Kongsberg EM 712 Installation Manual

Multibeam echo sounder

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Kongsberg EM 712

Multibeam echo sounder

Installation manual

401027/B

Table of Contents

Summary of Contents for Kongsberg EM 712

Page 2 Kongsberg Maritime AS. The document, or any part of it, may not be translated to any other language without the written approval from Kongsberg Maritime AS.
Page 3: Table Of Contents
Transmitter Unit description...................13 Receiver Unit description ..................13 Processing Unit description..................14 Hydrographic Work Station description..............14 PREPARATIONS ..............15 Tools, equipment and consumables required for EM 712 installation......15 Personnel qualifications ....................16 Sonar room requirements....................17 Environmental requirements ..................17 Size and access requirements .................17 Requirements for insulation, heating and ventilation..........18...
Page 4 317812 EM 712 Casing w/mounting frame - 0.5 degrees ..........85 320320 EM 712 Casing w/mounting frame - 1 degree............86 375817 EM 712 Combined casing w/mounting frame - 1 degree ........87 331369 EM 712 Casing w/mounting frame - 2 degrees ..........88 396402 EM 712 Transmitter Unit dimensions..............89...
Page 5 Cable plan, Processing Unit .................107 Cable plan, Transmitter Unit ................108 Cable plan, Receiver Unit, 0.5 degree..............110 Topside cable plan ....................113 List of EM 712 cables ....................113 Transmit transducer cables..................... 119 Receive transducer cables ....................123 Clock synchronization (1PPS) ..................127 External synchronization ....................129...
Page 6 Kongsberg EM 712 Specifications for storage prior to installation or use.............171 Unpacking instructions ....................173 Unpacking standard parts and units..............173 Unpacking mechanical units ................174 Unpacking electronic and electromechanical units ..........175 Unpacking transducers ..................176 Specifications for storage after unpacking..............178 401027/B...
Page 7: About This Manual
You must follow the instructions given in this manual. If not it may affect the warranty. Kongsberg Maritime AS will accept no responsibility for any damage or injury to the system, vessel or personnel caused by equipment that has been incorrectly installed or maintained, or by drawings, instructions or procedures that have not been prepared by us.
Page 8: Kongsberg Em
The shipowner and shipyard doing the installation are responsible for obtaining and paying for such approval. The outline dimensions of the EM 712 units are found in the Drawing file chapter in this manual. Online information For information about the EM 712 and other products from Kongsberg Maritime, visit our website.
Page 9: Kongsberg Em 712
Kongsberg EM 712 Kongsberg EM 712 Topics System diagram 0.5 x 0.5 degrees system, page 10 System units, page 12 401027/B...
Page 10: System Diagram 0.5 X 0.5 Degrees System
Kongsberg EM 712 Installation manual System diagram 0.5 x 0.5 degrees system The system diagram identifies the main components of a basic EM 712 system. Only the main connections between the units are shown. Detailed interface capabilities and power cables are not shown.
Page 11 Kongsberg EM 712 Processing Unit interfaces: • Positioning systems • Attitude (roll, pitch and heave) • Velocity • Heading • Clock Processing Unit special interfaces: • Trigger input/output • Clock synchronization (1PPS) Transmitter Unit Receiver Unit Transmit transducer Receive transducer...
Page 12: System Units
Both transducer arrays can have one or more modules which are assembled in mounting frames. The EM 712 transducer modules are available in an ice reinforced version. For more information, contact Kongsberg Maritime. The two transducer arrays are normally mounted as “T” or “L” configurations under the vessel’s hull (Mills Cross configuration).
Page 13: Transmitter Unit Description
Kongsberg EM 712 Transmitter Unit description The EM 712 Transmitter Unit has all transmit electronics, like control processors, power amplifiers, power supply, capacitor battery and Ethernet interface. The Transmitter Unit is a wall-mounted steel cabinet with integrated shock and vibration absorbers, designed for bulkhead mounting.
Page 14: Processing Unit Description
Kongsberg EM 712 Installation manual Processing Unit description The EM 712 Processing Unit is provided to process the signals to and from the Transmitter and Receiver Units. The EM 712 Processing Unit is an industrial computer using both COTS (commercial off-the-shelf) components and custom made components.
Page 15: Preparations
Tools, equipment and consumables required for EM 712 installation In order to do the EM 712 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 16: Personnel Qualifications
Weight and outline dimensions, page 158 Personnel qualifications The installation of the EM 712 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 17: Sonar Room Requirements
The EM 712 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 712 units must not be exposed to excessive temperatures, moisture or humidity. Such conditions can cause corrosive attacks and subsequent failures to the electronic circuitry.
Page 18: 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 712 units that are installed in the room.
Page 19 A minimum number of additional electrical outlets must be provided for other equipment. Cabling requirements The sonar room units are connected to other EM 712 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 20: Where To Install The Transducer
Mount the transducer deep In order to achieve the best possible EM 712 performance, mount the transducer as deep as possible under the vessel’s hull. There are several reasons for this recommendation.
Page 21: Avoid Protruding Objects Near The Transducer
The effect of slamming can be reduced by mounting the transducer as deep as possible on the hull. Note Kongsberg Maritime AS takes no responsibility for any damages to the transducer, the cable or the mounting arrangement, caused by slamming. Avoid protruding objects near the transducer Objects protruding from the hull will generate turbulence and flow noise.
Page 22: Keep The Transducer Far Away From The Propellers
When in operation, the noise and cavitation bubbles created by the thruster may make your EM 712 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 23 Preparations Important The transducer must never be tilted backwards when the vessel is moving at normal speed. 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 24: Acoustic Noise
Kongsberg EM 712 Installation manual Acoustic noise As with any other hydroacoustic systems, the quality of the EM 712 echo data and presentations are subject to unwanted acoustic noise. The echoes from any large and small target must be detected inside the noise.
Page 25: Self Noise
Preparations 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 26 Kongsberg EM 712 Installation manual 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 27 Preparations 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 28: 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 712 installation may reduce the acoustic noise. Unfortunately, it is impossible to simply provide a number of specific procedures to reduce the noise.
Page 29 Preparations Note The information here must be considered as general advice. Each EM 712 installation must be handled separately depending on the hull design and the other electrical and mechanical systems installed on the vessel. Reducing flow noise • The shape of the transducer (or dome around it) must be as streamlined as possible.
Page 30 • Make sure that all units are properly grounded, as this is important to avoid electrical noise. • Use shielded cables with correct grounding. • Separate EM 712 cables from other cables with high voltages, large currents or transients. • Place all high voltage power cables in metal conduits.
Page 31: Installing The Transducer
Installing the transducer Installing the transducer Topics Transducer description, page 32 Transducer installation principles, page 34 Transducer installation summary, page 39 Manufacturing and installing the casings, page 42 Designing, manufacturing and mounting the steel conduits, page 44 Installing the mounting frames, page 47 Installing the transducers into the mounting frames, page 49 Rules for transducer handling, page 53 Painting the transducer face, page 54...
Page 32: Transducer Description
The standard length of the transducer cables are 15 metres. There is an option for cable length of 25 metres. The EM 712 transducer modules are available in an ice reinforced version. For more information, contact Kongsberg Maritime. The number of individual TX and RX modules in the two arrays depends on the chosen configuration.
Page 33 Installing the transducer It is possible to mount the transmit transducers with the cables pointing to the port or to the starboard side. The default orientation is to the starboard side, this should be used if possible. It is possible to mount the receive transducers with the cables pointing to the stern or to the bow.
Page 34: Transducer Installation Principles
External mounted with fairings, page 38 Introduction The EM 712 is supplied as a basic echo sounder with two relatively large transducers. While the electronic units are installed using normal tools, the transducer arrays must be located and installed depending on the vessel’s design. A number of different factors related to the vessel’s design must be taken into consideration during the installation...
Page 35 Once the installation method is defined, the installation shipyard must provide the necessary drawings. These drawings must be approved by the vessel’s classification authority. If required, Kongsberg Maritime AS can assist with the required engineering. 401027/B...
Page 36: Gondola
Kongsberg EM 712 Installation manual 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 712 system.
Page 37: 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 712 system. The blister can also be used for other sonar and echo sounder transducers.
Page 38: Flush Mounted
Kongsberg EM 712 Installation manual 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 39: Transducer Installation Summary
The installation of the EM 712 transducer requires careful planning and preparations. It is a key task for successful use of the EM 712 Multibeam echo sounder . An overall installation procedure is provided below. The procedure does not describe any detailed tasks, but refers to the relevant procedures in this chapter.
Page 40 Kongsberg EM 712 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 41 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 712 performance. We recommend that you paint the transducer face immediately after installation, and then again as often as required to maintain the protection.
Page 42: Manufacturing And Installing The Casings
Kongsberg EM 712 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 43 Installing the transducer Note Follow the general safety procedures. This units are heavy. 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. Related topics Designing, manufacturing and mounting the steel conduits, page 44 Drawing file, page 70...
Page 44: Designing, Manufacturing And Mounting The Steel Conduits
Kongsberg EM 712 Installation manual Designing, manufacturing and mounting the steel conduits Steel conduits are used to protect the transducer cables. Prerequisites You must be equipped with a standard set of tools. This tool set must comprise the normal tools for mechanical tasks. This includes different screwdriver types, pliers, adjustable spanners etc.
Page 45 Installing the transducer The steel conduit(s) should have an outer diameter of approximately 219 mm and an inner diameter of approximately 197.0 mm. • : 2 TX conduits, 2 RX conduits 0.5 x 0.5 degrees system • : 2 TX conduits, 1 RX conduit 0.5 x 1 degrees system •...
Page 46 • Close the top of the steel conduits with a cable sealing system. Kongsberg Maritimerecommends the use of sealing from Roxtec, Brattberg or similar. Related topics Manufacturing and installing the casings, page 42...
Page 47: Installing The Mounting Frames
Installing the transducer Installing the mounting frames The mounting frames have been designed to offer a reliable and maintenance friendly installation method for the EM 712 transducers. Prerequisites Before you can do this task, the following prerequisites must be met: •...
Page 48 Designing, manufacturing and mounting the steel conduits, page 44 Installing the transducers into the mounting frames, page 49 223137 EM 712 Transducer mounting frame - 0.5 degrees, page 79 223139 EM 712 Transducer mounting frame - 1 degree, page 81...
Page 49: Installing The Transducers Into The Mounting Frames
Prerequisites Note Engineers from Kongsberg Maritime must be present to install the transducer modules. Before you can do this task, the following prerequisites must be met: • The mounting frames has been installed. • The steel conduit is mounted with all installation work finalized.
Page 50 Kongsberg EM 712 Installation manual Casing Mounting frame Transducer face Transducer cable Clamping bars Cover plates Stay rods Caution Observe the physical size and weight of the transducer. Unless a suitable lifting device available, make sure that enough manpower is available to lift, hold and fasten the transducer.
Page 51 Installing the transducer Lift the transducer up into its location. Check the orientation according to the individual requirement. Pull out the transducer cable, and guide them out through the side of the mounting frame Place the transducer modules into the frames and fasten them the clamping bars to the stay rods.
Page 52 Installing the mounting frames, page 47 Transmit transducer cables, page 119 Receive transducer cables, page 123 216148 EM 712 Transducer TX1 dimensions, page 71 221048 EM 712 Transducer TX2 dimensions, page 73 219621 EM 712 Transducer RX1 dimensions, page 75...
Page 53: 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 712. The transducer has not been designed with any protection against biological fouling.
Page 54: Painting The Transducer Face
Painting the transducer face Marine growth (biological fouling) on the transducer face reduces the EM 712 performance. We recommend that you paint the transducer face immediately after installation, and then again as often as required to maintain the protection.
Page 55 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 712 performance. Remove all dust. Apply the primer, and let it dry.
Page 56: Approved Anti-Fouling Paints
Kongsberg EM 712 Installation manual 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 57 Installing the transducer Apply 40 µm dry film thickness. – : Intersmooth 7465Si SPC Paint Apply 100 µm dry film thickness. The list can also be found on http://www.km.kongsberg.com. 401027/B...
Page 58: Installing The Em 712 Hardware Units
Kongsberg EM 712 Installation manual Installing the EM 712 hardware units Topics Transmitter Unit, page 59 Receiver Unit, page 63 Processing Unit, page 68 401027/B...
Page 59: Transmitter Unit
Installing the EM 712 hardware units Transmitter Unit Topics Installing the Transmitter Unit, page 60 RIO-P board - dip switch setting, page 62 401027/B...
Page 60: Installing The Transmitter Unit
Kongsberg EM 712 Installation manual 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 61 • Alternatively, the shock absorbers can be mounted to a pair of specially designed support brackets. Related topics 396402 EM 712 Transmitter Unit dimensions, page 89 212984 EM 712 Transmitter Unit mounting bracket, page 90 Weight and outline dimensions, page 158 401027/B...
Page 62: Rio-P Board - Dip Switch Setting
Kongsberg EM 712 Installation manual RIO-P board - dip switch setting The dip switch setting on the RIO–P board has to be correct. All the dip switches on the RIO-P board in the Transmitter Unit should be set to ON. ON is when they are pushed towards the rear of the circuit board.
Page 63: Receiver Unit
Installing the EM 712 hardware units Receiver Unit Topics Installing the Receiver Unit, page 64 Receiver Unit - dip switch setting, page 66 401027/B...
Page 64: Installing The Receiver Unit
Kongsberg EM 712 Installation manual Installing the Receiver Unit The EM 712 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 65 The bolts must be supplied by the shipyard. Bolts of grade A4-80 should be used. The foundation onto which the cabinet is mounted will determine the correct torque to be applied to the bolts. Related topics 396428 EM 712 Receiver Unit dimensions, page 91 Weight and outline dimensions, page 158 401027/B...
Page 66: Receiver Unit - Dip Switch Setting
Kongsberg EM 712 Installation manual 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 67 Installing the EM 712 hardware units Receiver Unit 1: all switches must be set to OFF. Receiver Unit 1 is the one connected to channel 1-128. Receiver Unit 2: switch 1, 2 and 3 must be set to OFF, switch 4 must be set to ON.
Page 68: Processing Unit
Kongsberg EM 712 Installation manual Processing Unit Topics CBMF board - dip switch setting, page 69 401027/B...
Page 69: Cbmf Board - Dip Switch Setting
Installing the EM 712 hardware units 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 70: Drawing File
317812 EM 712 Casing w/mounting frame - 0.5 degrees, page 85 320320 EM 712 Casing w/mounting frame - 1 degree, page 86 375817 EM 712 Combined casing w/mounting frame - 1 degree, page 87 331369 EM 712 Casing w/mounting frame - 2 degrees, page 88...
Page 71: 216148 Em 712 Transducer Tx1 Dimensions
Drawing file 216148 EM 712 Transducer TX1 dimensions 401027/B...
Page 72 Kongsberg EM 712 Installation manual 401027/B...
Page 73: 221048 Em 712 Transducer Tx2 Dimensions
Drawing file 221048 EM 712 Transducer TX2 dimensions 401027/B...
Page 74 Kongsberg EM 712 Installation manual 401027/B...
Page 75: 219621 Em 712 Transducer Rx1 Dimensions
Drawing file 219621 EM 712 Transducer RX1 dimensions 401027/B...
Page 76 Kongsberg EM 712 Installation manual 401027/B...
Page 77: 216146 Em 712 Transducer Rx2 Dimensions
Drawing file 216146 EM 712 Transducer RX2 dimensions 401027/B...
Page 78 Kongsberg EM 712 Installation manual 401027/B...
Page 79: 223137 Em 712 Transducer Mounting Frame - 0.5 Degrees
Drawing file 223137 EM 712 Transducer mounting frame - 0.5 degrees 401027/B...
Page 80 Kongsberg EM 712 Installation manual 401027/B...
Page 81: 223139 Em 712 Transducer Mounting Frame - 1 Degree
Drawing file 223139 EM 712 Transducer mounting frame - 1 degree 401027/B...
Page 82 Kongsberg EM 712 Installation manual 401027/B...
Page 83: 223273 Em 712 Transducer Mounting Frame - 2 Degrees
Drawing file 223273 EM 712 Transducer mounting frame - 2 degrees 401027/B...
Page 84 Kongsberg EM 712 Installation manual 401027/B...
Page 85: 317812 Em 712 Casing W/Mounting Frame - 0.5 Degrees
Drawing file 317812 EM 712 Casing w/mounting frame - 0.5 degrees 401027/B...
Page 86: 320320 Em 712 Casing W/Mounting Frame - 1 Degree
Kongsberg EM 712 Installation manual 320320 EM 712 Casing w/mounting frame - 1 degree 401027/B...
Page 87: 375817 Em 712 Combined Casing W/Mounting Frame - 1 Degree
Drawing file 375817 EM 712 Combined casing w/mounting frame - 1 degree 401027/B...
Page 88: 331369 Em 712 Casing W/Mounting Frame - 2 Degrees
Kongsberg EM 712 Installation manual 331369 EM 712 Casing w/mounting frame - 2 degrees 401027/B...
Page 89: 396402 Em 712 Transmitter Unit Dimensions
Drawing file 396402 EM 712 Transmitter Unit dimensions 401027/B...
Page 90: 212984 Em 712 Transmitter Unit Mounting Bracket
Kongsberg EM 712 Installation manual 212984 EM 712 Transmitter Unit mounting bracket 401027/B...
Page 91: 396428 Em 712 Receiver Unit Dimensions
Drawing file 396428 EM 712 Receiver Unit dimensions 401027/B...
Page 92: 385422 Processing Unit Dimensions
Kongsberg EM 712 Installation manual 385422 Processing Unit dimensions 401027/B...
Page 93: 378828 Hydrographic Work Station Dimensions
Drawing file 378828 Hydrographic Work Station dimensions 401027/B...
Page 94 Kongsberg EM 712 Installation manual 401027/B...
Page 95: 371591 Rack Installation Kit Dimenisons
Drawing file 371591 Rack installation kit dimenisons 401027/B...
Page 96: 370275 Remote Control Unit (K-Rem) Dimensions
Kongsberg EM 712 Installation manual 370275 Remote Control Unit (K-REM) dimensions 401027/B...
Page 97 Drawing file 401027/B...
Page 98: 373962 Remote Control Unit (K-Rem) Wiring Diagram
Kongsberg EM 712 Installation manual 373962 Remote Control Unit (K-REM) wiring diagram 401027/B...
Page 99: Dimensional Surveying And Alignment
Dimensional surveying and alignment Dimensional surveying and alignment Topics About dimensional surveying and alignment, page 100 Dimensional surveying, page 100 Alignment, page 101 Calibration, page 102 Vessel coordinate system, page 102 401027/B...
Page 100: About Dimensional Surveying And Alignment
EM 712 prior to use. Modest accuracy requirements apply when your EM 712 system is only used to investigate objects in the water column.
Page 101: Alignment
Alignment To ensure a successful installation of the EM 712, all alignment and measurements must be done to the highest possible accuracy. The alignment tasks required for EM 712 include: •...
Page 102: Calibration
Kongsberg EM 712 Installation manual Calibration During the sea trials, calibration surveys are required as described in the EM 712 end user documentation. In order to check and verify the performance of the EM 712 system, we strongly recommend that calibration surveys are done at regular intervals, or prior to any large survey.
Page 103 Dimensional surveying and alignment 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 104: Cable Layout And Interconnections
Cable layout and interconnections Topics Read this first, page 105 Cable plans, page 106 List of EM 712 cables, page 113 Transmit transducer cables, page 119 Receive transducer cables, page 123 Clock synchronization (1PPS), page 127 External synchronization, page 129...
Page 105: Read This First
: These cables may be provided by Kongsberg Maritime as a part Commercial cables of the EM 712 delivery. They may also be included with third party items that are used with the EM 712. All electronic installations and corresponding wiring must be in accordance with the vessel's national registry and corresponding maritime authority and/or classification society.
Page 106: Cable Plans
Kongsberg EM 712 Installation manual Cable plans Topics Cable plan, Processing Unit, page 107 Cable plan, Transmitter Unit, page 108 Cable plan, Receiver Unit, 0.5 degree, page 110 Topside cable plan, page 113 401027/B...
Page 107: Cable Plan, Processing Unit
Cable layout and interconnections Cable plan, Processing Unit The Processing Unit cables include those used to connect the EM 712 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 108: Cable Plan, Transmitter Unit
Kongsberg EM 712 Installation manual Cable plan, Transmitter Unit The transmitter (TX) Unit cables include those used to connect the EM 712 TX Unit(s) to AC mains power, to the receiver (RX) Unit, to the Processing Unit and to the transducers.
Page 109 Transmit transducer (TX) number 2 Cables identified with an asterisk (*) are system cables. These cables are supplied with the EM 712 delivery. The illustration shows the TX transducer arrays mounted in the default orientation, with the cables pointing towards starboard.
Page 110: Cable Plan, Receiver Unit, 0.5 Degree
Kongsberg EM 712 Installation manual Cable plan, Receiver Unit, 0.5 degree The receiver (RX) Unit cables include those used to connect the EM 712 RX Unit(s) to AC mains power, to the transmitter (TX) Unit, to the Processing Unit and to the transducers.
Page 111 Receive transducer (RX) number 2 Cables identified with an asterisk (*) are system cables. These cables are supplied with the EM 712 delivery. The illustration shows the RX transducer arrays mounted in the default orientation, with the cables pointing towards stern.
Page 112 Kongsberg EM 712 Installation manual RX array identification RX2 TX Unit identification RX 3 RX 4 401027/B...
Page 113: Topside Cable Plan
EM 712 delivery. List of EM 712 cables A set of cables is required to connect the EM 712 units to each other, and to the relevant power source(s). The following cables are used when the EM 712 is set up.
Page 114 Kongsberg EM 712 Installation manual Cable Signal From/To Display cable From Hydrographic Work Station to display This is a commercial cable. It is normally provided with the display. Keyboard From Hydrographic Work Station to keyboard This is a commercial cable. It is normally provided with the keyboard.
Page 115 Cable layout and interconnections Cable Signal From/To Ethernet cable Processing Unit / Receiver Unit 1 See comment 7 Ethernet cable Processing Unit / Receiver Unit 2 See comment 7 Fiber Transmitter Unit 1 / Receiver Unit 1 See comment 8 Fiber Last Transmitter Unit / Receiver Unit 1 See comment 8...
Page 116 Kongsberg EM 712 Installation manual Cable Signal From/To TX1–9 Transducer TX Transducer 1 / Transmitter Unit See comment 11 TX1–10 Transducer TX Transducer 1 / Transmitter Unit See comment 11 TX2–1 Transducer TX Transducer 2 / Transmitter Unit See comment 11 TX2–2...
Page 117 Identifying EM 712 cables on a project cable drawing The EM 712 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 118 Kongsberg EM 712 Installation manual are connected. In such project cable drawings, the EM 712 cables are identified as EM 712/Cx 401027/B...
Page 119: Transmit Transducer Cables
Cable layout and interconnections Transmit transducer cables The cables between the EM 712 transmit transducer array and the Transmitter Unit are supplied by Kongsberg Maritime. The number of cables depends on the chosen system configuration. The cables are moulded to the transducers and connect to the Transmitter Unit with connectors.
Page 120 Kongsberg EM 712 Installation manual Default orientation of transducer modules, top view, 0.5 x 0.5 degrees system. Each transducer module is identified by its physical location in the array. If mounting is in accordance with the default orientation, the most aft...
Page 121 Cable layout and interconnections Optional orientation of transducer modules, top view, 0.5 x 0.5 degrees system. Each transducer module is identified by its physical location in the array. If optional orientation is used, the most forward module is transmit transducer number 1. The location of the transducer modules must be recorded during installation and written down in the cable...
Page 122 Kongsberg EM 712 Installation manual Connection of transmit transducer cables Note During the installation of the transducer array, you must fill in the cable identification table. The number of cables depends on the chosen system configuration. • 0.5 degrees transmit transducer: 20 cables •...
Page 123: Receive Transducer Cables
Cable layout and interconnections Receive transducer cables The cables between the EM 712 receive transducer array and the Receiver Unit are supplied by Kongsberg Maritime. The number of cables depends on the chosen system configuration. The cables are moulded to the transducers and connect to the Receiver Unit with connectors.
Page 124 Kongsberg EM 712 Installation manual Default orientation of transducer modules, top view, 0.5 x 0.5 degrees system. Each transducer module is identified by its physical location in the array. If mounting is in accordance with the default orientation, the port side module is receive transducer number 1.
Page 125 Cable layout and interconnections Optional orientation of transducer modules, top view, 0.5 x 0.5 degrees system. Each transducer module is identified by its physical location in the array. If optional orientation is used, the most starboard fide module is receive transducer number 1. The location of the transducer modules must be recorded during installation and written down in the cable...
Page 126 Kongsberg EM 712 Installation manual Connection of receive transducer cables Note During the installation of the transducer array, you must fill in the cable identification table. The number of cables depends on the chosen system configuration. • 0.5 degrees receive transducer: 8 cables •...
Page 127: 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 128 Kongsberg EM 712 Installation manual 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. 401027/B...
Page 129: External Synchronization
This is an optically isolated connection that requires ~10mA current. Input power and resistor value must be adjusted accordingly. The connector is RJ45 type. RJ45 connector pin layout Pin 3 and 6 is used by Kongsberg Maritime only. 401027/B...
Page 130 Kongsberg EM 712 Installation manual External synchronization signal characteristics Signal Description Type Active Ready To Send - Output High from EM 712 when it Open collector output is ready for the next from isolation unit trigger pulse TRIG OUT Trigger out -...
Page 131 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 132: Hydrographic Work Station Rear Connectors (Mp 5810)
It is very important that a high quality Ethernet cable is used. You must use CAT-5E STP (Shielded Twisted Pair) quality or better. Using a cable with lower bandwidth capacity will reduce the EM 712 performance. Display Port Display cable: From Hydrographic Work Station to display (C1) This is a commercial cable.
Page 133 Cable layout and interconnections Computer cable: From Hydrographic Work Station to mouse (or another similar device) (C4) The cable is often physically attached to the mouse, and terminated in the “computer end” with a male PS/2 or USB connector. Depending on the type of connector you must connect the mouse to the PS/2 connector or an USB connector on the computer.
Page 134: Cable Drawings And Specifications
Kongsberg EM 712 Installation manual Cable drawings and specifications Topics RS-232 serial line using three wires and RJ45 connector, page 135 RS-422 serial line using five wires and RJ45 connector, page 136 Adapter for D-connector to RJ45 connector for RS-422, page 137...
Page 135: 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 712 to external devices. Local connection RJ45 connector Connection on remote device...
Page 136: 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 712 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 137: Adapter For D-Connector To Rj45 Connector For Rs-422
Cable layout and interconnections Adapter for D-connector to RJ45 connector for RS-422 You can use an adapter if you need to connect a serial cable with a D-connector to the Processing Unit. The Processing Unit has four serial ports with RJ45 connectors. The ports can be configured to be RS-232 or RS-422.
Page 138: Clock Synchronisation (1Pps) Using A Coax Cable
Kongsberg EM 712 Installation manual 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.
Page 139: External Synchronisation
The connector is RJ45 type. Local connection The connector is RJ45 type. Note Pin 3 and 6 is used by Kongsberg Maritime only. Connection on remote device Unless otherwise specified, this cable must be provided by the installation shipyard.
Page 140: Remote Control Overview
There are several methods to do this: • Using a remote switch to turn on/off the entire system. The remote switch can either be the K-Rem Remote Control Unit ordered from Kongsberg Maritime or a switch and lamp provided by the installation shipyard.
Page 141 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. 401027/B...
Page 142: Remote Control
Kongsberg EM 712 Installation manual 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...
Page 143: Remote Control Using K-Rem
Cable layout and interconnections 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). Local connection, male 9–pin D-connector Connection at the terminal strip in Remote Control Unit (K-Rem )
Page 144: Dummy Plug For Not Using Remote Control
Kongsberg EM 712 Installation manual 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 145: Remote Control Of Transmitter Unit
Transmitter Unit from the Processing Unit. Processing Unit end, male 4–pin Lemo connector. Lemo part number: FGG.3B.304.CLAD62Z . Kongsberg Maritime part number: 348015 Transmitter Unit end, male 9–pin D-connector Processing Unit end Pin layout male 4–pin Lemo connector.
Page 146 Kongsberg EM 712 Installation manual 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 •...
Page 147: Remote Control Of Receiver Unit
Cable layout and interconnections 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. Transmitter Unit end, male 9–pin D-connector Connects to at the bottom of the Transmitter Unit.
Page 148 Kongsberg EM 712 Installation manual Transmitter Unit end Pin layout male 9–pin D-connector. Connects to on the RIO-P board REMOTE ON/OFF OUT at the bottom of the Transmitter Unit. 401027/B...
Page 149 Cable layout and interconnections Receiver Unit end Pin layout male 9–pin D-connector. Connects to at the Receiver Unit. REMOTE ON/OFF IN Minimum cable requirements • : 2 x 0.5 mm² Conductors • : Overall braided Screen • : 60 V Voltage 401027/B...
Page 150 Kongsberg EM 712 Installation manual • : Defined by the plugs Maximum outer diameter This cable must be provided by the installation shipyard. 401027/B...
Page 151: Technical Specifications
Technical specifications Technical specifications Topics Performance specifications, page 152 Interface specifications, page 154 Weight and outline dimensions, page 158 Power requirements, page 160 Environmental requirements, page 161 Alignment specifications, page 164 401027/B...
Page 152: Performance Specifications
Kongsberg EM 712 Installation manual Performance specifications These performance specifications summarize the main functional and operational characteristics of the EM 712 system. • Maximum ping rate: More than 30 Hz • Number of swaths per ping: 2 • Number of beams and soundings System version 0.5 x 0.5...
Page 153 3300 3150 3000 Estimated depth and coverage for EM 712, based on BS= -20dB, NL= 35 dB, f = 40 kHz Dual swath restrictions FM mode is used to extend the maximum range capability. Since the relative ping rate increases at large depths (caused by reduced angular coverage), the need for dual swath decreases with depth.
Page 154: Interface Specifications
Kongsberg EM 712 Installation manual Interface specifications The EM 712 system will interface with peripheral systems and sensors using standard and/or proprietary datagram formats. Processing Unit Supported datagram formats for position information The EM 712 supports the following datagram format for position information.
Page 155 Technical specifications The EM 712 supports the following datagram formats for depth information from an echo sounder. These datagram formats are received using a serial communication line. • NMEA DBS The NMEA DBS datagram provides the current depth from the surface. The datagram is no longer recommended for use in new designs.
Page 156 • 1 pulse per second (1PPS) clock synchronisation signal Doppler shifts All new generation of multibeam echo sounders from Kongsberg Maritime have an extended range performance by use of a frequency modulated transmitter pulse (FM), also called chirp pulse. In the FM mode, the Doppler shift made by the movements of the survey vessel relative to the bottom, causes a range error.
Page 157 Technical specifications • Heave (real-time output) 5 cm or 5% whichever is highest Hydrographic Work Station • Sound speed at transducer • Printer/plotter • Interface for input of sound speed profile (Ethernet or serial line) • Tide input (Ethernet or serial line) •...
Page 158: Weight And Outline Dimensions
Kongsberg EM 712 Installation manual Weight and outline dimensions These weights and outline dimension characteristics summarize the physical properties of the EM 712 system. Transmit transducer module – TX1 – 1 degree • Outline dimensions – : 970 mm Length –...
Page 159 • : 11 kg Weight Hydrographic Work Station : Hewlett Packard MP5810 Make and model The standard commercial computer has been configured to fit the operational requirements of the EM 712. • Outline dimensions – : 379 mm Depth –...
Page 160: Power Requirements
Kongsberg EM 712 Installation manual Power requirements These power characteristics summarize the supply power requirements for the EM 712 system. Note The use of an Uninterruptible Power Supply (UPS) is highly recommended. TX Unit • : 230 Vac/ 50 Hz Voltage requirement •...
Page 161: Environmental Requirements
Technical specifications Environmental requirements These specifications summarize the temperature requirements and other environmental standards for the EM 712 system. transducers • : -5 to +50 °C Operational temperature • : -30 to +70 °C Storage temperature • : 250 m...
Page 162 Kongsberg EM 712 Installation manual • : –30 to +70°C Storage temperature • : 5 to 93% relative non-condensing Relative humidity • : IP54 Ingress protection • Vibration – : 5 to 150 Hz Frequency range – : 1 g Excitation level •...
Page 163 Technical specifications • Certificates – IEC 60945 – IACS E10 401027/B...
Page 164: Alignment Specifications
Kongsberg EM 712 Installation manual Alignment specifications These alignment specifications summarize the alignment accuracy requirements of the EM 712 system. Note The following accuracy requirements are minimum requirements. Higher accuracy will provide better results and should therefore always be aimed at.
Page 165 Technical specifications Position sensor alignment accuracy • : ± 0.05 m Position (x) • : ± 0.05 m Position (y) • : ± 0.02 m Position (z) Waterline determination accuracy • : ± 0.02 m Position (z) 401027/B...
Page 166: Equipment Handling
Kongsberg EM 712 Installation manual Equipment handling Observe these basic rules for transportation, storage and handling of units. In this context, a unit may be any large or small part of the system. It can be supplied as part of the initial delivery, or as a spare part. The phrase box is used to describe all kinds of cases, wooden or cardboard boxes etc used to hold the unit.
Page 167: Transporting Kongsberg Maritime Equipment
In the absence of other information, no other boxes must be stacked on top of it. Handle all boxes and units with care. Note Due to the nature of Kongsberg Maritime’s products, and the extensive use of delicate electronic parts, all units and boxes must be regarded and handled as fragile equipment.
Page 168: Lifting Units And Transportation Boxes
Kongsberg EM 712 Installation manual Lifting units and transportation boxes Some of the boxes used to hold equipment units may be heavy. Use caution when lifting. Prerequisites Units and boxes may be heavy. Make sure that you have the necessary equipment required for lifting heavy items.
Page 169 Equipment handling Note Due to the nature of Kongsberg Maritime’s products, and the extensive use of delicate electronic parts, all units and boxes must be regarded and handled as fragile equipment. 401027/B...
Page 170: Inspection Of Units And Transportation Boxes After Arrival
Describe the damage, and collect photographic evidence if possible. Return the inspection report to Kongsberg Maritime as soon as possible. If units are not damaged, check the humidity absorbing material. If required, dry or replace the bags, then re-pack the unit(s) according to the packing instructions.
Page 171: Specifications For Storage Prior To Installation Or Use
Equipment handling Specifications for storage prior to installation or use When a system, a unit or a spare part has been delivered to the customer, it may be subject to long time storage prior to installation and use. General specifications During this storage period, certain specifications must be met.
Page 172 Kongsberg EM 712 Installation manual Caution Units containing lithium or alkaline batteries must be handled separately and with care. Such units are marked accordingly. Do not attempt to recharge such batteries, open them, or dispose of them by incineration. Refer to the applicable product data sheets or battery handling procedures for further details.
Page 173: Unpacking Instructions
If a unit has been damaged, prepare an inspection report stating the condition of the unit and actions taken. Describe the damage, and collect photographic evidence if possible. Return the inspection report to Kongsberg Maritime as soon as possible. 401027/B...
Page 174: Unpacking Mechanical Units
Kongsberg EM 712 Installation manual Place the box on a stable work bench or on the floor with the top of the box facing upwards. In the absence of other instructions, always open the top of the carton first. The contents of the box will normally have been lowered into the carton from above, so this will usually be the easiest route to follow.
Page 175: Unpacking Electronic And Electromechanical Units
Equipment handling Unpacking electronic and electromechanical units Prior to installation or use, electronic and electromechanical units must be unpacked from their transport boxes. It is important that this unpacking is done without inflicting damage to the equipment. Prerequisites Observe the procedure for unpacking of standard parts and units. Context Electronic and electromechanical units will normally be wrapped in a clear antistatic plastic bag.
Page 176: Unpacking Transducers
Kongsberg EM 712 Installation manual Unpacking transducers Prior to installation or use, transducers, sonar heads and hydrophones must be unpacked from their transport boxes. It is important that this unpacking is done without inflicting damage to the equipment. Prerequisites Observe the procedure for unpacking of standard parts and units.
Page 177 Equipment handling Observe the handling rules for transducers. 401027/B...
Page 178: Specifications For Storage After Unpacking
Do not break the seal to open a circuit board package before the board is to be used. If the board package is returned to Kongsberg Maritime with the seal broken, we will assumed that the unit has been used, and then you will be billed accordingly.
Page 179 Equipment handling Note Unless otherwise specified, transducers and hydrophones must not be stored in temperatures below −10°C and above +50°C. 401027/B...
Page 180 Kongsberg EM 712 Installation manual Index 19-inch rack installation kit International Marine Coatings ......56 outline dimensions........95 Jotun ............56 1PPS approved clock synchronisation ......... 138 anti-fouling paints ........56 connection ..........138 approved anti-fouling paints....... 56 International Marine Coatings ......56 Jotun ............
Page 181 Index installation ..........42 position information ........154 cavitation depth information acoustic noise........21–22, 26 datagram formats ........154 transducer ..........22 depth rating CBMF board transducer ..........161 configuration..........69 description dip switch setting ........69 ambient noise..........28 characteristics bow thruster noise ........
Page 182 Kongsberg EM 712 Installation manual Receiver Unit outline dimensions ..... 91 datagram formats ........154 remote control Processing Unit ...... 142 grounding requirements remote control Receiver Unit ......147 sonar room ..........18 remote control Transmitter Unit ..... 145 gyro information remote control using K-Rem ......
Page 183 Index transportation boxes ........170 units............170 machinery noise installation acoustic noise..........26 drawings............ 8 main engine instructions ..........7 acoustic noise..........26 Receiver Unit..........64 mains power requirements for installation personnel ....16 requirements ..........160 transducer into the mounting frame ....49 manual Transmitter Unit..........
Page 184 Kongsberg EM 712 Installation manual preparations transducer installation ........39 operating humidity principle Processing Unit ........161 installation flush mounted ......38 RX Unit ..........161 procedure TX Unit ..........161 designing, manufacturing and mounting the operating temperature steel conduit..........44 Processing Unit ........
Page 185 Index cable identification table ......126 weight ........... 159 cable marking .......... 123 Receiver Unit installation ..........64 brief description.......... 13 cable plan ..........110 dip switch setting ........66 environmental specifications ......161 self noise identification..........66 acoustic noise..........25 installation ..........
Page 186 Kongsberg EM 712 Installation manual RS-422 serial line cable....... 136 outline dimensions drawing ....71, 73, 75, 77 storage after unpacking ....... 178 preparing the installation........ 39 storage prior to installation ......171 slamming..........21 weight ........... 158 storage temperature........161 steel conduit unpacking ..........
Page 187 Index ventilation requirements sonar room ..........18 vessel coordinate system origin ............ 103 principles..........102 vibration RX Unit ..........161 TX Unit ..........161 visual inspection transportation boxes ........170 units............170 waterline alignment specifications ......165 website download documents ........8 weight display ...........

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