1、 TERRESTRIAL FLIGHT TELEPHONESYSTEM (TFTS) AIRBORNE RADIOSUBSYSTEMARINC CHARACTERISTIC 752-1PUBLISHED: DECEMBER 11, 1995AN DOCUMENTPrepared byAIRLINES ELECTRONIC ENGINEERING COMMITTEEPublished byAERONAUTICAL RADIO, INC.2551 RIVA ROAD, ANNAPOLIS, MARYLAND 21401This document is based on material submi
2、tted by variousparticipants during the drafting process. Neither AEEC norARINC has made any determination whether these materials couldbe subject to valid claims of patent, copyright or other proprietaryrights by third parties, and no representation or warranty, expressor implied, is made in this re
3、gard. Any use of or reliance on thisdocument shall constitute an acceptance thereof “as is” and besubject to this disclaimer.Copyright 2000 byAERONAUTICAL RADIO, INC.2551 Riva RoadAnnapolis, Maryland 21401-7465 USAARINC CHARACTERISTIC 752-1NETWORK SERVER SYSTEMPublished: December 15, 1995Prepared by
4、 the Airlines Electronic Engineering CommitteeCharacteristic 752 Adopted by the Airlines Electronic Engineering Committee: November 5, 1992Characteristic 752 Adopted by the Industry: January 15, 1993Summary of Document SupplementsSupplement Adoption Date PublishedCharacteristic 752-1 January 15, 199
5、3 December 11, 1995A description of the changes introduced by each Supplement is included on goldenrod paper at the end of thisdocument.iiFOREWORDActivities of AERONAUTICAL RADIO, INC. (ARINC)and thePurpose of ARINC CharacteristicsAeronautical Radio, Inc. is a corporation in which the United States
6、scheduled airlines are theprincipal stockholders. Other stockholders include a variety of other air transport companies, aircraftmanufacturers and non-U.S. airlines.Activities of ARINC include the operation of an extensive system of domestic and overseasaeronautical land radio stations, the fulfillm
7、ent of systems requirements to accomplish ground andairborne compatibility, the allocation and assignment of frequencies to meet those needs, thecoordination incident to standard airborne communications and electronics systems and the exchange oftechnical information. ARINC sponsors the Airlines Ele
8、ctronic Engineering Committee (AEEC),composed of airline technical personnel. The AEEC formulates standards for electronic equipment andsystems for the airlines. The establishment of Equipment Characteristics is a principal function of thisCommittee.An ARINC Equipment Characteristic is finalized aft
9、er investigation and coordination with theairlines who have a requirement or anticipate a requirement, with other aircraft operators, with theMilitary services having similar requirements, and with the equipment manufacturers. It is released as anARINC Equipment Characteristic only when the interest
10、ed airline companies are in general agreement. Such a release does not commit any airline or ARINC to purchase equipment so described nor does itestablish or indicate recognition of the existence of an operational requirement for such equipment, notdoes it constitute endorsement of any manufacturers
11、 product designed or built to meet theCharacteristic. An ARINC Characteristic has a twofold purpose, which is:(1) To indicate to the prospective manufacturers of airline electronic equipment theconsidered opinion of the airline technical people, coordinated on an industry basis,concerning requisites
12、 of new equipment, and(2) To channel new equipment designs in a direction which can result in the maximumpossible standardization of those physical and electrical characteristics which influenceinterchangeability of equipment without seriously hampering engineering initiative.iARINC CHARACTERISTIC 7
13、52TABLE OF CONTENTSITEM SUBJECT PAGE1.0 INTRODUCTION AND DESCRIPTION 11.1 Purpose of this Characteristic 11.2 Related Documents 11.3 Function of Equipment 11.4 Airborne Avionics Configurations 11.5 Unit Descriptions 21.5.1 MODEM Processor Unit 21.5.2 Transmitter Receiver 21.5.3 Diplexer 21.5.4 Anten
14、na 21.5.5 Control Panel 21.6 Interchangeability 21.7 Regulatory Approval 21.8 Conformance Testing 22.0 INTERCHANGEABILITY STANDARDS 32.1 Introduction 32.2 Form Factors, Connectors and Indexing 32.2.1 MPU 32.2.2 T/R 32.2.3 Diplexer 32.2.4 Antenna 32.2.5 Control Panel 32.3 Interwiring 32.4 Power Circu
15、itry 32.4.1 Primary Power Input 32.4.2 Power Control Circuitry 32.5 Environmental Conditions 32.6 Cooling 42.6.1 Installation 42.6.2 T/R 42.6.3 MPU 42.7 Grounding and Bonding 43.0 INTERFACING REQUIREMENTS 53.1 CTU to MPU Interfaces 53.2 MPU to T/R Interfaces 53.3 MPU to Aircraft Subsystem Interfaces
16、 53.3.1 MPU Disable 53.3.2 BITE 53.3.3 Data Loader 53.4 MPU to CP 53.4.1 MPU Disable 53.4.2 BITE Initiate 53.4.3 BITE Display 53.5 Transmitter Receiver to Diplexer Interfaces 53.6 Diplexer to Antenna Interfaces 54.0 RADIO SUBSYSTEM DESIGN 64.1 General 64.2 Software Loading 65.0 DIPLEXER DESIGN 75.1
17、General 75.2 Passband Frequencies 75.3 Insertion Loss 75.4 Return Loss 75.5 Rejection 75.5.1 Channel 1 to Antenna 75.5.2 Channel 2 to Antenna 75.5.3 Channel 3 to Antenna 75.6 Power Handling 7iiARINC CHARACTERISTIC 752TABLE OF CONTENTSITEM SUBJECT PAGE6.0 ANTENNA DESIGN 86.1 Antenna Performance Chara
18、cteristics 86.1.1 Impedance and VSWR 86.1.2 Gain and Polarisation 86.1.3 Frequency Coverage 86.1.4 Power Rating 86.2 Installed Antenna and Transmission Line Subsystem 86.2.1 Impedance and VSWR 86.2.2 Antenna Isolation 86.3 Physical Configuration 86.4 Finish 87.0 BUILT-IN TEST EQUIPMENT 97.1 OMS Memb
19、er System BITE 97.2 Non-member System BITE 97.3 Diplexer and Antenna BITE 9ATTACHMENTS1-1 Standard Interwiring 10-151-2 Antenna 161-3 Diplexer 171-4 Environmental Test Categories 181-5 Antenna Gain Mask 19APPENDICES1-1 System Description 20-24ARINC CHARACTERISTIC 752 Page 11.0 INTRODUCTION AND DESCR
20、IPTION1.1 Purpose of this CharacteristicThis document defines the desired Characteristics of theTerrestrial Flight Telephone System (TFTS) for all types ofcommercial transport aircraft. The intent of this documentis to provide guidance on the form, fit and function for theinstallation of the airborn
21、e radio sub-system MPU,Transmitter-Receiver (T/R), diplexer and antenna. It alsoprovides functional and interfacing guidelines with theobjective of ensuring that compliant equipment willconform to the European Telecommunications Standard(ETS) 300-326 for the signal in space and groundenvironments.CO
22、MMENTARYEquipment manufacturers should note that thisdocument encourages them to produce highly reliableequipment rather than that of minimum weight andsize. They are at liberty to accomplish this objectiveby means of the techniques considered mostappropriate. Airline customers are interestedprimari
23、ly in the end rather than the means.Manufacturers should note that although thisCharacteristic does not preclude the use of standardsdifferent from those set out herein, the practical problemsof redesigning a standard airframe installation toaccommodate a special equipment could very well makethe us
24、e of that equipment prohibitively expensive for thatcustomer. They should recognize, therefore, the practicaladvantages of developing equipment in accordance withthe standards set forth in this document.COMMENTARYThis Characteristic has been written assuming thattransmission and reception of the sig
25、nal in space istransmitted at L Band frequencies, specifically in therange 1670 to 1675MHz (Ground to Air) and 1800 to1805MHz (Air to Ground).Aircraft altitude information is required for activeradio cell management. The ETSI standard states,“An Aircraft Station AS should not select orcontinue to us
26、e an En-Route (ER) or Intermediate(INT) Ground Station (GS) if the aircraft altitude isgreater than the MAXALT. If altitude information isnot available, the AS should only use an ER or INTGS if its MAXALT is greater than or equal to 40,000feet.” The upper limit for MAXALT available at thetwo types o
27、f GS are ER greater than or equal to 43,000feet and INT equal to 15,500 feet.1.2 Related DocumentsThe latest revision of the following documents arepertinent to the design of equipment intended to meet thisstandard.ARINC Report 413A, “Guidance for Electrical PowerUtilization and Transient Protection
28、”ARINC Specification 429, “Mark 33 Digital InformationTransfer System (DITS)”ARINC Specification 600, “Air Transport AvionicsEquipment Interfaces”ARINC Report 609, “Design Guidance for AircraftElectrical Powers Systems”ARINC Report 615, “Airborne Computer High Speed DataLoader”ARINC Report 624, “Onb
29、oard Maintenance System”ARINC Characteristic 741, “Aviation SatelliteCommunication System”ARINC Characteristic 746, “Cabin CommunicationsSystem”ATA 100, “Specification for Manufacturers” TechnicalData”ETSIprETS 300 326-1, “Radio Equipment and Systems(RES); Terrestrial Flight Telecommunications Syste
30、m(TFTS); Part 1: Speech Services, Facilities andRequirements”ETSIprETS 300 326-2, “Radio Equipment and Systems(RES); Terrestrial Flight Telecommunications System(TFTS); Part 2: Speech Services, Radio Interface”ETSIprETS 300 326-3, “Radio Equipment and Systems(RES); Terrestrial Flight Telecommunicati
31、ons Systems(TFTS); Part 1: Speech Services, Network Aspects”EUROCAE ED-14, “Environmental Conditions and TestProcedures for Airborne Equipment”RTCA/DO-160, “Environmental Conditions and TestProcedures for Airborne Equipment”1.3 Function of EquipmentThe prime function of TFTS is to provide a telephon
32、eservice (aeronautical passenger communications) to airlinepassengers and perhaps Airline OperationalCommunication (AOC) and Airline AdministrativeCommunications (AAC) through a network of groundstations distributed throughout Europe. In addition totelephone service, non voice services should be mad
33、eavailable. The primary means of charging the passenger isthrough a credit card, which is read by the cabin terminalequipment prior to the call being connected. Alternativemeans of call billing may be arranged between the aircraftoperator and the service provider. This Characteristicaddresses the re
34、quirements for the airborne equipment inorder to allow a common aircraft installation.1.4 Airborne Avionics ConfigurationsThe airborne subsystem is modular in form, providingcommunications capacity in blocks of four circuits.COMMENTARYA large, wide bodied aircraft may require two blockswhile a small
35、er aircraft may need only one. Theequipment fit should consist of:c-1c-1c-1ARINC CHARACTERISTIC 752 Page 21.0 INTRODUCTION AND DESCRIPTION1.4 Airborne Avionics Configurations (contd)UNIT QUANTITY4 Circuit 8 CircuitAntennaDiplexer 1 2T/R 1 2MPU 1 2Control Panel 1 1CTU 1 1Handsets as requiredCOMMENTAR
36、YThe capacity referred to above assumes the use of a9.6 kbps Codec. When a suitably approved 4.8 kbpsCodec becomes available the traffic capacity of theTFTS system may be increased and ultimatelydoubled.The control panel is an optional item, to be fitted atthe discretion of the individual airline. T
37、he CabinCommunications Unit (CCU) and handsets aredescribed in ARINC Characteristic 746.1.5 Unit Descriptions1.5.1 Modem Processor UnitThe Modem Processor Unit (MPU), which includes theCodecs, provides two important functions to the system. The first is the modulation and demodulation of the signali
38、n space, and the second is the hosting of the softwarethat automatically selects the ground station andmaintains the radio connection for the duration of the call.1.5.2 Transmitter ReceiverThe Transmitter Receiver (T/R) is a full duplex radiooperating in the band allocated to the TFTS, 1670 to 1675M
39、Hz (receive) and 1800 to 1805 MHz (transmit). The T/Rincludes a second receiver that monitors other groundstations to provide information that can be used to makedecisions concerning handover and other network issues.1.5.3 DiplexerThe diplexer is a passive device connected between theT/R and the ant
40、enna. It combines the transmitter outputof the radio with the receiver input such that a commonantenna can be utilized. It provides filtering to protect thereceiver from its own transmissions and to minimizeinterference to and from other equipment on the aircraft.1.5.4 AntennaThe antenna is a small
41、aerodynamic blade providingpredominantly vertical polarization over an omnidirectionalpolar diagram. It is designed to use the footprint asshown in Attachment 1-2.1.5.5 Control PanelThe Control Panel (CP) is an optional item providing selftest facilities (BITE initiate and display) and the MPUdisabl
42、e function.1.6 InterchangeabilityThe interchangeability objectives are such that equipmentfrom any source should be able to fit into the standardinterwiring. It is not required, however, that a T/R fromone manufacturer will operate with an MPU from another.1.7 Regulatory ApprovalThe TFTS equipment s
43、hould meet the applicableregulatory approval requirements as defined by theappropriate National Regulatory Authority (e.g., UKCAA). This is not within the scope of this Characteristic.COMMENTARYSince the TFTS equipment is not classed as essentialavionics equipment and its interface with other onboar
44、d systems is likely to be minimal, the approvalrequirements are likely to be less onerous than foressential avionics equipment.1.8 Conformance TestingAs a telecommunications system having to interwork withpublic European telecommunications networks, the TFTSequipment should meet the conformance test
45、ingrequirements expressed in ETS ESTI ETS XXX YYY.COMMENTARYThe essential elements include the following aspects:a. User safety.b. Safety of Telecommunications Operators.c. Electromagnetic compatible.d. Protection of the public networks from harm.e. Effective use of the radio spectrum.f. Interworkin
46、g of terminal equipment with TFTSground equipment and protocol testing.g. Interworking of terminal equipment with thepublic networks.c-1c-1c-1ARINC CHARACTERISTIC 752 Page 32.0 INTERCHANGEABILITY STANDARDS2.1 IntroductionThis section defines the specific form factor, mountingprovisions, interwiring,
47、 input and output interfaces andpower supply characteristics desired for the TFTS airborneequipment. These standards will permit the parallel butindependent design of compatible equipment and airframeinstallations.Refer to ARINC Specification 600, “Air TransportAvionics Equipment Interfaces” for det
48、ailed information onselected form factors, connectors etc. ARINC 600 alsoapplies to weight, racking attachments, front and rearprojections and cooling.2.2 Form Factors, Connectors and Indexing2.2.1 Modem Processor Unit (MPU)The MPU should comply with the dimensional standardsestablished in ARINC Spe
49、cification 600 for the 4 MCUform factor. The unit should also comply with ARINC 600standards regarding front and rear projections, weight andcenter of gravity limits and mechanical deformationresulting from rack insertion.The MPU should be provided with a low insertion forcesize 2 shell ARINC 600 service connector, mounted in thelocation specified in ARINC 600.The MPU connector pin arrangements should be as definedin Attachment 1-1. Contact Arrangement 25 should beused. Index pin code 09 should be used.2.2.2 Transmitter/Receiver (T/R)The T/R should comply with the dimensional s
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