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DVOR 432

Preliminary Remarks

Operation and Maintenance

B

Ed. 01.04

Table of effective pages

Basic edition: 01.02 / Revised edition: 01.04

Pages

Ed.-No.

Remarks

Title

01.04

A to B

01.04

I to X

01.04

AV-1 to 16

01.04

1-1 to 10

01.04

2-1 to 46

01.04

3-1 to 16

01.04

4-1 to 3201.04

5-1 to 14

01.04

6-1 to 36

01.04

Annex

01.04

DVOR Nextfield (optional)

Trademarks:

Microsoft and MS-DOS are registered trademarks, WINDOWS is a trademark of the Microsoft Corporation. IBM is a registered trademark of the International

Business Corporation. Pentium



is a registered trademark of the Intel Corporation. All other mentioned product names may be trademarks of the respective

manufacturers and must be observed.

Note

Despite of careful editing work technical inaccuracies and printing faults cannot be excluded in this publication. Change of text remains reserved without notification.

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Summary of Contents for DVOR 432

Page 1: ... DVOR 432 Technical Manual As for details the electrical and mechanical information given in the documentation supplied with each equipment prevails Part 2 All rights reserved E 2004 Thales ATM GmbH Stuttgart Printed in Germany VHF Omnidirectional Radio Range ...

Page 2: ......

Page 3: ... Delivery List Parts List Schematic diagrams and Layout Drawings 83051 48620 B Delivery List Parts List Schematic diagrams and Layout Drawings 83051 48620 C Delivery List Parts List Schematic diagrams and Layout Drawings 83051 48620 Nextfield option A Delivery List Parts List Schematic diagrams and Layout Drawings 83051 48640 B Delivery List Parts List Schematic diagrams and Layout Drawings 83051 ...

Page 4: ......

Page 5: ...dimensioning in the interests of technical progress in the Technical Manual we should point out that questions of detail should always be answered using the technical documentation supplied with the system It is possible that reference numbers of drawings or subassemblies used in this descripĆ tion are no longer contained in the set of drawings supplied Volume A to C but rather than to conĆ form w...

Page 6: ...ld optional Trademarks Microsoft and MS DOS are registered trademarks WINDOWS is a trademark of the Microsoft Corporation IBM is a registered trademark of the International Business Corporation Pentium is a registered trademark of the Intel Corporation All other mentioned product names may be trademarks of the respective manufacturers and must be observed Note Despite of careful editing work techn...

Page 7: ...ECOMMENDED INSTRUMENTS AND ACCESSORIES 1 7 CHAPTER 2 INSTALLATION 2 1 2 1 SELECTING THE INSTALLATION SITE 2 1 2 2 FOUNDATIONS FOR DVOR COUNTERPOISE AND SHELTER 2 2 2 3 DVOR CONTAINER SHELTER 2 5 2 3 1 General 2 5 2 3 2 Transportation and Installation of the Container Shelter 2 5 2 4 INSTALLATION OF THE DVOR ANTENNAS 2 7 2 4 1 General 2 7 2 4 1 1 Prerequisites 2 7 2 4 2 Antenna mounting 2 8 2 4 2 1...

Page 8: ...as 2 23 2 5 4 External Interface Connection 2 25 2 5 4 1 DME IDENT 2 25 2 5 4 2 DIAGNOSIS 2 25 2 5 4 3 LGM1 2 25 2 5 4 4 LGM2 DME 2 26 2 5 4 5 LGM3 NDB 2 26 2 5 4 6 ANALOG 2 27 2 5 4 7 Local PC 2 27 2 5 4 8 VAM 2 27 2 5 4 9 OIO LCP IN 2 27 2 5 4 10 OIO LCP OUT 2 28 2 5 5 External Interfaces Cable Connections 2 29 2 5 5 1 Connection of Remote Control RMMC 2 29 2 5 5 2 Connection of a local PC or La...

Page 9: ...6 CHAPTER 3 OPERATION 3 1 3 1 GENERAL 3 1 3 2 LOCAL CONTROL INTERFACE 3 1 3 2 1 Indication Lamps for Main Status 3 2 3 2 2 Liquid Crystal Display Screen for Indication and Control of the System 3 2 3 2 2 1 General Structure 3 2 3 2 2 2 Welcome Window 3 4 3 2 2 3 System Status Windows 3 4 3 2 2 4 System Control Windows 3 8 3 2 2 5 System DATA Window 3 10 3 2 2 6 MENU LIST Window 3 11 3 2 3 Key lock...

Page 10: ...HE POWER CHAPTER 5 MAINTENANCE 5 1 5 1 GENERAL 5 1 5 2 PERIODIC MAINTENANCE 5 1 5 2 1 Elimination of Static Charges 5 2 5 2 2 Damage check 5 2 5 2 3 Cleaning 5 2 5 2 4 Documentation of System Data 5 3 5 3 NORMAL MAINTENANCE 5 4 5 3 1 Replacing the Lithium Batteries MSP C MSP VD LCP 5 4 5 3 2 Maintaining Emergency Battery 5 5 5 3 2 1 Battery Voltage 5 5 5 3 3 Matching the Charging Voltage of BCPS M...

Page 11: ...not for maintenance free batteries 5 14 5 4 2 1 4 Measuring the Cell Voltage 5 14 CHAPTER 6 FAULT LOCATION AND REPAIR 6 1 6 1 FAULT LOCATION 6 1 6 1 1 General 6 1 6 1 2 Fault Evaluation with PC and ADRACS 6 1 6 1 3 Fault Location Support DVOR 50 W and 100 W 6 1 6 1 3 1 Power Supply and Module Indicators 6 1 6 1 3 2 Localization of the defective Equipment Part 1 6 2 6 1 3 3 Status Check of the Micr...

Page 12: ...1 Failure in the Monitor Processor 6 15 6 2 2 2 Failure in the Transmitter Processor 6 15 6 2 3 Replacing Subassemblies 6 17 6 2 3 1 Disconnecting the Voltage before replacing Subassemblies 6 17 6 2 3 2 Subassemblies in the Transmitter Rack and Power Supply 6 17 6 2 3 2 1 Replacing EPROM 6 19 6 2 3 2 2 Creating new Checksum for MSP EPROM in ADRACS 6 19 6 2 3 2 3 Replace and Reconfigure Subassembly...

Page 13: ...1 Installation direction of vertical pipe and antenna dome 2 9 Fig 2 12 Spacing of vertical pipes of sideband antenna 2 10 Fig 2 13 Antenna ring single antenna and vertical pipe 2 10 Fig 2 14 Connection diagram of individual radiators of the sideband antennas 2 11 Fig 2 15 Sideband antenna with matcher decoupling module pulled out 2 11 e g antenna 2 Fig 2 16 Cabling of sideband antenna 2 12 Fig 2 ...

Page 14: ...de connection 2 42 DVOR to DME Fig 2 41 IOM Version connector panel at cabinet rear side ident connection 2 42 DVOR DME Fig 2 42 IOM Version connector panel at cabinet rear side RS 232 connection 2 42 DVOR DME Fig 2 43 Cable connections to DVOR and DME FSD 40 45 2 43 DME with individual internal or external modem for RC connection Fig 2 44 Cable connections to DVOR and DME 415 435 2 43 DME with in...

Page 15: ...rack 1 3 14 Fig 3 16 Push buttons and indications on the subassemblies inside the rack 2 3 15 Fig 4 1 Setting characteristics for DVOR antenna 4 27 Fig 4 2 Position of capacitors CA CTr antenna dome C5 4 27 matcher decoupling module Fig 4 3 Test setup for matching measurements for DVOR antenna 4 28 Fig 4 4 Simulator test setup for DVOR 4 28 Fig 4 5 Transmitter rack rear side potentiometers on CCP ...

Page 16: ...DVOR 432 Table of Contents Operation and Maintenance X Ed 01 04 ...

Page 17: ...Sous système convertisseur analogique numérique Subsistema convertidor analógico digital ADR Analog Display Routine Routine affichage analogique Rutina de indicator analógico ADRACS Automatic Data Recording And Control System ADSB Alternating Double Sideband Bande latérale double alternante Banda lateral doble alternante ADU Antenna Distribution Unit Antennen Verteileinheit Ensemble de distributio...

Page 18: ...ad de conmutación de antena ATC Air Traffic Control Contrôle du trafic aérien Control del tráfico aéreo ATIS Air Traffic Information System Système d informations du trafic aérien Sistema de informaciones del tráfico aéreo ATM Air Traffic Management AWD Automatische Wähleinrichtung für Datenverbindungen Automatic dialling equipment for data connections Dispositif automatique de sélection pour liai...

Page 19: ...BSG D Blending Signal Generator Générateur de signaux de transition Generador de señal de transición BST Baustahl Structure steel Acier de construction Acero de construcción BUSGNT Bus Grant Autorisation de bus Autorización de bus BUSRQ Bus Request Demande de bus Solicitud de bus CA Carrier Amplifier CAB Cabinet Armoire Armario CAT Category Kategorie Category Categoría CCA Circuit Card Assembly Ba...

Page 20: ...co CONC Phone Concentrator Telefon Umschalteinrichtung Installation de commutation téléphonique Centralilla teléfonica CPU Central Processing Unit Zentrale Prozessoreinheit CR Carriage Return Retour du chariot Retorno de carro CRC Cyclic Redundancy Check CRT Cathode Ray Tube Tube cathodique Tubo catódico CRS CS Course signal Kurssignal Signal de directif Señal de rumbo CSB 1 Carrier signal with Si...

Page 21: ... DC Converter Multivolt Doppler Convertisseur CC Multivolt Doppler Convertidor CC Multivolt Doppler DDM Difference in Depth of Modulation Differenz der Modulationsgrade Différence de taux de modulation Diferencia de grados de modulación DDS Direct Digital Synthesis DFS Deutsche Flugsicherung Administration of air navigation services Bureau de la sécurité aérienne Instituto de protección de vuelo D...

Page 22: ...lectrically Erasable Programmable Read Only Memory Mémoire à lecture seule programmable et erasable électrique Memoria permanente borrable eléctricamente y programada EMC Electromagnetic Compatibility Elektromagnetische Verträglichkeit ENBT Enable Bus Transfer Validation transfert de bus Conexión transferencia de bus EPLD Electrically Programmable Logic Device Elektrisch programmierbare Schaltungs...

Page 23: ...lide Slope Glide Path Gleitweg Radiophare d alignement de descente Transmisor de trayectoria de descenso HF Hochfrequenz Radio frequency Haute fréquence Alta frecuencia IC Integrated Circuit Integrierter Schaltkreis Circuit intégré Circuito integrado ICAO International Civil Aviation Organization Organisation de l aviation civile internationale OACI Organización de aviación civil international OAC...

Page 24: ...able adapter Adaptateur de cable Adaptador de cable LCC Local Communication Control LCD Liquid Crystal Display Ecran à cristaux liquides Indicador de cristal liquido LCI Local Control Interface Interface de commande locale LCP Local Control Panel Panneau de commande locale LCSU Local Control and Status Unit LCU Local Communication Unit LED Light Emitting Diode Diode électroluminiscente Diodo elect...

Page 25: ... extension Fuente de alimentación suplementaria de la radiobaliza MIA Monitor Interface Adapter Adapteur d interface du moniteur Adaptador de la interfase de monitor MIB Monitor Interface Board Platine d interface du moniteur Placa enchufable de la interfase de monitor MLS Microwave Landing System Système d atterrissage aux micro ondes Sistema de aterrizaje por microondas MM Middle Marker Radiobal...

Page 26: ...ón MSP Monitor Signal Processor Processeur de signaux de moniteur Procesador de señal de monitor MSR Monitor Service Routine Routine de service de moniteur Rutina de servicio de monitor MTBF Meantime between Failures Temps moyen entre défauts Tiempo medio entre fallos MTTR Meantime to Repair Temps moyen de réparation Tiempo medio de reparacion MUX Multiplexer Multiplexeur Multiplexor MV Multivolt ...

Page 27: ... adaptador optoacoplador OACI Organisation de l aviation civile internationale ICAO International Civil Aviation Organization Organización de aviación civil international OIO Opto Coupler Isolated Input Output OM Outer Marker Radiobalise extérieure Radiobaliza exterior PC Personal Computer PCB Printed Circuit Board Carte à circuit imprimé Tarjeta de circuito impreso PDME Precision DME DME de préci...

Page 28: ...e protection Unidad de protección PS Power Supply Bloc d alimentation Equipo de alimentación PSI Power Supply Interface Interface du bloc d alimentation Interfase equipo de alimentación PSS Power Supply Switch PSW Interrupteur de puissance Interruptor de alimentación PSN Position Position Axe Posición PSTN Public Switched Telephone Network PTT Post Telephone and Telecommunications Authority PVC Po...

Page 29: ...lemando RIAX Remote Interface Adapter extended Adaptateur d interface de télécommande étendé Adaptador suplementario de interfase telemando RISC Reduced Instruction Set Computing Rechner mit reduziertem Befehlssatz RL Radio link Richtfunkverbindung Liaison hetzienne Radioenlace dirigido RMMC Remote Monitoring and Maintenance Configuration ROM Read Only Memory Mémoire à lecture seule Memoria perman...

Page 30: ...es latérales A utilizé en VOR Banda lateral A utilizado para VOR SBB Sideband B used in VOR Bandes latérales B utilizé en VOR Banda lateral B utilizado para VOR SBO Sideband Only Bandes latérales seulement Banda lateral solamente SBR Subrack Sous bâti Subrack con junto SCC Serial Communication Controller SDM Sum of Depths of Modulation Somme des taux de modulation Suma de grado de modulación SMA S...

Page 31: ...peratur kompensierter Quarzoszillator Oscillateur à quartz compensé par témperature Oscilador de cuarzo termo compensado TEG Test Generator Générateur de test Generador de test THR Threshold Schwellwert Valeur de seuil Nivel determinado TNC Threaded Navy Connector Koaxialverbinder mit Gewindekupplung TNV Telephone Network Voltage TOR Time Out Routine Routine de temps de suspension Rutina de tiempo...

Page 32: ...al VCO Voltage Controlled Oscillator VGA Video Graphic Adapter VHF Very High Frequency Hyperfréquence Hiperfrecuencia VOR Very High Frequency Omnidirectional Radio Range Radiophare omnidirectionnel VHF Radiofaro omnidireccional VHF VSWR Voltage Standing Wave Ratio Taux d ondulation Grado de ondulación VTOL Vertical Take off and Landing Décollage et atterrissage verticaux Despegue y aterrizaje vert...

Page 33: ...75 28159 58300 34010 3000 x 2440 x 2440 2 500 Fig 1 1 DVOR in 10 ft container shelter for all types of transport PackĆ age Contents Code No Dimensions with packaging mm Gross weight kg 1 1 Cabinet DVOR equipped 50 W dual or single or 100 W dual or single 83011 40300 40350 83011 40400 40450 1940 x 830 x 880 1980 x 880 x 890 approx 279 approx 323 2 1 Antenna Switching Unit ASU equipped 83135 10400 1...

Page 34: ...5 Remove the screws and washers and the upper support angles left and right Tilt the transmitter cabinet Fig 1 3 6 forward slightly hold it and dismantle the lower support angle Fig 1 3 3 Then carry the transmitter cabinet to its point of installation and screw to the floor Open the front door and remove the foam panel behind it Close the front door Store away all despatch packaging Fig 1 3 so tha...

Page 35: ...d on top of the crates see Fig 1 4 The antenna bases vertical pipes and decoupling modules are packed separately The supply and installation of the DVOR counterpoise is not discussed in this description Warning label for sticking on crate Reinforcement 2 wedge shaped cushions with reinforcement Pallet underneath Labels Position of central padding in the center of 4 interior surfaces Dispatch boxes...

Page 36: ... chisels and punches in good time Test striking tools for tightness of fit Do not put pointed or sharp objects into working clothing pockets Jewelry such as chains and rings should be removed when working on building sites especially when working with electrical devices Always keep escape routes clear Every employee on an installation site should know S where the First Aid box is kept S the teleph...

Page 37: ... required to unpack and assemble the equipment and the antenna system not including the DME or the TACAN 1 crane truck lifting capacity 500 kg min jib reach 3 m lifting height approx 2 m above the counterpoise 1 Engineer s hammer 200 g 1 engineer s hammer 1000 g 1 Crowbar for opening crates 1 Impact drill min power 600 W 1 Set fork spanners 6 to 32 mm 1 Set ring spanners 6 to 32 mm 1 Set of socket...

Page 38: ...DVOR 432 General Information Operation and Maintenance 1 6 Ed 01 04 ...

Page 39: ...lation maintenance and trouble shooting of navigation equipment or at least will make the work easier This equipment or that with comparable characterisĆ tics is normally present at the site If not it can be supplied optionally by Thales ATM A selection of necessary equipment and accessories to be provided can be defined in consultation with Thales ATM For the appropriate works e g for startup the...

Page 40: ...DVOR 432 General Information Operation and Maintenance 1 8 Ed 01 04 ...

Page 41: ... Bird 275 450 MHz x x x Measuring element 1 W 9799128193 275 1 Bird 100 250 MHz x Measuring element 5 W 9799128041 5 C Bird 100 250 MHz x x Measuring element 100 W 9799128182 100 C Bird 100 250 MHz x x Directionalcoupler 9799128273 HP 778 D x x x Terminatingresistor 9799128274 HP 8491 A 30 dB opt 30 x x x Attenuator 100 W 30 dB 9749928007 50 Ohm BN745395 x x x 3 dB coupler 4990123002 CH 132 M SMA ...

Page 42: ...728803886 SMA N RG400 x AF cable 3 m 2402928218 Banana pin banana pin shielded x x x AF cable 2403928136 2 52 300 mm yellow green x AF cable 2403928137 2 52 520 mm yellow green x AF cable 2403928138 2 52 520 mm blue x AF cable 2403928139 2 52 520 mm brown x Coaxialadapter 9724321318 BNC fem TNC fem BN712300 x x x Coaxialadapter 9724321319 BNC fem TNC male BN712000 x x x Coaxialadapter 9724321320 B...

Page 43: ...h reference to trigonometrical points or if a satelĆ lite receiver is available via satellite radio for increased precision ÄÄÄÄ ÄÄÄÄ ÄÄÄÄ ÄÄÄÄ r100 m r200 m r300 m 100 m 200 m 300 m h 0 9 m 7 h 10 m group of trees h 7 m power lines h 5 m h 10 m metallic buildings h 3 5 5 5 m h 12 m 10 no metallic objects TOP VIEW 0 5 1 1 5 2 2 5 Individual tree with height up to 12 m Group of trees Telephone line...

Page 44: ...er and ladder foundation drawing 950 1200 600 600 400 500 300 2490 175 175 xxxx 500 1040 1200 250 2790 250 Shelter DVOR centre Ladder 550 200 450 entrance side opening for A A A A 650 275 275 200 200 250 800 950 250 soil top 1200 1200x400 804 950 150 0 00 0 00 foundation for cable box ladder foundation soil top foundation for cable box power and telephone cables NOTE Counterpoise height Distance x...

Page 45: ...500 600 600 300 950 13500 25000 xxxx distance depends on counterpoise height 1200 1040 175 15 15 30 30 15 15 30 30 15 15 30 30 15 15 30 30 1747 3026 1747 3026 1747 all dimensions in mm ladder cable box cable input 2490 1747 foundation foundation power tel not to scale DVOR counterpoise foundation drawing for information only Fig 2 3 Foundations for DVOR counterpoise and shelter for information onl...

Page 46: ......

Page 47: ... should be placed on the foundations such that the door is oriented according to the site survey and project drawings The shelter is anchored to the four foundation blocks using the ISO corners and twist locks The power supply mains and signal RC field monitor feeder cables enter from below through openings in the shelter floor 2991 Dimensions in mm T are weight approx 900 kg 2438 2438 Support for...

Page 48: ...ing Diagram of electrical Installation 40 0 03 ASU switch option box B18A B10A C20A F1 K50A F2 G0 2A C20A A C2 F6 C20A C20A 1 2 3 4 5 6 7 8 9 F8 F9 B2A B10A B10A 10 change o Temp Sensor set to 36 C θ junction box heater obstruction light twilight switch antenna optional optional Emergency battery 48 V 90 V Type F NAV DME DME if available 48 V 48 V TX FI1 Â Â Battery Box 10 ft Container Shelter Ven...

Page 49: ... poise platform 2 4 1 1 Prerequisites Counterpoise The counterpoise for the DVOR antenna has been completely assembled according to the drawĆ ings set included with the counterpoise material Support for carrier antenna counterpoise center The support for mounting the middle antenna has been installed in the center of the counterpoise Permissible deviation from the center 150 mm Antenna ring Fig 2 ...

Page 50: ... 2 Installation of the Carrier Antenna Determine the center of the counterpoise with respect to the antenna ring of the sideband antennas Install the vertical pipe of the carrier antenna at this point then align it using a spirit level compensate if necessary by means of washers etc and secure Mount the carrier antenna with cover on the vertiĆ cal pipe and secure with the appropriate screws CAUTIO...

Page 51: ... similar The vertical pipe should be installed such that the installation hole for the decoupling module is on the left as seen from the middle antenna Secure the vertical pipe to the antenna ring by means of a clamping plate and 2 screws Fig 2 11 Secure all vertical pipe fastenings to the outer ring Fig 2 10 1 2 Antenna ring 3 4 5 6 50 51 North Antenna ring vertical pipes outer ring Fig 2 10 Inst...

Page 52: ...ond procedure Each vertical pipe adjusted must also be aligned precisely using a spirit level The hooks Fig 2 13 5 on both sides of the antenna ring holding a layer of structural steel matting should be adjusted as necessary in order to ensure that they are firmly secured The hooks ensure adequate electrical connection 1 2 3 720 mm 1 Vertical pipe of antenna 2 2 Wooden rod 3 Vertical pipe of anten...

Page 53: ...g 2 14 The RF cables should be pulled out through the installation hole into the vertical pipe and connected to the coaxial connections on the side of the decoupling module Fig 2 15 Check that these screwed connections are secure Not used with matcher ASU ASM D 1 ASM D 5 A50 A1 A2 A3 A4 A5 A6 Antenna A50 Decoupling Antenna A4 from ASU Antenna A2 X2 X1 ASM D 6 ASM D 10 X4 X3 Module from ASU Antenna...

Page 54: ...pipe using UV resistant cable ties When the cables have been pulled through the pipes below the counterpoise their ends should be sealed using the packaging material for the antenna sections otherwise birds may attempt to nest in the pipes The supply cables at the shelter should be laid such that they form a sufficiently large loop to prevent any rainwater running down the cables and coming into c...

Page 55: ...3 mounting bolts for the antenna lower section vertical pipe and move the lower section of the antenna slightly to the left and right on the vertical pipe in accordance with the oblong holes in the vertical pipe Using the rectangular tube Fig 2 20 align the various sideband antennas from the outside of the installation ring via the pointer sights press fitted at the top of the antenna lower sectio...

Page 56: ...6 117 118 119 CA mm CA frame MHz Fig 2 19 Plate separation distance of capacitors CA as a function of the operating frequency Clamping screws Bearing marker pin Carrier antenna middle antenna Sideband antenna Bearing marker rear sight Bearing marker front sight Fig 2 20 Aligning the sideband antenna with the aid of bearing markers ...

Page 57: ...f 180 200 m from the center of the counterpoise It is generally installed at magnetic north The supply cable is fed via a cable trench to the DVOR housing ÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇ ÉÉ ÉÉ Cable trench 180 200 m 1 3 m 30 m Foundation Mast Monitor dipole Counterpoise with antennas Fig 2 21 Diagrammatic site layout of DVOR monitor dipole Mast mounting on foundation ...

Page 58: ...s with the aid of 6 other persons providing the dismantled parts are to be scrapped If the antennas are destined for further use the work will accordingly take longer on account of the necessary care Install the vertical pipe of the new carrier antenna in the position of the old pipe and secure The instalĆ lation positions of the 50 sideband antennas should be selected as described in Section 2 4 ...

Page 59: ...n the BCPS connection plate and the C bar which are located at the lower back side of the ASU or transmitter cabinet or on the ASU or transmitter cabinet bottom plate They are accessible after opening the rear door of the rack The connections at the transmitter cabinet in the 100 W version are made to the C bar at the lower back side ASU cabinet rear 100 W version only or DVOR cabinet rear 50 W ve...

Page 60: ...NG Before connecting the cables check that the mains lead is dead and that the battery is not connected Set the ON OFF switches of the ACC 54 units to OFF Remove the units Remove the rear panel Connect a cable between the terminal FPE and the potential equalization bus Connect the mains leads nom 115 to 230 VAC 50 Hz single phase to the terminals designated L3 N and PE located on the bottom plate ...

Page 61: ...t have a 50 A fuse if the battery monitoring program is used and an automatic overcurrent device 50 ADC with signalling contact Connect the signalling contacts to the terminals BFUSE of the measuring line connector Install the following cables for measuring purposes from battery plus pole via terminals of fuse switch F2 in fuse box to terminal BAT2 of measuring line connector from the middle of th...

Page 62: ...edy 2 1 F F 0 factory wired Battery Battery RL RL NAV DME DME NAV BFUSE BFUSE UBAT0 UBAT2 UBAT1 B B R R N D D N F F 0 2 1 Signboard Signboard N N D D R R connection ÂÂÂ ÂÂÂ PMM DC DC BP C TX2 TX1 GND 48VP2 bus bar X74 rear side of transmitter rack NAVNAV N ASUASU A A NAV N ASU C bar bottom plate cable glands with NAV NAV A A ASU power terminal to ASU box BCPS control line mains filter connectors p...

Page 63: ...O_GND BFUSE in_opto 24 BCPS ON OFF L ON Status report Modul defective Current measurement Voltage measurement L HC level HC level X74 5 19 5 19 Opto in BFUSE 12 1 3 7 11 15 14 16 18 20 9 22 12 1 3 11 15 14 16 18 20 9 22 13 24 19 17 5 19 12 1 3 7 11 15 5 19 14 16 18 20 9 22 13 24 19 17 12 1 3 11 15 5 19 14 16 18 20 9 22 13 24 19 17 Speedy 26pin male BP DC PMM TX1 TX2 MON LRCI S1 S2 K1 CSL F1 F2 BP ...

Page 64: ...ol ASU rack Transmitter rack rear side rear side BCPS Bite CSB IN CSB OUT SB1 SB2 ËËËËËËËËËËËËËËËËË 42 44 46 48 50 32 34 36 38 40 22 24 26 28 30 12 14 16 18 20 02 04 06 08 10 41 43 45 47 49 31 33 35 37 39 21 23 25 27 29 11 13 15 17 19 01 03 05 07 09 sheet cover CE version only SB1 SB2 DME IDENT DIAGNOSIS Local PC LGM1 LGM2 DME LGM3 NDB ASU VAM ANALOG OIO LCP IN OIO LCP OUT CSB MON4 MON3 BCPS MON2 ...

Page 65: ...ng cable connections ASU Rack Cable No Cable through of Shelter RF W51 Carrier antenna ANT51 RF W1 W50 Sideband antennas ANT1 ANT50 9 7 5 3 1 66 61 19 17 15 13 11 67 62 29 27 25 23 21 68 63 39 37 35 33 31 69 64 49 47 45 43 41 70 65 10 8 6 4 2 76 71 20 18 16 14 12 77 72 30 28 26 24 22 78 73 40 38 36 34 32 79 74 50 48 46 44 42 80 75 65 64 63 62 61 70 69 68 67 66 57 59 75 74 73 72 71 80 79 78 77 76 5...

Page 66: ...DVOR 432 Installation Operation and Maintenance 2 24 Ed 01 04 ...

Page 67: ...serial communication interface NDB ANALOG measurement purposes Local PC local operation with ADRACS VAM optional voice or ATIS connection e g from tower OIO LCP IN spare in optocoupler OIO LCP OUT spare out optocoupler 2 5 4 1 DME IDENT SubD 37pin male from connector X85 BP CD Refer to section 2 7 2 5 4 2 DIAGNOSIS SubD 9pin male from connector X86 BP CD PIN ASSIGNMENT PIN ASSIGNMENT 1 DCD 6 DSR 2...

Page 68: ... GND X98 RS422 direct PIN ASSIGNMENT PIN ASSIGNMENT 1 TXD 6 RXD 2 TXD 7 RXD 3 not used 8 not used 4 not used 9 not used 5 not used 2 5 4 5 LGM3 NDB SubD 9pin female from connector X94 or X99 BP CE X94 LGM modem output PIN ASSIGNMENT PIN ASSIGNMENT 1 La 6 DSR 2 Lb 7 RTS 3 A2 8 CTS 4 B2 9 RI 5 GND X99 TTL RS232 direct PIN ASSIGNMENT PIN ASSIGNMENT 1 DCD 6 DSR 2 RXD 7 RTS 3 TXD 8 CTS 4 DTR 9 RI 5 GND...

Page 69: ...7 RTS 3 TXD 8 CTS 4 DTR 9 RI 5 GND 2 5 4 8 VAM SubD 9pin female from connector X95 BP CE PIN ASSIGNMENT PIN ASSIGNMENT 1 LV1 6 LVG 2 LV2 7 3 SYNCH 8 4 SYNCR 9 5 GND 2 5 4 9 OIO LCP IN SubD 25pin male to connector X2 of LCP via X82 BP C PIN ASSIGNMENT PIN ASSIGNMENT 1 GND 14 VCC 5 V 2 TTLOUT3 internal use 15 IAUX0 3 IAUX1 16 IAUX2 4 IAUX3 17 IAUX4 5 IAUX5 18 IAUX6 6 IAUX7 19 IAUX8 7 IAUX9 20 IAUX10...

Page 70: ...MENT PIN ASSIGNMENT 1 COM3 common connect 3 14 COM4 common connect 4 2 TTLOUT2 internal use 15 OAUX0 3 OAUX1 16 OAUX2 4 OAUX3 17 OAUX4 5 OAUX5 18 OAUX6 6 OAUX7 19 COM1 common connect 1 7 OAUX8 20 OAUX9 8 OAUX10 21 OAUX11 9 OAUX12 22 OAUX13 10 OAUX14 23 OAUX15 11 COM2 common connect 2 24 TTLOUT0 internal use 12 TTLOUT1 internal use 25 VCC 5 V 13 GND ...

Page 71: ... 4 Connection of auxiliary Inputs Outputs LCP The Navaids installation contains an auxiliary interface on LCP board with 16 optocoupler inputs and 16 optocoupler outputs for additional signals which is at the user s disposal The external wiring of the OIO connectors is shown in Fig 2 27 2 5 5 5 Connection of auxiliary Analog and Temp inputs CSL Connect voltage measurement lines to plug SubD 9pin a...

Page 72: ...AGND X81 BP C flat plug PIN ASSIGNATION 1 TEMP1 2 TEMP1 3 TEMP2 4 TEMP2 Assignment of aux measurement 39k2 10k AGND 5V AGND TEMP A IN 20 V PT1000 47k4 3k9 1 3 2 4 X81 X84 inputs Local PC operation via connector Local PC control line BCPS Analog signals to CSL ext via X81 for temp sensor PT1000 connector ANALOG top of the cabinet on top of the cabinet TX2 TX1 50W 100W TX2 TX1 50W 100W TX2 TX1 X82 X...

Page 73: ...llations 50 W BCPS connection Plate BFUSE BFUSE BAT0 BAT1 BAT2 BAT BAT W60 BCPS Connection Plate NAV NAV GND TX1 TX2 battery box 48 V fuse box BFUSE BFUSE BAT2 BAT1 BAT0 50 A 0 2 A DC F1 F2 1 2 3 4 24 23 PE N L3 Mains distribution box 24039 28225 24039 28227 24039 28229 24039 28230 24039 28231 24039 28226 24039 28228 24039 28234 24039 28235 24039 28234 24039 28232 24039 28233 W62 W64 W65 W66 W61 W...

Page 74: ......

Page 75: ...und resistance the length and extent of the network laid are the crucial points not the cross sectional area of the conductors Favorable resistance conditions are provided by arable land and loamy ground ground resistivity 100 W per meter The data specified below applies to these conditions With other types of terrain the factors below must be taken into consideration increase in the resistance wi...

Page 76: ...rews at least M10 in size should be used 2 6 4 Ground Plates Ground plates are solid perforated sheet metal plates with dimensions of approx 0 5 x 1 m or 1 x 1 m which are embedded vertically in the ground The top edge of the plates should always be at least 1 m below the surface Several ground plates must be connected in parallel in order to reduce the grounding resistance The minimum spacing sho...

Page 77: ... counterpoise DVOR shelter Auxiliary ground 2 50 m 50 m 50 m approx 10 m Grounding plate Auxiliary ground 1 Fig 2 31 Determining of the ground resistance Example of a DVOR plate ground with 5 x 2 plates each 1m2 The drawing is not to scale A theoretical ground resistance of approx 2 W good would be obtained on the basis of the 10 plates connecting conductors and assumed terrain conditions e g arab...

Page 78: ...sified by the resistance of the 2 test leads The cross sectional area of the test leads should not be less than 1 5 mm in order to ensure an adequate breaking strength With this cross sectional area and an assumed length of 2 x 25 m 50 m the falsifying resistance would be 0 58 W This resistance should therefore be measured and deducted from measured values 1 2 and 3 The measured values corrected i...

Page 79: ...ersions are described in Section 2 7 2 1 and 2 7 2 2 the IOM version in Section 2 7 2 3 Fig 2 32 shows the pin assignment of the DME IDENT and LGM2 interface DVOR used to conĆ nect the DME Regard the configuration of the subassembly CSL of the DVOR in Section 2 7 2 4 CorĆ responding information to the DME will be found in the corresponding manual 2 7 2 1 CSB Version I O panel at the rear of cabine...

Page 80: ...3 28214 Fig 2 40 and 2 42 to connector AUX1 on the DME IOM at the rear side of the cabinet lower section Place the RS 232 cable Ref No 97240 28168 in the shelter cable duct Connect it to the adapter DME cabinet and to connector LGM2 on top of the DVOR cabinet 2 7 2 4 Configuration of DVOR 432 and DME FSD 40 45 DVOR 432 Set switch S5 see Section 6 2 4 on front of the CSL Ref No 83134 23101 which is...

Page 81: ...9 10 11 12 13 14 15 16 DME ID 17 DMSR 18 DMOVS 19 GND DME X85 W100 X98 LGM2 6 7 8 9 1 2 RX 3 TX 4 5 GND W1xx Subrack BP C DVOR 432 cabinet RS 232 connection Fig 2 32 Interface Assignment of LGM2 and DME Ident in DVOR 432 1a 1b AF distribution box Terminal bar 1a 1b 2a 2b 2a 2b 3a 3b 3a 3b Plug in holder for overvoltage arrester removed Fig 2 33 AF distribution box assignment of terminals example ...

Page 82: ...V 1 kOhm SIGNAL GND SIGNAL GND DVOR 432 PIN SIGNAL NAME 4 6 24 3 5 25 12 16 18 19 37 36 34 35 17 DME FSD 40 45 24009 28148 ID cable 37pin male 25pin female connector DME IDENT connector VOR SK26 Fig 2 35 CSB Version I O panel at cabinet rear side ident connection DVOR to DME SIGNAL NAME PIN DVOR 432 RS232 PIN SIGNAL NAME 2 3 5 RS232 2 3 5 2 3 5 RX TX GND 97243 28211 2 3 7 RD BB TD BA SC CR AB GND ...

Page 83: ...V 1 kOhm SIGNAL GND SIGNAL GND DVOR 432 PIN SIGNAL NAME 4 6 24 3 5 25 12 16 18 19 37 36 34 35 17 24009 28148 ID cable DME FSD 40 45 connector IFV SK10 37pin male connector DME IDENT 25pin female Fig 2 38 CSB Version I O panel on cabinet top ident connection DVOR DME SIGNAL NAME PIN DVOR 432 RS232 PIN SIGNAL NAME 2 3 5 RS232 2 3 5 2 3 5 RX TX GND 2 3 7 RD BB TD BA SC CR AB GND DME FSD 40 45 9pin ma...

Page 84: ...kOhm SIGNAL GND SIGNAL GND DVOR 432 PIN SIGNAL NAME 4 6 24 3 5 25 12 16 18 19 37 36 34 35 17 24009 28148 AF cable DME FSD 40 45 37pin male connector DME IDENT 25pin female connector VOR SK26 Fig 2 41 IOM Version connector panel at cabinet rear side ident connection DVOR DME SIGNAL NAME PIN DVOR 432 RS232 PIN SIGNAL NAME 2 3 5 RS232 2 3 5 2 3 5 RX TX GND 97243 28214 2 3 7 RD BB TD BA SC CR AB GND D...

Page 85: ...irport AF distribution box Fig 2 43 Cable connections to DVOR and DME FSD 40 45 DME with individual internal or external modem for RC connection LGM 1200 DVOR 432 ext Modem DME 415 435 PL1 Port 3 SK4 AF1 ID LGM1 RCSE 443 2 1 DVOR Shelter Tower 4 3 2 3 9 9 Modem PL7 DME 415 435 3 RS 232 alternativ 1 6 1 6 9 9 PL7 2a 2b La Lb DME IDENT 1 1 2 1 2 LGM1 1a 1b La Lb Note 1 Line connection 2 wire to SubD...

Page 86: ...ME Shielding of ID cable is connected one sided to DME connector ground The adapter 97243 28211 can be ommitted if a RS 232 cable is used with 1 1 through conĆ nection not crossed 2 7 3 2 Configuration of DVOR 432 and DME 415 435 DVOR 432 setting switches or jumper of CSL Ref No 83134 23101 see Section 6 2 4 Set switch S5 to position ASSOC NAV 400 is Master for the collocation with DME 415 435 Set...

Page 87: ...und not connected between DVOR pin 19 and DME DME 415 435 15 15 DAFSTL 19 19 1 DVOR 432 37pin male connector DME IDENT 25pin female connector SK4 AF1 24009 28149 ID cable Fig 2 46 Ident connection CVOR DVOR to DME 415 435 2 3 7 SIGNAL PIN RS232 PIN SIGNAL 2 3 5 RS232 TXD RXD PGND 2 3 5 2 3 5 RX TX GND DME 415 435 DVOR 432 9pin male connector LGM2 DME 25pin male connector PL1 Port 3 NOTE The adapte...

Page 88: ... DME antenna cables to the centre of the counterpoise and into the Shelter Refer also to Technical Manual for DME FSD 40 45 or DME 415 435 manual WARNING Before connecting the obstruction light supply cable check that mains is switched off and mains lead is dead ÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇ obstruction light DME antenna antenna mast Counterpoise DVOR DVOR antennas ...

Page 89: ...status of monitor s and transmitter s and measurement data four control buttons to perform simple activities like change over or disconnect the transmitter s a key lock switch to select different operational modes of the station i e disable enable local and remote control of the station REMOTE LOCAL MAINTENANCE the actual mode is presented on the LCD screen A serial connector RS 232 Local PC is lo...

Page 90: ...ge the system state by means of the control buttons below the display screen and to present measurement data of the system After switching on the equipment a Welcome window appears on the display screen where the operĆ ator gets information about the actual system and where he can start the application see section 3 2 2 2 After start of the application the System Status window appears which contai...

Page 91: ...ion DUMMY OFF Corresponding transmitter TX 1 2 is connected with dummy load and switched off via SW command but ready for operation after switch over command DUMMY SHUT DOWN Corresponding transmitter TX 1 2 is switched off due to monitor alarm detection TX is not ready for operation MAINTENANCE status information NORMAL No maintenance alert maintenance data is in valid range WARNING Maintenance al...

Page 92: ...ng control buttons are available MENU Calls submenu MENU LIST for selection of one of the control or data indication submenus XMTR Calls submenu TRANSMITTER CONTROLS for selection of a certain transmitter command MON Calls submenu MONITOR CONTROLS for selection of a certain monitor bypass command DATA Calls indication MONITOR DATA This section gives an overview of different System Status windows d...

Page 93: ...e executive the aerial transmitter TX 2 initiated an alarm condition before it was shut down by the monitor and the standby transmitter TX 1 was already shut down not ready for operation No maintenance alert exists and the actual operational mode is set by key lock switch to REMOTE mode ALARM WARNING NORMAL MONITOR 1 ALARM EXECUTIVE MONITOR 2 ALARM EXECUTIVE AERIAL TX 2 SHUT DOWN DUMMY TX 1 SHUT D...

Page 94: ...r the detailed description of the states see section 3 2 2 1 ALARM WARNING NORMAL MONITOR 1 PREALARM EXECUTIVE MONITOR 2 NORMAL EXECUTIVE AERIAL TX 1 ON DUMMY TX 2 OFF MAINTENANCE NORMAL OPER MODE REMOTE MENU XMTR MON DATA ALARM WARNING NORMAL MONITOR 1 NORMAL EXECUTIVE MONITOR 2 NORMAL EXECUTIVE AERIAL TX 2 ON DUMMY TX 1 SHUT DOWN MAINTENANCE NORMAL OPER MODE REMOTE MENU XMTR MON DATA Warning sta...

Page 95: ...FAULTY EXECUTIVE AERIAL TX 1 ON DUMMY TX 2 SHUT DOWN MAINTENANCE NORMAL OPER MODE LOCAL MENU XMTR MON DATA Warning status because of shut down of TX 2 Warning status because of faulty monitor 2 ALARM WARNING NORMAL MONITOR 1 PREALARM EXECUTIVE MONITOR 2 NORMAL EXECUTIVE AERIAL TX 2 WARNING DUMMY TX 1 OFF MAINTENANCE NORMAL OPER MODE LOCAL MENU XMTR MON DATA Warning status because of BIT alert of T...

Page 96: ...em Control window provides functions to initiate simple control commands by actuating one of the control buttons XMTR MON and DATA or by selecting a control menu after actuating the MENU button The System Control windows providing the control commands are described within this secĆ tion Two types of System Control windows exist the window TRANSMITTER CONTROLS with commands to switch a transmitter ...

Page 97: ...press control button XMTR System Control window transmitter commands Fig 3 9 System Control window TRANSMITTER CONTROLS example MAINTENANCE NORMAL OPER MODE LOCAL MENU XMTR MON DATA MONITOR CONTROLS SWITCH MON 1 2 BYPASS OFF SWITCH MON 1 BYPASS OFF SWITCH MON 2 BYPASS OFF BACK ENTER actual monitor state MONITOR 1 BYPASS ON MONITOR 2 BYPASS ON System Status window press control button MON System Co...

Page 98: ... again with the changed status of MON 1 2 3 2 2 5 System DATA Window If the operator is pressing the DATA button of the System Status window monitor data for MON 1 and MON 2 is indicated MONITOR DATA see Fig 3 11 Exit this window by pressing Back MONITOR DATA MON 1 MON 2 RF LEVEL 98 98 AZIMUTH 357dg 358dg 30HZ AM 30 1 29 8 9960HZ AM 29 4 30 4 FM INDEX 16 0 15 9 BACK DUMMY TX 2 OFF MAINTENANCE NORM...

Page 99: ...NU window the following control buttons are available BACK Return back to System Status window up Scolling up within command data list actual position is marked with down Scolling down within command data list actual position is marked with SELECT Selects menu item marked with For the control windows the following control buttons are available BACK Return back to System Status window up Scolling u...

Page 100: ...LCP is possible Data can be requested from the PC connected with remote control RMMC or from local PC the programĆ ming of the station via local or remote PC is possible if user login level is high enough LOCAL The equipment is operating in LOCAL mode Data can be requested from remote control side RMMC but not programmed This is only possible by local PC MAINTENANCE Similar to REMOTE mode except t...

Page 101: ...z AM 30 9960 Hz AM 30 30 Hz FM Mod Index 16 Azimuth 90 degrees 3 30 Hz AM 30 9960 Hz AM 30 30 Hz FM Mod Index 16 Azimuth 135 degrees 4 30 Hz AM 30 9960 Hz AM 30 30 Hz FM Mod Index 16 Azimuth 180 degrees 5 30 Hz AM 30 9960 Hz AM 30 30 Hz FM Mod Index 16 Azimuth 225 degrees 6 30 Hz AM 30 9960 Hz AM 30 30 Hz FM Mod Index 16 Azimuth 270 degrees 7 30 Hz AM 30 9960 Hz AM 30 30 Hz FM Mod Index 16 Azimuth...

Page 102: ... ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ASU INT ACC ËËËË ËËËË ËËËË ËËËË ËËËË ËËËË ACC ACC Modem Modem Modem ACC DCC 05 PMM ËË ËË ËË ËË ËË ËË ËË DCC 28 LCP MSP MSG C CPU live lamp green TXDA lamp green RXDA lamp green RXDA lamp TXDA lamp morse code indication pushbutton manual reset front side pushbutton manual reset earphone jack voice ATIS CPU live lamp green optional DC DC ok LED installed in ASU cabi...

Page 103: ...on TX1 ON yellow MON2 Monitor Fault red BCD Switch TEG Key and test jack PM1 test condition M1 modem operable M5 comm line subsystem and RCSE operable Answ modem occupies line S1 DEE operable FKS8 connector LGM28 8D1 opt 5 LGM ACC Converter on off test jack Uout Main Switch NAV TX1 TX2 on off pushbutton manual TX1off pushbutton manual TX2on pushbutton manual TX2off LC CPU 54 V available LED R32 fi...

Page 104: ...oustic Alarm When one of the four control buttons of the LCI is pressed the acoustical alarm stops 3 4 6 Monitoring ATIS or Voice An earphone 600 Ohm can be connected to a 3 5 mm jack on MSP VD to listen to ATIS information ATIS Automatic Terminal Information System 3 4 7 Functional Check of Indications When the two middle buttons of the control buttons of the LCI are pressed simultaneously all in...

Page 105: ...and ADRACS 4 2 4 Use of Main Menu Items and Activities Masks 4 2 5 Entering Station Configuration Data 4 3 MATCHING OF ANTENNAS 4 3 1 Mechanical Preadjustments 4 3 2 Test Set Up 4 3 3 Transmitter Setting 4 3 4 Matching Procedure 4 4 CHECK OF DECOUPLING BETWEEN SIDEBAND ANTENNAS 4 4 1 Test Set Up 4 4 2 Transmitter Setting 4 4 3 Check of Decoupling 4 5 CALIBRATION OF MONITORS 4 5 1 Preparations 4 5 ...

Page 106: ...11 FLIGHT CHECK 4 11 1 Prerequisites 4 11 2 Correction of TX1 and Monitor 1 4 11 3 Correction of TX2 with Monitor 2 4 11 4 Adjustment of Monitor 2 with TX1 TX2 4 11 5 Check of Monitor Alarm Limits 4 11 6 Normal Operation 4 12 RELATIONSHIP BETWEEN THE MONITOR DISPLAY OF THE RF LEVEL AND THE POWER ...

Page 107: ...the corresponding data window First the ADRACS software should be installed on the available PC For installation procedure refer to Section 1 4 of Technical Manual ADRACS Ref No 83140 55324 4 1 2 Recommended Measuring Equipment 1 Multimeter 1 Scope dual trace 1 Thruline power meter with 1 W 10 W and 100 W probes range of frequency 108 118 MHz 1 Attenuator 20 dB 1 W 1 Directional coupler 1 RF cable...

Page 108: ... antenna system proceed as follows Connect the 50 sideband cables of ASU to the inputs of the Antenna Simulator whereby antenĆ na output No 1 is to be connected to socket W1 etc Arrange simulator setup according to Fig 4 4 Carry out the alignment of DVOR 432 transmitter and monitor as described in the following how ever Sections 4 3 4 4 4 8 1 6 4 8 1 9 4 8 1 10 and 4 11 have to be omitted ...

Page 109: ...interface connector e g COM1 to connector Local PC on top of the cabinet using an interface cable zero modem cable b Switch on mains and set POWER switches of BCPS ACC modules cabinet to position ON c Close battery fuse switches battery fuse box inside shelter d Set switches TX1 TX2 on PMM cabinet front side to position ON e Set main switch NAV on PMM cabinet front side to position ON During initi...

Page 110: ...t button The ADRACS application is closed 4 2 4 Use of Main Menu Items and Activities Masks From the Main Menu in ADRACS program the items Commands C and Activities A are used in the alignment procedure of the first setup Followingactivities masks are available composed of different data sets listed in section 4 3 of Technical Manual ADRACS Ref No 83140 55324 Configuration CF Error Curve EC Antenn...

Page 111: ...ame e Tighten capacitor plates with lock nuts Then check their distance once again 4 3 1 2 Quartz Trimmer Capacitor CTr Remove antenna cover Trimmer CTr is located in the center of the antenna feed Fig 4 2 For adjustment a screwdriver with a long blade is necessary a Turn CTr carefully quartz trimmer counterclockwise to the stop b Read the number of turns for CTr to adjust station frequency from F...

Page 112: ...cedure a Set M1 AGC Adjustment value to M1 RF Level indication of 100 A TS M1 AGC Adjustment If necessary change M1 Digital Ctrl Attenuation dB NOTE Range of values 2 255 b Connect measuring cable to reflected output of directional coupler at antenna1 and remove 20 dB attenuator at input of monitor 1 NOTE See test setup Fig 4 3 c Set M1 RF Level indication to a minimum by alternately adjusting bot...

Page 113: ...n ding 50 0 g Set level of SB1 cosine to 50 0 A TS T1 SBA COSINUS Blending 50 0 4 4 3 Check of Decoupling a Switch through to antenna 50 Choose in the TX Settings window the command T1 Start Antenna Single Step and select Antenna 50 REMARK Do not use this command when working with an antenna simulator b Set M1 AGC Adjustment value to M1 RF Level indication of 100 A TS M1 AGC Adjustment If necessar...

Page 114: ...eadjusted if necessary e Insert test probe into antenna 49 and switch through to antenna 48 A TS by decrementing M1 RF Level indicates now decoupling of antenna 49 which should be again 160 Continue in this manner until all sideband antennas have been checked f Switch off TX1 C Switch TX1 Off g Select blending function 4 of BSG D subassembly NOTE Open DIP FIX switches S14 and S15 h Remove test pro...

Page 115: ...h has to be 0 c Set test generator to position 0 4 5 2 3 30 Hz FM Modulation Index a Set calibration factor M1 Calibrate Mod Index 30Hz FM to A TG M1 Calibrate Mod M1 TSG Mod Index 30Hz FM indication of 16 Index 30 Hz FM b Set test generator to position A 30 Hz FM Mod Index has to be 15 Set test generator to position B 30 Hz FM Mod Index has to be 17 Set test generator to position C 30 Hz FM Mod I...

Page 116: ...TRUCTION C Commands A Activities Submenu DVOR 432 Installation Operation and Maintenance 4 12 Ed 01 04 4 5 3 Calibration of Monitor 2 a Repeat section 4 5 2 for monitor 2 b Switch off TX1 2 C Switch both TX Off ...

Page 117: ... Set CSB power to nominal value 30 W or up to 100 W A TS T1 Carrier Power Measure the power W NOTE If there is a difference between the nominal power and the meaĆ sured power adjust the power by means of R1 of the Control CouĆ pler CCP D refer to Fig 4 5 BP T X16 g Preset levels of blending functions sine and cosine for SB1 and SB2 SB1 S A TS T1 SBA SINUS Blen ding SB1 C A TS T1 SBA COSINUS Blendi...

Page 118: ... roughly with min distortion mod depth on 9960 Hz signal NOTE Range of values 0 359 f Switch off single channel mode of monitor 1 A TS M1 Single Channel OFF 4 6 1 3 Equality Check of Levels of Blending Signals a Measure levels of the demodulated blending signals using thescope at the following test points on TEST card of ASU 1b5 SB1 S 1b7 SB1 C 1b6 SB2 S 1b8 SB2 C b If difference of levels is grea...

Page 119: ...as described in b NOTE Range of value 0 99 5 note down value 4 6 1 5 30 Hz AM Modulation Depth a Set T1 Mod Depth 30 Hz AM so that M1 Mod Depth 30 Hz AM A TS T1 Mod Depth becomes 30 30 Hz AM NOTE Range of values 0 40 0 4 6 1 6 Preadjustment of Azimuth a Set phase reference for the 30 Hz FM signal to antenna 1 A TS T1 Start Antenna Normal Operation Antenna 1 b Choose azimuth of transmitter to obtai...

Page 120: ...00 A MC M2 AGC Adjustment If necessary change M2 Digital Ctrl Attenuation dB b 30 Hz AM mod depth A MC M2āMod Depth Check the M2 Mod Depth 30 Hz AM reading ā30Hz AM NOTE Use window MON2 Measurement Nominal value 30 0 1 0 c Subcarrier A MC ca Check the M2 Mod Depth 9960 Hz AM reading NOTE Use window MON2 Measurement Nominal value 30 0 1 0 cb Check the M2 Mod Index 30 Hz FM reading NOTE Use window M...

Page 121: ... 30 Hz AM mod depth A MC M2 Mod Depth 30Hz AM NOTE Nominal value 30 0 1 0 c 9960 Hz mod depth A MC M2 Mod Depth 9960 Hz AM NOTE Nominal value 30 0 1 0 d 30 Hz FM mod index A MC M2 Mod Index 30Hz FM NOTE Nominal value 16 0 0 5 e Azimuth A MC M2 AZIMUTH NOTE Same as in 4 6 1 6b 0 2 f Switch off TX2 C Switch TX2 Off ...

Page 122: ...and re A EC T1 Start Antenna cord reading of M1 Azimuth as 2nd value in test sheet Normal Operation Antenna 3 f By incrementing twice select next but one antenna as 30 Hz phase reference and record azimuth readings of M1 Azimuth Continue this way until all 25 measurement values have been recorded The measured values have to increment in steps of 14 4 Record the differences from these nominal value...

Page 123: ...ansmitters has to be changed these azimuth alarm limits have to be readjusted 4 8 1 2 RF Level a Upper limit e g 123 A AL1 M1 RF Level Upper Limit b Lower limit e g 71 A AL1 M1 RF Level Lower Limit NOTE Range of values Upper Limit 100 150 Lower Limit 50 100 4 8 1 3 30 Hz AM Signal a Upper limit e g 34 5 A AL1 M1 Mod Depth 30 Hz AM UL b Lower limit e g 25 5 A AL1 M1 Mod Depth 30 Hz AM LL NOTE Range...

Page 124: ...L1 M1 Distortion on 9960 Hz LL 0 4 8 1 8 30 Hz FM Distortion a Choose M1 Distortion on 30 Hz FM reading A AL1 b Limit Add 2 to M1 Distortion on 30 Hz FM reading and key in A AL1 M1 Distortion on 30 this value as upper limit however max 5 Hz FM UL NOTE Range of value 0 99 9 4 8 1 9 Distortion of SSB Signal ME 10 kHz a Choose M1 Distortion on det LSB reading A AL1 b Upper limit Add 3 to M1 Distortio...

Page 125: ...Activity mask A AL2 Alarm Limits M2 4 9 BATTERY MONITORING NOTE The floating battery must be installed and connected Use activities mask BCPS BAT A BAT a Enter installed battery capacity A BAT Installed Batt Capa city Ah b When the Battery is fully charged set Set Batt Charge Level to A BAT Set Batt Charge the same value Installed Capacity Charge Level Level Ah NOTE Divide Installed Capacity by 50...

Page 126: ...s and Warnings NOTE Allow system approx 30 s for initialization c Monitor 1 2 bypass OFF C Set both MON By pass off d Simulate monitor 1 and 2 alarm by e g disconnecting monitor inputs and check that after selected alarm delay TX1 is switched off and TX2 is switched on Remove monitor alarm conditions immediately after change over e Check that no MONITOR ALARM or BITE WARNING is on otherwise click ...

Page 127: ... Depth 30 Hz AM b Change 30 Hz AM mod depth for desired value according to A FC T1 Mod Depth 30Hz announcement of Flight Check Engineer AM NOTE Range of values 0 40 Note value c Recalibrate 30 Hz mod depth indication of monitor 1 for 30 A MC M1 Calibrate Mod Recommendation Perform this after flight check Depth 30 Hz AM 4 11 2 2 9960 Hz Mod Depth a In case of required mod depth increase Increase SB...

Page 128: ...1 Calibrate Mod monitors Depth Ident M2 Calibrate Mod Depth Ident 4 11 2 5 Voice Modulation Depth Change voice mod depth for desired value according to announcement A FC T1 Mod Depth of Flight Check Engineer Voice AM NOTE Range of values 0 40 4 11 3 Correction of TX2 with Monitor 2 Correct TX2 in the same way as described for TX1 in section 4 11 1 A FC however set the 30 Hz AM and 9960 Hz mod dept...

Page 129: ...AM b Remember 30 HzAM mod depth value of T1 Mod Depth 30Hz AM c Reduce 30 Hz mod depth by approx 15 until both monitors alarm A FC T1 Mod Depth 30 Hz AM NOTE Range of values 0 40 0 d After check by Flight Check Engineer key in recorded value of b A FC T1 Mod Depth 30 Hz again AM 4 11 5 3 9960 Hz Modulation Depth Alarm a Check 9960 Hz mod depth indication M1 Mod Depth 9960 Hz AM A FC and M2 Mod Dep...

Page 130: ...eration a TX1 Main C Set TX1 Aerial or or TX2 Main C Set TX2 Aerial b Switch off Standby TX2 C Switch TX2 Off or or Switch off Standby TX1 C Switch TX1 off c Switch off Bypass Monitor 1 C Set MON1 Bypass off Switch off Bypass Monitor 2 C Set MON2 Bypass off d Switch to REMOTE with key lock switch on the Local Control Interface ...

Page 131: ... 112 0 112 5 113 0 113 5 114 0 114 5 115 0 115 5 116 0 116 5 117 0 117 5 118 0 118 5 119 0 CA Loop CTr Matching transformer C5 matcher decoupling module Fig 4 1 Setting characteristics for DVOR antenna CA Spacing a Matcher Decoupling module Lock nuts Antenna dome top view CTr CA X1 X2 X4 X3 C5 decoupling module only to antenna Fig 4 2 Position of capacitors CA CTr antenna dome C5 matcher decouplin...

Page 132: ...20 dB Supply cable for middle antenna 10 W CSB TX Monitor 1 Decoupling module x x with SB antennas only Fig 4 3 Test setup for matching measurements for DVOR antenna ASU PMC Simulator Transmitter CSB 8 dBm TEST O P SB 0 dBm Monitor I P R1 10 dB R3 50 W 3 dB Directional R2 coupler 20 dB cabinet 1 50 Fig 4 4 Simulator test setup for DVOR ...

Page 133: ...2 X71 X92 X97 X96 X94 X93 X99 X98 X95 X87 X86 X79 X78 X85 X82 X80 X77 X76 X72 X71 X84 X73 X83 X74 1 2 3 4 BP C control line BCPS Local PC operation via connector Local PC on top of the cabinet X82 X83 X84 X85 X81 X70 X72 X70 X72 X82 X83 X84 X85 X81 R1 CCP D X16 X16 control line BCPS NAV TX1 TX2 rear X80 X80 V2 V3 V1 X22 X8 X7 P16 Position of measurement point P16 on MSP VD front Probe not assemble...

Page 134: ...ror Nom Act Act Error Nom Act 1 0 0 3 14 4 5 28 8 7 43 2 9 57 6 11 72 0 13 86 4 15 100 8 17 115 2 19 129 6 21 144 0 23 158 4 25 172 8 27 187 2 29 201 6 31 216 0 33 230 4 35 244 8 37 259 2 39 273 6 41 288 0 43 302 4 45 316 8 47 331 2 49 345 6 Error spread TX1 TX2 Fig 4 6 Test log for simulator fault plot ...

Page 135: ...g 0 8 P2 P2 dB 10 log 0 8 dB 0 9691 V e g alarm limit for 20 power change dB 10 log P1 P2 P1 1 2 P2 dB 10 log 1 2 P2 P2 dB 10 log 1 2 dB 0 7918 Conversion of power change to a voltage change U is used instead of V dB 10 log P1 P2 P1 U12 R P2 U22 R U is according to the RF level dB 10 log U12 R U22 R dB 10 log U12 U22 dB 20 log U1 U2 dB 20 log U1 U2 10dB 20 U1 U2 U1 U2 x 10dB 20 If the above and be...

Page 136: ...DVOR 432 Installation Operation and Maintenance 4 32 Ed 01 04 ...

Page 137: ...IC MAINTENANCE NOTE The items marked with an asterisk are normally performed continuously via a conĆ nected RMMC Compare also measuring values with those of recorded data refer to section 5 2 4 Handling with subassemblies regard instructions in section 5 2 1 We recommend performing the maintenance activities listed in the table below once every month or six months The following measuring instrumen...

Page 138: ...h hands flat on a grounded surface beforehand e g on the ground bus of the work table The module can be picked up by its insulator immediately following this potential equalization It is safer to avoid touching the terminals Only remove short circuit links where absolutely necessary Place printed circuit boards only on tables with a conductive grounded working surface Leave individual subassemblie...

Page 139: ...sembly when this becomes necessary in any case for some other purpose Even then subassemblies should only be dusted if dust can be detected by means of a visual check They should always be dusted using a soft brush and if possible with the aid of a vacuum cleaner During such operations it is essential to observe all precautionary measures described in Section 5 2 1 for voltage sensitive semiconduc...

Page 140: ...y voltage to the RAM device Replacing Lithium battery We recommend switching the transmitter whose Lithium batteries are to be replaced over to standby operation and then switching it off The other transmitter will remain switched onto the anĆ tenna This will ensure that any interference resulting unintentionally from the replacement proceĆ dure will not affect the radiated signal A soldering iron...

Page 141: ...for Voltage Matching The BCPS has a fixed voltage of 54 V 3 for parallel operation with lead batteries It is not possible to vary the output voltage for operation with other types of battery e g nickel cadmium batteries An adjustment of 1 V is however possible on the front panel of the slide in units This is intended for optimization of the trickle charge The most important parameter for operation...

Page 142: ...erwise they should be carried out by the customer s own maintenance personnel as follows 5 3 3 2 Matching the Voltage NOTE This procedure is performed once during installation or if other battery types are used The battery must be connected Switch off the transmitters Using the switches on the front panel switch off the ACC units except the outer left one which has to be adjusted first Beginning w...

Page 143: ...ime The startup procedure comprises the following stages a Installation on site interconnection of the cells with the cell connectors and connection to the electrical installation b Filling with accumulator acid c Immediate subsequent charging or activation of the plates see 5 4 1 3 d Immediate subsequent activation in standby parallel mode These instructions do not cover the installation work but...

Page 144: ...r condensation from machines heating systems etc are unsuitable The sulphuric acid and the water should be kept in glass or plastic containers which must be sealed and covered carefully Dust and vapors which penetrate may contaminate originally pure liquids 5 4 1 2 2 Mixing Sulphuric Acid If the accumulator acid does not have a specified density specially purified water should be mixed with a high...

Page 145: ...antities specified in liters Kilograms can be converted to liters as follows Quantity in kg Acid density in kg l Quantity in l 5 4 1 2 3 Relationship between the Acid Density and the Temperature The nominal acid density of fixed batteries is valid at an acid temperature of 20 C If the temperature increases the density will be reduced by 0 0007 kg l per C if the temperature falls it will be increas...

Page 146: ...ash dangerously Splashes of acid should be neutralized and salts removed using a lukewarm soda soluĆ tion 100 g soda to 1 l water Care should be taken to ensure that no soda solution gets into the cells After treating with the soda solution clean with clear water and wipe dry Sufficient ventilation should be provided for the battery compartment The acid vapors are aggressive be careful of clothing...

Page 147: ...nd the batteries will not reach their full capacity Such damage can only sometimes be eliminated by means of a time consuming desulphating procedure As mentioned above in 5 4 1 1 the batteries may be supplied non filled in either a dry pre charged state or a non pre charged state This is not apparent externally except from the color of the plates The positive plate of activated batteries has a bro...

Page 148: ... If the density is too low higher density acid mixed acid must be added If the acid density is too high specially purified water must be used for topping up The temperature and acid level must be taken into consideration when measuring the density in other words the nominal acid density is valid when the acid level indicator is at max If water is lost during the charging procedure on account of ga...

Page 149: ... with data as No 4 in this table 2 Repeat Nos 7 to 9 until the acid density and batĆ tery voltage cease to change when the previous measurements and the nominal values are reached 8 Interval 1 9 Acid density and battery voltage measurements 10 Set acid density and acid level to nominal values Screw on inspection plugs If corrections are necessary recommence at No 7 11 Clean battery with water exte...

Page 150: ... water of the required quality at the point of installation In countries where the water quality is inadequate the specially purified or fully desalinated water in stock should be checked before use in accordance with the handling specifications of the battery manufacturer test chemicals supplied if required If the purified water does not meet the specifications it must be post treated ion exchang...

Page 151: ...R or MONITOR or LCP a cursor more appears Click twice for more information about transmitter or monitor or LCP The ensuing BIT results are displayed and can be interpreted or printed out 6 1 3 Fault Location Support DVOR 50 W and 100 W In addition to the BIT fault report see 6 1 2 the following fault location tables list typical faults which may occur in a DVOR installation The tables contain 5 co...

Page 152: ...Check of the Microprocessor of the MSG C 2 Step Fault A B C 2 1 Statuscheck by LEDs The bottom LED on the MSG C lights up continuĆ ously This is the Live lamp The bottom LED on the MSG C is off or lights up with briefinterruptions The processor is running ok The processor has stopped Every interruption is an indicaĆ tion of a processor fault Attempt a reset if the proĆ cessor stops again the MSG C...

Page 153: ...ADC 2 V281 28 V supplies CA 100 Nominal voltage 5 in the event of a fault reĆ place the power supply DCC MV or DCC 28 3 2 5 1 Synthesizer Synthesizeroperatingoutside of the frequency range from 108 to 118MHz MON1 2 Measurement Carrier Frequency Both monitors show a freĆ quencyerror Only one monitor shows a freĆ quencyerror Replace the synthesizer Replacecorr MSP VD or check cable see 8 6 8 7 3 2 5...

Page 154: ...her 4 2 1 Adjustment erĆ ror Modulationdepthcorrectly set Mod Depth 30 Hz AM Mod Depth Voice AM Mod Depth Identity AM Correctlysetmodulation depths 4 2 2 Limiting in the HF power secĆ tion CA 100 goes into limiting too early TX1 2 BITE ADC 1 ACM1 higher than normal Halve the set power Carrier Power Mod depth is increased Mod depth remains ReplaceCA 100 CA 100 defective Other fault 4 2 3 Carriermod...

Page 155: ...e fault in the transmitter Condition neither monitor may have more than 110 RF level otherwise measuring erĆ rors may occur TX1 2 BITE ADC 1 ACA1R normal ASB1R and ASB2R normal Otherwise check the imĆ pedance at the correĆ spondingtransmitterterĆ mination 5 2 1 9960 Hz Mod depth too low 9960 Hz Mod depth too low carrier level too great TX1 2 Adjustments Carrier power set correctly TX1 2Measurement...

Page 156: ... 1 MOD SBB 1 MOD SBB 2 MOD SBB 2 If all values are ok contiĆ nue with 5 2 2 SB Phase 5 2 2 Side band and carrier phases do not match 5 2 2 1 Wrongcarrier phase CSB First check carrier phase This value is not dependent from the adjustment TX 1 Measurement CSB RF Phase Measurement TX1 2 BITE ADC 1 BU_MOD_C1 TX1 2Miscellaneous MOD CSB 1 Sign Control BU_MOD_C1 should lie within the range from 2V to 8V...

Page 157: ...se control does not work Phase control always works only at the aerial transmitter NOTE This is because the radiated sideband signals are received for control via the center carĆ rier antenna The phase control of the standby transmitter cannot be checked The phase value of the standby transmitter is stoĆ red It is not controlled Replace modules in ASU BSG D PMC D Check flat ribbon cable W58 ASU In...

Page 158: ...ore than 10 kHz 0 2 kHz Otherwise replace the Synthesizer 6 1 3 8 Azimuth Indication 7 Step Fault A B C 7 1 One monitor good one monitor bad Search for the fault in the bad monitor and continue with 8 1 7 2 Bothmonitors show wrong vaĆ lues Check the following values on bothmonitors TX1 2 Adjustments AzimutAlignmentcorrectly set MON 1 2Measurement Mod Depth 9960 Hz AM 30 2 Mod Index 30 Hz FM 16 2 M...

Page 159: ...sĆ ent 8 2 Check with the testgenerator The test generator on the CSL generatesnormalnavigation signals in 45 increments of the azimuth as well as one without 30 Hz modulation and one without 9960 Hz auxiliary carrier With the hexadeciĆ mally coded switch on the CSL the corresponding chanĆ nel is set and is fed into the monitor instead of the demoĆ dulated HF signal MON 1 2Measurement TSG RF Level...

Page 160: ... The corresponding MSP is defective and must be reĆ placed 8 6 One monitor shows a wrong carrierfrequenĆ cy The monitor measures the freĆ quency of both transmitters wrongly or shows 0 kHz MSP VDdefective Replace MSP VD Both monitors measure the frequency of one transmitter correctly but measure the freĆ quency of the other wrongly Wrongfrequency but f 0 Frequency 0 kHz or 0 1 kHz Synthesizerdefec...

Page 161: ...aulty ReĆ place completely the LCP LCI LCD screendark LCP board live lamp on LC CPUon Check 15 V voltage supply from CSL If ok replace LCI board with LCD display If check fauls again reĆ place CSL 9 2 Live lamp on Transmitter rack LCP The display in MAIN STATUS field indicatesWARNING At least one sit file is missing or damaged in the LCP The RAM check states a fault Call Menu RC Management in ADRA...

Page 162: ...connector X82 to LCP and from BP C connectorX71 TX1 X72 TX2 to BP T connector X70 are defective or have come loose The LCP interrogates only processorswhichare switchedon Replace or fix cables 9 5 cont Both MSP VD and both MSG C are not interrogated At least one MSP VD and MSG Ccommunicateswith the LCP The LCP is presumably defecĆ tive The fault can be located possiĆ bly in the LCP or in the trans...

Page 163: ...ified of any work which may require operation of the system to be interrupted in accordance with national regulaĆ tions 6 2 1 1 2 Work on the equipment WARNING In order to avoid risks to persons and consequential damage to subassemblies the releĆ vant transmitter must be switched off The battery charged power supply BCPS must always be disconnected from the mains before any work other than measuri...

Page 164: ...em rack with both hands Remove the subassembly and lay it down on a bench with a grounded conductive worktop Pack the subassembly in an antistatic plastic bag and send it off to the manufacturer for repair To install a subassembly Eliminate any static body charges by touching the frame of the grounded system rack with both hands Remove the subassembly from the antistatic plastic bag Install the su...

Page 165: ...tor Processor See Fig 6 1 The LCP shows MON1 FAULTY or MON2 FAULTY due to to the failed processor on its LCD screen If both monitors fail the transmitter will be shut down Remedy Open front door of the rack CPU live lamp on the MSP must be lit If live lamp is off press reset button on MSP Close door again Perform login and enter password if more commands must be entered otherwise this step may be ...

Page 166: ...ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ÊÊ ASU INT ACC ËËËË ËËËË ËËËË ËËËË ËËËË ËËËË ACC ACC Modem Modem Modem ACC DCC 05 PMM ËË ËË ËË ËË ËË ËË ËË DCC 28 LCP MSP MSG C CPU live lamp green TXDA lamp green RXDA lamp green RXDA lamp TXDA lamp morse code indication pushbutton manual reset front side pushbutton manual reset earphone jack voice ATIS CPU live lamp green optional installed in ASU cabinet with 10...

Page 167: ...M If the CSL must be changed both TX1 and TX2 must be switched off beforehand The VAM MODEM and the DCC 3 05 subassemblies may be removed and installed when live The special design of their contacts prevents damage from occurring 6 2 3 2 Subassemblies in the Transmitter Rack and Power Supply The table below lists the work which may be necessary after a subassembly has been replaced Please also ref...

Page 168: ...rews remove cables loosen screws on front panel Adjust station frequency check RF level modulation depths phasing check RF level modulation depths phasing check blending modulation DVOR check output power readjustment of transmitter neccessary with calibrated MSP or external measuring equipment adjust or load all transmitter data calibrate monitor check AGC in MSP re load installation type configu...

Page 169: ...n the rack Lay the subassembly down on an electronically conductive surface e g on the special packaging provided c Remove the EPROM Identify the EPROM to be replaced by means of its inscription and note its orientation notch on one of the narrow sides Lever the EPROM slowly out of the base by carefully applying a flat pointed object e g a screwdriver to the narrow sides alternately d Fit the new ...

Page 170: ...ly on the LCP immediately after power on and hold pressed until screen of LCP contains menu information b Select one of the upcoming menu points here for DVOR 432 Configure DVOR 432 The LCP copĆ ies renames or deletes some files according to the selected systems This menu point does not appear again when the selection has been done once Finishing this procedure the LCP is ready Further configurati...

Page 171: ...the DIP FIX switches and jumpers Overview of subassemblies containing DIP FIX switches and jumpers No Subassembly Short name Reference number 1 2 3 4 5 6 Control and Selector Logic Modulation Signal Generator Control Monitor Signal Processor Local Control Panel Local Control Interface Local Control CPU Voice amplifier Backpanel Transmitter CSL MSG C MSP VD MSP VD MSP D LCP LCI LC CPU VAM BP T 8313...

Page 172: ...DVOR 432 Repairs Operation and Maintenance 6 22 Ed 01 04 ...

Page 173: ...ated AN400 Master 1 3 4 6 Slide switch for DME TACAN identity interface depends on installation S6 0 F Test signal select JUMPER POSITION DEFINITION REMARKS X7 X8 X11 Signal definition and drive select Morse code signal for DME X7 X8 1 2 2 3 positive logic device on current flow negative logic device on no current flow Normal operation X5 X6 X12 Signal definition and drive select to DME Station Op...

Page 174: ...umper set simultan X19 set open battery switch off at 1 7 V cell alternate to X20 X21 X20 set open battery switch off at 1 8 V cell alternate to X19 X21 X21 set open battery switch off at 1 875 V cell default setting X22 set open enabling automatic restore power management with PMM 5 and D VOR with PMM 5 and ILS X23 set open no monitor fault monitoring MON2 monitor fault monitoring MON2 default se...

Page 175: ...ers NMI Non Maskable Interrupt NMI function disabled default setting X5 2 3 1 2 EPROM type 27C040 EPROM type 27C020 default setting X6 1 2 2 3 RAM type 628128 RAM Typ 628512 default setting X7 set open backup battery switched on backup battery switched off default setting X8 set open multiple reset disabled if watch dog fails multiple reset enabled default setting 2 Modulation Signal Generator Con...

Page 176: ...e 27C040 with complete decoding default setting X6 1 2 2 3 RAM type 628128 RAM Typ 628512 default setting X7 set open the RAM is battery buffered i e the system parameter alarm storage and operating hours are maintained after system switch off RAM is not battery buffered i e the above mentioned data will be lost after system switch off default setting X8 set open multiple reset disabled if watch d...

Page 177: ...ircuit leaves out one interrupt NM function disabled default setting X25 feed in point for GND X28 set open default setting factory adjustment 3 Monitor Signal Processor MSP VD 83135 22300 22301 2 of 2 NOTE For the Monitor Signal Processor MSP D 83135 22400 the position of DIF FIX switĆ ches and jumpers is similar to MSP VD 83135 22300 position The MSP VD C D Ref Nr 83135 22301 replaces 22300 and ...

Page 178: ...B1 B6 A6 B6 A6 B2 B3 B4 B5 A2 A3 A4 A5 B2 B3 B4 B5 A2 A3 A4 A5 X8 9 11 14 ON S1 8 7 6 5 4 3 2 1 optionally normally not assembled local GND lock Keyboard Printer Ethernet X100 PC 1 COM1 7 CSL COM9 10 OIO IN DME NDB optional COM8 DME NDB DME NDB OIO OUT OFF Power Supply 1 1 1 1 1 1 1 1 1 1 JUMPER POSITION DEFINITION REMARKS bank X81 A1 B1 B2 B3 B1 B2 A3 B3 A4 B4 B5 B6 B4 B5 A6 B6 IAUX14 active low ...

Page 179: ...to RS422 full duplex default setting X95 X25 32 X24 X41 A1 B1 A10 B10 2 3 1 2 set serial port3 set to RS485 half duplex adds 100 W termination default signal RTS controls TX enable in UART mode X99 X16 23 X15 X40 A1 B1 A8 B8 1 2 not used serial port4 set to RS232 Port 4 COM4 X99 X16 17 X18 19 X20 21 X22 23 X15 X40 B1 B2 B3 B4 B5 B6 B7 B8 2 2 2 2 2 2 2 2 not used serial port4 set to TTL X99 X16 23 ...

Page 180: ...g on watch dog off if enabled by software X36 set open battery backup enabled battery backup disabled used for RTC on CPU RTC not buffered S1 S1 8 S1 7 S1 6 S1 5 S1 1 to 4 on off on off on off on off off input register 6 Bit 4 7 Bit 4 to GND Bit 5 to GND Bit 6 to GND Bit 7 to GND IN0 IN3 optional assembly Bypass not auto disabled default setting not used default setting not used TX1 ON Status not ...

Page 181: ...DIP FIX SWITCH POSITION DEFINITION REMARKS S1 S2 S3 on off signal path closed signal path opened between filĆ ters for measurement normal operation factory adjustment S4 2 1 2 4 signal path closed signal path opened for comparaĆ tor test normal operation factory adjustment 5 Voice Amplifier VAM option 83131 71701 ...

Page 182: ... X84 X85 X81 TX2 TX1 50W 100W TX2 TX1 50W 100W TX2 TX1 Setting example 100 W TX2 X82 X83 X84 X85 X81 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 X80 X80 TX2 TX1 X80 1 2 3 TX2 TX1 X80 1 2 3 Jumper POSITION DEFINITION REMARKS X80 1 2 2 3 TX2 TX1 Definition of TX1 or TX2 X84 X83 X85 X81 X82 1 2 2 3 2 3 2 3 50W TX1 TX1 TX1 Settings for 50 W TX1 X84 X83 X85 X81 X82 2 3 2 3 2 3 2 3 100W ...

Page 183: ...ION DEFINITION REMARKS S1 off on not used in AN 400 normal operation for test purposes and ground check no control via processor posĆ sible Decoders and counters are always enabled control via processor posĆ sible Decoders and counters can be controlled via procesĆ sor 6 Antenna Switch Control Doppler ASC D 83131 70612 ...

Page 184: ...s counter 0 if switch closed 1 if open with aid of resistance network R1 Zero crossings of sine and cosine funcĆ tions can be shifted in relation to the 750 Hz frequency over the enĆ tire 180 frequency range in steps of 0 7 180 28 Normal operation S1 to S8 closed 0 phase shift Individual phase values with open switches in degrees For test purposes S1 open 0 7 S2 open 1 4 S3 open 2 8 S4 open 5 6 7 ...

Page 185: ...kHz noise spectrum in the 9960 Hz signal S14 S15 open closed j0 8 cos x 0 2 cos x j und j0 8 sin x 0 2 sin x j Correction possibility for 1 5 kHz noise spectrum in the 9960 Hz signal S14 S15 closed closed Calls test functions stored in EPROM IC4 Test mode according to SecĆ tion 4 4 Check of decoupling beĆ tween sideband antennas S18 2 1 2 4 normal operation Test of stability of phase control S19 S...

Page 186: ...DVOR 432 Repairs Operation and Maintenance 6 36 Ed 01 04 ...

Page 187: ...DVOR 432 Operation and Maintenance General Annex Nextfield A Ed 01 04 Annex DVOR Nextfield Monitoring Installation and Alignment Procedure ...

Page 188: ...vised edition 01 04 Pages Ed No Remarks A to B 01 04 AN 1 to 44 01 04 Trademarks Microsoft and MS DOS are registered trademarks WINDOWS is a trademark of the Microsoft Corporation IBM is a registered trademark of the International Business Corporation Pentium is a registered trademark of the Intel Corporation ...

Page 189: ...he counterĆ poise NOTE The distance between middle antenna and the nextfield dipoles must not fall below 11 m Favorable are values between 12 5 and 17 m If several dipoles are installed the dipoles must have the same distance each 0 2 m to the middle antenna because all monitor inputs use the same gain control AGC The signal quality depends not only on the installation site of the antenna but also...

Page 190: ... mm above the counterpoise Secure the clamping band fastening of the dipole against twisting e g by fixing with a self tapping screw to the GFK mast tube Mount the cable conduit with associated fastenings below the counterpoise The conduit leads to the U girder in the center of the counterpoise Starting from nextfield dipole position mount low loss Cellflex cable 1 4 or adequate RF tight cable in ...

Page 191: ...late W63 2 MON2 Not used W82 Connect plate W62 3 optional MON1 Field dipole W81 Connect plate W61 4 field dipole alsomobile NOTE The installation is phased during first alignment with a fixed installed or mobile field dipole The field dipole is connected to monitor input MON1 Transmitter Rack rear side SB1 SB2 DME IDENT DIAGNOSIS Local PC LGM1 LGM2 DME LGM3 NDB ASU VAM ANALOG OIO LCP IN OIO LCP OU...

Page 192: ...DVOR 432 Installation Operation and Maintenance Annex Nextfield AN 4 Ed 01 04 ...

Page 193: ...28228 24039 28234 24039 28235 24039 28234 24039 28232 24039 28233 W62 W64 W65 W66 W61 W63 W69 W71 W70 W67 W68 1 2 3 4 5 6 BSE BSE 48VP2 ASU ASU C bar C bar ASU NAV ASU NAV NAV PMM PMM 5 48VP2 N TNC Legend AF to antennas A1 to A50 FUSE BOX to antenna A51 connecting plate ASU power supply A1 X1 A1 X4 X3 X1 Matcher Module Decoupling Module Option Coupling cables and connectors in combination with opt...

Page 194: ......

Page 195: ...DVOR 432 Operation and Maintenance Annex Nextfield L 1 Ed 01 04 CHAPTER 2 CHAPTER 3 For Chapter numbering only ...

Page 196: ...DVOR 432 General Operation and Maintenance Annex Nextfield L 2 Ed 01 04 ...

Page 197: ...on Configuration Data 4 2 6 Special Notes to DVOR with Nextfield Monitor 4 3 MATCHING OF ANTENNAS 4 3 1 Mechanical Preadjustments 4 3 2 Test Set Up recommended 4 3 3 Transmitter Setting 4 3 4 Matching Procedure 4 4 CHECK OF DECOUPLING BETWEEN SIDEBAND ANTENNAS 4 4 1 Test Set Up 4 4 2 Transmitter Setting 4 4 3 Check of Decoupling 4 5 CALIBRATION OF MONITORS 4 5 1 Preparations not applicable with Ne...

Page 198: ...LIGHT CHECK 4 12 1 Prerequisites 4 12 2 Correction of TX1 and Monitor 1 4 12 3 Correction of TX2 with Monitor 1 4 12 4 Adjustment of Monitor 2 with TX1 TX2 4 12 5 Check of Monitor Alarm Limits 4 12 6 Normal Operation 4 13 RELATIONSHIP BETWEEN THE MONITOR DISPLAY OF THE RF LEVEL AND THE POWER ...

Page 199: ...re should be installed on the available PC For installation procedure refer to Section 1 4 of Technical Manual ADRACS Ref No 83140 55324 4 1 2 Recommended Measuring Equipment 1 Multimeter 1 Scope dual trace 1 Thruline power meter with 1 W 10 W and 100 W probes range of frequency 108 118 MHz 1 Attenuator 20 dB 1 W 1 Directional coupler 1 RF cable approx 8 10 m 1 RF cable 30 m Various adapters N TNC...

Page 200: ...nstead of the antenna system proceed as follows Connect the 50 sideband cables of ASU to the inputs of the Antenna Simulator whereby antenĆ na output No 1 is to be connected to socket W1 etc Arrange simulator setup according to Fig 4 5 Carry out the alignment of DVOR 432 transmitter and monitor as described in the following how ever Sections 4 3 4 4 4 8 1 6 4 8 1 9 4 8 1 10 and 4 12 have to be omi...

Page 201: ...g On a Connect PC serial interface connector e g COM1 to connector Local PC on top of the cabinet using an interface cable zero modem cable b Switch on mains and set POWER switches of BCPS ACC modules cabinet to position ON c Close battery fuse switches battery fuse box inside shelter d Set switches TX1 TX2 on PMM cabinet front side to position ON e Set main switch NAV on PMM cabinet front side to...

Page 202: ...enu Items and Adjustment Masks From the Main Menu in ADRACS program the items Commands C and Activities A are used in the alignment procedure of the first setup Followingactivities masks are available composed of different data sets listed in section 4 3 of Technical Manual ADRACS Ref No 83140 55324 Configuration CF Error Curve EC Antenna Adjustment AA Alarm Limits M1 AL1 Test Generator TG Alarm L...

Page 203: ...B which are received from the sideband antennas and supplies it to the subassembly Monitor MSP D The interference signal reflected by the carrier anĆ tenna is about 20 to 30 dB greater than the received wanted signal The worse the matĆ ching of the antenna the more unfavorable is the signal to noise ratio and the inaccurate are the monitor measurement values Possibly it is indicated only less than...

Page 204: ...DVOR 432 Alignment Procedure Operation and Maintenance Annex Nextfield AN 14 Ed 01 04 ...

Page 205: ...al to the frame e Tighten capacitor plates with lock nuts Then check their distance once again 4 3 1 2 Quartz Trimmer Capacitor CTr Remove antenna cover Trimmer CTr is located in the center of the antenna feed Fig 4 3 For adjustment a screwdriver with a long blade is necessary a Turn CTr carefully quartz trimmer counterclockwise to the stop b Read the number of turns for CTr to adjust station freq...

Page 206: ...X 1 4 3 4 Matching Procedure a Set M1 AGC Adjustment value to M1 RF Level indication of 100 A TS M1 AGC Adjustment If necessary change M1 Digital Ctrl Attenuation dB NOTE Range of values 2 255 b Connect measuring cable to reflected output of directional coupler at antenna1 and remove 20 dB attenuator at input of monitor 1 NOTE See test setup Fig 4 4 c Set M1 RF Level indication to a minimum by alt...

Page 207: ...SBA SINUS Blen ding 50 0 g Set level of SB1 cosine to 50 0 A TS T1 SBA COSINUS Blending 50 0 4 4 3 Check of Decoupling a Switch through to antenna 50 Choose in the TX Settings window the command T1 Start Antenna Single Step and select Antenna 50 REMARK Do not use this command when working with an antenna simulator b Set M1 AGC Adjustment value to M1 RF Level indication of 100 A TS M1 AGC Adjustmen...

Page 208: ... again and readjusted if necessary e Insert test probe into antenna 49 and switch through to antenna 48 A TS by decrementing M1 RF Level indicates now decoupling of antenna 49 which should be again 160 Continue in this manner until all sideband antennas have been checked f Switch off TX1 C Switch TX1 Off g Select blending function 4 of BSG D subassembly NOTE Open DIP FIX switches S14 and S15 h Rem...

Page 209: ...u DVOR 432 Operation and Maintenance Alignment Procedure Annex Nextfield AN 19 Ed 01 04 4 5 CALIBRATION OF MONITORS 4 5 1 Preparations NOTE This procedure using the test generator on the CSL is not applicable with installed nextfield monitor option ...

Page 210: ...Menu INSTRUCTION C Commands A Activities Submenu DVOR 432 Alignment Procedure Operation and Maintenance Annex Nextfield AN 20 Ed 01 04 ...

Page 211: ...th Voice 0 f Set CSB power to nominal value 30 W or up to 100 W A TS T1 Carrier Power Measure the power W NOTE If there is a difference between the nominal power and the meaĆ sured power adjust the power by means of R1 of the Control CouĆ pler CCP D refer to Fig 4 6 BP T X16 g Preset levels of blending functions sine and cosine for SB1 and SB2 SB1 S A TS T1 SBA SINUS Blen ding SB1 C A TS T1 SBA CO...

Page 212: ...ingle channel mode of monitor 1 A TS M1 Single Channel OFF 4 6 1 3 Equality Check of Levels of Blending Signals a Measure levels of the demodulated blending signals using the scope at the following test points on ASU motherboard A connector TEST Fig 4 7 1b5 SB1 S 1b7 SB1 C 1b6 SB2 S 1b8 SB2 C b If difference of levels is greater than 5 correct levels using the of following commands SB1 S SBA SINUS...

Page 213: ...on Depth a Set T1 Mod Depth 30 Hz AM so that M1 Mod Depth 30 Hz AM A TS T1 Mod Depth becomes 30 30 Hz AM NOTE Range of values 0 40 0 4 6 1 6 Preadjustment of Azimuth a Set Start Antenna Normal Operation to antenna 1 A TS T1 Start Antenna Normal Operation Antenna 1 b Set azimuth alignment of transmitter to obtain the azimuth reading T1 Azimuth alignment of the monitor dipole NOTE Measurement only w...

Page 214: ...C Adjustment value to M2 RF Level indication of 100 A MC M2 AGC Adjustment If necessary change M2 Digital Ctrl Attenuation dB b 30 Hz AM mod depth A MC M2āMod Depth Check the M2 Mod Depth 30 Hz AM reading ā30Hz AM NOTE Use window MON2 Measurement Nominal value 30 0 1 0 c Subcarrier A MC Mon 2 Measurement ca Check the M2 Mod Depth 9960 Hz AM reading NOTE Use window MON2 Measurement Nominal value 30...

Page 215: ...gnment Procedure Annex Nextfield AN 25 Ed 01 04 c 9960 Hz mod depth A MC M2 Mod Depth 9960 Hz AM NOTE Nominal value 30 0 1 0 d 30 Hz FM mod index A MC M2 Mod Index 30Hz FM NOTE Nominal value 16 0 0 5 e Azimuth A MC M2 AZIMUTH NOTE Same as in 4 6 1 6b 0 2 f Switch off TX2 C Switch TX2 Off ...

Page 216: ...tenna Normal Operation to antenna 3 and record A EC T1 Start Antenna reading of M1 Azimuth Dipole 1 as 2nd value in test sheet Normal Operation Antenna 3 f Incrementing the next but one antenna is selected as 30 Hz phase reference Record azimuth reading of M1 Azimuth Dipole1 Con tinue this way until all 25 measurement values have been recorded The measured values have to increment in steps of 14 4...

Page 217: ...azimuth of transmitters has to be changed these azimuth alarm limits have to be readjusted 4 8 1 2 RF Level a Upper limit e g 123 A AL1 M1 RF Level Upper Limit b Lower limit e g 71 A AL1 M1 RF Level Lower Limit NOTE Range of values Upper Limit 100 150 Lower Limit 50 100 4 8 1 3 30 Hz AM Signal a Upper limit e g 34 5 A AL1 M1 Mod Depth 30 Hz AM UL b Lower limit e g 25 5 A AL1 M1 Mod Depth 30 Hz AM ...

Page 218: ...y in 0 0 A AL1 M1 Distortion on 9960 Hz LL 0 4 8 1 8 30 Hz FM Distortion not applicable with Nextfield a Choose M1 Distortion on 30 Hz FM reading A AL1 b Limit Add 2 to M1 Distortion on 30 Hz FM reading and key in A AL1 M1 Distortion on 30 this value as upper limit however max 5 Hz FM UL NOTE Range of value 0 99 9 4 8 1 9 Distortion of SSB Signal ME 10 kHz a Choose M1 Distortion on det LSB reading...

Page 219: ...tor 1 in section 4 8 1 Use Activity mask A AL2 Alarm Limits M2 4 9 BATTERY MONITORING NOTE The floating battery must be installed and connected Use activities mask BCPS BAT A BAT a Enter installed battery capacity A BAT Installed Batt Capa city Ah b When the Battery is fully charged set Set Batt Charge Level to A BAT Set Batt Charge the same value Installed Capacity Charge Level Level Ah NOTE Divi...

Page 220: ...ternal should be right because it was adjusted during acceptance and processes internal levels only It has to be re adjusted if the carrier power is changed The value can be lost if the battery backup jumper on MSP is opened d If need be adjust M1 Mod Depth 30Hz AM to reading of 30 5 M1 Calibrate Mod depth 30Hz AM e Adjust modulation depth of 9960 Hz AM to maximum with poten tiometers at the front...

Page 221: ...in the range of 0 7 0 8 V h Set M1 AGC 30Hz FM USB to M1 30Hz FM USB Level Dipole 1 M1āAGCā30HzāFMāUSB indication in the range of 0 7 0 8 V i If necessary adjust Mod Index M1 Calibrate Mod Index 30Hz FM M1āCalibrate Mod Index 30Hz FM NOTE Depends on transmitter frequency nominal value 16 2 j Set all further values according to section 4 8 Set alarm limits sym metrically related to the nextfield mo...

Page 222: ...es all Alarms and Warnings NOTE Allow system approx 30 s for initialization c Monitor 1 2 bypass OFF C Set both MON By pass off d Simulate monitor 1 and 2 alarm by e g disconnecting monitor inputs and check that after selected alarm delay TX1 is switched off and TX2 is switched on Remove monitor alarm conditions immediately after change over e Check that no MONITOR ALARM or BITE WARNING is on othe...

Page 223: ... indication M1 Mod Depth 30 Hz AM b Change 30 Hz AM mod depth for desired value according to A FC T1 Mod Depth 30Hz announcement of Flight Check Engineer AM NOTE Range of values 0 40 Note value c Recalibrate 30 Hz mod depth indication of monitor 1 for 30 A MC M1 Calibrate Mod Recommendation Perform this after flight check Depth 30 Hz AM 4 12 2 2 9960 Hz Mod Depth a In case of required mod depth in...

Page 224: ...ate Mod monitors Depth Ident Not applicable with Nextfield Monitoring M2 Calibrate Mod Depth Ident 4 12 2 5 Voice Modulation Depth Change voice mod depth for desired value according to announcement A FC T1 Mod Depth of Flight Check Engineer Voice AM NOTE Range of values 0 40 4 12 3 Correction of TX2 with Monitor 1 Correct TX2 in the same way as described for TX1 in section 4 12 1 A FC however set ...

Page 225: ...Depth 30 Hz AM b Record 30 Hz AM mod depth value of T1 Mod Depth 30 Hz AM c Reduce 30 Hz mod depth by approx 15 until both monitors alarm A FC T1 Mod Depth 30 Hz AM NOTE Range of values 0 40 0 d After check by Flight Check Engineer key in recorded value of b A FC T1 Mod Depth 30 Hz again AM 4 12 5 3 9960 Hz Modulation Depth Alarm a Check 9960 Hz mod depth indication M1 Mod Depth 9960 Hz AM A FC an...

Page 226: ... or or TX2 Main C Set TX2 Aerial b Switch off Standby TX2 C Switch TX2 Off or or Switch off Standby TX1 C Switch TX1 off c Switch off Bypass Monitor 1 C Set MON1 Bypass off Switch off Bypass Monitor 2 C Set MON2 Bypass off NOTE With Monitor Bypass Off the possibly running Standby transmitter is switched off d Switch to REMOTE with key lock switch on the Local Control Interface Ed 07 03 ...

Page 227: ... 111 0 111 5 112 0 112 5 113 0 113 5 114 0 114 5 115 0 115 5 116 0 116 5 117 0 117 5 118 0 118 5 119 0 CA Loop CTr Matching transformer C5 matcher decoupling module Fig 4 2 Setting characteristics for DVOR antenna CA Spacing a Matcher Decoupling module Lock nuts Antenna dome top view CTr CA X1 X2 X4 X3 C5 decoupling module only to antenna Fig 4 3 Position of capacitors CA CTr antenna dome C5 match...

Page 228: ... cable 30 m 20 dB Supply cable for middle antenna 10 W CSB TX Monitor 1 Decoupling module x x with SB antennas only Fig 4 4 Test setup for matching measurements for DVOR antenna ASU PMC Simulator Transmitter CSB 8 dBm TEST O P SB 0 dBm Monitor I P R1 10 dB R3 50 W 3 dB Directional R2 coupler 20 dB cabinet 1 50 Fig 4 5 Simulator test setup for DVOR ...

Page 229: ...P T TX2 X71 X92 X97 X96 X94 X93 X99 X98 X95 X87 X86 X79 X78 X85 X82 X80 X77 X76 X72 X71 X84 X73 X83 X74 1 2 3 4 BP C control line BCPS Local PC operation via connector Local PC on top of the cabinet X82 X83 X84 X85 X81 X70 X72 X70 X72 X82 X83 X84 X85 X81 R1 CCP D X16 X16 control line BCPS NAV TX1 TX2 rear X80 X80 Version 50 W V2 V3 V1 X22 X8 X7 P16 Position of measurement point P16 on MSP VD front...

Page 230: ... TEST solder side Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê BP BCPS Connector panel Rear Battery and power supply connection Mains connection and mains filter Version 100 W Fig 4 7 ASU rack rear side position of connector TEST motherboard A ...

Page 231: ...Ant No Nom Act Error Nom Act Act Error Nom Act 1 0 0 3 14 4 5 28 8 7 43 2 9 57 6 11 72 0 13 86 4 15 100 8 17 115 2 19 129 6 21 144 0 23 158 4 25 172 8 27 187 2 29 201 6 31 216 0 33 230 4 35 244 8 37 259 2 39 273 6 41 288 0 43 302 4 45 316 8 47 331 2 49 345 6 Error spread TX1 TX2 Fig 4 8 Test log for error plot ...

Page 232: ... P2 dB 10 log 0 8 P2 P2 dB 10 log 0 8 dB 0 9691 V e g alarm limit for 20 power change dB 10 log P1 P2 P1 1 2 P2 dB 10 log 1 2 P2 P2 dB 10 log 1 2 dB 0 7918 Conversion of power change to a voltage change U is used instead of V dB 10 log P1 P2 P1 U12 R P2 U22 R U is according to the RF level dB 10 log U12 R U22 R dB 10 log U12 U22 dB 20 log U1 U2 dB 20 log U1 U2 10dB 20 U1 U2 U1 U2 x 10dB 20 If the ...

Page 233: ...f transmitter and monitor data is performed with the ADRACS program For DVOR with nextfield option there are two data sets available depending on wether the station type DVOR Farfield or DVOR Nextfield is selected When performing this action regard station type CAUTION Ensure always that the correct data are uploaded or downloaded which concern to the station type Otherwise wrong data values are l...

Page 234: ...DVOR 432 Maintenance Operation and Maintenance Annex Nextfield AN 44 Ed 01 04 ...

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