Consilium Marine US 0009N011 30K WATT S BAND MARINE RADAR User Manual 303766P001 Rev C

Consilium Marine US Inc. 30K WATT S BAND MARINE RADAR 303766P001 Rev C

Contents

Users Manual 1

303766P001 Rev. C DECEMBER 2007 30KW S-BAND/U ANTENNA GROUP TYPE 03R039 09N-011 02R-039B TECHNICAL MANUAL
CONSILIUM SELESMAR s.r.l. Head Office & Plant Via Romita, 26 - 50020 Montagnana V. P. (Florence) Italy Tel.: +39/0571/68121 Telefax +39/0571/670798 303766P001 Rev. C DECEMBER 2007 S-BAND ANTENNA GROUP INCLUDING 12 FEET ANTENNA AND PEDESTAL WITH 30 kW TRANSCEIVER UPMAST TYPE 03R-039 09N-011 02R-039B TECHNICAL MANUAL
30 kW S-BAND/U ANTENNA GROUP FOREWORD A Rev. C APPLICATION FOR MANUAL REVISIONS Upon receipt of this manual, please fill in the necessary data. It is important that the addressee be the end user so that the operating personnel will receive all revisions to the manual EQUIPMENT NAME ............................................................................................. SERIAL No...................................... MODEL ...................................................... MANUAL TITLE .................................................................................................... ........................................................ MANUAL PART NUMBER......................... ISSUED INDEX............................... REVISION INDEX...................................... PURCHASING AGENCY...................................................................................... NAME OF USER................................................................................................... ADDRESS OF USER............................................................................................ ............................................................................................................. ............................................................................................................. ATTN:...................................................................................................
30 kW S-BAND/U ANTENNA GROUP FOREWORD B Rev. C RECORD OF CHANGES RCS CODE/REV. INDEX DATE PURPOSE OF THE CHANGE CHANGE REQUESTED BY Revision A 30/11/2000 First Emission Revision B June 2004 General Revision Revision C December 2007 Replaced pag. B and pag. 7.2. Request of Changes 034/07
30 kW S-BAND/U ANTENNA GROUP FOREWORD C Rev. C MANUAL TABLE OF CONTENTS Warnings Chapter 1 DESCRIPTION AND MAIN CHARACTERISTICS Chapter 2 OPERATION Chapter 3 FUNCTIONAL DESCRIPTION Chapter 4 PREVENTIVE MAINTENANCE Chapter 5 TROUBLESHOOTING Chapter 6 CORRECTIVE MAINTENANCE Chapter 7 PART LIST Chapter 8 INSTALLATION Chapter 9 FIGURES
30 kW S-BAND/U ANTENNA GROUP INDEX i Rev. C TABLE OF CONTENTS CHAPTER 1 DESCRIPTION AND MAIN CHARACTERISTICS .................................................... 1.1 1.1 Introduction................................................................................................................. 1.1 1.1.1 Manual Applicability.................................................................................................... 1.1 1.1.2 Purpose of the Equipment.......................................................................................... 1.1 1.1.3 List of Abbreviation ..................................................................................................... 1.2 1.2 Physical description.................................................................................................... 1.2 1.2.1 Composition................................................................................................................ 1.2 1.2.2 TRANSCEIVER Unit................................................................................................... 1.3 1.2.3 Antenna Pedestal S/U ................................................................................................ 1.4 1.2.3.1 03R-039 Pedestal....................................................................................................... 1.4 1.2.4 Antenna ...................................................................................................................... 1.5 1.3 Functional description................................................................................................. 1.5 1.3.1.1 Transceiver Unit ......................................................................................................... 1.5 1.4 Technical characteristics ............................................................................................ 1.6 1.4.1.1 Transceiver Unit ......................................................................................................... 1.6 CHAPTER 2 OPERATION .............................................................................................................. 2.1 2.1 Introduction................................................................................................................. 2.1 2.1.1 Purpose ...................................................................................................................... 2.1 2.2 Controls and indicators............................................................................................... 2.1 2.3 Semi-operative controls.............................................................................................. 2.1 CHAPTER 3 FUNCTIONAL DESCRIPTION .................................................................................. 3.1 3.1 Introduction................................................................................................................. 3.1 3.2 Functional description................................................................................................. 3.2 3.3 Transceiver unit technical description ........................................................................ 3.4 3.3.1 General....................................................................................................................... 3.4 3.3.2 POWER MOS Board .................................................................................................. 3.4 3.3.2.1 High Voltage Power Supply (HVPS) Generator Circuit.............................................. 3.4 3.3.2.2 Pulse Generator Circuit .............................................................................................. 3.5 3.3.2.3 15V ISO and 120 V Generation.................................................................................. 3.6 3.3.3 RTM CONT B Board................................................................................................... 3.6 3.3.3.1 Low Voltage Power Supply Circuit (LVPS) ................................................................ 3.6 3.3.3.2 Microprocessor and Gate Array ................................................................................. 3.7 3.3.3.2.1 General description .................................................................................................... 3.7 3.3.3.2.2 Functions Performed .................................................................................................. 3.7 3.3.3.2.3 Input Signals............................................................................................................... 3.8 3.3.3.2.4 Output Signals ............................................................................................................ 3.9 3.3.3.3 Pulse Length Generator Function ............................................................................ 3.10 3.3.3.4 Azimuth and Heading Line Signal Circuit Generator................................................ 3.11 3.3.3.5 Performance Monitor Function ................................................................................. 3.11 3.3.4 Solid State R.F. Head............................................................................................... 3.11 3.3.5 NIFB Assy................................................................................................................. 3.12 3.4 Antenna pedestal...................................................................................................... 3.13 3.4.1 General..................................................................................................................... 3.13 3.4.2 Pedestal Type 03R-039............................................................................................ 3.13 CHAPTER 4 PREVENTIVE MAINTENANCE................................................................................. 4.1 4.1 Introduction................................................................................................................. 4.1 4.2 Preventive maintenance procedure............................................................................ 4.1
30 kW S-BAND/U ANTENNA GROUP INDEX ii Rev. C CHAPTER 5 TROUBLESHOOTING............................................................................................... 5.1 5.1 Introduction................................................................................................................. 5.1 5.1.1 General....................................................................................................................... 5.1 5.1.2 Organisation ............................................................................................................... 5.1 5.1.3 Personnel ................................................................................................................... 5.1 5.1.4 Tools and Instruments................................................................................................ 5.1 5.2 Troubleshooting Procedures ...................................................................................... 5.2 5.2.1 Safety Precautions ..................................................................................................... 5.2 5.2.2 Troubleshooting Operations ....................................................................................... 5.2 CHAPTER 6 CORRECTIVE MAINTENANCE ................................................................................ 6.1 6.1 General....................................................................................................................... 6.1 6.1.1 Introduction................................................................................................................. 6.1 6.1.2 Safety Precautions ..................................................................................................... 6.1 6.1.3 Personnel ................................................................................................................... 6.1 6.1.4 Required Tools and Instruments ................................................................................ 6.1 6.2 Corrective maintenance procedures .......................................................................... 6.2 6.2.1 Replacement Procedures for the TRANSCEIVER Unit ............................................. 6.2 6.2.1.1 Replacement of a Fuse .............................................................................................. 6.2 6.2.1.2 Replacement of the POWER MOS Board.................................................................. 6.3 6.2.1.3 Replacement of the LNFE Assy ................................................................................. 6.3 6.2.1.4 Replacement of the RTM CONT B Board .................................................................. 6.4 6.2.1.5 Replacement of the NIFB Assy .................................................................................. 6.5 6.2.1.6 Replacement of the Magnetron .................................................................................. 6.5 6.2.2 Replacement Procedures for the Antenna Pedestal S/U Unit ................................... 6.5 6.2.2.1 Driving Belt Replacement........................................................................................... 6.5 6.2.2.2 Motor Replacement .................................................................................................... 6.6 6.2.2.3 Reduction Group Replacement .................................................................................. 6.6 6.2.2.4 3 Filter Replacement................................................................................................ 6.7 6.2.2.5 Rotating Joint Replacement ....................................................................................... 6.7 6.2.2.6 Antsign Board Replacement....................................................................................... 6.8 6.2.2.7 Optical Read-out Board Replacement ....................................................................... 6.9 6.2.2.8 Antenna Generator Disk Replacement ...................................................................... 6.9 6.2.3 Belt installation tension............................................................................................. 6.11 CHAPTER 7 PART LIST ................................................................................................................. 7.1 7.1 Introduction................................................................................................................. 7.1 7.1.1 Part List....................................................................................................................... 7.1 7.1.2 Part Location Illustration ............................................................................................. 7.1 7.2 Part list tables ............................................................................................................. 7.2 CHAPTER 8 INSTALLATION ......................................................................................................... 8.1 8.1 Introduction................................................................................................................. 8.2 8.1.1 Shipping...................................................................................................................... 8.2 8.1.2 Unpacking................................................................................................................... 8.2 8.1.3 Storage ....................................................................................................................... 8.3 8.1.4 Handling...................................................................................................................... 8.3 8.2 Specifications ............................................................................................................. 8.3 8.2.1 Dimensions and weights (also see outline drawings) ................................................ 8.3 8.2.2 Required power .......................................................................................................... 8.4 8.2.3 Environmental Data .................................................................................................... 8.4 8.3 Installation................................................................................................................... 8.4 8.3.1 Installation Principles.................................................................................................. 8.4 8.3.2 Mechanical installation ............................................................................................... 8.6 8.3.2.1 Pedestal with transceiver ........................................................................................... 8.6 8.3.2.2 Antenna ...................................................................................................................... 8.7 8.3.2.3 Safety Switch .............................................................................................................. 8.7 8.3.2.4 Performance Monitor Arm .......................................................................................... 8.8
30 kW S-BAND/U ANTENNA GROUP INDEX iii Rev. C 8.3.3 Electrical installation ...................................................................................................8.8 8.3.3.1 Multicore Cable........................................................................................................... 8.8 8.3.3.2 Safety Switch .............................................................................................................. 8.9 8.3.3.3 Performance Monitor Arm .......................................................................................... 8.9 8.3.3.4 Grounding................................................................................................................... 8.9 8.3.3.5 Installation Check-out ............................................................................................... 8.10 8.3.4 Pre Setup Procedures .............................................................................................. 8.10 8.3.4.1 Antenna Turning Motor power Voltage and Phase .................................................. 8.10 8.3.4.2 Head Line alignment procedure ............................................................................... 8.11 8.4 Installation figures and drawings .............................................................................. 8.12 8.5 Annex........................................................................................................................ 8.24 CHAPTER 9 FIGURES.................................................................................................................... 9.1 Figure 9.1.1 30 kW S-BAND/U Antenna Group - Overall View ...................................................... 9.2 Figure 9.1.2 RTM 30S/U/D - External View.................................................................................... 9.3 Figure 9.1.3 30 kW S-BAND/U Antenna Group Internal View........................................................ 9.4 Figure 9.1.4 03R-039 Antenna Pedestal External View ................................................................. 9.5 Figure 9.1.5 03R-039 Antenna Pedestal Internal View .................................................................. 9.6 Figure 9.1.6 30 kW S-BAND/U Antenna Group Block Diagram ..................................................... 9.7 Figure 9.1.7 RTM 30S/U/D Unit - Internal View.............................................................................. 9.8 Figure 9.1.8 RTM 30S/U/D Unit - RTM CONT B Board ................................................................. 9.9 Figure 9.1.9 30 kW S-BAND/U Antenna Group Functional Block Diagram ................................. 9.10 Figure 9.1.10 POWER MOS Board - HVPS Generator Circuit ...................................................... 9.11 Figure 9.1.11 POWER MOS Board - Pulse Generator Circuit ....................................................... 9.12 Figure 9.1.12 RTM CONT B board - LVPS Circuit ......................................................................... 9.13 Figure 9.1.13 RTM CONT B board – Microprocessor .................................................................... 9.14 Figure 9.1.14 RTM CONT B board - AZ and HL Signals Generator Circuit................................... 9.15 Figure 9.1.15 Performance Monitor Circuit..................................................................................... 9.16 Figure 9.1.16 RF Head - Functional Block Diagram....................................................................... 9.17 Figure 9.1.17 NIFB Assy................................................................................................................. 9.18 Figure 9.1.18 RTM 30S/U/D Cabling .............................................................................................. 9.19 Figure 9.1.19 30 kW S-BAND/U Antenna Group - RTM 30S/U/D Unit Front View ........................ 9.20 Figure 9.1.20 30 kW S-BAND/U Antenna Group - RTM 30S/U/D Unit Internal View .................... 9.21 Figure 9.1.21 RTM 30S/U/D Unit - Particular of the Magnetron..................................................... 9.22 Figure 9.1.22 RTM 30S/U/D Unit - RTM CONT B board................................................................ 9.23 Figure 9.1.23 Antenna Pedestal S/U Unit - External View ............................................................. 9.24 Figure 9.1.24 Chart 1 ...................................................................................................................... 9.25 Figure 9.1.25 Chart 2 ...................................................................................................................... 9.28 Figure 9.1.26 Chart 3 ...................................................................................................................... 9.29 Figure 9.1.27 Chart 4 ...................................................................................................................... 9.30 Figure 9.1.28 Chart 5 ...................................................................................................................... 9.31 Figure 9.1.29 RTM 30S/U/D Unit - External View .......................................................................... 9.32 Figure 9.1.30 RTM 30S/U/D Unit - Internal View............................................................................ 9.33 Figure 9.1.31 RTM 30S/U/D Unit - Internal View of the Cover....................................................... 9.34 Figure 9.1.32 Antenna Pedestal S/U Unit with Performance Monitor - External View ................... 9.35 Figure 9.1.33 Antenna Pedestal S/U Unit - Internal View............................................................... 9.36 Figure 9.1.34 Antenna Pedestal S/U Unit - Particular of the Motor................................................ 9.37 Figure 9.1.35 30 kW S-BAND/U Antenna Group............................................................................ 9.38 Figure 9.1.36 RTM 30S/U/D Unit - Internal View............................................................................ 9.39 Figure 9.1.37 Antenna Pedestal S/U Unit Normal Speed - External View ..................................... 9.40 Figure 9.1.38 Antenna Pedestal S/U Unit Normal Speed - Internal View ...................................... 9.41
30 kW S-BAND/U ANTENNA GROUP INDEX iv Rev. C LIST OF TABLES Table 1.1.1 - List of Abbreviations............................................................................................................. 1.2 Table 1.2.1 - Equipment, Accessories And Document Supplied .............................................................. 1.3 Table 1.2.2 - Transceiver Unit Composition.............................................................................................. 1.3 Table 1.4.1 - Transceiver Unit Technical Characteristics ......................................................................... 1.6 Table 1.4.2 - Pedestal Type 03r-039 Technical Characteristics ............................................................... 1.7 Table 1.4.3 - Pedestal Type 03R-040 Technical Characteristics.............................................................. 1.7 Table 1.4.4 - 12’ S Band Antenna Technical Characteristics ................................................................... 1.7 Table 2.3.1 - Semi-operative Controls Location of the the RTM 30S/U/D CABINET ............................... 2.1 Table 2.3.2 - Semi-operative Controls Location of the RTM CONT B board............................................ 2.1 Table 3.3.1 - Microprocessor Input Signals .............................................................................................. 3.8 Table 3.3.2 - Gate Array Input Signals...................................................................................................... 3.9 Table 3.3.3 - Microprocessor Output Signals............................................................................................ 3.9 Table 3.3.4 - Gate Array Output Signals ................................................................................................. 3.10 Table 4.2.1 - List of Recommended Tools and Instruments ..................................................................... 4.2 Table 4.2.2 - List of the Preventive Maintenance Cards ........................................................................... 4.2 Table 5.1.1 - List of Recommended Instruments ...................................................................................... 5.1 Table 5.2.2 - List of Main Possible Failures .............................................................................................. 5.2 Table 6.2.1 - List of the Corrective Maintenance Procedures................................................................... 6.2 Table 7.2.1 - List of Items Shown in Chapter 9, Fig 7.2.1 30 kW S-BAND/U Antenna Group .......... 7.2 Table 7.2.2 - Parts List of the RTM 30S/U/D Unit ..................................................................................... 7.2 Table 7.2.3 - Parts List of the Antenna Pedestal S/U Unit Type 03R-039 ................................................ 7.2
30 kW S-BAND/U ANTENNA GROUP WARNINGS 1 Rev. C WARNINGS HIGH VOLTAGE Radar equipment requires the use of high voltage, which can cause injury, or loss of life. Danger exists only when the units are opened exposing internal circuits, as when servicing the equipment. The Manufacturer Radar has been carefully designed to protect personnel from possible injury from high voltages. Nevertheless, it is recommended that the Line Switch always be opened as an added protection when inspecting or servicing the equipment. Although every effort has been made to eliminate danger to personnel, no responsibility is accepted for any injury or loss of life suffered in connection with this equipment. X-RAY RADIATION X-RAY radiation may be generated by Transceiver units and care must be taken to avoid possible harmful effects when they are opened for maintenance. When power is on, care should be taken not to approach closer than 1 ft. from the unit unless front cover is in place. RADIO-FREQUENCY RADIATION Harmful effects (particularly to the eyes) may be caused by exposure of any part of the human body to radio-frequency mean power densities in excess of 100 mW/cm2. This power density is exceeded at a distance of 1 ft. or less, from the 12 ft. X-Band aerial (when stationary). The system is however designed to disable radiation when the antenna is not rotating. The pedestals have also been predisposed for the installation of an external safety switch, which can be mounted on, or near the platform. This switch removes power from the Pedestal eliminating the possibility of accidental operation during servicing and also causes disabling of transmission. Whenever it is necessary to disconnect the waveguide system from a radar transmitter for maintenance purpose, the transmitter output should, when practicable, be terminated in a matched load. If this is not possible, care should be taken to avoid standing in front of an open-ended waveguide from which power is being radiated. NEVER look down a waveguide from which power is being radiated. SAFETY SWITCH The Unit is provided of a safety switch, which disable the Antenna movement during maintenance operations.
30 kW S-BAND/U ANTENNA GROUP WARNINGS 2 Rev. C SAFETY PRECAUTIONS Purpose The safety precautions described in this paragraph are applicable to 30 kW S-BAND/U Antenna Group. Depending upon the material to be highlighted, the following attention letter headings are used in the technical manual content. WARNING THIS IS OPERATING OR MAINTENANCE PROCEDURE, PRACTICE, CONDITION AND STATEMENT WHICH. IF NOT STRICTLY FOLLOWED, COULD RESULT IN INJURY TO OR DEATH OF PERSONNEL WARNING THIS IS OPERATING OR MAINTENANCE PROCEDURE, PRACTICE, CONDITION AND STATEMENT WHICH. IF NOT STRICTLY OBSERVED, COULD RESULT IN DAMAGE TO, OR DESTRUCTION OF, UNIT OR LOSS OF EMISSION EFFECTIVENESS. NOTE An essensial operating or maintenance procedure, condition or statement which must be highlighted Whenever a precaution, relating specifically to a part of the technical manual is needed, the information is given in the relevant part of the manual. Warnings and Cautions precede applicable text. Safety Operations During normal operation (front cover closed), the unit can be quickly disconnected from the main power line, setting to OFF the relevant circuit breaker located on the electric switchboard. During maintenance (front cover opened) it is possible to turn-on the unit by setting to SERVICE MODE the SW2 switch, mounted on the RTM Supply Assy. This switch is connected in parallel with the relay, controlled by the POWER ON command, and during normal operation must be set to NORMAL. During maintenance, in order to prevent RTM occasional turning-on it is better to disconnect and insulate, momentarily, PWON terminal from the relevant terminal board. NOTE Main power line is always present on terminal board and on fuses
30 kW S-BAND/U ANTENNA GROUP WARNINGS 3 Rev. C Safety Summary The following are general safety precautions that are not related to any specific procedure and therefore do not appear elsewhere in this technical manual. These are recommended precautions that personnel must understand and apply during most phases of operation and maintenance. KEEP AWAY FROM LIVE CIRCUIT Operating personnel must at all times observe all safety regulations. Do not replace components or make adjustments inside the unit with the high voltage supply turned ON. Under certain conditions, dangerous potentials may exist when the power breaker is in the OFF position, also due to charges retained by capacitors. To avoid casualties, always remove power and discharge to ground a circuit before touching it. DO NOT SERVICE OR ADJUST ALONE Under no circumstances should any person initiate servicing or adjusting the unit except in the presence of someone capable of helping help. RESUSCITATION Personnel working with or near high voltage should be familiar with modern methods of resuscitation. Such information may be obtained from the Bureau of Medicine and Surgery. Warning Information The following warnings appear in the text of this technical manual, and are repeated here for emphasis. WARNING USE EXTREME CARE WHEN WORKING ON THE UNIT ONCE THE COVER HAS BEEN OPENED. THE MAGNETRON ASSEMBLY OPERATES AT VOLTAGES THAT MAY PROVE FATAL WARNING BEWARE OF HIGH VOLTAGE CAPACITORS. IT IS NECESSARY TO SHORT-CIRCUIT THEIR LEADS BEFORE PERFORMING ANY MAINTENANCE ACTION ON THEM. WARNING ON THE ELECTRIC SWITCHBOARD, SET TO OFF THE POWER BREAKER DEDICATED TO THE PRESENT EQUIPMENT AND HANG TO IT A PLACARD READING: “WORK IN PROGRESS-DO NOT SWITCH ON”
30 kW S-BAND/U ANTENNA GROUP WARNINGS 4 Rev. C WARNING USE EXTREME CARE WHEN WORKING ON THE EQUIPMENT ONCE THE FRONT COVER HAS BEEN OPENED. THE MAGNETRON ASSEMBLY OPERATES AT VOLTAGES THAT MAY PROVE FATAL WARNING SET MAIN LINE BREAKER TO OFF BEFORE REPLACING ANY FUSE. FUSES ARE UNDER VOLTAGE LEVELS WHICH MAY PROVE FATAL.
30 kW S-BAND/U ANTENNA GROUP DESCRIPTION AND MAIN CHARACTERISTICS 1.1 Rev. C CHAPTER 1 DESCRIPTION AND MAIN CHARACTERISTICS 1.1 Introduction 1.1.1 Manual Applicability The present technical manual provides information, data and procedures relevant to the general description, the operation, the functional description, the scheduled maintenance, the troubleshooting, the corrective maintenance and the replaceable parts’ list of the S-Band 30 kW Antenna Group, from now on called 30 kW S-BAND/U Antenna Group. The present technical manual contents is arranged in 10 Chapters as follows: Warnings Chapter 1 DESCRIPTION AND MAIN CHARACTERISTICS Chapter 2 OPERATION Chapter 3 FUNCTIONAL DESCRIPTION Chapter 4 PREVENTIVE MAINTENANCE Chapter 5 TROUBLESHOOTING Chapter 6 CORRECTIVE MAINTENANCE Chapter 7 PART LIST Chapter 8 INSTALLATION Chapter 9 FIGURES 1.1.2 Purpose of the Equipment The 30 kW S-BAND/U Antenna Group (Chapter 9, Figure 9.1.1), when connected to a RTM-S Power Supply and to a Display Unit, performs the echoes transmission and reception in the surrounding area. The equipment purposes are the following: - to transmit and to receive the RF to/from the S-Band Antenna Unit - to accept and to process data from the S-Band Antenna - to receive radar controls from the Display Unit - to transmit radar data and controls to the Display Unit - to accept mains AC voltage from the Ship Main Line - to control the antenna pedestal start and movement
30 kW S-BAND/U ANTENNA GROUP DESCRIPTION AND MAIN CHARACTERISTICS 1.2 Rev. C 1.1.3 List of Abbreviation Measurement abbreviations are according to MIL STD-12; other terms and abbreviations used in the present manual are listed in Table 1.1.1 - List of Abbreviations. Table 1.1.1 - List of Abbreviations ABBREVIATION MEANINGS AC AZ DC dB dBm HL HV IF LED LO LV MDS MTBF PRF PS RC RF R.P.M. RTM STC TTL VCO WG Alternating Current Antenna Azimuth Pulse Direct Current Decibel Decibel referred to 1 mW Heading Line High Voltage Intermediate Frequency Light Emitting Diode Local Oscillator Low Voltage Minimum Detectable Signal Mean Time Between Failures Pulse Repetition Frequency Power Supply Resistor - Capacitor Radio Frequency Revolutionsper Minute Receiver Transmitter Modulator Sensitivity Time Control Transistor-Transistor Logic Voltage Controlled Oscillator Waveguide 1.2 Physical description 1.2.1 Composition The 30 kW S-BAND/U Antenna Group (Chapter 9, Figure 9.1.1) is composed of the following Units: - TRANSCEIVER (pos. 1) which generates the transmitting pulses and converts the received echoes - Antenna Pedestal S/U (pos. 2) which allows the Antenna rotation - the 12' transmitting/receiving Antenna (pos. 3) The group is designed for maximum resistance to the severe environmental conditions in which they must operate. Its weight and dimensions are limited to reduce the effect of load on the masts.
30 kW S-BAND/U ANTENNA GROUP DESCRIPTION AND MAIN CHARACTERISTICS 1.3 Rev. C Table 1.2.1 - Equipment, Accessories And Document Supplied lists the Equipment, Accessories and Document Supplied. Table 1.2.1 - Equipment, Accessories And Document Supplied POS. DESCRIPTION CODE WIDTH(mm) HEIGHT(mm) DEPTH (mm) WEIGHT(kg) 1 30 kW S-Band Receiver Transmitter Modulator Up and Down 09N-011 535 481 297 2 S Band Antenna Pedestal Normal Speed 03R-039 660 650 430 115 3 12' S Band Antenna 02R-039/B Length 3662 (circle 3700) 80 4 Technical manual 303733P001 1.2.2 TRANSCEIVER Unit The TRANSCEIVER is composed of a metal cabinet (Chapter 9, Figure 9.1.2 pos. 1), made of Alloy, treated with anticorrosive paint in order to be resistant to the saline atmosphere. The cover (Chapter 9, Figure 9.1.2 pos. 2) is closed by means of six screws (Chapter 9, Figure 9.1.2 pos. 3). The cabinet is fitted with four rear hoisting attacks (Chapter 9, Figure 9.1.2 pos. 4) fixing the unit to the S Band Antenna Pedestal. In the bottom part of the cabinet, is located the screw (Chapter 9, Figure 9.1.2 pos. 5) for the ground connection of the Unit to the ship structure. The connection with the S Band Antenna Pedestal is performed by means of two cables, which exit the Unit through a communicating hole (Chapter 9, Chapter 9, Figure 9.1.3 pos. 7). The connection with the RTM-S Power Supply and to the Display Unit, through the RTM-S Power Supply, is performed by means of two cables entering in the unit through two stuffing tubes located on the lateral part of the unit. When the cables are not mounted, the hole is closed by a plate (Chapter 9, Figure 9.1.2 pos. 6) provided with a gasket. Table 1.2.1 - Equipment, Accessories And Document Supplied lists the cabinet dimensions; Table 1.2.2 - Transceiver Unit Composition lists the main assemblies composing the Unit and, with reference to Chapter 9, Figure 9.1.3, their position inside the Unit. Table 1.2.2 - Transceiver Unit Composition DESCRIPTION Position Noise Source 1 Magnetron 2 LNFE Assy 3 POWER MOS Board 4 RTM CONT B Board 5 NIFB Assy 6
30 kW S-BAND/U ANTENNA GROUP DESCRIPTION AND MAIN CHARACTERISTICS 1.4 Rev. C 1.2.3 Antenna Pedestal S/U The Pedestal, which supports the 12’ S-Band Antenna, can assume the configurations: - 03R-039: equipped with a three-phase electrical motor and an optical sensor for the Antenna position detection 1.2.3.1 03R-039 Pedestal The Pedestal (Chapter 9, Figure 9.1.4), consists mainly of: - The Motor Group (pos. 1) - The Motor Group function is to provide the necessary power generate to the antenna rotation - The Rotating Flange (pos. 2) - The Rotating Flange’s function is to transfer to the antenna the motion provided by the Driving Belt. Flange the 12’ antenna is mounted on the Rotating; the antenna is fixed to the Rotating Flange by means of studs and nuts (pos. 3 and 4) - The S Band Rotating Joint (pos. 5) - The joint is rotating with the antenna, and the lower part, called Cable with Connector Assy, is fixed to the Pedestal structure through a proper bar. The fixed part is connected with the cable from the TRANSCEIVER which enters the Pedestal through a flange. When the Pedestal is not connected, the hole is closed with a cover provided with a gasket (pos. 8) By loosing and removing four nuts (Chapter 9, Figure 9.1.4 pos. 7) it is possible to remove the cover (Chapter 9, Figure 9.1.4 pos. 8) and to access to the inside of the pedestal. By referring to Chapter 9, Figure 9.1.5, the following components can be localised in the pedestal: - The Gear Reduction Group (pos. 1) - The Gear Reduction Group’s function is to reduce the motor angular velocity - The Driving Belt (pos. 2) - The Driving Belt function is to transmit the motion provided by the Gear Reduction Group to the antenna. As result, the antenna angular speed is greater than 20 rpm for 50 Hz and for 60 Hz - The Indicator Unit (pos. 3) - The Indicator Unit function is to generate the Heading Line (HL) pulse and the pulses indicating the antenna position (AZ) - The Antisign Board (pos. 4) - The Board receives the pulses from the Indicator Unit and sends them to the TRANSCEIVER - The Cable for the Signal - The Cable function is to connect the antenna to the Transceiver equipment. The upper part of the cable is the Rotating Joint (Chapter 9, Figure 9.1.4 pos.
30 kW S-BAND/U ANTENNA GROUP DESCRIPTION AND MAIN CHARACTERISTICS 1.5 Rev. C 5) rotating with the antenna,. The lower part, called Cable with Connector Assy (pos. 5), is fixed to the Pedestal structure through a proper bar (pos. 6). The fixed part is connected to the cable from the TRANSCEIVER, which enters the Pedestal through a flange; when the Pedestal is not connected, the hole is closed with a cover provided with a gasket (Chapter 9, Figure 9.1.4 pos. 6) - The Power Supply Cable - The Power Supply Cable function is to provide the necessary power to the pedestal internal circuits and components. It connects the Pedestal to the TRANSCEIVER and allows the signals transmission from the Unit to the TRANSCEIVER and the feeding of the Motor Group. The cable comes out the Pedestal trough the proper stuffing tube - The Stuffing Tube for the Safety Switch The Pedestal can be equipped with the Performance Monitor Arm as part of the Performance Monitor kit (Chapter 9, Figure 9.1.1 pos. 4). Table 1.2.1 - Equipment, Accessories And Document Supplied lists the Pedestal dimensions. 1.2.4 Antenna The antenna available is the 12’ S Assy 02R-039/B. The antenna is mounted on the Pedestal by means of its support. The Antenna is fixed to the Support by means of eight bolt and nuts. Table 1.2.1 - Equipment, Accessories And Document Supplied lists the Antenna dimensions. 1.3 Functional description 1.3.1 Transceiver Unit The 30 kW S-Band Up or Down TRANSCEIVER is mainly divided into Receiver and Transmitter sections both enclosed in a solid state modular R.F. Head (Chapter 9, Figure 9.1.6). The Transmitter generates the R.F. energy in the S-Band range and pulses, modulated with a peak power of 30 kW; the pulses, whose length and PRF are in accordance with the selections, are radiated by the Antenna. The transmission pulses can be selected on Short, Medium and Long Pulse according to the range scale selected on the Display Unit. The Receiver enables the echo reception and subsequent amplification in NIFB Assy. The Unit also includes the circuits to generate the voltage required for its operation.
30 kW S-BAND/U ANTENNA GROUP DESCRIPTION AND MAIN CHARACTERISTICS 1.6 Rev. C 1.4 Technical characteristics 1.4.1 Transceiver Unit Tables from Table 1.4.1 - Transceiver Unit Technical Characteristics to Table 1.4.4 - 12’ S Band Antenna Technical Characteristics list the main features with respect to the inherent capabilities of the present configuration. Table 1.4.1 - Transceiver Unit Technical Characteristics DIMENSIONS AND WEIGHTS Length 665 mm Width 410 mm Height 1000 mm Weight 130 Kg REQUIRED POWER 220/380 VAC, 3Φ, 50 Hz or Alternatives 255/440 VAC, 3Φ, 60 Hz Power consumption 4200 VA Rotating Speed > 20 Antenna RPM ENVIRONMENTAL DATA Operating temperature -25°C / +55°C Storage temperature -25°C / +70°C Relative humidity Up to 95% at +40° Water resistance, Salt spray, Vibrations etc as per IEC 60945 Wind resistance, relative wind 100 knots CHARACTERISTICS Modulator Solid state (MOSFET) Nominal Peak Power 30 kW Frequency range 3040÷3060 MHz Nominal pulse lengths 60/250/800 ns Pulse repetition frequency 3000/1500/750 Hz IF amplifier Logarithmic IF centre frequency 50 MHz IF- Bandwidth 16÷20/4÷5/1,5÷2 MHz Overall noise figure 3,5 dB
30 kW S-BAND/U ANTENNA GROUP DESCRIPTION AND MAIN CHARACTERISTICS 1.7 Rev. C Table 1.4.2 - Pedestal Type 03r-039 Technical Characteristics DIMENSIONS AND WEIGHTS Length 3662 mm Width 550 mm Height 340 mm Weight 90 Kg Swing circle 3700 mm CHARACTERISTICS Antenna type End Fed Slotted Waveguide Frequency 3040 ÷ 3060 MHz Polarisation Vertical Horizontal Beam –width at –3 dB 2° Horizontal side lobes: 10° better than Outside 10° better than 26 dB 30 dB Vertical Beam –width at –3 dB 22° Table 1.4.3 - Pedestal Type 03R-040 Technical Characteristics PARAMETER DATA Power Supply: Star Connection Electrical Motor Power 380V 50 Hz/440V 60 Hz 3Φ 6.4 KVA Rotating Speed: > 40 rpm at 100 knots Environmental Conditions: Operating Temperature: Storage Temperature: Relative Humidity: Rain Proof: Wind Speed: Heater (Optional) -25°C thru to +55°C -25°C thru to +70°C up to 95% at 40°C According to IEC 945 Chapt. 8 para 8 100 Knots for operation in environmental temperature below -20°C Table 1.4.4 - 12’ S Band Antenna Technical Characteristics PARAMETER DATA Array Type End Fed Slotted Waveguide Frequency 3023 - 3075 MHz Polarisation Vertical Horizontal Beam-Width At -3 Db 2° Vertical Beam-Width At -3 Db 22° Horizontal Side Lobes: 10° Better Than Outside 10° Better Than 26 dB 30 dB Environmental Conditions: Operating Temperature: Storage Temperature: Relative Humidity: Rain Proof: Wind Speed -25°C thru to +55°C -25°C thru to +70°C up to 95% at 40°C According to IEC 945 Chapt. 8 para 8 100 Knots
30 kW S-BAND/U ANTENNA GROUP OPERATION 2.1 Rev. C CHAPTER 2 OPERATION 2.1 Introduction 2.1.1 Purpose The present Chapter provides the operating instructions, information and procedures required to enable operating personnel to efficiently and effectively operate on the 30 kW S-BAND/U Antenna Group in accomplishing its designated tasks. The Chapter is divided in: Paragraph 2.2 Controls and indicators Paragraph 2.3 Semi-operative controls The equipment does not require personnel on steady watch conditions, but requires general monitoring during normal operating situations. Since the equipment has no operating controls, paragraph 2.2 is not applicable. All semi-operative controls are located inside the unit. 2.2 Controls and indicators Since the equipment has no operating controls, this paragraph is not applicable. 2.3 Semi-operative controls The 30 kW S-BAND/U Antenna Group equipment is fitted with some semi-operative controls only on the TRANSCEIVER Unit; these controls are accessible when the unit front cover is opened. The semi-operative control location is shown in Chapter 9, Figure 9.1.7 and in Figure 9.1.8 and their description is given in Table 2.3.1 - Semi-operative Controls Location of the the RTM 30S/U/D Cabinet and in Table 2.3.2 - Semi-operative Controls Location of the RTM CONT B board. Table 2.3.1 - Semi-operative Controls Location of the the RTM 30S/U/D Cabinet POS. CODE TYPE FUNCTION 1 SW2 Interlock TRANSCEIVER cover interlock switch for disabling the High Voltage generation Table 2.3.2 - Semi-operative Controls Location of the RTM CONT B board
30 kW S-BAND/U ANTENNA GROUP OPERATION 2.2 Rev. C POS. CODE TYPE FUNCTION 1 P17 Switch It defines the S1 rotary switch functions 2 S1 10-position rotary switch It selects the function to be monitorized by the LED BAR as follow: a) P17 in OPEN position Pos. Function 0 Ready 1 Tuning 2 Magnetron current 3 Power Level 4 Temperature 5 Configuration of P3, P4, P5, P7, P11, P13 AND P6 6 Configuration of P8, P10, P12, P14, P15, P16, P17 AND P18 7 Not used 8-9 Reserved b) P17 in CLOSE position Pos. Function 0 STC Amplification 1 STC Slope 2 P.M. Open 3 P.M. Amp. 4 VD Level 5 S.P. Adjustment 6 TR Delay 7-9 Reserved 3 S2 10 position rotary switch It selects the TRANSCEIVER unit operation mode as follow: Pos. Function 0 TRANSCEIVER under external control 1 1 TRANSCEIVER under external control 2 2 TRANSCEIVER in local stand-by 3 TRANSCEIVER in local with short pulse 4 TRANSCEIVER in local with medium pulse 5 TRANSCEIVER in local with long pulse 6 Not used 7 TRANSCEIVER in local with Performance Monitor 8-9 Not used 4 U31 10-segments LED BAR indicator When lit-up, it visualizes the following parameters: Pos. Function 1-8 Status or value of the selected function (hexadecimal value displayed) (1 LSB, 8 MSB) 9 Rx Line Status 10 Tx Line Status 5 D23 LED It indicates the presence of signal NOISE ENABLING in the Performance Monitor circuit 6 D1 LED It indicates the presence of the +5 V 7 R63 Local Tuning potentiometer In local, it controls the VCO tuning
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.1 Rev. C CHAPTER 3 FUNCTIONAL DESCRIPTION 3.1 Introduction The present chapter provides the functional and detailed description of the main functions and operations performed by the 30 kW S-BAND/U Antenna Group. Functional diagrams are used to depict signal processing: text is used to support diagrams as necessary for clarity purposes. The descriptions are structured in paragraphs as described in the following. Paragraph 3.2, Functional description, provides a general functional description, functional areas identification and main interconnections among them. This allows the pointing out of the main function relationship and unit performance. As “functional area” it is intended a group of circuits, or other devices, which operate together to accomplish a well defined function. Each of the major functions of the Unit shown in the functional block diagram (Chapter 9, Figure 9.1.9) is described in details on separate functional block diagrams whose description is given as follows: Paragraph 3.3, Technical Description: functional block diagrams show the development of a function from input to output in detail. Main assemblies and subassemblies (modules and cards) are shown and identified by code name and part number (P/N). Functional block diagrams show the development of a function from input to output in detail. Main assemblies and subassemblies (modules and cards) are shown and identified by code name and part number (P/N). Hardware blocks are used in the signal paths to describe the processing functions performed. For a better understanding, the signal functions on circuit blocks are tagged by letters whose meanings are described in the list of abbreviations (Table 1.1.1 - List of Abbreviations). Signals flow are mainly laid down from left to right and from top to bottom therefore subassemblies can be illustrated more than once to ensure logical signal flow. Signals, on functional block diagram, appear with their official code name as per the Manufacturer electric schematic diagrams and tabular interconnection lists. Comments for clarity on signal paths are indicated parenthesis; this sometimes identifies their operational accomplishment. Timing diagrams and word-code bit structure figures are also given as necessary for a better understanding of the described function. Logic terms and principles used in this technical manual comply with standard engineering practices. Logic symbols (gates) are used if they represent more appropriately, in a simplified form, the logic function performed even by complex parts of hardware. Where necessary, functional description of power supplies and minor
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.2 Rev. C assemblies are referred to schematic diagrams. NOTE The schematic block diagrams of Chapter 3 show all the functions that the hardware boards could potentially support, while the related functional description refers only to the functions implemented in the customised present configuration. 3.2 Functional description The functional block diagram of the 30 kW S-BAND/U Antenna Group equipment is shown in Chapter 9, Figure 9.1.9. Each block represents a functional area, which is described in detail in the following function of the present chapter. The blocks indicated by dotted lines represent circuits assembled on the chassis of the Unit. Basically, the unit performs the following functions: - it generates the power supply voltages required for they unit functioning - it generates the R.F. pulses which will be radiated by the Antenna; the pulses, in S-band wave length (3050 ±30 MHz) and with 30 kW peak nominal power, can be selected among the following: PULSE TYPE DURATION PRF SHORT PULSE nominal 60 ns 3000 Hz MEDIUM PULSE nominal 250 ns 1500 Hz LONG PULSE nominal 800 ns 750 Hz - it receives the echoes reflected from targets and it converts and amplifies them - it monitors the correct operations of Unit The Electronic provides, as well, the proper DC Power Supply voltages: +15V, -15V, +5V, (LVPS area in RTM CONT B Board), and the High Voltages, (HVPS area in POWER MOS Board). The Electronic Assy, also contains, on RTM CONT B Board, the circuit to generate the DC voltage for heating the Magnetron Filament (VFIL). The Electronic, (RTM CONT B Board), generates the Trigger signal and the Trigger pulse required to drive the Modulator circuitry, (POWER MOS Board). For every pulse supplied, the Modulator powers the Magnetron cathode with a High Voltage pulse which causes it to oscillate for the pulse duration time, in accordance with the range scale selected by the operator, (Short, Medium, Long Pulse). R.F. pulses generation is performed by the Magnetron inside the "R.F. HEAD" block. The Magnetron output R.F. signal is sent to the Antenna via the Circulator and the waveguide path.
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.3 Rev. C The second main function carried out by the Unit is to convert the receiving R.F. energy, reflected from targets, into intermediate frequency, (I.F.) to amplify it. This is provided by the R.F. HEAD block mainly consisting of: - Limiter - Integrated Low Noise Front End composed of: . Image Rejection Filter . L.N.A. . Mixer . L.O. . IF LOG. Amplifier The echo signal received by the Antenna arrives, through the Limiter and the Low Noise Amplifier, to the Mixer where it is mixed with the signal forwarded by the Local Oscillator. The resulting beat is the 50 MHz IF signal which is forwarded to the IF LOG. AMPLIFIER. The Limiter is used to avoid an output above a scheduled value; the Limiter output is a constant value and an higher output causes a short-circuit. The Low Noise Amplifier and the Image Rejection Filter are used to suitably amplify the echo signal to improve the noise figure of the receiver. The Local Oscillator is integrated directly into the L.N.F.E. It can be tuned up to the Magnetron transmission frequency trough the VCO voltage level. The IF LOG. AMPLIFIER dynamics is of the logarithmic type, with nominal central frequency of 50 MHz; the amplified signal is then detected and sent out from the unit, (VIDEO signal), as described in the following paragraph.
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.4 Rev. C 3.3 Transceiver unit technical description 3.3.1 General The Transceiver is composed of the following components: - the POWER MOS Board - the RTM CONT B Board - the Solid State R.F. Head - the NIFB Log Amplifier Hereafter, the technical description of each component is given; in Chapter 9, Figure 9.1.18 the cabling of the Transceiver is illustrated. 3.3.2 POWER MOS Board Basically the POWER MOS board, performs the following main functions: - it generates the High Voltage Power Supply (HVPS) - it generates the High Voltage Pulses for the Magnetron - it generates the +15V ISO and 120 V voltages 3.3.2.1 High Voltage Power Supply (HVPS) Generator Circuit The HVPS Generator Circuit purpose (Chapter 9, Figure 9.1.10) is to generate the high voltage (700 V) necessary to the Magnetron for the generation ofv the transmission pulse. The HVPS starts functioning when the signal, output of the COMPARATOR, is active; the signal is active when: - the signal HVON, from the MICROPROCESSOR of RTM CONT B Board, is available. This signal is used mainly when switching on, when the unit is not ready to operate because the Magnetron requires three minutes of warm-up time - the signal HVSTOP, which disables the circuit when the 15VDC ISO voltage is absent - the HVPS Generator Circuit generates the correct high voltage value When the high voltage is generated, the COMPARATOR sends the Microprocessor of the RTM CONT the signal HVOK and the LED DL1 (HVOK), mounted on the POWER MOS Board, lights.
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.5 Rev. C The signals used in this circuit are: - 70 Vdc from TRANSCEIVER 30S Power Supply Unit - 18 VAC from the RTM CONT B Board - LPA (Long Pulse Adjustment), MPA (Medium Pulse Adjustment) and SPA (Short Pulse Adjustment) from MICROPROCESSOR of RTM CONT B Board - HVON from MICROPROCESSOR of RTM CONT B Board The 70 Vdc is applied to the RECTIFIER through a protecting fuse, external to the board, and its presence is visualised when the LED DL2 (MAIN VOLTAGE), mounted on the board, is lit. The 70 Vdc (VMOD) is applied to the primary of the HVPS TRANSFORMER which, controlled by the MOSFET, generates, as output, the required high voltage (700 V). The MOSFET activation is controlled by a circuit, which, also, protects the MOSFET itself. The circuit is composed by the blocks COMPARATOR, POTENTIOMETER and FLYBACK CONTROLLER. When the COMPARATOR recognises that the output voltage is present, it activates the FLYBACK CONTROLLER which receives as input the output voltage adjusted by the POTENTIOMETER according to the pulse length (signals LPA, MPA and SPA). This way, it is possible to control the Magnetron output power. 3.3.2.2 Pulse Generator Circuit The Pulse Circuit Generator function (Chapter 9, Figure 9.1.11) is to generate the necessary high voltage supplying the Magnetron, in accordance with the previous selections. The Input Pushing Trigger is TRPUSH and the input Pulling Trigger is TRPULL; both from RTM CONT B Board. To the Pulse Circuit Generator is applied also the 700 V from the HVPS Generator Circuit. To one terminal of the primary windings of the PULSE TRANSFORMER is applied the 700 V whilst the second terminal is connected to the MOSFET (push and pull). The pulse is generated in accordance with TRPULL and will be pushed in accordance with TRPUSH; in fact the current flows only when the Transformer is grounded with the TRPULL. Every time there is 700 V on the primary, there is, as well, -8000 V on the secondary windings of the PULSE TRANSFORMER. According to this configuration, the R.F. is sent to the antenna from the Magnetron. To get the best operating conditions for the Magnetron, there is also a need to generate a voltage, named VFIL which is applied to a section of the secondary windings of the PULSE TRANSFORMER. As result, the FIL signal, sent to the Magnetron, has always a potential greater than the K potential.
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.6 Rev. C While the TRANSCEIVER is Transmitting, the CURRENT TRANSFORMER generates the signal MCUR which: - is used in this circuit - is sent to the Microprocessor of the RTM CONT B board 3.3.2.3 15V ISO and 120 V Generation In the POWER MOS Board there are also (Chapter 9, Figure 9.1.11): - the 18 Vac circuit. This voltage, coming from the RTM CONT B Board, is applied to the ADAPTER which generates: . the signal HVSTOP which disables the high voltage generation when the 18 Vac is absent . the +15V ISO used to supply the Pulse Generator Circuit - the 120 V obtained from the 700 V, whose function is to make the Performance Monitor function 3.3.3 RTM CONT B Board The RTM CONT B board is located inside the Transceiver Unit cover and its function is to control the Transceiver operations. The RTM CONT B board is divided in the following main circuits: - Low Voltage Power Supply, LVPS - Microprocessor and Gate Array - Pulse Length Generator - Azimuth and Heading Line Signal Circuit Generator - Performance Monitor 3.3.3.1 Low Voltage Power Supply Circuit (LVPS) The LVPS function is to generate the low DC voltages, (5V, -15V, 15 V), necessary to supply the Transceiver electronic circuits. As input, the circuit receives the 70 Vdc voltage from the External S-Band PSU (Chapter 9, Figure 9.1.12). These voltages are rectified, filtered and stabilised by suitable solid state components in order to get as output: - 5 V, -15 V, + 15 V to supply all other electronic circuits - VFIL, according with the selected Pulse
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.7 Rev. C 3.3.3.2 Microprocessor and Gate Array 3.3.3.2.1 General description The heart of RTM CONT B Board, and generally of whole Transceiver, is an advanced 8 Bit MCU, (Micro-controller Unit), with highly sophisticated, on chip, peripheral capabilities. It performs the following functions: - managing all functions of the Transceiver Unit on the basis of commands/data from the Display Unit - preparing the feed-back signals to be sent out to the Indicator unit - executing all internal processing to ensure the Transceiver Unit control and monitoring The Microprocessor used in the Board is the 68HC711E9 and the on-chip memory system includes 8 Kbytes ROM, 512 bytes EEPROM, 256 bytes RAM and a Gate Array type XCS10XL. Major peripheral functions are provided on-chip. An eight-channel A/D Converter is included, with eight bits of resolution. Asynchronous Serial Communications Interface (SCI) and a separate synchronous Serial Peripheral Interface (SPI) are included. The main 16-bit, free-running Timer system has three input-capture lines, five output-compare lines and a Real Time Interrupt function. An 8-bit pulse Accumulator sub-system can count external events or measure external periods. A Watch-dog system protects against software failures. The Transceiver unit management is performed by the Microprocessor, which does not require any external PROM or RAM elements: its own memory, in fact, has sufficient capacity to store both the Operative Program and Temporary data. The necessary clock pulses are generated by a 10 MHz crystal oscillator. In Chapter 9, Figure 9.1.13 are displayed the Microprocessor and the Gate Array general configuration, the main sub-systems and how they relate to the pins of the MCU. 3.3.3.2.2 Functions Performed The main functions performed by the Microprocessor with the by Gate Array, on the basis of commands and selections, Remote (from Display Unit) or Local (Through the Selectors) are: - to initialise the Transceiver operations - to generate the trigger pulse for POWER MOS Board and the trigger (TR) and pre-trigger, (PRTR) pulse for both the Display Unit and the P.M. function - to generate the PRESTC waveform for the NIFB Assy (STC) and the selection commands for band-width of Receiver - to generate: . the VCO forwarded to Mixer
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.8 Rev. C . the control signals forwarded to POWER MOS Board - to receive the command allowing the Antenna rotation - to perform the Hour Meter control - to perform the processing on various sensor signals in order to monitor the correct operations of the TRANSCEIVER unit - to provide indications on a LED type meter 3.3.3.2.3 Input Signals Table 3.3.1 - Microprocessor Input Signals lists the Microprocessor input signals and their meaning; Table 3.3.2 - Gate Array Input Signals lists the Gate Array input signals and their meaning. Table 3.3.1 - Microprocessor Input Signals SIGNAL FROM MEANING TEMP On board sensor Temperature value; to be displayed on LED Meter AZ Antenna Pedestal Antenna azimuth pulse HL Antenna Pedestal Antenna ship bow pulse TUNE Display Unit Tuning value in remote position not serial VFIL On board circuit Presence of the voltage for the Magnetron +15V On board circuit Presence of the voltage MCUR POWER MOS Board Magnetron cathode current pulse sample; to be displayed on LED Meter. PWLEV On board circuit Information about the Power Level; to be displayed on the LED BAR VDLEVEL Antenna Pedestal Main bang Video signal level; to be displayed on LED Meter
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.9 Rev. C Table 3.3.2 - Gate Array Input Signals SIGNAL FROM MEANING INTEXT Internal link External Trigger/Internal Trigger selection MPLC POWER MOS Board Magnetron transmission current HVOK POWER MOS Board Transmission enabling from the High Voltage Power Supply LINE Power Supply Unit Main power supply voltage frequency PMON Display Unit Performance Monitor circuit switching on SC1, SC2 Display Unit Transmission control signals EXTTR External Unit External Trigger SLK Unit interlock High voltage generation disabling EXTBLK Antenna Pedestal Safety Switch Consens to the transmission coming from Safety Switch P3-P18 On board links Links for the board configuration P55-P58 Indication selector (S1) 4 bit for the selector position P59-P63 Remote/Local selector (S2) 4 bit for the selector position MINUS MINUS push-button (S3) Input of the MINUS push-button PLUS PLUS push-button (S3) Input of the PLUS push-button CK Local Oscillator Input of the 50 MHz clock WRITE Microprocessor Write enabling READ Microprocessor Read enabling TR Microprocessor Transmission trigger TRSTC Microprocessor Pre-trigger for the STC generation DATA BUS Microprocessor Bit DB0-BD7 of the Data Bus ADDRESS BUS Microprocessor Bit AD0-AD4 of the Address Bus 3.3.3.2.4 Output Signals Table 3.3.3 - Microprocessor Output Signals lists the Microprocessor output signals and their meaning; Table 3.3.4 - Gate Array Output Signals lists the Gate Array output signals and their meaning. Table 3.3.3 - Microprocessor Output Signals SIGNAL TO MEANING WRITE Gate Array Write Enabling READ Gate Array Read Enabling TR Gate Array Transmission Trigger TRSTC Gate Array Pre-Trigger For The STC Generation DATA BUS Gate Array Bit DB0 - BD7 Of The Data Bus ADDRESS BUS Gate Array Bit AD0 - AD4 Of The Address Bus DATA BUS D/A converter For The Generation Of The VCO Signal
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.10 Rev. C Table 3.3.4 - Gate Array Output Signals SIGNAL TO MEANING XIRQ Microprocessor IRQ Microprocessor Video Data Reception/Transmission Interrupt CK10 Microprocessor 10 Mhz Clock CS0 - CS5 Digital Potentiometers Digital Potentiometer Chip Select U/D, INC Digital Potentiometers Digital Potentiometer Control Signals SWFIL1 - SWFIL3 LVPS Circuit Magnetron Filament Voltage Control Signals FAN Unit Fans Switching On Signal When The Temperature Is Greater Than 40 °C ANTS Power Supply Antenna Switching On Signal HRM Power Supply Hour-Meter Switching On Signal SPA, MPA, LPA Power Mos Board HVPS Circuit Control Signals HVON Power Mos Board HVPS Circuit Switching On Signal SWB1 - SWB2 Nifb Assy Signals For The Control Of The NIFB Bands TRPM Performance Monitor Circuit Trigger For The Generation Of The Performance Monitor Ring TRPS Power Mos Board Trigger PUSH For The Transmission Pulse Generation TRPL Power Mos Board Trigger PULL For The Transmission Pulse Generation GSTC On Board Level Adapter Gate For The STC Signal Generation VDSTAN Display Unit Video Output Enabling /VDSTAN Display Unit Enabling For The Output Of The Video Combined With The Digital Signals RXCOMB Display Unit Serial Reception Of The Combined Video TXCOMB Display Unit Serial Transmission Of The Combined Video DISTX Display Unit Enabling For The Combined Transmission On The Video 3.3.3.3 Pulse Length Generator Function The Pulse Length Generator Function (Chapter 9, Figure 9.1.13) provides the length of the pulse generated in accordance with the previous selections. In the inputs to Pulse Length Generator are the following signals: TR (Internal Trigger),BLANK, HVOK, MONOPULSE. The outputs from the PULSE GENERATOR are: TRPS and TRPL. Upon reception of the HVOK signal, and the incoming trigger, the PULSE GENERATOR provides the GO signal. GO is an input signal in the Pulse Length Generator. This Pulse Length Generator, receiving the information relevant the Pulse Length forwards the Pulse according with the selected length. The Comparator output is the signal TTL MONOPULSE, which is an input in PAL as well. Receiving the MONOPULSE signal, TRPS and TRPL signals are generated and trough the DRIVERS are forwarded to POWER MOS Board, HVPS Area.
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.11 Rev. C 3.3.3.4 Azimuth and Heading Line Signal Circuit Generator The antenna Unit must constantly forward its Azimuth position and Heading Line to the Display unit. The function of this circuit (Chapter 9, Figure 9.1.14) is to process the incoming signal AZIN and HLIN and forward to the micro controller the signal AZ and HL for blanking function. The output signal AZOUT and HLOUT are used on the Display Unit. 3.3.3.5 Performance Monitor Function The Performance Monitor functions (Chapter 9, Figure 9.1.15) are to monitor Transceiver performance in order to allow the Noise Ring presentation on PPI. In the related circuit there is a diode, operating as a rivelator when the RF is received or as noise generator when the signal NE is available. When the diode is operating as rivelator he is synchronised with the peak power of the signal and the rivelator circuit can rivelate the power present at the diode starting, (GSTC triggers) 1/16 in advance of normal trigger and finishing when MCUR signal is present. The TRPM trigger is an incoming trigger in the PM circuit and his function is to allow the generation of the NE, Noise Enabling, signal. At the same circuit will arrive, generated by the PWLEVEL, the SN, Source Noise signal as well. The delay between TRPM and NE signal is a function of SN voltage value; therefore the Noise Ring will bed function of the distance. When the command PMON, Performance Monitor ON, is available, in the PM circuit there is the 120 Voltage as well, forwarded by POWER MOS Board and supplying a neon lamp in Antenna. A neon lamp, placed in front of the Antenna, on a monitor arm protruding from the antenna pedestal, is excited at each antenna scan by the radiated RF pulse energy, when the radiation beam crosses over. The result is that when the Performance Monitor is switched on and the neon lamp is radiated by the Magnetron RF, the RF energy causes a current variation on neon lamp and a signal is generated. A detector circuit provides to pick up this signal and to generate the signal NO, Noise Open, opening the Noise Ring. The Neon Lamp function is to verify as well the Magnetron functioning and to provide a general idea on the output power on air. According to the VDLEVEL signal, the proper circuit generates the NT (Noise Thickness) signal; in case of VD variation also a thickness variation occurs. 3.3.4 Solid State R.F. Head The RF Head (Chapter 9, Figure 9.1.16) is composed of a solid state MAGNETRON stage connected to a CIRCULATOR and ending with a flange to be connected to a RF Coaxial Cable in order to transfer the RF PULSE to the
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.12 Rev. C Antenna for it to be radiated. The apposite end of the CIRCULATOR is fitted with the LIMITER and the L.N.F.E (Low Noise and Front End) composed of: the IMAGE REJECTION FILTER, the LOW NOISE AMPLIFIER, two BALANCED MIXER and the LOCAL OSCILLATOR. The RF Head is designed to generate RF pulses in the S-Band range up to 30 kW and to process the received echo from targets, converting it into Intermediate Frequency which is then sent to the NIFB Assy. During the transmission time, the MAGNETRON receives a high voltage trigger pulse, whose length (short/medium/long) is determined by the operator settings on Display, and generates high power RF pulses in the S-Band range until the high voltage pulse is applied to its cathode. The RF energy generated is sent to the CIRCULATOR, and from this to the waveguide which delivers the energy for the radiating Antenna. The CIRCULATOR is a 2-way microwave device used as a RF switch or to send the transmission pulses to the Antenna or to apply the received echoes to the Receiver. The LIMITER device protects the highly sensitive Radar Receiver from high power RF signals, whilst maintaining low insertion loss levels throughout the Receiver. In the receiving phase, the RF Head amplifies the S-Band echo signals provided by the Antenna by means of the LOW NOISE AMPLIFIER, and converts it into a 50 MHz signal (IF OUT), equivalent to the central frequency of the IF Amplifier, by means of the two MIXERS which receive the signal generated by the LOCAL OSCILLATOR (VCO). 3.3.5 NIFB Assy The NIFB Assy function (Chapter 9, Figure 9.1.17) is to amplify the echo signals delivered by the RF HEAD Assy. It is composed of a Group Amplifier stages, cascade connected, with specific components so to obtain a logarithmic dynamic characteristic. The central frequency is 50 MHz and the bandwidth is 1.5 MHz for Long Pulse, 4.8 MHz for Medium Pulse and 21 MHz for Short Pulse. To maintain the target echo signals free from any possible external induction that can degrade the performance of the Unit the DC power supply voltages and the band switching commands are applied to the module by means of a FILTER. The distortion effect that can be introduced on the IF signal caused by the presence of ripple on the DC power supply voltage, increased stage after stage in the cascade amplifier of the IF strip, can be reduced or strongly attenuated by the use of the FILTER. The purpose of this circuit, made up by coils and capacitors of suitable value, is to improve the filtering action on the DC voltage that powers each of the amplifier stages and on the signals to avoid the induction of an undesirable alternating signal component over the target signal.
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.13 Rev. C The IF LOG AMPLIFIER Assy is located frontally, onto the POWER MOS mechanical box and the filter EMI Assy is located externally, on the lower side of the TRANSCEIVER box; the connection is provided by means of cables. 3.4 Antenna pedestal 3.4.1 General This Chapter contains a description of the Antenna Pedestal S/U, and of the circuits, mainly forming the unit. 3.4.2 Pedestal Type 03R-039 As said in Chapter 1, the Pedestal, whose block diagram is shown in Chapter 9, Figure 9.1.9, is used with 12' S Band Antennas. It is equipped with a three-phase motor powered by the Transformer in the Transceiver. The motor windings should be connected either in a star or in a triangle configuration depending on the mains voltage available, in the following manner: ∆ 3x220V 50 Hz or 3x255V 60 Hz Y 3x380V 50 Hz or 3x440V 60 Hz NOTE Motors are set by the Manufacturer for 3x380V 50 Hz main supply. The motor setting can be modified according to the ship’s supply on the motor terminal board. The motion is transmitted to the Antenna through the Gear Reduction Unit with a reduction ratio of 20.8:1 and a Driving Belt with a reduction ratio of 3:1; the final Antenna angular speed is greater than 20 rpm both at 60 Hz and at 50 Hz with a wind speed of 100 knots. On the Antenna shaft is mounted the Optical Read-out, which generates the pulses used to determine the Antenna data (Azimuth) and the Heading Line. The Optical read-out unit is composed of a disk rotating with the Antenna shaft and an optical sensor composed of a light generator and a Photo-diode. When in front of the optical sensor passes a hole of the disk, a pulse is generated by the Photo-diode. The pulse is sent to the Transceiver through the SIGNAL CONDITIONER circuit, mounted on the ANTSIGN BOARD, which adapt the amplitude of the pulses from the Read-out to that necessary to the Transceiver circuits. The Heading Line pulses are obtained by means of another optical sensor, equal to the previous one, which generates a pulse when a deeper hole passes through the sensor.
30 kW S-BAND/U ANTENNA GROUP FUNCTIONAL DESCRIPTION 3.14 Rev. C The ANTSIGN BOARD is also used as support for the SAFETY SWITCH wiring (TB5). This switch positioned outside the Pedestal, when open, disable, in the Transceiver the power supply for the MOTOR thus realising a safety condition when personnel have to operate on the Pedestal both for maintenance and for repairing. The wiring from the switch enter in the Pedestal through the smaller stuffing tube. The installation is compulsory and it is recommended to install it the at the bottom of the stairs giving access to the Antenna. WARNING BEFORE PERFORMING ANY SERVICE ON THE ANTENNA, SWITCH TO OFF POSITION THE SAFETY SWITCH The Pedestal is connected to the TRANSCEIVER by means of a cable, which enter the Pedestal through the bigger stuffing tube.
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.1 Rev. C CHAPTER 4 PREVENTIVE MAINTENANCE 4.1 Introduction This chapter provides the necessary information to execute the preventive maintenance operations which must be carried out in order to ensure the 30 kW S-BAND/U Antenna Group equipment full efficiency. The maintenance procedures are described in tabular form (Card); each card lists the operations, which must be performed, their periodicity, the personnel required, the materials and the time required for their performance. 4.2 Preventive maintenance procedure The preventive Maintenance procedures are given by means of cards. Each card, besides indicating the operations to be performed during the maintenance execution, lists the following indications: - PERIODICITY: it is an alphanumeric code to identifying the maintenance action described. The following periodicity symbols, as appropriate, are used in the order of increasing periodicity interval as listed in the following: . M: Monthly . S: Semi-Annual . A : Annually . WR: When Required The Table 4.2.2 - List of the Preventive Maintenance Cards lists the Preventive Maintenance cards and, for each of them, indicates the periodicity and the required time. - PERSONNEL: it indicate the number and the typology of the personnel able to perform the maintenance operations. On the assumption that the qualification, knowledge, experience and skill needed to fulfil the task assigned are proportional to the ranks, the following abbreviations are used: . ST: is a qualified persons with not less than ten years of experience on the job . JT: is a qualified person with more than four years of experience on the job . R: is a young technician with less than four years of experience on the job, he can be either qualified or undergoing qualification
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.2 Rev. C - REQUIRED INSTRUMENTS: it indicates the tools or the instruments which are used in the card operations; Table 4.2.1 - List of Recommended Tools and Instruments lists the tools, the instruments and the material required to perform the Preventive Maintenance operations - REQUIRED TIME: it indicates the total time required to perform the card operations - SAFETY PRECAUTIONS: it indicates the precaution to be followed in order to ansure a safety Preventive Maintenance operation execution Table 4.2.1 - List of Recommended Tools and Instruments PR. DESCRIPTION TYPE NOTE 1 Digital Multimeter CHAUVIN ARNOUX CPA 9651 (3:5) or equivalent 2 Oscilloscope Tektronics 3 30W welders 4 Solder 5 Desoldering tool SILVERSTAT 6 Vacuum cleaner 7 Set of screwdrivers USAG Insulating handle 8 Set of open wrenches USAG 9 Set of communication tools Table 4.2.2 - List of the Preventive Maintenance Cards PROG. OPERATION PERIODICITY REQUIREDTIME Card 1 Check of the External Conservation Status S1 15' Card 2 Internal inspection and general cleaning of the 30 kW S-BAND/U Antenna Group unit S2 15' Card 3 Internal inspection and general cleaning of the Antenna Pedestal S/U Unit S3 15' Card 4 Replacement of the Magnetron 8000 hours 45' Card 5 Trigger Delay Adjustment WR 30' Card 6 VCO Calibration WR 30' Card 7 Optical Read-out Alignment WR 30' Card 8 Performance Monitor Assy calibration (if present) WR 30'
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.3 Rev. C CARD 1 UNIT OPERATION PERIODICITY 30 kW S-BAND/U Antenna Group Check of the External Conservation Status S1 PERSONNEL REQUIRED INSTRUMENTS REQUIRED TIME 1R None 15 minutes SAFETY PRECAUTIONS On the electric switchboard, set to OFF the power breaker relevant to the unit and hang to it a placard reading "WORK IN PROGRESS - DO NOT SWITCH ON" STEP SEQUENCE OF OPERATIONS 1. Check that no parts of the plastic covering the antenna have been painted. 2. Check the casing conservation state. 3. Grease the fastening screws of the cover to avoid corrosion and facilitate future inspections. 4. If paint has been scratched off at any point, proceed as follows: − Carefully degrease the part to be painted − Smooth lightly with emery paper − Clean with a dry brush − Apply a coat of anticorrosive − When the applied anticorrosive is dry, paint with a brush or, better still, by spraying.
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.4 Rev. C CARD 2 UNIT OPERATION PERIODICITY TRANSCEIVER Internal inspection and general cleaning of the TRANSCEIVER unit S2 PERSONNEL REQUIRED INSTRUMENTS REQUIRED TIME1R Set of screwdrivers, Electro Contact Cleaner, Soft brush, Primer, Paint, Emery paper, Soft cloth 15 minutes SAFETY PRECAUTIONS On the electric switchboard, set to OFF the power breaker relevant to the unit and hang to it a placard reading "WORK IN PROGRESS - DO NOT SWITCH ON" STEP SEQUENCE OF OPERATIONS Internal Multipin Connectors and Cables Inspection 1. By means of the proper screwdriver, unscrew the 6 screws (Chapter 9, Figure 9.1.19 pos. 1) locking the front cover (Chapter 9, Figure 9.1.19 pos. 2) and open the former. 2. Check the conditions of each connector electric contacts (pins and plugs), connector packing and of its cable. Clean contacts by using Electro Contact Cleaner. Repair or replace, if necessary, any defective parts. Check for Loose Screws 3. Check, carefully, that all cabinet internal screws are not loose, especially the screws fastening terminal lugs on TB. 4. Replace or tighten firmly as necessary. General Cleaning 5. By using a soft brush and alcohol, remove dust, ash and grease from the internal components. 6. Dry the surfaces by using an unfraid soft cloth. 7. Reinstall the front cover and tighten the twelve screws as necessary. 8. By using a soft brush and alcohol, remove dust, ash and grease from the external surfaces of RTM cabinet. 9. Dry the surfaces by using an unfraid soft cloth. Detailed Overall Inspection and Cleaning 10. Check the state of preservation of the TRANSCEIVER unit cabinet. 11. If paint has been scratched off at any point, proceed as follows: − carefully degrease the part to be painted − smooth lightly with emery paper − apply a coat of primer − when the primer is dry, paint by brush or better still by spraying − with a brush remove any dust deposited inside the unit − with a jet of compressed air eliminate all traces of dust 12. On the electric switchboard set to ON the power breaker relevant to unit under test and remove the warning placard.
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.5 Rev. C CARD 3 UNIT OPERATION PERIODICITY Antenna Pedestal S/U Internal inspection and general cleaning of the Antenna Pedestal S/U Unit S3 PERSONNEL REQUIRED INSTRUMENTS REQUIRED TIME1R Set of screwdrivers, Electro Contact Cleaner, Soft brush, Primer, Paint, Emery paper, Soft cloth 15 minutes SAFETY PRECAUTIONS On the electric switchboard, set to OFF the power breaker relevant to the unit and hang to it a placard reading "WORK IN PROGRESS - DO NOT SWITCH ON" STEP SEQUENCE OF OPERATIONS 1. By means of the open wrench, loose and remove the four nuts (Chapter 9, Figure 9.1.23 pos. 1) fixing the cover (Chapter 9, Figure 9.1.23 pos. 2) and remove the former. 2. Check the internal state of casing and if paint has been scratched off at any point, proceed as per Card 1 3. Check: − the power connection cable; − the electrical and electronic circuits and mechanical components. Remove and replace components if and when necessary. 4. Cleaning is necessary only when layers, often dark layers, can be clearly seen on some area. If these layers are visible, they must be removed with a dry cloth. Only if really necessary, repeat the procedure with a cloth dampened in carbon tetrachloride. A special brush for cleaning, of appropriate size, may also be used. If and when necessary use an air-brush to remove dust from inside the pedestal 5. Check the Antenna position indicator components. Replace components or the unit according to the needs 6. Check the Driving Belt tension and integrity. Replace the belt if necessary. 7. Reassemble the cover using the reverse procedure. 8. Grease the fastening nuts of the cover to avoid corrosion and facilitate future inspections
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.6 Rev. C CARD 4 UNIT OPERATION PERIODICITY TRANSCEIVER Replacement of the Magnetron WR (8000 hours) PERSONNEL REQUIRED INSTRUMENTS REQUIRED TIME 1JT Set of screwdrivers, Silicone grease compound 340 45 minutes SAFETY PRECAUTIONS On the electric switchboard, set to OFF the power breaker relevant to the unit and hang to it a placard reading "WORK IN PROGRESS – DO NOT SWITCH ON" STEP SEQUENCE OF OPERATIONS Removal 1. By means of the proper screwdriver, unscrew the 6 screws (Chapter 9, Figure 9.1.19 pos. 1) locking the front cover (Chapter 9, Figure 9.1.23 pos. 2) and open the former. 2. Disconnect the Magnetron (Chapter 9, Figure 9.1.21 pos. 1), by extracting it from the relevant site. 3. By means of the proper screwdriver, unscrew the six screws (Chapter 9, Figure 9.1.21 pos. 2) fixing the Magnetron (Chapter 9, Figure 9.1.21 pos. 3) to the support (Chapter 9, Figure 9.1.21 pos. 4). 4. Remove the Magnetron from its support. Installation 5. Before fastening the Magnetron to the proper seat, spread a layer of silicone grease on the Magnetron surface which is in contact with the cabinet rear wall in order to increase the Magnetron heating surface dissipation. 6. In order to install the new Magnetron, perform the removal operations in reverse order without closing the cover. 7. Position selector S2 of RTM CONT B Board (Chapter 9, Figure 9.1.22 pos. 3) on position 2. 8. Perform the following operations: − position the power breaker to ON; − remove the Power Supply cover; − on the Power Supply, position the switch SW1 on position SERVICE MODE; − wait for 15 minutes. As an alternative, set the Display in Stand-by and wait for 15 minutes. 9. By following the procedures of Card 6, perform the VCO calibration. 10. By following the procedures of Card 8, perform the calibration of the Performance Monitor circuit (if present). 11. Perform the following operations: − on the Power Supply, position the switch SW1 on position NORMAL − on RTM CONT B Board, position S1 (Chapter 9, Figure 9.1.22 pos. 2) and S2 on 0 (zero) − close the front cover and tighten the 6 screws as necessary
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.7 Rev. C CARD 5 NOTE The operations described in this card are necessary only when the RTM is connected to Display Systems type PRORA, SELESCAN or MASTERMATE of first generation. For the NAVBAT and MASTERMATE displays, the adjustment can be made directly on the display. UNIT OPERATION PERIODICITY TRANSCEIVER Trigger Delay Adjustment WR PERSONNEL REQUIRED INSTRUMENTS REQUIRED TIME 1ST, 1JT Set of screwdrivers, Set of Allen wrenches, Set of Voice Communication 30 minutes SAFETY PRECAUTIONS Follow the standard safety rules STEP SEQUENCE OF OPERATIONS NOTE The voice communication device (telephone set or walkie-talkie) must be provided between the RTM operator and the Display operator. WARNING HIGH VOLTAGES ARE PRESENT INSIDE THE UNIT. DO NOT OPEN THE CABINET COVER BEFORE THE MAIN LINE BREAKER HAS BEEN TURNED OFF. ALL WORK PERFORMED ON THE RTM MUST BE CAREFULLY RECORDED IN THE UNIT LOGBOOK. BEFORE STARTING ANY MAINTENANCE WORK, IT IS MANDATORY THAT, FOR THE SAFETY OF PERSONNEL, ALL HIGH-VOLTAGE CAPACITORS BE SHORT-CIRCUITED BY MEANS OF A WELL INSULATED SCREWDRIVER OR OTHER SUITABLE TOOL. BEFORE CONNECTING INSTRUMENTATION USED FOR PERFORMING MEASUREMENTS INSIDE THE UNIT, IT IS ADVISABLE TO SWITCH OFF THE POWER SUPPLY. DO NOT ALTER THE SETTING OF THE SEMIOPERATIVE CONTROLS UNLESS A SPECIFIC ADJUSTMENT IS REQUIRED AND THE NECESSARY TEST EQUIPMENT IS AVAILABLE. 1. On the Display, set the range selector to the shorter range. 2. Takes as a reference an object that can be detected on the Display and measure accurately its distance from the Antenna. 3. Ask to the Display operator to read the distance of the object on the Display. 4. Compare the above measurement with the range displayed on the Display 5. If the distances are the same, stop the procedure. 6. If the distances are not the same, operate on the RTM as follow: − on the Display switch OFF the RTM Unit; − unscrew the 6 screws (Chapter 9, Figure 9.1.19 pos. 1) locking the front cover (Chapter 9, Figure 9.1.19 pos. 2) and open the former; − on the TRANSCEIVER unit, pull the switch SW2 (Chapter 9, Figure 9.1.20 pos. 1); − on the RTM CONT B Board, perform the jumper P17(Chapter 9, Figure 9.1.22 pos. 1); − on the RTM CONT B Board, position the selector S1 (Chapter 9, Figure 9.1.22 pos. 2) on position 6; (Continue)
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.8 Rev. C CARD 5 (Continues) STEP SEQUENCE OF OPERATIONS − on the Display switch on the RTM unit; − by means of the push-buttons plus and minus of the RTM CONT B Board (Chapter 9, Figure 9.1.22 pos. 11), adjust the trigger until the distance displayed on the Display and the distance measured are equal; − on the Display switch off the RTM Unit; − on RTM CONT B Board, position S1 and S2 (Chapter 9, Figure 9.1.22 pos. 3) on 0 (zero); − remove the jumper P17. 7. Reinstall the front cover and tighten the 6 screws as necessary.
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.9 Rev. C CARD 6 UNIT OPERATION PERIODICITY TRANSCEIVER VCO Calibration WR PERSONNEL REQUIRED INSTRUMENTS REQUIRED TIME 1ST Set of screwdrivers, Set of Allen wrenches, Oscilloscope, Multimeter 30 minutes SAFETY PRECAUTIONS Follow the standard safety rules STEP SEQUENCE OF OPERATIONS WARNING HIGH VOLTAGES ARE PRESENT INSIDE THE UNIT. DO NOT OPEN THE CABINET COVER BEFORE THE MAIN LINE BREAKER HAS BEEN TURNED OFF. ALL WORK PERFORMED ON THE RTM MUST BE CAREFULLY RECORDED IN THE UNIT LOG BOOK. BEFORE STARTING ANY MAINTENANCE WORK, IT IS MANDATORY THAT, FOR THE SAFETY OF PERSONNEL, ALL HIGH-VOLTAGE CAPACITORS BE SHORT-CIRCUITED BY MEANS OF A WELL INSULATED SCREWDRIVER OR OTHER SUITABLE TOOL. BEFORE CONNECTING INSTRUMENTATION USED FOR PERFORMING MEASUREMENTS INSIDE THE UNIT, IT IS ADVISABLE TO SWITCH OFF THE POWER SUPPLY. DO NOT ALTER THE SETTING OF THE SEMIOPERATIVE CONTROLS UNLESS A SPECIFIC ADJUSTMENT IS REQUIRED AND THE NECESSARY TEST EQUIPMENT IS AVAILABLE. 1. By means of the proper screwdriver, unscrew the 6 screws (Chapter 9, Figure 9.1.19 pos. 1) locking the front cover (Chapter 9, Figure 9.1.19 pos. 2) and open the former. 2. On RTM CONT B Board, position S1 (Chapter 9, Figure 9.1.22 pos. 2) on 1 (one) and S2 (Chapter 9, Figure 9.1.22 pos. 3) on 2 (two). 3. On the TRANSCEIVER unit, pull SW2 (Chapter 9, Figure 9.1.20 pos. 1). 4. Remove the Power Supply cover. 5. On the RTM 30S Power Supply, position SW1 on SERVICE MODE and wait for 3 minutes. 6. When the RTM is ready, on RTM CONT B board perform the following operations: − position S2 on 5 − rotate the potentiometer R63 (Chapter 9, Figure 9.1.22 pos. 7) completely CCW − rotate the potentiometer R63 CW and verify that the indication of the LED BAR (Chapter 9, Figure 9.1.22 pos. 4) starting from the minimum reaches the maximum and return to the minimum. 7. On RTM CONT B Board, rotate R63 in order to reach the maximum indication on the LED BAR and, by means of the Multimeter, on TB12 (Chapter 9, Figure 9.1.22 pos. 8), measure the value of VCO and take note of its value. 8. On RTM CONT B Board, perform the following operations: − rotate R63 to obtain the minimum level; − connect the Multimeter between the pin VCO of TB10 and the ground − by operating on R44 (Chapter 9, Figure 9.1.22 pos. 9), adjust the output voltage to VCO (measured at step 7) -2 V − rotate R63 until the maximum voltage is read on the Multimeter − by operating on R48 (Chapter 9, Figure 9.1.22 pos. 10), adjust the output voltage to VCO (measured at step 7) +2 V − rotate R63 in order to reach the maximum indication on the LED BAR (Continue)
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.10 Rev. C CARD 6 (Continues) STEP SEQUENCE OF OPERATIONS NOTE The following adjustment is necessary only when the RTM is connected to Display Systems type PRORA, SELESCAN or MASTERMATE of first generation. For the NAVBAT and MASTERMATE displays, the adjustment can be made directly on the display. 9. If necessary, perform the following operations: − on the RTM CONT B Board, perform the jumper P17 (Chapter 9, Figure 9.1.22 pos. 1); − position S1 on position 4; − act on the push-buttons plus and minus of the RTM CONT B Board (Chapter 9, Figure 9.1.22 pos. 11), in order to obtain a LED BAR indication of about 128; − remove the jumper P17. 10. Perform the following operations: on the Power Supply, position the switch SW1 on position NORMAL; on RTM CONT B board, position S1 and S2 on 0 (zero). 11. Reinstall the cover of the Power Supply. 12. Close the front cover of the TRANSCEIVER and tighten the 6 screws as necessary.
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.11 Rev. C CARD 7 UNIT OPERATION PERIODICITY Antenna Pedestal S/U Optical Read-out Alignment WR PERSONNEL REQUIRED INSTRUMENTS REQUIRED TIME 1ST Set of screwdrivers, Set of open wrenches 30 minutes SAFETY PRECAUTIONS Be sure the unit is switched OFF; set the safety switch to OFF and hang to it a placard reading "WORK IN PROGRESS DO NOT SWITCH ON". STEP SEQUENCE OF OPERATIONS 1. By means of the open wrench, loose and remove the four nuts (Chapter 9, Figure 9.1.23 pos. 1) fixing the cover (Chapter 9, Figure 9.1.23 pos. 2) and remove the former. 2. Rotate the Antenna by hand to athwartship position to align the Antenna Beam with the ship’s bow 3. By using the proper screwdriver, loose the screws fixing the Antenna Generator Disk to the Belt Pulley. 4. Rotate the Antenna Generator Disk until the bow indication on the disk (a lug deeper) is in the Optical Read-out unit. 5. Fix the screws fixing the Antenna Generator Disk. 6. Reassemble the cover using the reverse procedure. 7. Grease the fastening nuts of the cover to avoid corrosion and facilitate future inspections
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.12 Rev. C CARD 8 NOTE The operations described in this card are necessary only when the RTM is connected to Display Systems type PRORA, SELESCAN or MASTERMATE of first generation. For the NAVBAT and MASTERMATE displays, the adjustment can be made directly on the display. UNIT OPERATION PERIODICITY TRANSCEIVER Performance Monitor calibration (if present) WR PERSONNEL REQUIRED INSTRUMENTS REQUIRED TIME 1ST Set of screwdrivers, Set of Allen wrenches, Set of Voice Communication, Oscilloscope, Multimeter 30 minutes SAFETY PRECAUTIONS Follow the standard safety rules STEP SEQUENCE OF OPERATIONS NOTE The voice communication device (telephone set or walkie-talkie) must be provided between the RTM operator and the Display operator. WARNING HIGH VOLTAGES ARE PRESENT INSIDE THE UNIT. DO NOT OPEN THE CABINET COVER BEFORE THE MAIN LINE BREAKER HAS BEEN TURNED OFF. ALL WORK PERFORMED ON THE RTM MUST BE CAREFULLY RECORDED IN THE UNIT LOG BOOK. BEFORE STARTING ANY MAINTENANCE WORK, IT IS MANDATORY THAT, FOR THE SAFETY OF PERSONNEL, ALL HIGH-VOLTAGE CAPACITORS BE SHORT-CIRCUITED BY MEANS OF A WELL INSULATED SCREWDRIVER OR OTHER SUITABLE TOOL. BEFORE CONNECTING INSTRUMENTATION USED FOR PERFORMING MEASUREMENTS INSIDE THE UNIT, IT IS ADVISABLE TO SWITCH OFF THE POWER SUPPLY. DO NOT ALTER THE SETTING OF THE SEMIOPERATIVE CONTROLS UNLESS A SPECIFIC ADJUSTMENT IS REQUIRED AND THE NECESSARY TEST EQUIPMENT IS AVAILABLE. 1. By means of the proper screwdriver, unscrew the 6 screws (Chapter 9, Figure 9.1.19 pos. 1) locking the front cover (Chapter 9, Figure 9.1.19 pos. 2) and remove the former. 2. On the TRANSCEIVER, pull SW2 (Chapter 9, Figure 9.1.20 pos. 1). 3. On the Display, select Performance Monitor ON and tune the RTM. 4. On the Display check that the Noise Ring is placed at the correct distance, otherwise adjust the distance by performing the following operations: − on the RTM CONT B Board, perform the jumper P17 (Chapter 9, Figure 9.1.22 pos. 1); − on the RTM CONT B Board, position S2 (Chapter 9, Figure 9.1.22 pos. 3) on position 2; − by acting on the push-buttons plus and minus of the RTM CONT B Board (Chapter 9, Figure 9.1.22 pos. 11), position the ring to the proper distance; − remove the jumper P17. (Continue)
30 kW S-BAND/U ANTENNA GROUP PREVENTIVE MAINTENANCE 4.13 Rev. C Card 8 (CONTINUES) STEP SEQUENCE OF OPERATIONS 5. On the Display check that the Noise Ring aperture is the correct one, otherwise adjust the opening by performing the following operations: − on the RTM CONT B Board, perform the jumper P17; − position S1 (Chapter 9, Figure 9.1.22 pos. 2) on position 3; − by acting on the push-buttons plus and minus of the RTM CONT B Board, set the correct aperture; − remove the jumper P17. 6. On the Display check that the Noise Ring thickness varies by varying the tuning. 7. On the Display check that when the RTM is tuned, the thickness of the noise ring is between 1.5 and 2 NM. Otherwise adjust the thickness by performing the following operations: − on the RTM CONT B Board, perform the jumper P17; − position S1 on position 4; − by acting on the push-buttons plus and minus of the RTM CONT B Board, set the correct thickness; − remove the jumper P17. 8. Perform the following operations: − on RTM position the switch SW1 on position NORMAL − on RTM CONT B board, position S1 and S2 on 0 (zero) 9. Close the front cover of the TRANSCEIVER unit and tighten the 6 screws as necessary.
30 kW S-BAND/U ANTENNA GROUP TROUBLESHOOTING 5.1 Rev. C CHAPTER 5 TROUBLESHOOTING 5.1 Introduction 5.1.1 General This chapter indicates the procedures to be followed locate the faulty component when a trouble is met in the 30 kW S-BAND/U Antenna Group unit. 5.1.2 Organisation The troubleshooting procedures are described by means of flow charts. When the faulty component is located, refer to Chapter 6 for its replacement. 5.1.3 Personnel The personnel involved in the troubleshooting procedures must be made of skilled technician and must have a good knowledge of the equipment. 5.1.4 Tools and Instruments For the execution of the troubleshooting procedures, besides usual tools (screwdrivers, pliers, etc.), the following instruments are required: Table 5.1.1 - List of Recommended Instruments POS. DESCRIPTION TYPE NOTE 1 Digital Multimeter CHAUVIN ARNOUX CPA 9651 (3:5) or equivalent 2 Oscilloscope Tektronix or equivalent
30 kW S-BAND/U ANTENNA GROUP TROUBLESHOOTING 5.2 Rev. C 5.2 Troubleshooting Procedures 5.2.1 Safety Precautions WARNING OPERATE WITH CARE ON THE RTM UNIT BECAUSE OF HIGH VOLTAGES AND HIGH POWER. 5.2.2 Troubleshooting Operations Table 5.2.1 lists the possible failures which can arise met during the equipment functioning. If another type of failure is met, call the Manufacturer Service. Table 5.2.2 - List of Main Possible Failures PR. FAULT REMEDY 1 With RTM switched on, on the Display no signal is received Figure 9.1.24 2 The RADAR Antenna does not rotate Figure 9.1.25 3 The Display does not receive the Video Signal Figure 9.1.26 4 The Display does not receive the signal AZ Figure 9.1.27 5 The Display does not receive the signals HL Figure 9.1.28 6 At the switching on, the Antenna does not rotate By using the Multimeter, measure the power supply on the Motor Group wiring; Then: - if the power supply is present, replace the Motor (para 6.2.2.2) - if the power supply is not present, replace 3 Φ Filter (para 6.2.2.4) 7 There is not H.L. or Antenna data signal Replace in sequence: - the Antsign Board (para 6.2.2.6) - the Optical Read-out or the Encoder (para 6.2.2.7 or 6.2.2.8)
30 kW S-BAND/U ANTENNA GROUP CORRECTIVE MAINTENANCE 6.1 Rev. C CHAPTER 6 CORRECTIVE MAINTENANCE 6.1 General 6.1.1 Introduction This chapter provides the procedure, which must be followed to replace a faulty component of the 30 kW S-BAND/U Antenna Group Unit according to the troubleshooting procedures of Chapter 5. 6.1.2 Safety Precautions If not otherwise specified in the procedures, during the corrective maintenance operations, the following safety rules must be followed: - each maintenance operation must be carried out only after the equipment has been switched OFF WARNING SET TO OFF THE MAIN BREAKER OF THE EQUIPMENT AND HANG TO IT A PLACARD READING "WORK IN PROGRESS DO NOT SWITCH ON". - before removing any component, be sure the spare part is available - verify the integrity of the spare part and, if possible, perform a functional test 6.1.3 Personnel The replacement operations must be carried out by skilled personnel with a good knowledge of the equipment. 6.1.4 Required Tools and Instruments To carry out the replacement operations described in this chapter, only normal workshop tools (as screwdrivers, wrenches etc.) are required. The tools required to perform the corrective maintenance operations are: - set of screwdrivers
30 kW S-BAND/U ANTENNA GROUP CORRECTIVE MAINTENANCE 6.2 Rev. C - set of open wrenches - set of socket wrenches - soldering iron 6.2 Corrective maintenance procedures This paragraph provides a detailed description of the operations to be carried out in order to replace a damaged component. Table 6.2.1 - List of the Corrective Maintenance Procedures lists the Corrective Maintenance procedures. Table 6.2.1 - List of the Corrective Maintenance Procedures PARA COMPONENT TO BE REPLACED 6.2.1 Replacement Procedures for the TRANSCEIVER Unit 6.2.1.1 Replacement of a Fuse 6.2.1.2 Replacement of the POWER MOS Board 6.2.1.3 Replacement of the LNFE Assy 6.2.1.4 Replacement of the RTM CONT B Board 6.2.1.5 Replacement of the NIFB Assy 6.2.1.6 Replacement of the Magnetron 6.2.2 Replacement Procedures for the Antenna Pedestal S/U Unit 6.2.2.1 Driving Belt Replacement 6.2.2.2 Motor Replacement 6.2.2.3 Reduction Group Replacement 6.2.2.4 3 Φ Filter Replacement 6.2.2.5 Rotating Joint Replacement 6.2.2.6 Antsign Board Replacement 6.2.2.7 Optical Read-out Board Replacement 6.2.2.8 Antenna Generator Disk Replacement 6.2.1 Replacement Procedures for the TRANSCEIVER Unit 6.2.1.1 Replacement of a Fuse a) Required Tools - set of screwdrivers b) Removal 1. By means of the proper screwdriver, unscrew the six screws (Chapter 9, Figure 9.1.29 pos. 1) locking the front cover (Chapter 9, Figure 9.1.29 pos. 2) and open the former 2. By means of the hands, unscrew the fuse-holder cap
30 kW S-BAND/U ANTENNA GROUP CORRECTIVE MAINTENANCE 6.3 Rev. C (Chapter 9, Figure 9.1.30 pos. 1) 3. Remove the fuse from the fuse-holder c) Installation 1. In order to install the new fuse, perform the removal operations in reverse order 6.2.1.2 Replacement of the POWER MOS Board a) Required Tools - set of open wrenches - set of screwdrivers b) Removal 1. By means of the proper screwdriver, unscrew the six screws (Chapter 9, Figure 9.1.29 pos. 1) locking the front cover (Chapter 9, Figure 9.1.29 pos. 2) and open the former 2. Remove the POWER MOS Board (Chapter 9, Figure 9.1.30 pos. 2) cabling by tacking note of its disposition 3. By means of the proper open wrench, unscrew the nuts (Chapter 9, Figure 9.1.30 pos. 3) fastening the POWER MOS Assy to the frame and remove the Assy 4. By means of the proper open screw, unscrew the nuts fastening the POWER MOS board to the Assy and remove the board c) Installation 1. In order to install the new Electronics Assy with POWER MOS board, perform the removal operations in reverse order 2. By following the procedures of Card 8 of Chapter 4, calibrate the Performance Monitor circuit (if present); during the calibration do not take into account the steps relevant to the Noise Ring distance 6.2.1.3 Replacement of the LNFE Assy a) Required Tools - set of screwdrivers - set of Allen wrenches b) Removal 1. By means of the proper screwdriver, unscrew the six screws (Chapter 9, Figure 9.1.29 pos. 1) locking the front cover (Chapter 9, Figure 9.1.29 pos. 2) and open the former
30 kW S-BAND/U ANTENNA GROUP CORRECTIVE MAINTENANCE 6.4 Rev. C 2. Disconnect the LNFE Assy (Chapter 9, Figure 9.1.30 pos. 4) cabling by tacking note of its disposition 3. By means of the proper Allen wrench, unscrew the four nuts (Chapter 9, Figure 9.1.30 pos. 5) fixing the LNFE Assy to the support (Chapter 9, Figure 9.1.30 pos. 6) 4. Remove the LNFE Assy from its support c) Installation 1. In order to install the new Front End, perform the removal operations in reverse order 2. By following the procedures of Card 6 of Chapter 4, calibrate the VCO 6.2.1.4 Replacement of the RTM CONT B Board a) Required Tools - set of open wrenches b) Removal 1. By means of the proper screwdriver, unscrew the six screws (Chapter 9, Figure 9.1.29 pos. 1) locking the front cover (Chapter 9, Figure 9.1.29 pos. 2) and open the former 2. Remove the RTM CONT B Board (Chapter 9, Figure 9.1.31 pos. 2) cabling by tacking note of its disposition 3. By means of the proper open wrench, unscrew the nuts (Chapter 9, Figure 9.1.31 pos. 3) fastening the RTM CONT B Assy to the cover and remove the Assy 4. By means of the proper open screw, unscrew the nuts fastening the RTM CONT B Board to the Assy and remove the board c) Installation 1. In order to install the new RTM CONT B Board, perform the removal operations in reverse order 2. Carry out the following operations: - by following the procedures of Card 5 of Chapter 4, adjust the Trigger Delay - by following the procedures of Card 6 of Chapter 4, calibrate the VCO - by following the procedures of Card 8 of Chapter 4, calibrate the Performance Monitor circuit (if present); during the calibration do not take into account the steps relevant to the Noise Ring distance
30 kW S-BAND/U ANTENNA GROUP CORRECTIVE MAINTENANCE 6.5 Rev. C 6.2.1.5 Replacement of the NIFB Assy a) Required Tools - set of screwdrivers b) Removal 1. By means of the proper screwdriver, unscrew the six screws (Chapter 9, Figure 9.1.29 pos. 1) locking the front cover (Chapter 9, Figure 9.1.29 pos. 2) and open the former 2. Remove the NIFB Assy (Chapter 9, Figure 9.1.31 pos. 4) cabling by tacking note of its disposition 3. By means of the proper screwdriver, unscrew the four screws (Chapter 9, Figure 9.1.31 pos. 5) fastening the NIFB Assy to the Electronics Assy mechanical frame and remove the NIFB c) Installation 1. In order to install the new NIFB Assy, perform the removal operations in reverse order 2. By following the procedures of Card 6 of Chapter 4, calibrate the VCO 6.2.1.6 Replacement of the Magnetron To replace the Magnetron, perform the procedures of Card 4 of Chapter 4. 6.2.2 Replacement Procedures for the Antenna Pedestal S/U Unit 6.2.2.1 Driving Belt Replacement a) Required Tools - Set of open wrenches - Set of Allen keys - Set of screwdrivers b) Removal 1. By using the proper open wrench, loose and remove the four nuts (Chapter 9, Figure 9.1.32 pos. 1) fixing the cover (Chapter 9, Figure 9.1.32 pos. 2) and remove the former 2. Disconnect the connector of the Cable Assy (Chapter 9, Figure 9.1.33 pos. 1) from the one coming from the RTM 3. By using the proper open wrench, loose and remove the bolts (Chapter 9, Figure 9.1.33 pos. 2) fixing the antirotating structure (Chapter 9, Figure 9.1.33 pos. 3) to the Pedestal
30 kW S-BAND/U ANTENNA GROUP CORRECTIVE MAINTENANCE 6.6 Rev. C structure 4. By using the proper open wrench, loose the four bolts (Chapter 9, Figure 9.1.34 pos. 1) fixing the Motor and the Gear Reduction Group plate (pos. 2) 5. By acting on the Motor, push the plate in order to release the Driving Belt (Chapter 9, Figure 9.1.34 pos. 4) 6. Remove the Driving Belt from its seats by paying attention to not damage the Cable Assy and the Rotating Joint c) Installation 1. In order to install the new Driving Belt, perform the removing steps in reverse order 6.2.2.2 Motor Replacement a) Required Tools - Set of open wrenches - Set of Allen keys - Set of screwdrivers b) Removal 1. By using the proper open wrench, loose and remove the four nuts (Chapter 9, Figure 9.1.32 pos. 1) fixing the cover (Chapter 9, Figure 9.1.32 pos. 2) and remove the former 2. By using the proper screwdriver, remove the Motor cabling from the 3 Φ Filter (Chapter 9, Figure 9.1.33 pos. 5) tacking note of its position 3. By using the proper open wrench, loose the stuffing tube (Chapter 9, Figure 9.1.34 pos. 3) of the Motor power supply cable 4. By using the proper Allen key, loose and remove the nuts (Chapter 9, Figure 9.1.34 pos. 4) fixing the Motor to the plate (Chapter 9, Figure 9.1.34 pos. 2) 5. Extract the Motor from the structure, paying attention. Not to damage the power supply cable c) Installation 1. In order to install the new Motor, perform the removal steps in reverse order 6.2.2.3 Reduction Group Replacement a) Required Tools
30 kW S-BAND/U ANTENNA GROUP CORRECTIVE MAINTENANCE 6.7 Rev. C - Set of open wrenches - Set of Allen keys - Set of screwdrivers b) Removal 1. Remove the Motor as described in para 6.2.2.2 2. By using the proper screwdriver, remove the cable-tightener (Chapter 9, Figure 9.1.33) from the Reduction Group 3. By using the proper open wrench, loose and remove the bolts fixing the Reduction Group (Chapter 9, Figure 9.1.33) to the plate (Chapter 9, Figure 9.1.34 pos. 2) 4. Extract the Reduction Group from the Pedestal structure paying attention. Not to damage the internal components c) Installation 1. In order to install the new Reduction Group, perform the removal steps from in reverse order 6.2.2.4 3 Φ Filter Replacement a) Required Tools - Set of open wrenches - Set of Allen keys - Set of screwdrivers b) Removal 1. By using the proper open wrench, loose and remove the four nuts (Chapter 9, Figure 9.1.32 pos. 1) fixing the cover (Chapter 9, Figure 9.1.32 pos. 2) and remove the former 2. By using the proper screwdriver, remove the 3Φ Filter (Chapter 9, Figure 9.1.33 pos. 5) cabling tacking note of its original position 3. By using the proper Allen key, loose and remove the screws fixing the 3Φ Filter and remove the filter c) Installation 1. In order to install the new 3Φ Filter, perform the removing steps in reverse order 6.2.2.5 Rotating Joint Replacement a) Required Tools
30 kW S-BAND/U ANTENNA GROUP CORRECTIVE MAINTENANCE 6.8 Rev. C - Set of open wrenches b) Removal 1. Disconnect the connector of the Antenna cable from the Rotating Joint (Chapter 9, Figure 9.1.32 pos. 3) 2. By using the proper open wrench, loose and remove the four nuts (Chapter 9, Figure 9.1.32 pos. 1) fixing the cover (Chapter 9, Figure 9.1.32 pos. 2) and remove the former 3. By using the proper open wrench, loose and remove the nuts fixing the Rotating Joint to the flange (Chapter 9, Figure 9.1.32 pos. 4) 4. By using the proper open wrench, loose and remove the bolts (Chapter 9, Figure 9.1.33 pos. 2) fixing the antirotating structure (Chapter 9, Figure 9.1.33 pos. 3) to the Pedestal structure 5. Pull the Rotating Joint until the connector of the Antenna Cable is visible 6. Disconnect the Cable Assy connector from the Rotating Joint 7. Remove the Rotating Joint c) Installation 1. In order to install the new Rotating Joint, perform the removal steps in reverse order. 6.2.2.6 Antsign Board Replacement a) Required Tools - Set of open wrenches - Set of screwdrivers b) Removal 1. By using the proper open wrench, loose and remove the four nuts (Chapter 9, Figure 9.1.32 pos. 1) fixing the cover (Chapter 9, Figure 9.1.32 pos. 2) and remove the former 2. Remove the connectors from the Antsign Board (Chapter 9, Figure 9.1.33 pos. 8) tacking note of their position 3. By using the proper screwdriver, loose and remove the screws fixing the board and remove the former c) Installation 1. In order to install the new board, perform the removal steps in reverse order
30 kW S-BAND/U ANTENNA GROUP CORRECTIVE MAINTENANCE 6.9 Rev. C WARNING THE CONNECTORS OF THE BOARD ARE OF DIFFERENT TYPE SO IT IS NOT POSSIBLE TO INSERT A CONNECTOR IN A WRONG POSITION. WHEN INSERTING THE CONNECTORS DO NOT FORCE THEM; IF THE INSERTION IS NOT EASY, IT MEANS THAT THE CONNECTOR IS NOT INSERTED IN THE PROPER POSITION. 6.2.2.7 Optical Read-out Board Replacement a) Required Tools - Set of open wrenches - Set of screwdrivers b) Removal 1. By using the proper open wrench, loose and remove the four nuts (Chapter 9, Figure 9.1.32 pos. 1) fixing the cover (Chapter 9, Figure 9.1.32 pos. 2) and remove the former 2. Remove the flat cable connector (Chapter 9, Figure 9.1.33 pos. 9) from the Optical Read-out Board (Chapter 9, Figure 9.1.33 pos. 10) 3. By using the proper screwdriver, loose and remove the screws (Chapter 9, Figure 9.1.33 pos. 11) fixing the board to the support and remove the board c) Installation 1. In order to install the new board, perform the removal steps in reverse order 6.2.2.8 Antenna Generator Disk Replacement a) Required Tools - Set of open wrenches - Set of screwdrivers b) Removal 1. By following the steps of previous para 6.2.2.1, remove the Driving Belt 2. By following the steps of previous para 6.2.2.7, remove the Optical Read-out Board 3. By using the proper tools, remove the Belt Pulley from the shaft and remove the pulley 4. By using the proper screwdriver, loose and remove the screws (Chapter 9, Figure 9.1.33 pos. 12) fixing the
30 kW S-BAND/U ANTENNA GROUP CORRECTIVE MAINTENANCE 6.10 Rev. C Antenna Generator Disk (Chapter 9, Figure 9.1.33 pos. 13) to the Belt Pulley and remove the disk c) Installation 1. In order to install the new disk, perform the removal steps in reverse order. 2. By following the steps of Card 7 of Chapter 4, align the Antenna Generator Disk with the ship’s bow.
30 kW S-BAND/U ANTENNA GROUP CORRECTIVE MAINTENANCE 6.11 Rev. C 6.2.3 Belt installation tension The required level of pre-tension will lie between the maximum and minimum values calculated from the formulae below. As a general guide the lower level will be applicable to lightly loaded, smooth running drives, whereas drives subjected to high shock loads or frequent starts will be tensioned at the higher level. Deflecting Force (F) 1 Maximum pre-tension P x 50 F = -------- = 36.2 Kg V 2 Minimum pre-tension P x 25 F = --------- = 18.1 Kg V Belt deflection S d = ------- = 6.3mm 50 Where S = Belt span (mm) P = Transmitted power (KW) V = Belt speed m/s Note Pitch x N x rpm V = --------------------------- (m/s) 60000 N = Grooves on driver Rpm = rpm of driver
30 kW S-BAND/U ANTENNA GROUP PART LIST 7.1 Rev. C CHAPTER 7 PART LIST 7.1 Introduction This chapter provides the list of the 30 kW S-BAND/U Antenna Group replaceable parts. 7.1.1 Part List The parts list is divided into major assemblies. All parts attached to the assemblies are listed in Part List Tables. The Parts List Tables consist of eight columns as follows: - Column 1: POS. (Position): the column reports the replaceable parts position in the reference figure - Column 2: DESCRIPTION: the column includes the descriptive identification data of the replaceable part - Column 3: DRAWING SPECIFICATION NUMBER OR TYPE: the column reports the drawing specification number or the type of the replaceable part assigned by the supplier - Column 4: REQUIRED QUANTITY (N): the column indicates, for each replaceable part, how many of them are assembled on the equipment 7.1.2 Part Location Illustration Figures from Chapter 9, Figure 9.1.35 to Figure 9.1.38 provide the location of the components. The position numbers of items shown in the figure are referenced in the related Parts List Tables.
30 kW S-BAND/U ANTENNA GROUP PART LIST 7.2 Rev. C 7.2 Part list tables Table 7.2.1 - List of Items Shown in Chapter 9, Figure 9.1.35 POS. DESCRIPTION DRAWING SPECIFICATION NUMBER OR TYPE REQUIREDQUANTITY(N) Ref 30 kW S-BAND/U Antenna Group Unit LSSGRP001 1 1 Parts List of the RTM 30S/U/D Unit 303770A1 1 2 Antenna Pedestal S/U Unit: - Type 03R-039 303830A1 1 3 Performance Monitor Arm for Pedestal 03R-039 303813A1 1 Table 7.2.2 - Parts List of the RTM 30S/U/D Unit (Figure 9.1.36) POS. DESCRIPTION DRAWING SPECIFICATION NUMBER OR TYPE REQUIREDQUANTITY(N) 1 POWER MOS Board 972551A3 1 2 RTM CONT B Board 972981A2 1 3 NIFB Assy 303186A2 1 4 Fuse 3.15A 250V DLY (F1) 54F010P020 1 5 Fuse 2A 250V DLY (F2) 54F010P018 1 6 LNFE Assy 302311A5 1 7 S Band Magnetron 89A505P020 1 8 Noise Generator Assy 302237A2 1 Table 7.2.3 - Parts List of the Antenna Pedestal S/U Unit Type 03R-039 (Figure 9.1.37 and Figure 9.1.38) POS. DESCRIPTION DRAWING SPECIFICATION NUMBER OR TYPE MOUNTEDQUANTITY(N) 1 Motor Group 71M416P001 1 2 Rotating Joint 89A068P003 1 3 Gear Reduction Group 36G106P001 1 4 Driving Belt 36A004P010 1 5 Antenna Generator Disk 302660P002 1 6 Optical Read-out Board 972671A1 1 7 Flat Cable with 8 Wires 302445A1 1 8 Antsign Board 972661A1 1 9 Cable Assy with 7/16” Connector 56C034P003 1 10 3Φ Filter 302891A2 1
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.1 Rev. C CHAPTER 8 INSTALLATION S-band Antenna Group including 12 feet Antenna and Pedestal with 30 kW Transceiver upmast TABLE OF CONTENTS CHAPTER 8 INSTALLATION ......................................................................................................... 8.1 8.1 Introduction................................................................................................................. 8.2 8.1.1 Shipping.......................................................................................................................8.2 8.1.2 Unpacking....................................................................................................................8.2 8.1.3 Storage ........................................................................................................................8.3 8.1.4 Handling.......................................................................................................................8.3 8.2 Specifications ............................................................................................................. 8.3 8.2.1 Dimensions and weights (also see outline drawings) .................................................8.3 8.2.2 Required power ...........................................................................................................8.4 8.2.3 Environmental Data .....................................................................................................8.4 8.3 Installation................................................................................................................... 8.4 8.3.1 Installation Principles...................................................................................................8.4 8.3.2 Mechanical installation ................................................................................................8.6 8.3.2.1 Pedestal with transceiver ........................................................................................... 8.6 8.3.2.2 Antenna .................................................................................................................... 8.7 8.3.2.3 Safety Switch .............................................................................................................. 8.7 8.3.2.4 Performance Monitor Arm .......................................................................................... 8.8 8.3.3 Electrical installation ....................................................................................................8.8 8.3.3.1 Multicore Cable........................................................................................................... 8.8 8.3.3.2 Safety Switch .............................................................................................................. 8.9 8.3.3.3 Performance Monitor Arm .......................................................................................... 8.9 8.3.3.4 Grounding................................................................................................................... 8.9 8.3.3.5 Installation Check-out ............................................................................................... 8.10 8.3.4 Pre Setup Procedures ...............................................................................................8.10 8.3.4.1 Antenna Turning Motor power Voltage and Phase .................................................. 8.10 8.3.4.2 Head Line alignment procedure ............................................................................... 8.11 8.4 Installation figures and drawings .............................................................................. 8.12 8.5 Annex........................................................................................................................ 8.24
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.2 Rev. C 8.1 Introduction This chapter of the Technical manual can be used as a self-contained Installation Manual for the S-band Antenna Group including 12 feet Antenna and Pedestal with 30 kW Transceiver upmast. It contains necessary information, pictures and drawings to handle, assemble and install this unit as a part of the complete Radar Equipment. Actions how to prepare this unit for the Radar Equipment Setup Procedure are also described. 8.1.1 Shipping Following general rules apply: - Inspection for damage during transport - When the unit(s) arrives at destination, inspection should be performed immediately to register any damage that may have occurred during transfer - The customer is normally responsible for insurance during the transportation. If any damage is found, both the insurance company and the shipping agent must be informed immediately 8.1.2 Unpacking The unit parts are placed in cardboard boxes covered with a plastic sheet. Each box includes a protecting polyurethane box shaped for the contained parts. The following rules should be observed: - Units must be transferred on board still packed into their boxes - When the units are removed from their boxes they must be left in their protective plastic cover until installation It is advisable to keep the packing material for possible future use the plastic sheet in which the unit is wrapped can be used to protect it during installation and maintenance procedures. In addition to the various main parts forming the unit (see par. 8.3.2 below) there is further materiel included in the delivery. Those additional things are: - Technical Manual with Installation Manual included - Installation Kit (Terminals, clamps, connectors etc.) - Standard Spare Part Kit (Fuses etc.) The Installation Kit and the Spare Part Kit is necessary for the installation and operation of the equipment, and must be kept by them who perform the installation work. Contents of the Kits should be checked immediately after unpacking, using the materials list contained in the box. The Manufacturer will
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.3 Rev. C not accept claims for missing items unless presented immediately after unpacking. 8.1.3 Storage After the material contained in the boxes has been inspected in the presence of customer and it has been verified that no damage has occurred, the unit shall be stored in its original packing until the time of installation. The storage premises must be dry and well protected. If the units must be kept in storage for more than one month, it is advisable to insert hygroscope substances, such as silicon gel salts, in the crates. See par. 8.2 Specification, (Environmental Conditions) 8.1.4 Handling The antenna and the pedestal must be run up the mast separately and then assembled. The pedestal with attached transceiver is lifted by crane. Use slings attached to the four eyebolts fitted on top of the pedestal. Minimum angle at the base is 60º. See Figure 1 (Lifting by crane) The pedestal contains delicate electronic components - handle accordingly. The antenna is also lifted by crane using its two eye-bolts. The antenna surface is sensitive to impacts and pressure. Any deformation of the antenna surface can reduce the radar performance. 8.2 Specifications 30kW S-Band/U Antenna Group 8.2.1 Dimensions and weights (also see outline drawings) Length 959 mm Width 481 mm Height 1000 mm Weight of pedestal with transceiver 165 Kg Weight of antenna 90 Kg Swing circle with 12 ft antenna 3700 mm
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.4 Rev. C 8.2.2 Required power 220/380 VAC, 3Φ, 50 Hz or Alternatives 255/440 VAC, 3Φ, 60 Hz Power consumption 4200 VA 8.2.3 Environmental Data Operating temperature -25°C / +55°C Storage temperature -25°C / +70°C Relative humidity Up to 95% at +40° Water resistance, Salt spray, Vibrations etc as per IEC 60945 Wind resistance, relative wind 100 knots 8.3 Installation 30kW S-Band/U Antenna Group 8.3.1 Installation Principles In order to obtain the best radar performance and accessibility, the following precautions should be used: - Space for the antenna to swing freely. See 8.2 above (Specifications; Antenna) - Safety and easy access for maintenance purposes. It is preferable to use a platform with safety handrail. Figure 2 (Suggested Masthead mounting) - The antenna to be accessible in all directions - Avoid exposure to exhaust fumes from the funnel - Avoid strong vibrations - Avoid interference between two antennas - Avoid obstacles in the radar beam, especially ahead of athwartships directions If two radar sets are installed, their antennas should be installed on different levels. The antennas can be mounted, either on a single mast construction, so they are on top of each-other, as illustrated in Figure 2 (Suggested Masthead mounting),
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.5 Rev. C or the antennas can be mounted on a platform, Figure 3 (Suggested Antenna mounting), one on portside and one on starboard side. The following formula and drawing, as illustrated in Figure 4 (Antenna Position), will help you to determine the correct distance and height between the two radar antennas. The 25° angle on the drawing is the actual vertical beam-width with a safety margin included. Example: “H=L/3”, H = height between the two antennas L = the distance between the two antennas If the distance L is 6m, then the height should be 6/3 = 2m. Blind sectors towards the bow and within a few degrees on port and/or starboard side caused by the structure of the ship must be avoided with great care. In case of a blind sector at the bow in mid-ships’ position, it is advisable to mount the antennas on the starboard side of the ships’ keel-line. When obstacles are sufficiently far from the antenna, they will result in a blind sector on the radar display with approximately the same amplitude as observed by the human eye, but these obstacles can produce false echoes. An echo produced by an obstacle close to the antenna, can be suppressed by reflecting the antenna-beam skywards by mounting a reflector made of metal, as also illustrated in Figure 2 (Suggested Masthead mounting). This solution however does not eliminate the blind sector, but will reduce false echoes produced by the obstacle. The best position for the reflector can be found by testing out different positions. It is highly recommended that the shipyard submit the drawings of the radar antenna position(s) to the Manufacturer for approval. The Installation consists of following basic steps: - Mount the Antenna Pedestal without the antenna on the mast - Make relevant cable connections - Install and connect the Performance Monitor arm - Install the Safety Switch - Mount the Antenna on the Antenna Pedestal
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.6 Rev. C NOTE Antenna pedestal should be installed in such way that the performance monitor arm is not facing funnels or other big ship obstruction. Sector blanking is enabled to prevent false echoes caused by funnels and/or big ship construction (see above). If performance monitor arm is positioned, within this blanking area, the pedestal must be turned because the radar performance monitor is not working where there is no transmission in the sector of its sensor. Installation of Safety Switch is compulsory. It is recommended to be installed at the bottom of the stairs giving access to the Antenna Pedestal. The waterproof switch is supplied by Manufacturer, but a connection cable (2x2,5mm2) should be provided by the shipyard. The Antenna Group must be covered by plastic sheet during any painting performed after the installation. NOTE In no case, the Antenna Array should be used to hoist the assembly up the mast. 8.3.2 Mechanical installation The S-band/U Antenna Group consists of following units and type designations: Pedestal with transceiver 03R039 with 09N-011 12 feet antenna 02R-039B Performance monitor arm 303813A1 Safety switch 74X376P001 8.3.2.1 Pedestal with transceiver Prepare the platform for mounting of the pedestal, with its transceiver. Hole diameters and distances are evident from drawing: Figure 5 (Dimension Drawing). The pedestal should be mounted with the transceiver unit pointed astern. However the antenna swinging plane must be horizontal in all directions when ship is upright on even keel. Consider giving ample space for service, especially astern of the antenna group. If such space can not be achieved, contact Manufacturer for installation alternatives.
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.7 Rev. C NOTE The plastic protection cover on the pedestal rotary joint must not be removed until just before mounting the antenna. Anyhow the rotary joint must not be left uncovered when the antenna is not mounted NOTE The fixing materials to fasten the antenna pedestal to the ship’s platform are not provided by the manufacturer. Assuming a platform plate thickness of 20 mm, four M20 stainless steel bolts of 80 mm length, with relative nuts grooves and washers, must be used. The tightening couple is 256 Nm 8.3.2.2 Antenna The antenna and the pedestal must be run up the mast separately and then assembled. The installation procedure of the antenna with fixed coax cable to the antenna pedestal consists of the following steps: - Remove the bolts from the Antenna shaft, which will be used to fasten the Antenna (Antenna Support) to the Pedestal - The Antenna must be lifted in the mounted eye-bolts. Also see 8.1.4 above, Handling - With the antenna hoisted, lay it on the pedestal matching the six leading bolts with the relevant - wholes, taking care that the front of the antenna is orientated at the same direction as the arrow on the antenna shaft - Tighten all antenna attaching bolts. The tightening couple is 130Nm - Insert the 90 degrees connector of the antenna coax cable on the rotary joint connector and secure it by fastening the attaching ring 8.3.2.3 Safety Switch Installation of safety switch is compulsory. The safety switch is supplied by the Manufacturer. It is recommended to place the safety switch at the bottom of the stairs that are giving access to the radar mast. The switch must be mounted with the cable glands pointing down. Connect the cable as described in 8.3.3 below Electrical installation.
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.8 Rev. C 8.3.2.4 Performance Monitor Arm To install the P.M. Arm proceed as follows: - Open the cover of the pedestal - Remove the 4 screws securing the small plate on the Antenna Pedestal - Install the O-ring on the fixing plate of the P.M. ARM - Draw the cable from the PM-arm through the supporting plastic pipe and through the hole in the cast wall over the antenna generator disk as evident from Figure 9 (Pedestal) - Mount the PM-arm angled upwards - Connect cable as described in 8.3.3 below Electrical installation 8.3.3 Electrical installation The electrical installation in the 30 kW S-Band/U Antenna Group consists or cabling and connection to terminals, Figure 6 (Terminals Drawing), as described below. 8.3.3.1 Multicore Cable Also see Annex 8.5.1 Multicore Cabling and Termination Principles. NOTE Use the installation materials for the Multicore cable which are delivered by the manufacturer to ensure proper connection Normally the cable (16 core+3 Coax), P/N 55M45455P002(3), is delivered to a length of 60m. The Multicore cable includes wires for Power, Video, Trigger and Antenna data. It shall be used for connection between the Antenna Group and the External S-Band PSU, as well as for connection between the External S-Band PSU and the display/interswitch unit. It is required to handle this cable with particular care. The Antenna end of the multi-core cable shall be connected to : - TB 9&10 and J1/J3 on the RTM Control B Board in the transceiver and according to separate system drawings relevant to the application of the 30 kW S-Band/U Antenna Group. Also see Figure 7 (Cabling) and Figure 8 (Control B board Drawing)
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.9 Rev. C - TB Filter at the inside bottom of the pedestal chassi, Figure 9 (Pedestal), for the 3 phase motor power cores - TB 1 at the inside left bottom of the transceiver chassi, according to system drawings relevant to the application of the 30kW S-Band/U Antenna Group Terminals, clamps and connectors etc. included in the Installation Kit must be used. Content of the installation Kit can vary depending on the Application of the 30kW S-Band Antenna Group. E.g. if Multicore cable is already terminated in factory corresponding parts are excluded. For the termination of the Multicore Cable in the External S-Band PSU see Installation Manual for that unit. 8.3.3.2 Safety Switch The safety switch is supplied by the Manufacturer. Cable from the switch (normally placed at bottom of Radar Antenna mast) to the Transceiver unit is not included. - Check the Safety Switch is placed as described in par. 8.3.2 (Manual Installation) - Connect the two poles of the safety switch, Figure 10 (Safety Switch), to TB1 SF/SFR placed down left at the inside of the transceiver chassis (see Figure 7 (Cabling)). - The cable gland not used must be properly sealed - Carefully make sure that the switch is closed in “I” (On) position and open in “0” (Off) position. 8.3.3.3 Performance Monitor Arm - Open the cover of the pedestal - After mounting the PM-Arm as described in 8.3.2 above connect the PM-Arm cable to the plug and put it in the socket at TB1 RM/RM05 on the ANT.SIGN.PCB. placed at the inside bottom of the pedestal chassis. Figure 9 (Pedestal) 8.3.3.4 Grounding Connect a tinned braided copper wire (>25mm2) between the Ground Terminal on the Antenna Pedestal and the radar mast.
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.10 Rev. C 8.3.3.5 Installation Check-out After wiring connections, before closing the antenna pedestal following procedures and controls must be carried out to prevent any failure due to incorrect installation. - Clean the circuit boards with an antistatic brush - Use a vacuum cleaner to remove any possible particles from the cabinets - Check for proper cable bends to assure a proper amount of slack - Check that ground connections are dully tightened as well as terminal connections on the terminal boards - Check if cable glands have a firm grip around the cables 8.3.4 Pre Setup Procedures This paragraph provides information concerning the preliminary controls and procedures to be performed as a completion of the electrical installation and before supplying the unit with power and before performing the System Setup Procedure: NOTE Powering the Radar System is not included in the Pre Setup Procedure - Carry out a careful visual inspection of the installed components referring to the layouts of the unit and to the interconnection drawings - Carefully check the integrity of the fuses - Check that the switches S1 and S2 on the transceiver Control B board are in position “0” NOTE Following items must be thoroughly checked: 8.3.4.1 Antenna Turning Motor power Voltage and Phase Check inside the Antenna Turning Motor junction box that the Star or Delta configuration corresponds to the used 3 phase ship main power and frequency, as described below:
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.11 Rev. C Also check that TB 3 in the External S-Band PSU is configured for same power (see separate manual). 8.3.4.2 Head Line alignment procedure If the equipment is not equipped with a 360 degree software adjustment, a course alignment of the radar headline should be carried out as follows before the final set up procedure. - Turn the Radar main switch off and, to make sure that the Antenna Motor can not be started, switch the Safety Switch Off (0) - Remove one Pedestal side cover by loosing the 4 fixing bolts - By using the proper Allen Keys (hexagonal keys), loosen the six screws fixing the Antenna Generator Disk to the Belt Pulley. - Rotate the Antenna by hand to athwartship position to align the Antenna Beam with the ship’s bow - Rotate the Antenna Generator Disk until the bow indication on the disk (the deeper slot) is in the Optical Read-out unit gap. Figure 9 (Pedestal) - Tighten the six hexagonal screws fixing the Antenna Generator Disk - Remount the cover of the Antenna Pedestal - Turn the Safety Switch to position On (I)
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.12 Rev. C 8.4 Installation figures and drawings The following figures and drawings are included after this page: Figure 1 (Lifting by crane) Figure 2 (Suggested Masthead mounting) Figure 3 (Suggested Antenna mounting) Figure 4 (Antenna Position) Figure 5 (Dimension Drawing) Figure 6 (Terminals Drawing) Figure 7 (Cabling) Figure 8 (Control B board Drawing) Figure 9 (Pedestal) Figure 10 (Safety Switch)
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.13 Rev. C Fig 1 Lifting by crane WARNING Never pass or stay under any lifted object. >60°
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.14 Rev. C Fig 2 Suggested Masthead Antenna mounting
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.15 Rev. C Fig 3 Suggested Antenna mounting
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.16 Rev. C Fig 4 Atenna positions
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.17 Rev. C Fig 5 Dimension drawing All dimensions are in mm
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.18 Rev. C Fig 6 Terminals drawing
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.19 Rev. C Fig 7 Cabling 30kW S-Band/U Antenna Group Fix the cable inside the unit: A Route the cable inside the unit following the existing cabling to obtain free installation when closing the door. Connect the cables on the terminal boards on the RTM control-B: B
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.20 Rev. C Verify that you have free installation when closing the door: C
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.21 Rev. C Fig 8 Control B Board
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.22 Rev. C Fig 9 Pedestal Antenna Pedestal TB1: PM-Arm TB Antenna motor 3 Phase Main Power OPTICALREAD-OUT GENERATOR DISK TB 1TB PM-CABLE HOLE1
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.23 Rev. C Fig 10 Safety Switch All dimensions are in mm
30 kW S-BAND/U ANTENNA GROUP INSTALLATION 8.24 Rev. C 8.5 Annex Special extensive illustrated instructions are included in this paragraph 8.5.1 Multicore Cabling and Termination Principles
30 kW S-BAND/U ANTENNA GROUP ANNEX 1 Rev. C 55M455P002(3) MULTI CORE CABLING AND TERMINATION PRINCIPLES FOR • X-Band Antenna Group including 6 or 9 feet Antenna and Pedestal with 25 kW Transceiver upmast • X-Band Antenna Group including 6 or 9 feet Antenna and Pedestal with 12 kW Transceiver upmast • 30kW S-Band Transceiver downmast excluding Power Supply Unit • S-Band Antenna Group including 12 feet Antenna and Pedestal with 30 kW Transceiver upmast • External Power Supply Unit for S-Band Transceiver
30 kW S-BAND/U ANTENNA GROUP ANNEX 2 Rev. C Installation Instructions Multicore Cable Technical Specification Core overview of Multicore Cable: Cable handling Dismantle the outer isolation of the cable for 70 cm, however in case of 12 or 25 kW X-Band/U Antenna Group the length must be 180 cm. Remove most of the shield, let it be 5 cm with shield perceptive to vision: 7x0.50mm2 4x0.50mm2 shielded Cores from 6 to 9 marked also on the inner core 5x4.50mm2 Cores from 1 to 5 3xRG59Blue Red Black 5 cm. remaining shield
30 kW S-BAND/U ANTENNA GROUP ANNEX 3 Rev. C Main Shield and inner shields handling Take back the shield: Dismantle the outer isolation of the 0.5 mmq shielded cable. (Let it remain 4 cm with isolated shielded cable). Open the shield near the outer isolation, and pull out the centre cable without cutting the shield: Insert the shields from the inner cables into the main cable shield and take back the shields:
30 kW S-BAND/U ANTENNA GROUP ANNEX 4 Rev. C Cable Holder installation See below, the correct procedure for installation of cable, in to the cable holder. Refer to the “Main Shield and inner shields handling” for shields handling. Fix the shields with tape: Insert the cable in the unit, and fix the cable to the cable holder
30 kW S-BAND/U ANTENNA GROUP ANNEX 5 Rev. C Cable Gland Installation See below, the correct procedure for installation of cable, in to the cable gland: Pass the wires trough the cable gland: Refer to “Main Shield and inner shields handling” section, for shields handling. Turn the shields over the first metal ring, and trim exceeding shields: Insert the cable with all parts in to the cable gland:
30 kW S-BAND/U ANTENNA GROUP ANNEX 6 Rev. C After that, tight it hard, and be sure that the shield will remain inside the cable gland: Put some silicon compound, in the remaining space between the cable gland bolt and the cable.
30 kW S-BAND/U ANTENNA GROUP ANNEX 7 Rev. C 0.5 mmq cores Cut the core to the wanted length and dismantle the core for 10mm: Insert and crimp the blue-end terminal: Note: End terminal should always be used. Double connection in one terminal (yellow terminal): Triple connection in one terminal (grey terminal):
30 kW S-BAND/U ANTENNA GROUP ANNEX 8 Rev. C 4.5 mmq cores Cut the core to the wanted length and dismantle the core for 10mm: Cut-out a few conductors in order to make easy the insertion of the grey-end terminal: Insert and crimp the grey-end terminal: Note: End terminal should always be used.
30 kW S-BAND/U ANTENNA GROUP ANNEX 9 Rev. C RG coaxial cables Mechanical details of BNC connector: Cut the cable to the wanted length. Dismantle the outer isolation of the RG coaxial cable without damaging the shield, and put the related part of the BNC connector as below: Details related to the ring of the BNC connector.
30 kW S-BAND/U ANTENNA GROUP ANNEX 10 Rev. C Take back the shield on the ring and trim exceeding shield: Dismantle the outer isolation of the centre core without damaging the centre core and be sure that the shield is not shorted with the centre core: Solder the centre core with the BNC pin. Be careful not damage the isolation (i.e. burned) during the solder process: Mount the BNC connector as below:
30 kW S-BAND/U ANTENNA GROUP ANNEX 11 Rev. C Shielded conductors Cut the cable to the wanted length. Dismantle the outer isolation of the 0.5 mmq shielded cable. (Let it remain 4 cm with isolated shielded cable): Open the shield near the outer isolation, and pull out the centre cable without cutting the shield: Refer to the “Main Shield and inner shields handling” for shields handling.
30 kW S-BAND/U ANTENNA GROUP FIGURES 9.1 Rev. C CHAPTER 9 FIGURES

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