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Konsberg EM 124 Installation Manual

Multibeam echo sounder
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Kongsberg EM 124
Multibeam Echo Sounder
Installation Manual
Image: Bathymetry of the Northern Portion of the Mariana Trench.
Courtesy of Dr James V. Gardener, University of New Hampshire.
443140/A
March 2019 © Kongsberg Maritime AS

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  • Page 1 Kongsberg EM 124 Multibeam Echo Sounder Installation Manual Image: Bathymetry of the Northern Portion of the Mariana Trench. Courtesy of Dr James V. Gardener, University of New Hampshire. 443140/A March 2019 © Kongsberg Maritime AS...
  • Page 2 Document information • : Kongsberg EM 124 Product • : Installation Manual Document • : 443140 Document part number • Revision • : 11 March 2019 Date of issue Copyright The information contained in this document remains the sole property of Kongsberg Maritime AS.

  • Page 3: Table Of Contents

    Receiver Unit description ..................14 Processing Unit description..................14 Hydrographic Work Station description..............15 Support information ......................16 PREPARATIONS ..............17 Tools, equipment and consumables required for EM 124 installation......17 Personnel qualifications ....................18 Sonar room requirements....................19 Environmental requirements ..................19 Size and access requirements .................19 Requirements for insulation, heating and ventilation..........20...
  • Page 4 Installing the TX Transducers into the mounting frames ..........60 Rules for transducer handling ..................63 Painting the transducer face .....................65 Approved anti-fouling paints ...................67 INSTALLING THE EM 124 HARDWARE UNITS......69 Transmitter Unit.......................70 Installing the Transmitter Unit ................71 RIO-P board - dip switch setting ................73 Receiver Unit ........................74...
  • Page 5 Installation Manual Cable drawings and specifications ................. 114 RS-232 serial line using three wires and RJ45 connector ........115 RS-422 serial line using five wires and RJ45 connector ........116 Clock synchronisation (1PPS) using a coax cable ..........117 External synchronisation ..................118 Remote control .....................
  • Page 6 Kongsberg EM 124 443140/A...

  • Page 7: About This Manual

    Purpose of manual The purpose of this manual is to provide the information, procedures and basic drawings required for the physical installation of the EM 124. Target audience The manual is intended for technical personnel; such as skilled shipyard workers, electricians, qualified engineers and naval architects.
  • Page 8 The shipowner and shipyard doing the installation are responsible for obtaining and paying for such approval. The outline dimensions of the EM 124 units are found in the Drawing file chapter in this manual. Online information For information about the EM 124 and other products from Kongsberg Maritime, visit our website.

  • Page 9: Kongsberg Em 124

    Kongsberg EM 124 Kongsberg EM 124 Topics System description, page 10 Technical details, page 11 System diagram, page 12 System units, page 13 Support information, page 16 443140/A...

  • Page 10: System Description

    The EM 124 is designed to perform seabed mapping to full ocean depth with an unsurpassed resolution, coverage and accuracy. The system is cost effective, reliable, and easily operated. The design of the EM 124 is based on more than 50 years of hydrographic experience with echo sounders, sonars and underwater positioning for civilian and military use.

  • Page 11: Technical Details

    In shallow waters due care is taken to the near field effects through nearfield focusing individually applied in the different sectors. EM 124 applies one focus range for each of the transmit sectors which are used for shallow water environment. Dynamic beam focusing is used for the reception beams.

  • Page 12: System Diagram

    Kongsberg EM 124 Installation Manual System diagram The system diagram identifies the main components of a basic EM 124 system. Only the main connections between the units are shown. Detailed interface capabilities and power cables are not shown. Hydrographic Work...

  • Page 13: System Units

    A transducer is a device that converts one form of energy to another. In an echo sounder system the transducer converts between electric energy and sound. The EM 124 uses separate transducer arrays for transmitting and receiving sound pulses. Both transducer arrays have several modules which are assembled in mounting frames.

  • Page 14: Transmitter Unit Description

    The Receiver Unit is normally located in a "sonar room" close to the transducer arrays. Processing Unit description The EM 124 Processing Unit is provided to process the signals to and from the Transmitter and Receiver Units. The EM 124 Processing Unit is an industrial computer using both COTS (commercial off-the-shelf) components and custom made components.

  • Page 15: Hydrographic Work Station Description

    The unit can also be placed in the "survey room" or on the bridge. Hydrographic Work Station description The Hydrographic Work Station is the operator station for the EM 124. A dedicated maritime computer is provided with the EM 124 Multibeam Echo Sounder. It is set up with all necessary software.

  • Page 16: Support Information

    Kongsberg EM 124 Installation Manual Support information Should you need technical support for your EM 124 you must contact a Kongsberg Maritime office. A list of all our offices is provided on our website. You can also contact our main support office in Norway.

  • Page 17: Preparations

    Tools, equipment and consumables required for EM 124 installation In order to do the EM 124 installation, all necessary tools and equipment for mechanical work, cabinet installation and electrical wiring must be available. It is not practical to provide a detailed list of all necessary tools and equipment. You must be equipped with a standard set of tools.

  • Page 18: Personnel Qualifications

    Personnel qualifications The installation of the EM 124 is a demanding task. It is very important that the personnel involved in the installation tasks are competent and experienced craftsmen. As a minimum, the following certified craftsmen must be available.

  • Page 19: Sonar Room Requirements

    The EM 124 units must be installed in a dry and dust-free environment. The units are not fully protected against humidity, dust or water. It is important that the sonar room is kept dry. The EM 124 units must not be exposed to excessive temperatures, dust, moisture or humidity. Such conditions can cause corrosive attacks and subsequent failures to the electronic circuitry.

  • Page 20: Requirements For Insulation, Heating And Ventilation

    If the vessel is likely to operate in tropical conditions, a suitable air conditioning system must be installed. The air conditioning system must be able to provide an ambient temperature that does not exceed the maximum operating temperatures of the EM 124 units that are installed in the room.
  • Page 21 A minimum number of additional electrical outlets must be provided for other equipment. Cabling requirements The sonar room units are connected to other EM 124 units located in different compartments on the vessel. The units may also be connected to peripheral devices. If these cables pass through hatches or areas where they may be damaged, they must be run in conduits.

  • Page 22: Where To Install The Transducer

    Mount the transducer deep In order to achieve the best possible EM 124 performance, mount the transducer as deep as possible under the vessel’s hull. There are several reasons for this recommendation.

  • Page 23: Avoid Protruding Objects Near The Transducer

    Avoid protruding objects near the transducer Objects protruding from the hull will generate turbulence and flow noise. This will reduce the EM 124 performance. Protruding objects may be zinc anodes, transducers or even the vessel's keel. Holes and pipe outlets are also important noise sources, as well as rough surfaces caused by bad welding.

  • Page 24: Keep The Transducer Far Away From The Propellers

    When in operation, the noise and cavitation bubbles created by the thruster may make your EM 124 Multibeam Echo Sounder useless, almost no matter where the transducer is installed. When the bow thrusters are not in operation, the tunnel creates turbulence. If your vessel is pitching, the tunnel may be filled with air or aerated water in the upper position and release this in the lower position.
  • Page 25 Preparations Transducer Inclination angle Hull length at water line Maximum 1/3 of the hull length at water line (C) If the vessel hull has a bulbous bow, this may well be a good transducer location, but also in this case the flow pattern of the aerated water must be taken into consideration. The foremost part of the bulb is often a good location.
  • Page 26 Kongsberg EM 124 Installation Manual Important The transducer must not have a negative inclination angle compared to water flow. Do not place a transducer in the vicinity of protruding objects, and especially not close behind them. Make sure that the surface of the resulting installation is as smooth and streamlined as possible.

  • Page 27: Acoustic Noise

    Preparations Acoustic noise As with any other hydroacoustic systems, the quality of the EM 124 echo data and presentations are subject to unwanted acoustic noise. The echoes from any large and small target must be detected inside the noise. It is important that we keep the noise level as low as possible. The is necessary to obtain long range and dependable interpretations of the echoes.

  • Page 28: Self Noise

    Kongsberg EM 124 Installation Manual signal than noise. While SNR is commonly quoted for electrical signals, it can be applied to any form of signal [...]. http://en.wikipedia.org/wiki/Signal_to_noise_ratio (September 2013) The signal is the echo that we want to know something about, while the noise is any unwanted signals or disturbances.
  • Page 29 Preparations Machinery noise The main contributor to machinery noise is usually the main engine on board the vessel. The contribution from auxiliary machinery may, however, be considerable, especially if it is in poor shape. The machinery noise can be transmitted to the transducer as: •...
  • Page 30 Kongsberg EM 124 Installation Manual Flow noise The upper water layers of the sea contain a myriad of small air bubbles created by the breaking waves. When the hull moves through water it will cause a disturbance, and this will generate friction. The friction zone is called the flow boundary layer. The flow in this boundary layer may be laminar or turbulent.

  • Page 31: Ambient Noise

    Some means to reduce acoustic noise Several factors are contributing to the performance of the hydroacoustic equipment used on board a vessel. Careful planning of the EM 124 installation may reduce the acoustic noise. Unfortunately, it is impossible to simply provide a number of specific procedures to reduce the noise.
  • Page 32 Kongsberg EM 124 Installation Manual Note The information here must be considered as general advice. Each EM 124 installation must be handled separately depending on the hull design and the other electrical and mechanical systems installed on the vessel. Reducing flow noise •...
  • Page 33 • Make sure that all units are properly grounded, as this is important to avoid electrical noise. • Use shielded cables with correct grounding. • Separate EM 124 cables from other cables with high voltages, large currents or transients. • Place all high voltage power cables in metal conduits.

  • Page 34: Installing The Transducer

    Kongsberg EM 124 Installation Manual Installing the transducer Topics Transducer description, page 35 Transducer installation principles, page 37 Transducer installation summary, page 43 Manufacturing and installing the casings, page 46 Designing, manufacturing and mounting the steel conduits, page 48 Installing the RX mounting frame, page 52...

  • Page 35: Transducer Description

    Installing the transducer Transducer description The EM 124 uses separate transducer arrays for transmitting and receiving sound pulses. Both transducer arrays have several modules which are assembled in mounting frames. All TX modules are identical. Each TX module has one cable.
  • Page 36 Kongsberg EM 124 Installation Manual parallel to the vessel’s keel. The receiver transducer array should be aligned 90 degrees on the keel. Both transducer arrays should be horizontal on a plane on the keel. The transducer modules are assembled in the mounting frames especially designed for this purpose.

  • Page 37: Transducer Installation Principles

    Installing the transducer Transducer installation principles Topics Introduction, page 37 Gondola, page 39 Blister, page 40 Flush mounted, page 41 External mounted with fairings, page 41 Introduction The transducer can be installed using different installation principles. The EM multibeam system is supplied with transducers and electronic units. While the electronic units are installed using normal tools, the transducers must be located and installed depending on the vessel’s design.
  • Page 38 Kongsberg EM 124 Installation Manual EM 124 EM 304 EM 712 EM 2040 series Gondola Blister Flush mounted Externally mounted with fairings In a box keel Portable mounting Hull Unit Drop keel Normally, in a permanent installation, the cables enter the hull through tubes which are fitted with standard ship type cable glands (Brattberg, Roxtec or equivalent) to provide water tightness.

  • Page 39: Gondola

    A gondola is a streamlined pod mounted under the hull of the ship. It can either be welded or bolted under the hull plates. It is well suited for refitting a vessel with an EM 124 system. There is a gap between the gondola and the hull.

  • Page 40: Blister

    Blisters of different sizes and shapes have been used from the early days of echo sounder installation, and this method of installation is a well known principle. A blister is well suited for refitting a vessel with an EM 124 system. The blister can also be used for other sonar and echo sounder transducers.

  • Page 41: Flush Mounted

    Installing the transducer Flush mounted With the flush mount method the transducers are installed inside the ship's hull. This method exposes the transducers to passing air bubbles which might affect the system performance. The benefit of a flush mounted installation is that nothing protrudes from the keel.
  • Page 42 Kongsberg EM 124 Installation Manual Note The installation shipyard must provide all necessary installation drawings. If required, all drawings and documents must be approved by the vessel’s national registry and corresponding maritime authority and/or classification society. Such approval must be obtained before the installation can begin. The shipowner and shipyard doing the installation are responsible for obtaining and paying for such approval.

  • Page 43: Transducer Installation Summary

    The installation of the EM 124 transducer requires careful planning and preparations. It is a key task for successful use of the EM 124 Multibeam Echo Sounder. An overall installation procedure is provided.This procedure does not describe any detailed tasks.
  • Page 44 Kongsberg EM 124 Installation Manual Procedure Determine the physical location of the transducer. Note It is important to minimize the alongship gap between the receiver and tranceiver arrays to improve the performance at very shallow water (to get overlap between RX and TX footprints).
  • Page 45 Installing the transducer 10 Consider applying a thin layer of anti-fouling paint to the transducer face. Marine growth (biological fouling) on the transducer face reduces the EM 124 performance. We recommend that you paint the transducer face immediately after installation, and then again as often as required to maintain the protection.

  • Page 46: Manufacturing And Installing The Casings

    Kongsberg EM 124 Installation Manual Manufacturing and installing the casings The transducer mounting frames needs to be mounted into a solid base construction also called casing. The casings can be integrated in different kind of installation types like a gondola, blister or flush in the hull.
  • Page 47 Installing the transducer Procedure Manufacture the casings according the production drawings. Alter the drawings and the design as required to fit the vessel and the chosen installation principle. Install the casings under the hull in either the blister, the gondola or into the hull. 443140/A...

  • Page 48: Designing, Manufacturing And Mounting The Steel Conduits

    Kongsberg EM 124 Installation Manual Designing, manufacturing and mounting the steel conduits Steel conduits are used to protect the transducer cables. They should be filled with water up to the waterline. Prerequisites You must be equipped with a standard set of tools. This tool set must comprise the normal tools for mechanical tasks.
  • Page 49 Installing the transducer Note Make sure that there are no spatter, sharp edges or protruding objects that can damage the transducer cables. All necessary precautions must be made to avoid damage to the cables while pulling them through the steel conduit. If water leaks into the cable, the transducer module has to be replaced.
  • Page 50 Kongsberg EM 124 Installation Manual Vessel’s hull Ice and debris knife Casings for the transducer arrays frames and modules Support brackets inside the casing must not block for the transducer cables Water filled blister. With air outlet towards the hull...
  • Page 51 Installing the transducer Mount the steel conduits from the casings and up towards the sonar room where the transmitter and receiver units are located. The steel conduits are laid as required by the vessel structure and the location of the blister and sonar room.

  • Page 52: Installing The Rx Mounting Frame

    Kongsberg EM 124 Installation Manual Installing the RX mounting frame The mounting frames have been designed to offer a reliable and maintenance friendly installation method for the EM 124 Transducers. Prerequisites Note Engineers from Kongsberg Maritime must be present to install the transducer mounting frames.
  • Page 53 Installing the transducer • Baffle plate 1, drawing 365207 • Baffle plate 2, drawing 365208 • Baffle plate 3, drawing 365209 Procedure Mount the baffle plates to the mounting frames. Use moderate torque, and secure with Loctite 242. The number of baffle plates depends on the length of the array Note The baffle plates must be installed with correct orientation! There is a text and an arrow mark on every baffle plate to show the correct...
  • Page 54 Kongsberg EM 124 Installation Manual Related topics Transducer array flatness, page 133 Checking the transducer array flatness and correcting deviations, page 134 Dimensional survey accuracy requirements, page 155 Alignment specifications, page 157 Drawing file, page 158 443140/A...

  • Page 55: Installing The Tx Mounting Frames

    Installing the transducer Installing the TX mounting frames The mounting frames have been designed to offer a reliable and maintenance friendly installation method for the EM 124 Transducers. Prerequisites Note Engineers from Kongsberg Maritime must be present to install the transducer mounting frames.
  • Page 56 Kongsberg EM 124 Installation Manual Procedure If the TX mounting frame is for a 0.5 degree system, assemble the two parts. The 0.5 degree mounting frame is a two-part type, that has to be assembled before bolting onto the flat bars inside the casing.

  • Page 57: Installing The Rx Transducers Into The Mounting Frames

    Installing the transducer Installing the RX Transducers into the mounting frames When all the preparations have been made, the Transducers must be installed into the mounting frames. Prerequisites Note Engineers from Kongsberg Maritime must be present to supervise installation of the transducer modules.
  • Page 58 Pull out the transducer cable, and guide it out through the cable penetration in the baffle plate on the bottom side of the mounting frame. EM 124 transducer cables have a minimum bending radius of 78 mm. Note Ensure that minimum bending radius is not exceeded and that no damage is inflicted to the cables during the pull.
  • Page 59 Installing the transducer Check that the transducer cables pass through the casing in such a way that they are not exposed to wear and tear. Secure as required. Related topics Cable plan, Receiver Unit, 1 degree, page 99 Weight and outline dimensions, page 147 Drawing file, page 158 443140/A...

  • Page 60: Installing The Tx Transducers Into The Mounting Frames

    Kongsberg EM 124 Installation Manual Installing the TX Transducers into the mounting frames When all the preparations have been made, the Transducers must be installed into the mounting frames. Prerequisites Note Engineers from Kongsberg Maritime must be present to supervise installation of the transducer modules.
  • Page 61 Pull out the transducer cable, and guide it out through the side of the mounting frame. EM 124 transducer cables have a minimum bending radius of 78 mm. Note Ensure that minimum bending radius is not exceeded and that no damage is inflicted to the cables during the pull.
  • Page 62 Kongsberg EM 124 Installation Manual Repeat until all modules have been installed. Check that the transducer cables pass through the casing in such a way that they are not exposed to wear and tear. Secure as required. Related topics Cable plan, Transmitter Unit, page 91...

  • Page 63: Rules For Transducer Handling

    Cleaning and painting the transducer face During normal use, the transducer is subjected to biological fouling. If this marine growth is excessive, it will reduce the performance of the EM 124. The transducer has not been designed with any protection against biological fouling.
  • Page 64 Kongsberg EM 124 Installation Manual Observe the relevant instructions and safety information provided by the paint manufacturer. Rinse with fresh water For non permanent installations, the transducer should be rinsed with fresh water every time it is taken out of the water.

  • Page 65: Painting The Transducer Face

    Installing the transducer Painting the transducer face Marine growth (biological fouling) on the transducer face reduces the EM 124 performance. We recommend that you paint the transducer face immediately after installation, and then again as often as required to maintain the protection.
  • Page 66 Kongsberg EM 124 Installation Manual Abrade the transducer surface using a sanding paper with 240 inch grit size. Do not exceed a surface roughness (R ) of 35 microns as this can influence the EM 124 performance. Remove all dust.

  • Page 67: Approved Anti-Fouling Paints

    Installing the transducer Approved anti-fouling paints This is our list of approved antifouling paints for all transducer types. Always refer to the manufacturer's documentation and data sheets for a complete procedure and for relevant safety information. Important Do not paint the transducer with traditional hull plating paint. Use only the correct type of approved paint specified.
  • Page 68 Kongsberg EM 124 Installation Manual Products: • Intersleek 1100SR – : Intersleek 737 Primer Apply 50 µm dry film thickness. – : Intersleek 1100SR Paint Apply 150 µm dry film thickness. • Intersmooth 7465Si SPC – : Intergard 269 Primer Apply 40 µm dry film thickness.

  • Page 69: Installing The Em 124 Hardware Units

    Installing the EM 124 hardware units Installing the EM 124 hardware units Topics Transmitter Unit, page 70 Receiver Unit, page 74 Processing Unit, page 78 Installing the Hydrographic Work Station, page 83 443140/A...

  • Page 70: Transmitter Unit

    Kongsberg EM 124 Installation Manual Transmitter Unit Topics Installing the Transmitter Unit, page 71 RIO-P board - dip switch setting, page 73 443140/A...

  • Page 71: Installing The Transmitter Unit

    Installing the EM 124 hardware units Installing the Transmitter Unit The Transmitter Unit is normally located in a "sonar room" close to the transducer arrays. The physical length of the cables limit the distance between the transducers and the Transmitter Unit.
  • Page 72 Kongsberg EM 124 Installation Manual Mark the location of the holes for the upper and lower shock absorber on the bulkhead. Drill eight (8) 11-mm holes for each shock absorber. Note Always check on the other side of the bulkhead before drilling holes.

  • Page 73: Rio-P Board - Dip Switch Setting

    Installing the EM 124 hardware units RIO-P board - dip switch setting The dip switch setting on the RIO–P board has to be correct. Transmitter Unit 1 (MASTER): All switches must be set to ON. The position of the dip switches are shown with...

  • Page 74: Receiver Unit

    Kongsberg EM 124 Installation Manual Receiver Unit Topics Installing the Receiver Unit, page 75 Receiver Unit - dip switch setting, page 77 443140/A...

  • Page 75: Installing The Receiver Unit

    Installing the EM 124 hardware units Installing the Receiver Unit The EM 124 Receiver Unit is normally located in a "sonar room" close to the transducer arrays. The physical length of the cables limit the distance between the transducers and the Receiver Unit.
  • Page 76 Kongsberg EM 124 Installation Manual Drill three (3) 9-mm holes for each shock absorber. Note Always check on the other side of the bulkhead before drilling holes. Mount the cabinet to the bulkhead with six (6) M8 bolts. The bolts must be supplied by the shipyard. Bolts of grade A4-80 should be used.

  • Page 77: Receiver Unit - Dip Switch Setting

    Installing the EM 124 hardware units Receiver Unit - dip switch setting The dip switch setting in the Receiver Unit has to be correct. The software in the Processing Unit must know the identification of the Receiver Units. A switch on the processing board inside the Receiver Unit is used for this.

  • Page 78: Processing Unit

    Kongsberg EM 124 Installation Manual Processing Unit Topics Installing the Processing Unit, page 78 Processing Unit rear panel description, page 80 Processing Unit circuit boards and modules, page 81 CBMF board - dip switch setting, page 82 Installing the Processing Unit The Processing Unit is designed to be installed in a 19"...
  • Page 79 Installing the EM 124 hardware units Note In order to allow for future maintenance, we recommend to mount the unit with its cables and connectors available for easy access. Make sure that the chosen location meets the installation requirements. Mount the Processing Unit using four bolts through the front panel. The mounting bolts and nuts are supplied with the unit.

  • Page 80: Processing Unit Rear Panel Description

    Concurrent PP833 CPU board CBMF board There are one or two Compact Beamformer (CBMF) boards in the Processing Unit. The number of CBMF boards depend upon the configuration of the EM 124 system. CP219 Ethernet switch Air filter unit 443140/A...

  • Page 81: Processing Unit Circuit Boards And Modules

    The Processing Unit has two fan units for cooling purposes. • Power supply One power supply unit is used in the EM 124 Processing Unit for supply of 5, 24 and 48 VDC. The Excelsys XLB power supply is located inside the Processing Unit, and is not visible from the outside.

  • Page 82: Cbmf Board - Dip Switch Setting

    Kongsberg EM 124 Installation Manual CBMF board - dip switch setting The dip switch setting on the CBMF board has to be correct. All the dip switches on all the CBMF boards in the Processing Unit should be set to OFF.

  • Page 83: Installing The Hydrographic Work Station

    Installing the EM 124 hardware units Installing the Hydrographic Work Station Topics Installing the Hydrographic Work Station, page 83 Hydrographic Work Station rear connectors, page 86 Installing the Hydrographic Work Station The Hydrographic Work Station can be installed inside a console, inside a suitable cabinet, in a 19"...
  • Page 84 Kongsberg EM 124 Installation Manual Procedure Prepare the location and the necessary tools. Observe the installation requirements. Depending on its physical properties, install the computer inside a console, in a cabinet or 19” rack, or on a desk. Choose a position to fit the available cable lengths between the computer and the other units it connects to.
  • Page 85 Installing the EM 124 hardware units Mount the bottom plate using M6x20 bolts, washers and nuts. Place the computer on the bottom plate. Mount the two brackets to the bottom plate using M5 locking nuts and washers. If you are mounting the computer as a stand-alone desktop unit: Place the computer on the surface.

  • Page 86: Hydrographic Work Station Rear Connectors

    It is very important that high-quality Ethernet cables are used. You must use CAT-5E STP (Shielded Twisted Pair) quality or better. If you use cables with lower bandwidth capacity you will reduce the EM 124 performance. Display Port Display cable: From Hydrographic Work Station to display (C1) This is a commercial cable.
  • Page 87 Installing the EM 124 hardware units Computer cable: From Hydrographic Work Station to keyboard (C3) The cable is often physically attached to the keyboard, and terminated in the “computer end” with a male PS/2 or USB connector. Depending on the type of connector you must connect the keyboard to the PS/2 connector or an USB connector on the computer.

  • Page 88: Cable Layout And Interconnections

    Kongsberg EM 124 Installation Manual Cable layout and interconnections Correct cabling is essential for EM 124 operation. Cabling principles, cable plans and drawings, as well as relevant procedures, are provided. Topics Cable plans, page 89 List of EM 124 cables, page 105...

  • Page 89: Cable Plans

    Cable layout and interconnections Cable plans Topics Cable plan, Processing Unit, page 90 Cable plan, Transmitter Unit, page 91 Cable plan, Receiver Unit, 1 degree, page 99 Synchronization overview, 2 Transmitter Units 1 Receiver Unit, page 102 Remote on/off overview, 2 Transmitter Units 1 Receiver Unit, page 103 Hydrographic Work Station, page 104 443140/A...

  • Page 90: Cable Plan, Processing Unit

    Kongsberg EM 124 Installation Manual Cable plan, Processing Unit The Processing Unit cables include those used to connect the EM 124 Processing Unit to AC mains power, and to the transmitter and receiver units. One Ethernet cable is used to connect the Processing Unit to the Hydrographic Work Station.

  • Page 91: Cable Plan, Transmitter Unit

    Cable layout and interconnections Cable plan, Transmitter Unit The transmitter (TX) Unit cables include those used to connect the EM 124 TX Unit(s) to AC mains power, to the receiver (RX) Unit, to the Processing Unit and to the transducers. If there are more than one TX Unit they have to be connected to each other with a fibre optic cable.
  • Page 92 Kongsberg EM 124 Installation Manual Transmitter Unit 1 443140/A...
  • Page 93 Cable layout and interconnections Cables identified with an asterisk (*) are system cables. These cables are supplied with the EM 124 delivery. Transmitter Unit (TXU) 1 RIO-P board TX RIO board 1 TX RIO board 12 Transmit transducer (TX) number 1...
  • Page 94 Kongsberg EM 124 Installation Manual Transmitter Unit 2 443140/A...
  • Page 95 Cable layout and interconnections Cables identified with an asterisk (*) are system cables. These cables are supplied with the EM 124 delivery. Transmitter Unit (TXU) 2 RIO-P board TX RIO board 1 TX RIO board 12 Transmit transducer (TX) number 1...
  • Page 96 Kongsberg EM 124 Installation Manual Posi- Transducer serial Cable Soc- Size of system Unit tion number (fill in) board TX 1 TX 2 TX 3 TX 4 TX 5 TX 6 TX 7 TX 8 TX 9 TX 10 TX 11...
  • Page 97 Cable layout and interconnections Posi- Transducer serial Cable Soc- Size of system tion number (fill in) Unit board TX 37 TX 38 TX 39 TX 40 TX 41 TX 42 TX 43 TX 44 TX 45 TX 46 TX 47 TX 48 TX 49 TX 50...
  • Page 98 TX 82 TX 83 TX 84 TX 85 TX 86 TX 87 TX 88 TX 89 TX 90 TX 91 TX 92 TX 93 TX 94 TX 95 TX 96 Related topics List of EM 124 cables, page 105 443140/A...

  • Page 99: Cable Plan, Receiver Unit, 1 Degree

    Cable layout and interconnections Cable plan, Receiver Unit, 1 degree The receiver (RX) Unit cables include those used to connect the EM 124 RX Unit(s) to AC mains power, to the transmitter (TX) Unit, to the Processing Unit and to the transducers.
  • Page 100 Kongsberg EM 124 Installation Manual Receiver Unit (RXU) Socket RX 1 Socket RX 16 Receive transducer 1 Receive transducer 16 Receive transducer 5 to 14 connects to Socket RX 5 to RX 14 on Receiver Unit Cables identified with an asterisk (*) are system cables. These cables are supplied with the EM 124 delivery.
  • Page 101 RX 5 RX 6 RX 7 RX 8 RX 9 RX10 RX 10 RX11 RX 11 RX12 RX 12 RX13 RX 13 RX14 RX 14 RX15 RX 15 RX16 RX 16 Related topics List of EM 124 cables, page 105 443140/A...

  • Page 102: Synchronization Overview, 2 Transmitter Units 1 Receiver Unit

    Kongsberg EM 124 Installation Manual Synchronization overview, 2 Transmitter Units 1 Receiver Unit The transmitter and receiver unit(s) must be connected with a fibre optic synchronization signal. Transmitter Unit (TXU) 1 Transmitter Unit (TXU) 2 Receiver Unit (RXU) Cables identified with an asterisk (*) are system cables. These cables are supplied with the EM 124 delivery.

  • Page 103: Remote On/Off Overview, 2 Transmitter Units 1 Receiver Unit

    Cable layout and interconnections Remote on/off overview, 2 Transmitter Units 1 Receiver Unit The EM 124 system can be switched on/off via the Processin Unit. Processing Unit Transmitter Unit (TXU) 1 Transmitter Unit (TXU) 2 Receiver Unit (RXU) Cables identified with an asterisk (*) are system cables. These cables are supplied with the EM 124 delivery.

  • Page 104: Hydrographic Work Station

    Kongsberg EM 124 Installation Manual Hydrographic Work Station The topside/bridge cables include those used to connect the EM 124 Hydrographic Work Station and the display to each other, to AC mains power, and to external devices. Hydrographic Work Station Display The Hydrographic Work Station supports up to three displays.

  • Page 105: List Of Em 124 Cables

    Cable layout and interconnections List of EM 124 cables A set of cables is required to connect the EM 124 units to each other, and to the relevant power source(s). Type Cable From/To Minimum requirements Video cable From Hydrographic Work Station to display This is a commercial cable.
  • Page 106 Kongsberg EM 124 Installation Manual Cable Type From/To Minimum requirements Control cable From Processing Unit to remote control device Remote on/off switch If remote control is not used, a termination plug has to be inserted in the Remote control plug on the Processing Unit. This plug is a 9 pin D-SUB supplied with the Processing Unit.
  • Page 107 STP (Shielded Twisted Pair) quality or better. If you use cables with lower bandwidth capacity you will reduce the EM 124 performance. The EM 124 is often a part of a project delivery. For such deliveries, specific project cable drawings are established to show all the main cables, and how the various products...
  • Page 108 Kongsberg EM 124 Installation Manual are connected. In such project cable drawings, the EM 124 cables may be identified EM 124/Cx Related topics Cable plan, Processing Unit, page 90 Cable plan, Transmitter Unit, page 91 Cable plan, Receiver Unit, 1 degree, page 99...

  • Page 109: Clock Synchronization (1Pps)

    Cable layout and interconnections Clock synchronization (1PPS) The Processing Unit has a 1PPS (one pulse per second) input for clock synchronization. It can be selected in the operator software SIS wether the falling edge or the rising edge of the 1PPS signal is used by the Processing Unit to synchronize the internal clock. The 1PPS signal must be minimum 1 microsecond long.
  • Page 110 Kongsberg EM 124 Installation Manual Two examples are shown to clarify. • Using +4.5 V input signal the input current will be as required (~10 mA). No additional resistance required. • An added resistor of 750 Ω and minimum 0.1 W must be used.

  • Page 111: External Synchronization

    Cable layout and interconnections External synchronization The Processing Unit is has a connection for interface to an external synchronization system. This connection is used for interface to an external synchronization system (for example K-Sync) used when multiple echo sounders are employed on the same vessel. The external synchronization connector is located on the CBMF board in the processing unit.
  • Page 112 Kongsberg EM 124 Installation Manual External synchronization signal characteristics Signal Description Type Active Ready To Send - Output High from EM 124 when it Open collector output is ready for the next from isolation unit trigger pulse TRIG OUT Trigger out -...
  • Page 113 Cable layout and interconnections • Using +4.5 V input signal the input current will be as required (~10 mA). No additional resistance required. • An added resistor of 750 Ω and minimum 0.1 W must be used. Optically isolated output signals Processing Unit output circuitry External power Input to external system...

  • Page 114: Cable Drawings And Specifications

    Kongsberg EM 124 Installation Manual Cable drawings and specifications Topics RS-232 serial line using three wires and RJ45 connector, page 115 RS-422 serial line using five wires and RJ45 connector, page 116 Clock synchronisation (1PPS) using a coax cable, page 117...

  • Page 115: Rs-232 Serial Line Using Three Wires And Rj45 Connector

    Cable layout and interconnections RS-232 serial line using three wires and RJ45 connector An RS-232 serial line connection using three (3) wires is a common way to connect the EM 124 to external devices. Local connection RJ45 connector Connection on remote device...

  • Page 116: Rs-422 Serial Line Using Five Wires And Rj45 Connector

    RS-422 serial line using five wires and RJ45 connector An RS-422 serial line connection is a common way to connect the EM 124 to external devices. An RS-422 serial line connection can transmit data at rates as high as 10 million bits per second, and may be sent on cables as long as 1500 meters.

  • Page 117: Clock Synchronisation (1Pps) Using A Coax Cable

    Cable layout and interconnections Clock synchronisation (1PPS) using a coax cable The Processing Unit is equipped with a 1PPS signal input for clock synchronisation. Male BNC connector Ground 1PPS signal This cable must be provided by the installation shipyard. The 1PPS (one pulse per second) signal is normally provided by a positioning system.

  • Page 118: External Synchronisation

    Kongsberg EM 124 Installation Manual External synchronisation The Processing Unit (PU) is equipped with a connection for interface to an external synchronisation system. This connection is used for interface to an external synchronisation system (for example K-Sync) used when multiple echo sounders are employed on the same vessel. The external synchronisation connector is located on the CBMF board of the processing unit.

  • Page 119: Remote Control

    Cable layout and interconnections Remote control The Processing Unit can be switched on/off with a remote switch. This switch is connected to a 9–pin D-connector on the Processing Unit. Local connection, male 9–pin D-connector Connection to remote lamp and on/off switch Female 9–pin D-connector Male 9–pin D-connector Minimum cable requirements...

  • Page 120: Remote Control Using K-Rem

    Kongsberg EM 124 Installation Manual Remote Control using K-Rem The Processing Unit can be switched on/off with a remote switch. This switch is connected to a 9–pin D-connector on the Processing Unit. A dedicated junction box with on/off switches and light indication has been designed for this purpose (K-Rem).

  • Page 121: Dummy Plug For Not Using Remote Control

    Cable layout and interconnections Dummy plug for not using remote control The Processing Unit can be switched on/off with a remote switch. If remote control is not used, the enclosed remote control dummy plug has to be inserted in the Remote Control connector in the Processing Unit.

  • Page 122: Remote Control Of Transmitter Unit

    Kongsberg EM 124 Installation Manual Remote control of Transmitter Unit Cable for switching on/off the Transmitter Unit from the Processing Unit. This cable between the Transmitter Unit and the Processing Unit is required if you want to switch on and off the Transmitter Unit from the Processing Unit.
  • Page 123 Cable layout and interconnections Transmitter Unit end Pin layout male 9–pin D-connector. Connects to on the RIO-P board REMOTE ON/OFF IN at the bottom of the Transmitter Unit. Minimum cable requirements • : 2 x 0.5 mm² Conductors • : Overall braided Screen •...

  • Page 124: Remote Control Of Receiver Unit

    Kongsberg EM 124 Installation Manual Remote control of Receiver Unit Cable for switching on/off the Receiver Unit from the Processing Unit. This cable between the Transmitter Unit and the Receiver Unit is required if you want to switch on and off the Receiver Unit from the Processing Unit.
  • Page 125 Cable layout and interconnections Connects to at the bottom of the Receiver Unit. REMOTE ON/OFF IN Minimum cable requirements • : 2 x 0.5 mm² Conductors • : Overall braided Screen • : 60 V Voltage • : Defined by the plugs Maximum outer diameter 443140/A...

  • Page 126: Remote Control Overview

    The EM 124 system can be switched on/off with a central control switch. An EM 124 system has several hardware units, and to make it easier to switch on/off the system it is prepared for remote control. There are several methods to do this: •...
  • Page 127 Cable layout and interconnections Receiver Unit 2, connector marked REMOTE ON/OFF OUT Note The number of Transmitter Units and Receiver Units depends upon the chosen system configuration. The diagram shows the principle for a maximum possible solution, with two Transmitter Units and two Receiver Units.

  • Page 128: Transmit Transducer Cable

    Kongsberg EM 124 Installation Manual Transmit Transducer cable The transducer cables are moulded to the transducer modules and connect in the other end to the Transmitter Unit (TXU) with connectors. The standard length of the transducer cables is 25 metres.

  • Page 129: Receive Transducer Cable

    Cable layout and interconnections Receive Transducer cable The transducer cables are moulded to the transducer modules and connect in the other end to the Receiver Unit (RXU) with connectors. The standard length of the transducer cables is 25 metres. The length of the cables are fixed. The cables can not be extended or shortened during installation.

  • Page 130: Dimensional Surveying And Alignment

    Kongsberg EM 124 Installation Manual Dimensional surveying and alignment Topics About dimensional surveying and alignment, page 131 Dimensional surveying, page 131 Alignment, page 132 Transducer array flatness, page 133 Checking the transducer array flatness and correcting deviations, page 134 Calibration, page 135...

  • Page 131: About Dimensional Surveying And Alignment

    EM 124 prior to use. Modest accuracy requirements apply when your EM 124 system is only used to investigate objects in the water column.

  • Page 132: Alignment

    Related topics Dimensional survey accuracy requirements, page 155 Alignment To ensure a successful installation of the EM 124, all alignment and measurements must be done to the highest possible accuracy. The alignment tasks required for EM 124 include: • Measure and adjust the transducer frames to ensure that they have been mounted within the given tolerances.

  • Page 133: Transducer Array Flatness

    Dimensional surveying and alignment Transducer array flatness To avoid unwanted acoustic effects caused by misalignment of the transducer elements the transducer array must be installed with a flat surface. It may be most practical to perform these measurements on the transducer mounting frames before installation of the transducer modules.

  • Page 134: Checking The Transducer Array Flatness And Correcting Deviations

    Kongsberg EM 124 Installation Manual Checking the transducer array flatness and correcting deviations An overall procedure specifying the main tasks is provided. The detailed knowledge about how to do the measurements is offered by the consultants doing the work. Prerequisites In some occasions a flatness survey of the frame mounting foundations can be recommended.

  • Page 135: Calibration

    Dimensional survey accuracy requirements, page 155 Alignment specifications, page 157 Calibration During the sea trials, calibration surveys are required as described in the EM 124 end user documentation. In order to check and verify the performance of the EM 124 system, we strongly recommend that calibration surveys are done at regular intervals, or prior to any large survey.
  • Page 136 Kongsberg EM 124 Installation Manual In order to establish a system to measure the relative distance between sensors, a virtual coordinate system is established. This coordinate system uses three vectors; X, Y and Z. The X-axis is the longitudinal direction of the vessel, and in parallel with the deck.

  • Page 137: Technical Specifications

    Technical specifications Technical specifications Topics Performance specifications, page 138 Interface specifications, page 140 Weight and outline dimensions, page 147 Power requirements, page 150 Environmental requirements, page 152 Dimensional survey accuracy requirements, page 155 Alignment specifications, page 157 443140/A...

  • Page 138: Performance Specifications

    Kongsberg EM 124 Installation Manual Performance specifications These performance specifications summarize the main functional and operational characteristics of the EM 124 system. • Maximum ping rate: More than 5 Hz • Number of swaths per ping: 2 • Model Transmit...
  • Page 139 140°. The intensity level may be lowered by 10 or 20 dB by the operator. The EM 124 may be set in a mode to begin pinging with a flexible soft-start as a possible means of inducing marine mammals to leave the area of high intensity sound.

  • Page 140: Interface Specifications

    Kongsberg EM 124 Installation Manual Interface specifications Topics Datagram formats, page 141 Processing Unit, page 142 External sensors requirements, page 145 Hydrographic Work Station, page 146 443140/A...

  • Page 141: Datagram Formats

    • EM 712 Next generation multibeams will only have support for KMall format, and as such will require K-Controller and SIS5. This includes: • EM 124 • EM 304 • Any future EM multibeams The KM multibeam output datagram format is described in a Doxygen document, a documentation generator writing software reference documentation, and can be downloaded from the Kongsberg websites.

  • Page 142: Processing Unit

    Kongsberg EM 124 Installation Manual Processing Unit The EM 124 system will interface with peripheral systems and sensors using standard and/or proprietary datagram formats. This is a description of available datagram formats for EM multibeams using KMall format. Supported datagram formats for position information The EM 124 supports the following datagram format for position information.
  • Page 143 Sound speed probe can be interfaced directly to the Processing Unit and configured in K-Controller or interfaced to the Hydrograpic Work Station and configured in SIS 5. The EM 124 supports the following datagram format from a sound speed probe. •...
  • Page 144 Kongsberg EM 124 Installation Manual The KMall format is described in it’s own document. See the Product support A to Z page. 443140/A...

  • Page 145: External Sensors Requirements

    Technical specifications External sensors requirements The external sensors must fulfil these requirements to achieve the specified performance for the EM 124 system. Sensor accuracy The accuracy of the sensor data, as specified by the sensor manufacturer, must fulfill (preferably surpass) the following requirements •...

  • Page 146: Hydrographic Work Station

    Kongsberg EM 124 Installation Manual Hydrographic Work Station The EM 124 system will interface with peripheral systems and sensors using standard and/or proprietary datagram formats. This is a description of available datagram formats for EM multibeams using KMall format. Hydrographic Work Station •...

  • Page 147: Weight And Outline Dimensions

    Technical specifications Weight and outline dimensions These weights and outline dimension characteristics summarize the physical properties of the EM 124 system. Transmit transducer module • Outline dimensions – : 179 mm / 131.4 mm Length – : 760 mm Width –...
  • Page 148 Kongsberg EM 124 Installation Manual – : 177 mm Height Processing Unit • Outline dimensions – : 424mm Length – : 482.5 mm Width – : 88.6 mm Height • : 10.5 kg Weight Transmitter Unit • Outline dimensions –...
  • Page 149 Technical specifications Display • : Isic Manufacturer • http://www.isic-systems.com Manufacturer’s website • : MD24 (DuraMON WS 24) Model • Outline dimensions – : 68 mm Depth – : 601 mm Width – : 408 mm Height • : 10 kg (Approximately) Weight 443140/A...

  • Page 150: Power Requirements

    Kongsberg EM 124 Installation Manual Power requirements These power characteristics summarize the supply power requirements for the EM 124 system. TX Unit • : 230 VAC, 47 to 63 Hz Voltage requirement • : 15 % Maximum voltage deviation •...
  • Page 151 Technical specifications Display • : Isic Manufacturer • http://www.isic-systems.com Manufacturer’s website • : MD22/24/27 (DuraMON WS 22/24/27) Model • : Standard: 90–264 VAC, Optional: 18–36 VDC, 50–60 Hz Input voltage • : Max. 40 W Power consumption 443140/A...

  • Page 152: Environmental Requirements

    Kongsberg EM 124 Installation Manual Environmental requirements These specifications summarize the temperature requirements and other environmental standards for the EM 124 system. Transducers • : -5 to +50 °C Operational temperature • : -30 to +70 °C Storage temperature •...
  • Page 153 Technical specifications • : –30 to +70°C Storage temperature • : 5 to 93% relative non-condensing Relative humidity • : IP23 Ingress protection • Vibration – : 5 to 100 Hz Frequency range – : 0.7 g Excitation level • Shock –...
  • Page 154 Kongsberg EM 124 Installation Manual • Ingress protection (IP) rating – Front: IP65 – Rear: IP20 • Certificates – IEC 60945 – IACS E10 443140/A...

  • Page 155: Dimensional Survey Accuracy Requirements

    Technical specifications Dimensional survey accuracy requirements Minimum accuracy requirements are defined for the dimensional survey. Note The following accuracy requirements are minimum requirements. Higher accuracy will provide better results and should therefore always be aimed at. Transducer • : ± 0.05 m Position (x) •...
  • Page 156 Kongsberg EM 124 Installation Manual Heading sensor Note These spesifications are minimum requirements. Consult the installation manual for each sensor for how it is to be aligned and how accurately the location needs to be measured. • : ± 0.10 degrees...

  • Page 157: Alignment Specifications

    Technical specifications Alignment specifications These alignment specifications summarize the alignment requirements of the EM 124 system. Note The following accuracy requirements are minimum requirements. Higher accuracy will provide better results and should therefore always be aimed at. Transducer • Flatness –...

  • Page 158: Drawing File

    Kongsberg EM 124 Installation Manual Drawing file Drawing numbers referenced in this document This chapter contains drawings referenced in this manual. Drawing Description 834-213673 TX module, outline dimensions 834-213217 RX module, outline dimensions 372053 TX mounting frame assembly 0.5 degrees 860-213433 TX mounting frame assembly 1 degrees.
  • Page 159 Drawing file Drawing Description 378828 Hydrographic Work Station, outline dimensions 445723 HWS MPxxxx Rack mount kit 365290 MPxxxx with KM 1000 mounting kit 409067 Signal/Fiber Cable Kit 370275 Remote Control Unit (K-REM), outline dimensions 443140/A...
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