone).

o Audio output to GSM-R Transceiver.

o Audio outputs to the Driver’s MMI (Earpiece and Loudspeaker).

o Alert tone output to the Driver’s MMI (mixed into Loudspeaker output).

o Audio output to the Train PA System.

• 7 off RS422 serial data interface circuits, each providing electrical isolation

and transient protection. Two of these are used to connect to the MMIs.

The remaining are reserved for interfaces to equipments that are not

supported on the UK Cab Radio. Two of these are capable of being

configured as RS485.

• 1 non-isolated RS232 serial interface circuit, which are used to provide

connection for the PMU.

• 1 HCT serial data interface circuit, providing a communication path

between the microprocessor PCB and the GSM-R radio transceiver unit.

• Routing for the Ethernet interface provided by the PC104 microprocessor

PCB to the Connector PCB. Volume Control circuit for the external radio

equipment

• Hardware reset circuit for the Cab Radio microprocessor and radio

transceiver.

• Low Voltage (13V) actuated, optoisolated inputs for

• The PTT & Hookswitch signals from each MMI.

• Reset signal.

• Cradleswitch inputs for each handportable radio .

• A Low Voltage (13V) output contact providing a PTT signal to the external

analogue radio.

666/HH/86219/000 Issue 1.0B Page 18


Fig 8 – Logic PCB Block Diagram

PC104 Bus

PC104 Interface

Tone Input

Audio Level Commoning

Cross Point

Switch

Audio Level Adjustment

Audio Output to PA

Control & Data Lines to I/O PCB, PA PCB & Audio PCB

Audio Input from Mic

Audio I/P from GSM-R Radio

Audio to GSM-R Radio

Audio Output to Earphone

DUART Isolation HCT–RS422 Conv. RS422 I/Fs 2

HCT–RS422 or RS422/485

Conv.

RS422 I/F

Routing of Ethernet Interface

Audio Output to Loudspeaker

2

Quad UART

Isolation 3 3

From Audio PCB

Audio Output to Intercom

Reset 1

Reset 2

Reset Logic & Timer

Reset Signal to μP & GSM-R

Radio

LS Speech

LS Tones

To Audio PCB

PTT 2

Hook Switch 2

RS422/485 I/Fs

TTL – RS422 Conv.

TTL – RS232 Conv.

COM Ports (μP)

RS422 I/F

2Isolation

2

TTL – RS422 Conv. RS422 I/F

GSM-R Radio

PMU/ TRx Download

PTT 1

Hook Switch 1

Reset (to Cab Radio)

666/HH/86219/000 Issue 1.0B Page 19


Audio Routing

The Logic PCB provides audio routing between the following audio inputs:

• Audio input from the Driver’s Microphone.

• Microprocessor PCB sound output - for provision of alert tones.

• Audio input from the GSM-R radio transceiver (provided with software

controllable gain, using a digital potentiometer).

It also routes to the following audio outputs:

• Audio output to the Driver’s Loudspeaker.

• Tone output to the Driver’s Loudspeaker.

• Audio output to the Driver’s Earpiece.

• Audio output to the GSM-R radio transceiver (provided with software

controllable gain, using a digital potentiometer).

• Audio output to the Train PA.

Audio inputs to the Logic PCB are provided via isolation transformers, located

on other PCBs. Audio signals entering the Logic PCB are amplified to a

common level prior to being fed into a cross-point switch.

This cross-point switch connects audio inputs to audio outputs. This is

controlled by the PC104 microprocessor PCB, via the PC104 interface.

The various audio output signals from the cross-point switch are then

adjusted, according to the level required by the audio device to which they

are connected. Audio outputs are provided with isolation transformers, again

located on other PCBs.

The audio circuits on the Logic PCB ensure a flatness tolerance of +1, -3dB

across the frequency range 300Hz to 3kHz at each audio output.

Serial Interface to GSM-R Radio

An RS232 to HCT logic converter allows communication between the

Processor PCB, via one of its serial ports, and the Radio Transceiver, via its

backplane connector.

Serial Interface Translation and Isolation

The Logic PCB provides translation from RS232, as provided by the Processor

and Serial Interface PCBs, and RS422/RS485, as required for connection to the

external equipment.


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The RS232 Processor PCB to PMU interface is also routed through the Logic

PCB, allowing transient and ESD protection to be fitted.

PMU Interface/Radio Transceiver Service Interface

This allows the external PMU connector to be used to connect the PMU for

Cab Radio software updates or system monitoring, or to allow radio

transceiver firmware to be updated, without the need to remove panels from

the Cab Radio.

Cross-Point Switch

This allows the various audio inputs to the Cab Radio unit to be connected

through to the required audio output, under the control of the PC104

Microprocessor PCB.

Individual switches within the cross-point switch can be closed or opened

under software control. To do this, the microprocessor selects the ‘address’ of

the required switch and sets a ‘data’ bit to logic ‘1’ or ‘0’.

PC104 Bus Interface

This provides address decoding and data bus control, which controls the flow

of data between the Logic PCB and the Microprocessor PCB.

On the logic PCB, the PC104 interface provides address and data bits to the

cross-point switch, allowing audio routing through the PCB to be controlled

by the microprocessor.

Data transfer between the Microprocessor PCB, the PA PCB and the I/O PCB is

also routed through the Logic PCB and is controlled at this interface. The

interface allows the microprocessor to control the state of the digital outputs

and read the state of the digital inputs on these PCBs.

DUART

A dual channel UART is provided, which communicates with the

Microprocessor PCB via the PC104 interface. The device provides two serial

data channels, which supplements those provided from the microprocessor

PCB.

Both these data interfaces have isolation to be provided between the DUART

and the respective data transceivers.

Both of these data interfaces appear externally as RS422.


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Quad UART

This provides a further 3 serial interfaces and communicates with the

Microprocessor PCB via the PC104 interface, in a similar fashion to the DUART.

All three of these data interfaces are provided with isolation between the

UART and the respective data transceivers.

All three appear externally as RS422, with two interfaces capable of being

hardware configured as RS485.

3.4.3 Input/Output PCB The I/O PCB provides:

• 6 digital inputs operated from train voltage.

• 5 digital outputs which are capable of switching the train voltage.

The state of these Digital Inputs is made available to the Microprocessor PCB via the PC104 interface on the Logic PCB. The state of the Digital Outputs is controlled by the Microprocessor PCB via the same interface.

Fig 9 – I/O PCB Block Diagram

3.4.3.1 TRAIN VOLTAGE DIGITAL INPUTS

A total of 6 isolated inputs are provided on the I/O PCB, each of which is capable of being operated by an incoming voltage level within the range 24 to 110VDC nominal (i.e. 16 – 140VDC).

These circuits provide an isolation voltage of ≥ 1.5kV AC.

These inputs are designed to withstand the voltage surges defined in RIA12 and EN50155 (with particular regard to Waveform A).

The state of these digital inputs is provided to the Microprocessor PCB via the Backplane and PC104 Interface circuitry on the Logic PCB.

To/From

Logic PCB

6 off Train Voltage Inputs

5 off Train Voltage


666/HH/86219/000 Issue 1.0 Page 22

3.4.3.2 DIGITAL OUTPUTS

All digital outputs have isolated changeover relay contacts, capable of switching the train voltage range defined above, with a continuous current rating of at least 500mA. These outputs are configured as normally open.

These circuits provide an isolation voltage of ≥ 1.5kV AC.

These outputs are designed to withstand the voltage surges defined in RIA12 and EN50155 (with particular regard to Waveform A).

The state of the digital outputs is controlled by the Microprocessor PCB, via the PC104 Interface circuitry on the Logic PCB.

3.4.3.3 TRANSIENT PROTECTION

Note that, for both digital inputs and outputs, the transient protection devices (VDRs) are fitted on the Connector PCB and not the I/O PCB.

3.4.4 Audio PCB This PCB provides the audio I/O to connect to the Driver’s Loudspeaker and Handset. This PCB provides the following functionality:

• DC bias for the handset microphone.

• Microphone pre-amplifier.

• Loudspeaker Class D Power Amp.

• Adjustable gain via software controlled digital potentiometers for signals to the loudspeaker and handset earpiece and from the handset microphone.

• Changeover circuit to allow selection/routing of audio signals to/from Cab 1 or 2, depending upon the state of the Driver’s key inputs to the Cab Radio.

Fig 10 – Audio PCB Block Diagram

From Logic PCB

Isolating Transformer

Power Amp



Loudspeaker

Earpiece

Mic

LS Out Cab 1

LS Out Cab 2

Ear Out Cab 1

Ear Out Cab 2

Mic In Cab 1

Mic In Cab 2

Pre Amp

DC Bias for Mic

Cab 1/ 2 Select

I2C Bus

Driver

Transient Protection




666/HH/86219/000 Issue 1.0 Page 23

3.4.4.1 LOUDSPEAKER VOLUME CONTROL SETTING

Three bands of volume level adjustment are required on the audio output to the driver’s Loudspeaker. Furthermore, when the Driver’s handset is removed from its cradle, a reduced audio level is provided from the loudspeaker.

Note: The required volume band is selected using the PMU according to the background noise level within the cab. The driver then has the capability to select individual volume levels within the selected band, using his Control Panel.

The Audio PCB provides a pre-amplifier for the loudspeaker power amplifier. The gain of this pre-amplifier is controlled by the microprocessor PCB. As the power amplifier (which is located on the Audio PCB) provides a fixed gain level, this pre-amplifier sets the input level to the power amplifier such that the required audio power levels at the driver’s loudspeaker can be obtained.

The following table gives the required volume levels from the driver’s loudspeaker:

Adjustment Bands

Quiet Cab

Normal Cab

Noisy Cab

Loudspeaker Power

1 1 0.25W 24.0dBm

2 0.335W 25.5dBm

3 Default 2 1 0.50W 27.0dBm

4 3 Default 2 1. 00W 30.0dBm

5 4 3 Default 2.00W 33.0dBm

5 4 3.00W 34.8dBm

5 4.00W 36.0dBm

Handset off hook 13 dBm below selected volume level

Table 1 - Volume control settings

3.4.4.2 EARPIECE VOLUME CONTROL SETTING

The Audio PCB allows adjustment of the handset earpiece volume to levels which correspond with the loudspeaker bands chosen.


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3.4.5 Power Supply (PSU) PCB The PSU PCB provides:

• A physical mounting for and electrical connections to the Switched Regulator.

• A bespoke power supply circuit converting 13VDC into 5VDC.

• A bespoke power supply circuit converting 13V(I) DC into 5V(I) DC.

• Two isolated digital inputs for use with the UPS. These are intended to allow the UPS to signal the Cab Radio that:

a) The Cab Radio is operating on battery backup (i.e. train supply failed).

b) The Battery Charge level is low.

• A circuit controlling operation of the two stirrer fans within the Cab Radio Assembly and, if present, the external cooling fan required to allow the Radio to operate at an ambient temperature of up to +70°C.

Fig 11 – PSU PCB Block Diagram

Switched Regulator

Train V (excluding 24VDC)

Train V (24VDC)

DC-DC Converter

(Not part of the PSU PCB - connects to the Backplane)

R adjust

Blocking Diode

13V-5V DC-DC Converter

13V 5V

13V-5V DC-DC Converter

5V(I) 13V(I)

Radio Transceiver

(connected to Backplane)

Fan Control

Temperature Sensor

Stirrer Fans

(on Backplane / Connector PCBs)

On/Off Control

External

Cooling Fans

From

Connector PCB

Isolated I/P

Isolated I/P

To

Logic PCB

Battery On

Battery Low

HP Charger Supply

666/HH/86219/000 Issue 1.0B Page 25


3.4.5.1 SWITCHED REGULATOR

The Switched Regulator is fed from an incoming train supply (via the connector between the PSU PCB and the Connector PCB) within the range 30 to 144 VDC. The output supply is then returned to the PSU PCB for subsequent routing to the DC-DC converter via the Backplane. This output voltage is set using a resistor, also fitted on the Power Supply PCB, to 34VDC.

Where the train supply voltage is 24VDC, this is routed directly to the DC-DC converter via the PSU PCB. A blocking diode is provided to prevent this supply feeding back into the switched regulator.

3.4.5.2 13 V TO 5V DC-DC CONVERTER PSU

The PSU provides a bespoke, high efficiency 13V to 5V power supply, based around a synchronous buck converter, which is used to provide power to circuits wholly within the Cab Radio assembly (e.g. the Microprocessor PCB). The output of this 5V PSU is 5V ± 5% @ ≥4 Amps. The 5V supply is distributed via the Backplane.

3.4.5.3 13V(I) TO 5V(I) DC-DC CONVERTER PSU

The PCB also contains a bespoke, high efficiency 13V to 5V PSU which is used to provide power to circuits connected outside the Cab Radio assembly (e.g. data transceivers). The output of this PSU is 5V ± 5% @ ≤ 1.0 Amp. The 5V(I) supply is distributed via the Connector PCB.

3.4.5.4 UPS 13V SUPPLY

A 13V(I) supply for a UPS is also provided. This is current limited to 15W by the UPS design.

This supply is also used, by the UPS, to provide the two inputs to the UK Cab Radio used to identify the source of power to the cab mobile.

3.4.5.5 FAN CONTROL CIRCUIT

This is provided to control the fans which are required to achieve the specified temperature range. These are enabled and disabled in accordance with the temperature warning output provided by the Radio Transceiver.

For 55°C operation, two stirrer fans are fitted within the Cab Radio. The internal stirrer fans themselves are not fitted to this PCB.

For 70°C operation, an additional fan is also required. This is located external to the Cab Radio enclosure, within the attached Plenum Chamber.

The circuit is enabled either from the digital output provided by the Kapsch radio, or from the analogue signal provided by the Sagem unit.

To prevent fan noise appearing on audio circuits within the Cab Radio, the circuit switches the isolated 13V(I) signal to operate the fans.


666/HH/86219/000 Issue 1.0 Page 26

3.4.5.6 UPS ISOLATED DIGITAL INPUTS

Two isolated digital inputs are provided for operation of the Cab Radio under battery backup (UPS) power.

These circuits provide an isolation voltage of ≥ 500V AC.

The inputs are used to allow the UPS to signal the Microprocessor PCB that:

a) The train power supply has failed, i.e. the Cab Radio is operating on UPS Battery power.

b) The UPS batteries are at low charge.

These inputs are provided with transient / ESD protection via transzorbs located on the Connector PCB.

The state of these digital inputs is provided to the Microprocessor PCB via the Backplane and PC104 Interface circuitry on the Logic PCB.

3.4.6 Backplane PCB This provides the required tracking and mating connectors for interconnection of the Logic, PA, Audio Control, PSU and I/O PCBs, the radio transceiver (which may be either a Kapsch or Sagem unit) and DC-DC converter.

Variation of connector size (number of ways), or offsetting of its position is normally used, to prevent mis-insertion of PCBs. Where this is not possible, these connections are provided with a coding comb (or similar).

With the exception of the Train Power Supply connection between the PSU PCB and DC-DC Converter, the Backplane only carries signals which are connected wholly within the Cab Radio assembly.

The backplane contains:

• Isolation transformers for audio signals to/from the GSM-R radio.

• Storage capacitors for the power supply to the GSM-R Radio Transceiver, on both the 13V and 5V rails.

• A set of transzorbs, which provide ESD protection for the PMU interface. These are directly connected to earth (chassis) via PCB mountings.

• A control circuit which allows transceiver software updates.

• A mounting for, and electrical connection to, one internal stirrer fan, located behind the PC104 stack.

• Three D type connectors providing a means of connecting an attached MMI to the Cab Radio (25 way), a connection for the PMU interface (9 way) and a connection for the external fan (9 way). The 9 way D types are of opposite gender.


666/HH/86219/000 Issue 1.0 Page 27

3.4.7 Connector PCB The Connector PCB is used to distribute signals which are either sourced from outside the Cab Radio assembly, or are intended to be supplied to equipment outside the Cab Radio assembly.

The PCB provides a physical mounting for the external 3 way ‘ARINC 404’ connector on the Cab Radio. The mounting arrangement comprises three pin grid arrays (PGAs) providing for:

• a 26 way insert (for train power and train voltage I/O connections).

• a 40 way insert (for MVB, low (13V) power feeds and PA/Intercom connections).

• a 67 way insert (for low voltage connections, such as audio, serial data and 13V I/O).

These PGAs accept the PC tails on the contacts within the ARINC connector.

The PCB also provides further connectors, all DIN 41612, which allow it to connect:

• Into the Logic PCB, for external serial interfaces and low voltage I/O.

• Into the Audio Control PCB for audio interfaces to the MMI(s).

• Into the I/O PCB, for train voltage I/O.

• Into the PA PCB for the or UK PA interface.

• Into the PSU PCB for the Train Power Supply input, UPS digital inputs and 13V(I) outputs.

A connector is fitted to allow direct connection of the MVB interface from the associated PC104 PCB, should this option be required.

The Connector PCB contains voltage dependent resistors (VDRs) for all train voltage digital I/O circuits together with transient protection devices (Transzorbs) all other external interfaces except transformer coupled audio interfaces. All these protection devices are directly connected to earth (chassis) via PCB mountings.

The Connector PCB also provides audio isolation/matching transformers for the audio outputs to the MMIs and external analogue radio.

In addition, the PCB provides:

• A connection to the Service Interface connector on the front of the Kapsch transceiver, comprising a 15 way density-and-a-half D connector, plus a control circuit enabled by the ‘Download Enable’ signal from the Logic PCB.

• A 9 way D connector, which provides an optional PMU interface.

• Electrical connection to one internal stirrer fan.


666/HH/86219/000 Issue 1.0 Page 28

3.4.8 PA PCB .

For the UK Cab Radio, this PCB provides a 40/5V UK PA interface.

The UK PA interface consists of a digital output (voltage free relay contact) and an audio signal output, as follows:

a) Radio PA Enable Output

This is a digital output relay contact, which is closed by the Cab Radio when a PA call is received by the Cab Radio, from the GSM-R ground system. The output contact switches a train supply DC voltage and is compliant with EN50155 and RIA 12.

b) PA Audio Output

Two audio outputs, one providing 40Vrms nominal and the other 5Vrms nominal, are provided using a transformer which meets the BR specification 1965. A relay contact switches the audio common from this transformer onto the line, so that no loading is presented to the line when the Radio PA is inactive. The audio amplifier circuit, which precedes the transformer, contain a digital potentiometer, which allows the actual audio level at the output to be varied, under software control.

Of these audio outputs, only one is used in a particular installation.

The electrical audio power interfaces are capable of delivering the following levels:

Audio Level from output (1) : 40 V rms @ 3.5 watts.

Output impedance at output (1) : 460Ω

Audio Level from output (2) : 5V rms @ 3.5 watts

Output impedance at output (2) : 50Ω

3.4.9 MVB Interface PCB (Optional)

The optional MVB interface PCB can be fitted to provide an MVB-compatible

interface from the GSM-R Cab Radio to Train control equipment on the train. It

is a COTS unit based on the PC104 standard and is a daughter board that is

fitted to the main processor board as part of a PC104 stack with a small ribbon

cable connected to a connector on the backplane.


666/HH/86219/000 Issue 1.0 Page 29

3.5 GLAND BOX

This houses the mating half of the ARINC connector on the Cab Radio and provides a set of EMC cable glands for termination and support of the train wiring to the Cab Radio. Each discrete interface is provided with an individual EMC gland (e.g. wiring to the PA system is routed via one gland, wiring to a driver’s handset via another, etc). The Gland Box provides for all possible interfaces to the Cab Radio. Unused interfaces have the gland positions fitted with blanking plugs.

The EMC glands allow direct bonding of the cable screens to earth, thus avoiding the use of lesser connection mechanisms, such as pig-tailing.

The Cab Radio is earthed via a 6mm stud on the Gland Box with the earth connection to the Cab Radio made via the earth terminal within the ARINC assembly.

The Gland Box is mounted on the Cab Radio via a number of threaded fixings.

A diagram of the Cab Radio with attached (Fully Populated) Gland Box is shown.

Fig 12 – Gland Box


666/HH/86219/000 Issue 1.0 Page 30

3.6 4 LINE DRIVERS CONTROL PANEL

3.6.1 Controller PCB

The Controller PCB provides the following functionality:

• An 80C51 compatible microcontroller.

• A power supply circuit, which converts the 13V feed from the Cab Radio into the supplies required by circuitry within the MMI.

• An RS422 transceiver providing a serial data path to the Cab Radio.

• Control of the backlights on the Keypad PCB.

• Scanning of the keys on the Keypad PCB.

• Communication with the MMI’s VFD.

• A Reset circuit, which provides the RESET signal used within the MMI.

Fig 13 - 4 Line Drivers Control Panel Block Diagram

Power Supply

13V From Cab Radio

5V

Microcontroller

Keypad (Keypad PCB)

Logic RESET

RESET

VFD Connector

Backlights (Generic)

Backlights (Emergency)

Backlights (Signaller)



TTL-RS422 Converter


RS422 I/F (from Cab Radio)

RESET

Ambient Light

Detector

4s Delay Reset (to Cab Radio)

666/HH/86219/000 Issue 1.0B Page 31

Drawings

3.6.2 Power Supply This is a small PCB mounted, non-isolated switching DC-DC converter which provides the 5V supply required by the microcontroller and other MMI circuits. A diode is fitted at the power input from the Cab Radio, which provides reverse polarity protection.

The 13V supply from the Cab Radio is used to provide power to backlighting, via a reverse protection diode.

Transient protection is fitted close to the D connector, which provides ESD protection for the power supply input. As no earth connection is provided at the MMI, this is referenced to supply 0V.

3.6.3 Microcontroller This controls the various functions performed by the MMI and communicates with the Cab Radio, via a serial interface.

It uses an 80C51 compatible Microcontroller.

The Microcontroller contains the required Program (Flash) memory and RAM. No external memory ICs are provided on the Controller PCB.

3.6.4 RS422 Converter This translates between the balanced RS422 data provided by the Cab Radio and TTL levels, compatible with the serial interface on the microcontroller.

The converter is capable of data rates of up to 38400 bps.

Transient protection is fitted close to the D connector, which provides ESD protection for the RS422 interface. As no earth connection is provided at the MMI, this is referenced to supply 0V.

3.6.5 Backlighting Control This allows the intensity of the keypad backlighting to be varied, under the control of the microcontroller and application software.

In general, two levels of backlighting are provided for the keys. The automatic switchover point for these levels are set using an ambient light detector (e.g. phototransisitor) driving a comparator.

In addition to this, the Emergency and Urgent pushbuttons are also provided with a third, brighter, backlighting level used when a respective call is in progress. The Emergency and Urgent buttons can be flashed on and off.

3.6.6 Keypad Interface The Controller PCB configures the keypad into a row/column matrix, scanned under the control of the Microcontroller.

3.6.7 VFD Interface This allows the Microcontroller to display information on the VFD (Vacuum Flourescent Display). An 8 bit data bus is provided, together with handshaking lines required to monitor the status of the VFD.


666/HH/86219/000 Issue 1.0 Page 32

3.6.8 Keypad PCB The PCB provides the electrical connections for the keys, separating these into a row/column matrix compatible with the Controller PCB. The keys are actuated using Tactile Domes fitted to the Keypad PCB, which are operated by the keymat.

All keys are provided with backlighting, controlled by the Microcontroller on the Controller PCB. The ‘Emergency’ key is provided with Red backlights. All other keys are provided with Yellow backlights.

All keys are rated for better than 106 operations.

The Keypad PCB also provides a physical mounting for the ambient light detector, and connects this to the Controller PCB.

3.6.9 Display A 4 line Vacuum Fluorescent Display is used on the Drivers Control Panel. The characters are provided using a 5X7 dot matrix format. These characters are 5mm high.

The colour of the characters is modified by fitment of a blue anti-glare coloured filter in front of the VFD.

The display provides 4 levels of brightness, controllable using software via the interface on the Controller PCB.

3.7 HANDSET

The drivers handset connects to the rear of the cab radio. A single, voltage free, normally open pushbutton PTT switch is incorporated into the handset and a hookswitch is fitted into the cradle.

Fig 14 – Handset

3.8 LOUDSPEAKER

The loudspeaker is Integrated within the train cab, normally in the roof panel with

a suitable grille.


666/HH/86219/000 Issue 1.0 Page 33

3.9 UPS

The UPS Assembly comprises:

An enclosure containing the following:

• A control PCB.

• DC-DC Converter.

• A set of batteries.

Three variants of UPS are available which offer holdup times of 1, 2 and 4 hours respectively.

The UPS provides digital outputs to provide status information to the Cab Mobile including:

• Current Power Source – (Batteries or Vehicle supply).

• Batteries Low (10 minutes talk time left).

• UPS present.

The UPS design incorporates an “over ride” switch which allows a user to bypass the vehicle supply and power the cab mobile for 5 minutes if the Vehicle supply is missing and use of the radio is required. 5 Minutes provides long enough for the Cab Mobile to power up and initialise and for the user to enable the drivers control panel. Once the Drivers control panel is enabled (by pressing the Reg/dereg button for 2 seconds), the user can continue to use the radio after the 5 minute timer subject to an inactivity timer not expiring (set to 30 minutes). The inactivity timer is reset on each user action.

3.10 TRAIN MOUNTED ANTENNA

A roof-mounted Antenna is fitted. The GSM-R Antenna is a low-profile robust

assembly designed for fitting to vehicle roofs where a limited operating height is

available and conditions are harsh, such as high-speed trains.

Fig 15 - Antenna


666/HH/86219/000 Issue 1.0 Page 34

The radiating element is fixed to an aluminium base beneath a fibreglass radome,

making the overall assembly waterproof.

Alternative antennas are available to suit other particular constraints, (eg low

profile for some locos). Examples are shown below:

Fig 16 - Kathrein Antenna Type 741009

Fig 17 - Huber and Suhner - Sencity Antenna

Fig 18 - Sirtel Antenna type LP903


666/HH/86219/000 Issue 1.0 Page 35

Fig 19 - Sinclair Antenna- type ST421

3.11 RF CABLING

The antenna assembly is mounted onto the train roof via a ground plane and DC

grounded by direct connection between the Antenna base and the train roof. The

outer braid of the Antenna coaxial feeder cable is connected to the vehicle body at

both the Antenna and Radio assembly ends, as shown below.

ANTENNA

RADIO ENCLOSURE

Vehicle Body Earth

Vehicle Body Earth

Coaxial Cable

Fig 20 - Antenna Earthing Arrangements


666/HH/86219/000 Issue 1.0 Page 36

SOFTWARE ARCHITECTURE


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4 Software Architecture

4.1 GENERAL

This section introduces the architectural components of the GSM-R Cab Radio.

Each architectural component has been defined as a UML package, which is used to auto-generate the appropriate SDL Blocks and SDL Processes.

4.2 DESIGN RATIONALE

The Object Models, State Charts, Operations defined in the GSM-R Cab Radio SSFS were the driving influence on the breakdown of the GSM-R Cab Radio into its internal architecture.

Each of the SSFS Object Models and SSFS operations was used to define what Packages were required. Each of these Packages is automatically transformed into an SDL Block, by the Telelogic Tau tool.

This resulted in the following packages supporting particular SSFS Object Models:

Package Name State Diagram/Object Model/Operations supported

Location And Identity

Cab Radio Variants Model

Cab Radio Areas Model

Cab Radio Terminals Model

Cab Radio State Model

Cab Radio Functional Number Registration Status

Location and Identity SSFS Operations

Calls

Cab Radio Calls Object Model

One To One Voice Call State Chart

Group Call State Chart

Broadcast Call State Chart

Voice Call SSFS Operations

Configuration Management

Cab Radio Configuration Object Model

Configuration Management SSFS Operations

Text Messages

Cab Radio Text Message Object Model

Text Message SSFS Operations

Diagnostics

Diagnostics Object Model

Diagnostics State Chart

Diagnostics SSFS Operations

Logger

Logging operations of the Voice Call and Text Message Operation.

Emergency Call Confirmation Initiation.

Table 2 – Packages and SSFS Onject Models


666/HH/86219/000 Issue 1.0 Page 38

Each package consists of a number of processes. Each process is either an active process (i.e. a process which has a number of states) or a passive process, which does not have any related states.

There is at least one process within each block which is created at system start-up, and which controls the creation of any dynamic processes. The dynamically created processes have one of two purposes:

1. Managing the transition of a temporary object through its various states from instantiation to destruction (e.g. OneToOneVoiceCall)

2. Managing access to a particular type of data when that data exists (e.g. CRPreDefinedNumberDatabase).

Each package defines a number of Remote Procedures that enable other packages to invoke behaviour on or retrieve/modify information held by the package.

4.3 SOFTWARE SYSTEMS

The Cab Radio software consists of two software sub-systems:

• CabRadio.

• CabRadioAdmin.

The ‘CabRadio’ subsystem provides the cab radio functionality and consists of all packages, except ‘SoftwareAdministration’, and all interfaces, as detailed below.

The ‘CabRadioAdmin’ subsystem provides cab radio software administration, which includes software upgrades and version control. It consists of the following packages:

• SoftwareAdministration.

• PMUInterface.

• FileHandler.

• TCPInterface.

The CabRadioAdmin subsystem was conceived to allow the PMU to interrogate and have executive control of the Cab Radio software at all times, even if the cab radio software is a failed state.

4.4 CONTROL OF EXTERNAL INTERFACES

In addition to the SSFS functional areas the following additional UML packages have been defined to handle the interfaces to external entities:

• Human Machine Interface.

• Digital Interface.

• GSM-R Interface.

• PMU Interface.

• TBR Interface.

• TCP Interface.


666/HH/86219/000 Issue 1.0 Page 39

4.5 HUMAN MACHINE INTERFACE

The Human Machine Interface (HMI) is a bi-directional interface responsible for the communication between the GSM-R Cab Radio and the Cab Radio Control Panel.

The HMI also performs the audio indications to the operator via the Loudspeaker and Handset.

4.6 DIGITAL INTERFACE

The Digital Interface is a bi-directional interface which allows the detection of the following external events, by the monitoring of a number of memory mapped addresses. Each of the external interfaces identified can be monitored.

4.7 GSM-R INTERFACE

The GSM-R Interface is a bi-directional interface responsible for sending and receiving AT (ATtention) style Hayes commands to the GSM-R Radio MT. The AT commands supported by the GSM-R Radio MT are in accordance with GSM 07.07 and GSM 07.05.

4.8 PMU INTERFACE

The PMU interface is a bi-directional interface responsible for allowing GSM-R Cab Radio maintenance. The interface allows a PMU operator to perform diagnostics functions and also to re-configure various parameters and update databases on the GSM-R Cab Radio.

The Cab Mobile application can be downloaded into the radio using the PMU.

4.9 TCP INTERFACE

The TCP interface is a bi-directional interface that is responsible for the communication between the GSM-R Cab Radio and the PMU. It also allows communication between the GSM-R Cab Radio and any other future equipment that utilises the TCP/IP protocol stack.


666/HH/86219/000 Issue 1.0 Page 40

APPROVALS


666/HH/86219/000 Issue 1.0 Page 41

5 Approvals

5.1 ENVIRONEMENTAL PERFORMANCE

The Cab Radio equipment is designed such that it meets or exceeds the following Environmental performance requirements:

Test Description Test Specification Performance Requirements

Vibration Random EN 50155, Section 10.2.11

(Random vibration functional and

simulated long life tests)

Continuous Sine

EN 60068-2-6 Test Fc

Continuous Sine

EN 60068-2-6 Test Fc

Random Vibration Functional: -

As required by EN 61373 Section 9.1, body mounted, class B2.5m/s2 in all three planes. EUT functioning.

Simulated Long Life Random: -

As required by EN 61373 Section 9.1, body mounted, class B. EUT off during test.

5 – 10 Hz 7.5mm

10 – 200 Hz 1.5g

[Antenna: -

5 – 16 Hz 5mm

16 – 1000 Hz 2.5g]

Endurance by sweeping: 5hrs in all three planes.

Vibration response investigation followed by 30 mins.

endurance at critical frequencies.

Shock EN 50155, Section 10.2.11 In accordance with EN 61373.

Drop Test EN 60068-2-31 Test Ec Distance to test surface 0.5 metres

Drop (Free Fall ) EN 60068-2-32 Test Ed Free fall from 0.5 metre

High Temperature (operational)

BS EN 60068-2-2 Test BdEN50155, Section 10.2.4

+70°C (Note a version of the Cab Radio Assembly, with no external fan unit, will operate at maximum 55°C).

Low Temperature (operational)

BS EN 60068-2-1 Test AdEN50155, Section 10.2.3

-20°C

Max Temperature

Antenna Only (operational)

Designed to specification but not tested

+70°C

Low Temperature, Antenna Only (operational)


-40°C

Change of Temperature (all equipment, operational)

EN60068-2-14 Test N 1°C/min., 2 cycles

Change of Temperature, Antennas (operational)


3°C/sec.


666/HH/86219/000 Issue 1.0 Page 42

Storage Low Temperature (all equipment)

Designed to specification but not tested. EN50155, Section 10.2.14

-40°C

Storage High Temperature (all equipment)

As EN50155, Section 10.2.14 +85°C

Damp Heat EN 50155 Section 10.2.5

(EN 60068-2-30 Test Db)

As defined in EN 50155 95% RH

Ingress of Water & Dust Protection

EN 60529:19912 IP54 (Cab Radio, Control Panel and UPS).

Salt Mist Test EN50155 Section 10.2.10 Class ST2 (16 hours)

Pressure (Antennas)

No specification defined. Able to withstand: -

Pressure pulses of up to 6kPa (pk to pk) for up to 3 Sec. Pressure gradients of up to 100kPa/sec.

Altitude Low Air Pressure

EN 60068-2-13 Test M -100m to +1800m ref. sea level800mbar for 16 hours

Table 3 - Environmental standards

5.2 EMC

The UK Cab Radio Equipment is designed to comply with the requirements of the European Commission’s R&TTE Directive (1999/5/EC), and specific project requirements, by conformance to the following EMC performance requirements.

Test Description Test Specification

RF Emissions EN 50121-3-2:2000

Conducted Emissions EN 50121-3-2:2000

Transient Bursts EN 50121-3-2:2000

Voltage Transients and Surges*

PrEN 50121-3-255:2000

RIA 121999

RF Field Immunity EN 50121-3-2:2000

EN301 489-1

Electrostatic Discharge EN 50121-3-2:2000

Variations & interruptions of voltage supply*

EN 50121-3-2:2000

Table 4 - EMC performance

* The MMI does not need to comply with these tests, as it is powered from the Cab Radio, not from the Train power supply.

5.3 SAFETY TESTING

The UK Cab Radio Equipment is designed for compliance with the requirements of the European Commission’s Low Voltage Directive (73/23/EEC) and R&TTE Directive (1999/5/EC) via its compliance with all applicable requirements of EN60950.


666/HH/86219/000 Issue 1.0 Page 43

5.4 EIRENE APPROVAL

The UK Cab Radio is subject to the EIRENE approvals process and is to be certified

against Eirene FRS v6.0 and Eirene SRS v14.0.

5.5 BANNED/ TOXIC MATERIALS

The use of materials which could pose a health and safety risk, either under normal

or abnormal conditions, has been carefully controlled during the design of the UK

Cab Radio equipment.

The Cab Radio equipment does not contain any of the following materials:

• Asbestos.

• Mineral Wool.

• Ceramic Fibres.

• Lead Chromate (or compounds thereof).

• Zinc Chromate (or compounds thereof).

• Cadmium (or compounds thereof).

• Mercury (or compounds thereof).

• PCBs (Polychlorinated Biphenyls).

• CFCs (Chlorofluorocarbon).

• PAK (Polyester Alkyd).

• Halons (or Halogenated Hydrocarbons).

gsm-r tech handbook

Documents

gsmr cab radio equipment

gsmr cab radio enclosure

cab radio voice equipment

gsmr roofmounted antenna

equipment operators

performance safety

hazardous voltages

train roof