Kongsberg EM 122 Installation Manual
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Kongsberg EM 122 Installation Manual

Kongsberg EM 122 Installation Manual

Multibeam echo sounder
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Summary of Contents for Kongsberg EM 122

  • Page 1 Installation Manual EM 122 Multibeam echo sounder...
  • Page 3 This manual provides you with the basic information required to install the EM 122 Multibeam echo sounder system. For more detailed information about the practical use of the product, refer to the EM 122 Multibeam echo sounder Operator manual. 317669/B June 2013 ©...
  • Page 4 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 5: Table Of Contents

    Installation Manual Table of contents ABOUT THIS MANUAL ............7 EM 122................8 Brief system description ...................8 Transducer arrays..................8 Transceiver Unit – TRU ................9 Preamplifier Unit ..................9 TX Junction Box(es) ..................9 Operator Station ..................10 Scope of supply ......................13 Supply conditions ....................14...
  • Page 6 EM 122 Transducer modules....................32 Logistics and references ................32 Procedure ....................32 INSTALLATION EXAMPLES ..........34 Transducer blister ....................34 Logistics and references ................34 Procedure ....................35 Gondola ........................36 Logistics and references ................36 Flush mount ......................37 Fairing ........................38 Protective acoustic window..................38 Description of a acoustic window..............
  • Page 7 Installation Manual Power requirements ....................61 Environmental and EMC specifications ..............62 CABLE LAYOUT AND INTERCONNECTIONS ...... 64 System cabling .......................64 Operator Station cables ..................66 Transceiver Unit cables ..................68 Transceiver Unit sub-racks – front view ............70 Transceiver unit sub-racks – rear view............72 Power and control cables between sub-racks - rear view ........
  • Page 8 EM 122 Operational voltage................... 107 Final installation checks ..................108 DRAWING FILE ............. 109 System drawings....................109 RX Module ....................110 TX module ....................111 TX array mounting frame assembly 0.5 degree ........... 112 TX array mounting frame assembly 1 degree ..........113 TX array ....................

  • Page 9: About This Manual

    The purpose of this manual The purpose of this installation manual is to provide the descriptions and procedures required to install the Kongsberg EM 122 Multibeam echo sounder system units, and to perform the necessary cabling between the individual system units, and between the system and peripheral systems, sensors and devices.

  • Page 10: Brief System Description

    EM 122 EM 122 The purpose of this chapter is to provide an overall description of the EM 122 Multibeam echo sounder system and its main features. Topics • Brief system description on page 8 • Scope of supply on page 13 •...

  • Page 11: Transceiver Unit - Tru

    Transceiver Unit on page 43 Preamplifier Unit The EM 122 Preamplifier Unit is a wall-mounted steel cabinet with integrated shock and vibration absorbers. This unit amplifies and band pass filters the Receive signals from the RX transducer array. It is installed near the Transceiver unit in the “sonar room”.

  • Page 12: Operator Station

    EM 122 Operator Station The Operator Station will consist of a desktop computer, an LCD monitor, a mouse and a keyboard. Additional peripherals may be included. An optional kit for mounting the computer in a 19” rack is available. 317669/B...
  • Page 13 EM 122 Figure 1 System diagram 317669/B...
  • Page 14 EM 122 Figure 2 System diagram 0.5 degree TX Interfaces: Sound Speed Sensor Tide Center depth output Ethernet and serial lines (data i/o) POWER Operator Station Internal Ethernet Ethernet Interfaces: Positioning systems Attitude (roll, pitch and heave) Heading Clock Trigger input/output...

  • Page 15: Scope Of Supply

    EM 122 Scope of supply Units The EM 122 Multibeam echo sounder delivery comprises the following items • EM 122 Operator Station – HWS work station with display, mouse, keyboard, hard disk and DVD recorder • EM 122 Transceiver Unit •...

  • Page 16: Supply Conditions

    Before any installation work by Kongsberg Maritime AS can begin, all cables (at least those which are in any way connected with the system) must be run and connected to their respective terminations.

  • Page 17: Installation, Supervision And Commissioning

    Note Any damage incurred during the installation period, even with a Kongsberg Maritime AS representative present, is the installation shipyard’s responsibility unless it can be proven that the damage was due to production or material defects in the equipment delivered by Kongsberg Maritime AS, or irresponsibility by Kongsberg Maritime AS personnel.

  • Page 18: Installation Requirements

    Environmental requirements Vibrations The EM 122 Transceiver Unit and Preamplifier Unit are fitted with shock and vibration damping mounts. If the vibration velocity amplitude at the base of the installed equipment is expected to exceed 1g in the range 5–50 Hz, constantly during operational life, special precautions...

  • Page 19: Wiring

    EM 122 Wiring All cables between the bridge, the various operation- and equipment rooms, must be supported and protected along their entire length using conduits or cable trays. Note that the cables must not be installed in the vicinity of high-power supplies and cables, antenna cables or other possible sources of interference.

  • Page 20: Transducer Arrays

    EM 122 Transducer arrays This chapter describes the installation of the EM 122 Transmit (TX) and Receive (RX) Transducer Arrays. Drawings showing the installation principles and the physical dimensions are included in the text. Other drawings are included in the Drawing File.

  • Page 21: Installation Philosophy

    Transducer arrays Installation philosophy The EM 122 system 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 ship’s hull must be taken into consideration during the...

  • Page 22: Locating The Transducer Array

    Propeller noise The propulsion propeller is the dominant noise source on most vessel types. The noise is transmitted through the sea water, and may in extreme cases reduce the maximum range capability of the EM 122. 317669/B...

  • Page 23: Noise From Protruding Objects On The Hull

    Transducer arrays Figure 3 Sketch of boundary layer underneath the vessel The transducer arrays should therefore be placed far away from the propeller, which means on the forward part of the hull. Positions outside the direct line of sight from the propeller are favourable.
  • Page 24 EM 122 Figure 4 Recommended location of the transducer array on the hull The possibility of getting air bubbles in front of the transducer array is the most important factor. Figure 5 Transducer array located on a bulbous bow If a nominal horizontal mounting of the transducer array is desired, the transducers can be mounted parallel to the keel.

  • Page 25: Installation Steps

    Transducer arrays Installation steps The following steps must be taken to install the EM 122 transducer arrays Determine the physical location of the transducer arrays under the vessel’s hull. • This is briefly explained in the previous chapter. Note It is important to minimize the alongship gap between the RX and the TX arrays to improve the performance at very shallow water (to get overlap between RX and TX footprints).
  • Page 26 EM 122 Figure 6 EM 122 Gondola (example) (Cd021 107) 317669/B...
  • Page 27 Transducer arrays Figure 7 EM 122 blister and steel pipe arrangements (example) 317669/B...

  • Page 28: Steel Conduits

    The installation of the steel conduits must be properly planned, and all plans and drawings must be approved by the vessel’s classification authority. For the principles, see EM 122 blister and steel pipe arrangements (example) on page 25 The steel conduits must be designed to fit each individual vessel. They are not included with the system delivery.
  • Page 29 If the openings of these conduits are under the water level, then special acceptances are needed from the classification. Close the top of the steel conduits with a seal. • Kongsberg Maritime recommends the use of sealing from Roxtec, Bratberg or similar. 317669/B...

  • Page 30: Casings

    EM 122 Casings While the transducer elements are mounted into the frames, the frames require casings. One casing is required for each frame. The casings are not a part of the system delivery. They must therefore both be provided (or manufactured) and installed by the installation shipyard.

  • Page 31: Logistics And References

    Transducer arrays The mounting frames are installed into the casings prepared by the installation shipyard or directly into another mounting area. Casings on page 28 The installation must be carried out according to arrangement drawings designed for the specific vessel. Refer to the drawings included in the Drawing File, and the applicable drawings prepared by the installation shipyard.
  • Page 32 EM 122 Note Dismount the Mounting Frame and transport it to a locksmith shop and use a milling machine. Transfer the hole-pattern according to the drawing. Drill and cut the thread. Mounting frame to be checked with all baffle plates before re-installing.
  • Page 33 Transducer arrays The frame must be bolted properly to the bars with torque approximately 187 Nm. Check that the frame is mounted completely flat. • No point on the frame may deviate from the horizontal plane with more than ± 0.5 mm.

  • Page 34: Transducer Modules

    • on page Note Note that engineers from Kongsberg Maritime must be present during the installation of the transducer modules. Procedure How to install the RX and TX transducer array modules Observe normal safety precautions for dockyard work.
  • Page 35 Transducer arrays For the mounting of TX array in the frames, there are no orientation limits. However, for the RX array there are some limitations. RX array with casing – 2 degree on page 117 RX transducer modules Note When installing RX transducer modules, fill in the “Location of RX modules“ table! on page Put the first transducer module into the frame.

  • Page 36: Installation Examples

    This is a well proven way, when refitting a vessel with a EM 122 system. A blister is a mounting construction fully welded to the hull of the ship. I contains casings or boxes, which form the mail part of the unit, housing the transducer frames and modules.

  • Page 37: Procedure

    Installation examples Special tools - Welding equipment Protection - Protective paint, zinc anodes References - Refer to the following drawings in the Drawing file Procedure How to mount the transducer blister Design and manufacture the transducer blister. • The blister must hold the two casings; one for the TX and one for the RX transducer arrays.

  • Page 38: Gondola

    The gondola can be tailored to fit the ship and also the scope of supply. Kongsberg Maritime have been involved in all sizes of gondolas, from the smallest wit only an EM 710 system to the largest one housing all transducers in an integrated acoustic outfit.

  • Page 39: Flush Mount

    Installation examples Figure 9 Gondola – 1 x 2 degree system Flush mount For a flush installation method, the transducers are installed inside the ship’s hull. The transducer faces are then levelled with the surface of the hull. This method exposes the transducers to passing air bubbles which might affect the system performance.

  • Page 40: Fairing

    EM 710, acoustic windows will be too lossy, thus specially made ice strengthened transducers will be the solution. An EM 122 multibeam system can be installed on ice going ships, from ice rand ships with the lightest ice class to a full ice breaker classified vessel.
  • Page 41 Installation examples The construction is a metal frame of 6 beams which are molded in a plastic to allow the sound energy pass through and out into the water. Each beam has a hole in each end to allow bolting to the transducer casing. The mounting is with the beams sitting athwart ship and thus 90 degrees to the transducer length.
  • Page 42 EM 122 B – Plastic TX protection window 317669/B...

  • Page 43: System Units

    System units System units This chapter describes the installation of the EM 122 Transceiver Unit in the equipment or operation room, and the Operator Station in the operation room. The Remote Control Junction Box installation for a 0.5 degree system is also described.
  • Page 44 EM 122 Installation No specific installation procedures exist for the Operator Station. However, you must install the units so that they are properly physically supported and protected for shock and vibration due to sea conditions. 317669/B...

  • Page 45: Transceiver Unit

    Location The EM 122 Transceiver Unit is normally installed in the vessel’s “sonar room” close to the transducer arrays. This room must be dry and free from excessive dust and vibration. Maximum humidity of 80% is recommended. Good ventilation for the equipment cooling must be provided.
  • Page 46 EM 122 Figure 10 EM 122 Transceiver unit mounting 317669/B...

  • Page 47: General Information

    System units Figure 11 Transceiver unit seen from above. General information The Transceiver Unit cabinet has access to all the circuit boards on both the front and rear side. 317669/B...

  • Page 48: Logistics

    Note The maximum distance between the EM 122 Transceiver Unit and the TX and RX Transducer Arrays is restricted by the length of TX Junction Box(es) and Preamplifier transducer cables. (5 m) Logistics •...

  • Page 49: Surface Preservation

    • Logistics on page 48 • Procedures on page 49 Scope This chapter presents the general installation procedures for the Kongsberg Maritime EM 122 Preamplifier Unit. Note The guidelines for installation presented here must be regarded as a base for detailed vessel specific plans prepared by the installation shipyard.

  • Page 50: Location

    EM 122 Location The EM 122 Preamplifier Unit is normally installed in the vessel’s “sonar room” close to the transducer arrays. This room must be dry and free from excessive dust and vibration. Maximum humidity of 80% is recommended. Good ventilation for the equipment cooling must be provided.

  • Page 51: Procedures

    System units Procedures How to mount the Preamplifier Unit cabinet Caution Always check on the other side of the bulkhead before drilling holes! Mark the location of the holes for the first shock absorber on the bulkhead. Drill 11– mm holes, eight (8) for each shock absorber Mount the complete unit on the bulkhead.
  • Page 52 EM 122 Figure 13 Rear view 317669/B...
  • Page 53 System units How to mount the Receiver cables underneath the cabinet Prepare the support bracket to receive the receiver cables underneath the cabinet. Mount the cables according to the cable plan. Close and secure cable bracket to secure the cables. Figure 14 Underneath view of the cabinet Surface preservation All exposed metal surfaces which are likely to corrode should be painted according to the...
  • Page 54 EM 122 Figure 15 Preamplifier Unit mounting 317669/B...

  • Page 55: Tx Junction Box(Es)

    System units Figure 16 Preamplifier Unit seen from above TX Junction Box(es) This section presents the general installation procedure for the EM 122 Junction Box(es). 317669/B...

  • Page 56: Location

    Location The EM 122 Junction Boxes (2 pcs) are normally installed in the vessel’s “sonar room” close to the Transceiver Unit. This room must be dry and free from excessive dust and vibration. Maximum humidity of 80% is recommended. Good ventilation for the equipment cooling must be provided.

  • Page 57: Surface Preservation

    System units Close and secure cable bracket to secure the cables. Secure the interface cables by strapping them to the transducer cables. Surface preservation All exposed metal surfaces which are likely to corrode should be painted according to the appropriate preservation scheme. This includes welds, base frames and support brackets. Make appropriate cautions to avoid spilling of paint on the cabinet.

  • Page 58: Remote Control Junction Box

    EM 122 Remote Control Junction Box This chapter presents the general installation procedures for the EM 122 Remote Control Junction Box. Scope A dedicated Junction Box has been designed to provide: • Remote controlled system on/off with light indication • System trigger output and input These functions are all available through the Remote connector on the EM 122 Transceiver Unit.

  • Page 59: Procedures

    System units Procedures How to mount the remote control junction box cabinet Mark the location of the holes for the cabinet. • The size and location of these holes are shown on the outline drawings. Drill the four 8.5–mm holes in the bulkhead Caution Always check on the other side of the bulkhead before drilling holes! Mount the cabinet.
  • Page 60 EM 122 Figure 18 Remote Control Junction Box – outline dimensions 317669/B...

  • Page 61: Technical Specifications

    Technical specifications Technical specifications This chapter presents the main technical specifications. Note Kongsberg Maritime AS is engaged in continuous development of its products and reserves the right to alter specifications without prior notice. Topics • Interfaces on page 59 • Physical specifications on page 60 •...

  • Page 62: Physical Specifications

    EM 122 • Ethernet interface for velocity input needed for Doppler compensation in chirp mode. • Gigabit and Megabit Ethernet interface for input of sound speed profile, tide and echo sounder depths, and output of all data normally logged to disk Physical specifications Transmit transducer module –...

  • Page 63: Power Requirements

    Technical specifications Transducer ice window • TX – Weight in air/water: 200 kg / 55 kg • RX – Weight in air/water: 530 kg / 412 kg (1 degree) • RX – Weight in air/water: 310 kg / 241 kg (2 degree) Transceiver Unit •...

  • Page 64: Environmental And Emc Specifications

    EM 122 Acceptable transients • Short time (max. 2 sec) : ± 20%, 42 – 69 Hz • Spikes (max. 50µs) : < 1000 V Transceiver Unit: • 0.5° x 1°: < 2000W • 1° x 1°: < 2000W • 1° x 2°: < 1900W •...
  • Page 65 Technical specifications Environment • Operating temperature, sonar room: 0 to 50º C • Operating temperature, operating room: +5 to 50º C • Storage temperature: –30 to +70º C • Humidity: 5 to 95% relative non-condensing Humidity requirements will depend on customer requirements. Normal specification is up to 80% non-condensing.

  • Page 66: Cable Layout And Interconnections

    • Transducer cables on page 87 • Cable drawings on page 131 The standard cables used between the EM 122 system units and between the units and their external devices are shown here. For larger installations where the EM 122 is a subsystem, the cables will also be shown in the cable layout plan and interconnection diagram specific for the vessel into which the system is installed.
  • Page 67 • Number of cores • Recommended cable type • Minimum cable specifications The necessary considerations must be taken to suit special requirements. Kongsberg Maritime accepts no responsibility for damage to the system or reduced operational performance if this is caused by improper cabling.

  • Page 68: Operator Station Cables

    EM 122 Operator Station cables The illustration and the list below specifies each cable used on the EM 122 Operator Station. References are made to detailed cable drawings. Note that this information includes several cables that may not be in use on all installations.
  • Page 69 Cable layout and interconnections C7 - Ship’s Ethernet The Operator Station is equipped with two Ethernet ports interface boards, one is used to communicate with the ship’s Ethernet while the other (C17) is used to communicate with the Transceiver Unit. The Ethernet cables must be provided by the installation shipyard.

  • Page 70: Transceiver Unit Cables

    EM 122 Transceiver Unit cables The illustration specifies each cable used on the EM 122 Transceiver Unit. References are made to detailed cable drawings. Note that this information includes several cables that may not be in use on all installations.
  • Page 71 Cable layout and interconnections C17 - Transceiver Unit RJ-45 interface Refer to the Operator Station cabling. C19 - Synchronisation An external system may be used to synchronise the echo sounder’s transmissions. This system is connected to the Remote plug on the Transceiver Unit. In most cases, an external junction box is located in the vicinity of the Operator Station to facilitate on/off control.

  • Page 72: Transceiver Unit Sub-Racks - Front View

    EM 122 Transducer cables The transducer cables are supplied by the manufacturer. Note that the number of transducer cables depend on the chosen system resolution. Transceiver Unit sub-racks – front view The cabling at the front of the TRU is installed at the factory.
  • Page 73 Cable layout and interconnections Figure 21 Transceiver Unit sub-racks, front view cPCI Power BSP 67B Ethernet PSU 6V power Rx32 receiver CPU Board BSP 67 B BSP 67 B Power Good Fault Input ok Cometh 3200b TX 36 TX 36 TX 36 TX 36 TX 36...

  • Page 74: Transceiver Unit Sub-Racks - Rear View

    EM 122 Transceiver unit sub-racks – rear view Figure 22 Transceiver Unit sub-racks, rear view RX RIO RXP RIO BSP RIO RIO Concurrent Raw Data logger Ethernet RIO TXP POWER TX RIO TXP RIO HVP RIO 306397 BSP RIO Remote...
  • Page 75 Cable layout and interconnections RX RIO – Rear Interface Board Figure 23 RX RIO External connections • C54 - Preamplifier interconnection cables This is a RX transducer cable terminated in a 50-pin D-sub connector. Each RX RIO board connects to the Preamplifier Unit. 317669/B...

  • Page 76: 4 317669/B

    EM 122 RXP RIO – Rear Interface Board Figure 24 RXP RIO External connections • C55 – AC power AC power Power On/off, normally set to on Switch – 115/230 V for the fan unit This is a 115/230 Vac AC mains cable. Cable C55 is equipped with a 3-pin IEC female socket.
  • Page 77 Cable layout and interconnections BSP RIO – Rear Interface Board Figure 25 BSP RIO External connections • C57 - 1PPS from external sensor This is a standard coaxial cable with a BNC plug. It is used to provide a 1PPS timing signal.
  • Page 78 • C68 - VGA This cable is equipped with a standard 15-pin D-sub connector. This interface is only used for system testing by Kongsberg Maritime personnel. • C69 / C70 - Serial lines 5 and 6, not used. These cables are equipped with standard 9-pin D-sub connectors.
  • Page 79 • C65 - USB The USB ports are equipped with two standard USB2 connectors and it is only used for system testing by Kongsberg Maritime personnel. • C66 / C67 - Ethernet, RJ45 – C66 – Ethernet 1 to operator station.
  • Page 80 EM 122 Raw data logger interface (RDL) Purpose and description This is a Gigabit Ethernet output for a raw data logger option. This “unit” is connected internally to the TRU GBit switch board. Figure 28 RDL board External connections • C85 - Ethernet Ethernet cable to an optional Raw data logger.
  • Page 81 Cable layout and interconnections TX RIO – Rear Interface Board Figure 29 TX RIO External connections • C74 / C75 - TX transducer via junction box These are TX transducer cables terminated in 50-pin D-sub connectors. Each TX RIO board connects to two TX transducer cables. 317669/B...
  • Page 82 EM 122 TXP RIO – Rear Interface Board Figure 30 TXP RIO Power switch • A - AC power selector for the fan unit External connections • C70 - Control signals connected to the BSP RIO board This cable is equipped with a standard 15-pin D-sub connector and is connected to the BSP RIO board.
  • Page 83 Cable layout and interconnections HVP RIO Purpose and description This is a rear I/O module with the following features Figure 31 HVP RIO The following cables can be connected to the circuit board. External connections • C80 – BSP RIO (sync. signals) This is a link signal to BSP RIO Trig in/out (C58) with a 9–pins connector.

  • Page 84: Power And Control Cables Between Sub-Racks - Rear View

    EM 122 • C82 - Filtered AC power output connected to TXP-RIO Power supply male equivalent socket connected to RIO TXP. The cable is installed by the manufacturer. • C83 / C84 - Mains AC power input These are 115/230 Vac AC mains cables to the Transceiver Unit. Cable C83 and C84 must be equipped with a 3-pin IEC female socket.
  • Page 85 Cable layout and interconnections Figure 32 Transceiver Unit sub-racks, rear view 317669/B...

  • Page 86: Preamplifier

    EM 122 • B – Power cable between TxP Rio and HVP Rio • C – Connection cable between TxP Rio and BSP RIO for control signals • D – Connection cable between HVP Rio and BSP RIO for trig in/out signals Preamplifier Preamplifier –...

  • Page 87: Preamplifier - Rear View

    Cable layout and interconnections The figure shows that the Preamplifier has 8 pcs of DP16 cards and 1 pc of Power supply 12 Volt. Preamplifier – rear view The figure shows where the receiver signal will be transferred to the SBP 300 through P1 connection.
  • Page 88 EM 122 Figure 34 Preamplifier – underneath view 317669/B...

  • Page 89: Transducer Cables

    4 degrees The Preamplifier Unit is connected to the Transceiver Unit with 2 cables. The following cable information is available both in the EM 122 installation and maintenance manuals. The cable markings are normally recorded in the installation manual first, and it is recommended to copy these records to the maintenance manual later.
  • Page 90 Note In order to ensure proper operation by the EM 122 system, it is of vital importance that the physical location of the transducer modules fits the designated channel number in the transmit and receiver circuitry.

  • Page 91: Receive Array Cables

    Note In order to ensure proper operation by the EM 122 system, it is of vital importance that the physical location of the transducer modules fits the designated module number in the transmit and receive circuitry.

  • Page 92: Cables Between Tx Junction Box(Es) And Transceiver Unit For 0.5 Degree

    EM 122 During installation, you can select any RX module you wish and place them in random order in the frame. However, you MUST write down the serial number on each module in the order they have been positioned in the frame, so that you later can identify the modules in positions 1, 2, 3 and so on.

  • Page 93: 4 317669/B

    Cable layout and interconnections For every two transducer cables connected to the Junction Box, one cable is passed on to the Transceiver Unit. The connections on both units are made with 50–pin “D-sub” connectors. The cables and corresponding sockets are identified as listed in the table. Table 3 TX Junction Box(es) and Transceiver Unit Cabling TX Junction Box(es) and Transceiver Unit Cabling Module...
  • Page 94 EM 122 Table 3 TX Junction Box(es) and Transceiver Unit Cabling (cont'd.) TX Junction Box(es) and Transceiver Unit Cabling Module TX Junction Box output Socket on Transceiver Input socket ID on TX socket and cable ID Unit Junction Box TX 11/35 T6/18 TX Rio 9 –...

  • Page 95: Cables Between Preamplifier Unit And Transceiver Unit

    Cable layout and interconnections Figure 38 TX Junction Box The signal cable between TX Junction box 1 and box 2 has to be connected from arrow A to B. The cable are supplied with the system. Signal cable Junction box on page 146 Cables between Preamplifier Unit and Transceiver Unit The signal cabling between the Preamplifier Unit and the Transceiver Unit is made with 8, 4 or 2 individual cables.
  • Page 96 EM 122 Table 4 Preamplifier Unit and Transceiver Unit Cabling (cont'd.) Preamplifier Unit to Transceiver Unit Cabling Module Input socket ID on Preamplifier Unit output Socket on Transceiver Preamplifier Unit socket and cable ID Unit RX 5 RX Rio 2 – J3...
  • Page 97 Cable layout and interconnections Figure 40 EM 122 Transceiver Unit’s rear panel RX 317669/B...

  • Page 98: Alignment

    Figure 41 Reference points The EM 122 is a precision instrument for bathymetric swath mapping. To be able to produce data that are both detailed and correct, it is necessary to calibrate the survey vessel very well, and perhaps better than what may have been standard practice earlier.

  • Page 99: Vessel Coordinate System

    After the installation is completed in dock, a full set of alignment measurements must be carried out. This job has to be done by professional and experienced land surveyors, typically equipment is electronic total stations. Kongsberg Maritime can not be expected to have qualified personnel for such work.

  • Page 100: Sensor Location And Alignment

    EM 122 Figure 42 Reference points Reference points must be established on the vessel at selected positions. These are needed during measurements of the sensor positions. Visual markings at these positions should be prepared and noted on the vessel drawings with XYZ coordinates in the vessel coordinate system.

  • Page 101: Heading Sensor

    alignment The latter point is recommended if the sensor is used for other purposes than just the multibeam, or if its accuracy is sensitive to horizontal acceleration. If there is any point in the fore-aft direction which does not change height with respect to the water line with changes in vessel speed, this will be the ideal location for the motion sensor as it will eliminate any errors from squat induced height changes which is not measured by current motion sensors.

  • Page 102: Transducer Measurements

    EM 122 Transducer Measurements It may be most practical to perform these measurements on the transducer mounting frames before installation of the transducer modules. A final verification after module installation is then required. Note that it also necessary to ensure that the final transducer array face is flat with a maximum deviation from flatness of 5 mm peak to peak including any rotation.

  • Page 103: System Calibration After Final Alignment

    System calibration after final alignment During the sea trials (SAT), calibration surveys are required as described in the EM 122 Operator Manual. Based on the calibration parameters determined from these surveys, together with the measurements done in the dry-dock, proper values are entered into the EM 122.

  • Page 104: System Test

    • Electrical checks on page 106 • Final installation checks on page 108 After the installation has been performed and before the EM 122 system is brought into operation for the first time, a series of test procedures must be carried out to confirm a correct installation.

  • Page 105: Visual Inspection Of Units

    After the physical installation has been carried out, all the system units must be visually checked to ensure that the EM 122 units have been installed correctly. You must ensure that the units have been mounted in the correct locations, correctly orientated (e.g. the right way up) and are correctly secured.

  • Page 106: Preamplifier Unit

    Checked (date/sign):__________________________________ Preamplifier Unit Perform a close visual inspection of the EM 122 Preamplifier Unit cabinet. Check that the unit is installed in the correct location, and is suitably orientated to enable easy maintenance. Check that the proper mounting bolts have been used, and that proper torque has been applied.
  • Page 107 System test Check that the proper mounting bolts have been used, and that proper torque has been applied. Check that the unit is not damaged. Make sure that appropriate slack has been applied to the cables. Check that the sonar room is equipped with proper light for maintenance work. Check that the sonar room is equipped with the ventilation facilities required for continuous operation.

  • Page 108: Electrical Checks

    EM 122 Electrical checks Scope This section of the manual contains the test procedures for the EM 122 system’s power and signal interface cables. WARNING These checks must be completed before any power is switched onto the system. Cabling Visual cable inspection Refer to the cable plans and interconnection diagrams, and check all power and interconnection cables.

  • Page 109: Operational Voltage

    System test Connect your continuity tester to the two terminals in question and check the continuity. • If a low resistance exists between the two cores, this may indicate the cores are connected to circuits or units with low internal resistance. If this is the case, disconnect the cores from the terminal block and test again.

  • Page 110: Final Installation Checks

    Check that the data from the motion sensor, the heading sensor and the positioning system are correctly read by the EM 122 and that the values are reasonable before un-docing. The steps in this procedure may be incorporated in the “Harbour Acceptance Test” carried out as a final check to test both the installation and the main functions of the system.

  • Page 111: Drawing File

    Drawing file Drawing file This chapter holds the drawings referenced to in the other sections of the manual. • System drawings on page 109 • Cable drawings on page 131 Caution The mechanical drawings/illustrations are for information and guidance only. They are not in scale. DO NOT MANUFACTURE ANYTHING BASED ON THESE ILLUSTRATIONS –...

  • Page 112: Rx Module

    EM 122 RX Module Figure 43 RX Module, outline dimensions (340) 1 mm (Draft angle) 14.5 Transducer cable ø13 25 pins D-Connector Weight: 24 kg Note: All measurements are in mm. CD021031 Page 1 of 1 The drawing is not in scale.

  • Page 113: Tx Module

    Drawing file TX module Figure 44 TX module – outline dimensions 25 Pins D-Connector Transducer cable, ø13 178.6 131.42 Weight: 58kg Note: All measurements are in mm. CD021032 Page 1 of 1 The drawing is not in scale. 834-213673 Rev .B 317669/B...

  • Page 114: Tx Array Mounting Frame Assembly 0.5 Degree

    EM 122 TX array mounting frame assembly 0.5 degree Figure 45 TX array mounting frame assembly 0.5 degree Note: All measurements are in mm. Cd021 108 Page 1 of 1 The drawing is not in scale. 372053 Rev .A 317669/B...

  • Page 115: Tx Array Mounting Frame Assembly 1 Degree

    Drawing file TX array mounting frame assembly 1 degree Figure 46 TX array mounting frame assembly 1 degree M12x40 bolt (560-075802) Stay rod (560-213365) Clamp 4 Dummy Module (599-213436) Clamp 3 Dummy Module (599-213434) Clamp 2 (599-21355) Clamp 1 (599-21353) Mounting frame (599-213430) Weight: 1380kg Clamp 5 Dummy Module (599-213438)

  • Page 116: Tx Array

    EM 122 TX array Figure 47 TX array with casing and modules – 1 degree Note: All measurements are in mm. CD021003 Page 1 of 2 The drawing is not in scale. 821-213754 Rev .A 317669/B...
  • Page 117 Drawing file Figure 48 TX array with casing and mounting frame – 1 degree Note: All measurements are in mm. CD021003 Page 2 of 2 The drawing is not in scale. 821-213754 Rev .A 317669/B...

  • Page 118: Rx Array

    EM 122 RX array Figure 49 Mounting frame assembly with baffle plates – RX array 2 degree M12x40 bolt (560-075802) Stay rod (560-213398) Mounting frame (599-213390) Clamp 1 assembly (499-213396) Clamp 2 assembly (499-213402) Note: Handle with care Weight: ~700kg Note: All measurements are in mm.

  • Page 119: Rx Array With Casing - 2 Degree

    Drawing file RX array with casing – 2 degree Figure 50 RX array with casing and modules – 2 degree Note: Observe the direction of the bow and the dif ference between the gaps of stay bolts (300/350) when installing the mounting frame.
  • Page 120 EM 122 Figure 51 RX array with casing, mounting frame and baffle plates – 2 degree Note: All measurements are in mm. CD21006B_01 The drawing is not in scale. 821-213756 Rev .D 317669/B...

  • Page 121: Preamplifier

    Drawing file Preamplifier Figure 52 Preamplifier outline dimensions – EM 122 600mm Note: All measurements are in mm. CD021036 Page 1 of 1 The drawing is not in scale. 834-2131 12 Rev .A 317669/B...
  • Page 122 EM 122 Figure 53 Preamplifier outline dimensions – EM 122/EM 302 Ø11 Note: All measurements are in mm. CD021949-012 The drawing is not in scale. 332719 Rev .A Page 1 of 2 317669/B...

  • Page 123: Tx Junction Box

    Drawing file TX Junction Box Figure 54 Outline dimensions System SYSTEM Unit ENHET Part no. REG.NUMMER Ser . no. Compass safe dist. Stand: ST Am Steer: STEm IP classIP Power:V A VA SP CE conformity Made in Norway Note: Cd021040 Page 1 of 1 All measurements are in mm.

  • Page 124: Transducer Cable Layout

    EM 122 Transducer cable layout Figure 55 Cable layout – 1 degree TX (page 1 of 2) Note: All measurements are in mm. Cd021042 Page 1 of 2 The drawing is not in scale. 321205 Rev . A 317669/B...
  • Page 125 Drawing file Figure 56 Cable layout – 1 degree TX (page 2 of 2) Note: All measurements are in mm. Cd021042 Page 2 of 2 The drawing is not in scale. 321205 Rev . A 317669/B...
  • Page 126 EM 122 Figure 57 Cable layout – 0.5 degree TX (page 1 of 2) Cd021 106 Page 1 of 2 315396 Pro03 317669/B...
  • Page 127 Drawing file Figure 58 Cable layout – 0.5 degree TX (page 2 of 2) Cd021 106 Page 2 of 2 315396 Pro03 317669/B...

  • Page 128: Ice Window

    EM 122 Ice window Figure 59 TX Ice window 317669/B...
  • Page 129 Drawing file Figure 60 RX Ice window 317669/B...

  • Page 130: Operator Station And Display

    EM 122 Operator station and display Figure 61 Outline dimensions 24 LCD: Width = 604 mm Height = 408 mm Depth = 68 mm Weight = 10 kg HWS: Width = 338 mm Height = 100 mm Depth = 379 mm Weight = 7.6 kg...

  • Page 131: Preamplifier Unit

    Drawing file Preamplifier Unit Figure 62 RX Preamplifier Unit – internal cabling 317669/B...
  • Page 132 EM 122 Figure 63 RX Preamplifier Unit – internal cabling 317669/B...

  • Page 133: Cable Drawings

    Drawing file Cable drawings Note w400 is a fixed length Ethernet cable supplied with the system. If required, the cable can be extended. Table 6 Operator Station Specifications From/To Ethernet cable with RJ45 on page 141 Operator Station —> Transceiver Unit Ethernet cable with RJ45 on page 141 Operator Station —>...
  • Page 134 EM 122 Table 10 TX Junction Box 2 Specifications From/To TX transducer cables from junction boxes or transducer Transceiver Unit —> TX Junction Box 2 to TRU on page 142 on page TX Junction Box 2 —> Transducer array 317669/B...

  • Page 135: Generic Rs-232 Serial Line

    Drawing file Generic RS-232 Serial line This cable holds a multi purpose serial line. It provides interface with any peripheral unit. One end of the cable connects to the local unit (DTE) with a 9-pin D-connector, while the other connects to the peripheral (DCE) as described in the peripheral unit’s documentation.

  • Page 136: Generic Rs-232 Serial Line

    EM 122 Generic RS-232 Serial line This cable comprises a multi purpose serial line. It provides interface with any peripheral unit. One end of the cable connects to the local unit with a 9-pin D-connector, (DTE) while the other connects to the peripheral...

  • Page 137: Generic Coax Cable

    Drawing file Generic coax cable This cable is used for connections to peripheral units or networks. Local Peripheral unit to Coax connector be connected as described in applicable documentation Live Screen/Ground Live W105 Coax connection to peripheral unit or network Rev.E 317669/B...

  • Page 138: Em Remote Synchronization And On/Off

    EM 122 EM Remote synchronization and On/Off Control signals This cable connects the Transceiver Unit to a remote On/Off switch located in a Remote Control junction box. The same connection allows trigger output and remote control (synchronization) with a serial line.

  • Page 139: Trigger In/Out

    Drawing file Trigger in/out This cable is used to synchronize the echo sounder's transmissions with other acoustic instruments. It is terminated in a standard 9–pin D-sub connector at the Transceiver Unit end. • Conductors: 5 x 2 x 0.5 mm² •...

  • Page 140: Internal Control Signals

    EM 122 Internal control signals This cable is used to transmit synchronization signals and TX enable signals. It is terminated in a standard 15–pin D-sub connector. Local 15-pin D connector Remote unit to be TX Enable (TXEN_TX+) connected as described in...

  • Page 141: Remote Control And External Trig

    Drawing file Remote control and external trig This cable connects the EM 122 Transceiver Unit (HVP RIO) to a remote On/Off switch, normally located in a Remote Control junction box. The same connection allows trigger output and remote control (synchronization) with a serial line.

  • Page 142: Standard Ac Power Cable

    EM 122 Standard AC power cable This cable is a standard three-wire power cable. The instrument end is terminated in a standard IEC female socket, while the other end is terminated in a plug suitable for the local standard. IEC plug...

  • Page 143: Ethernet Cable With Rj45

    Drawing file Ethernet cable with RJ45 This cable is used to provide standard Ethernet connections. Note that various categories exists. Cat.5 E and Cat.6 cables are used in local area networks with date rate exceeding 100 Mbit/s. Ethernet cables are available commercially in different lengths, colours and categories. Pin 8 Pin 1 End view...

  • Page 144: Tx Transducer Cables From Junction Boxes Or Transducer To Tru

    EM 122 TX transducer cables from junction boxes or transducer to These are one to one cables from the EM 122 Transceiver Unit to the TX Junction Boxes. Each cable is terminated at the cabinet's rear through a 50–pins “D-sub” connector.

  • Page 145: Tx Transducer Cables To Transducer Array

    Drawing file TX transducer cables to transducer array These are the cables from the EM 122 Junction Boxes to the TX transducer arrays. Each cable is terminated at the junction box through a 25–pins “D-sub” connector. At the transducer end, the cables is moulded to their respective modules. The cables are supplied by manufacturer.

  • Page 146: Rx Transducer Cable From Preamplifier To Tru

    EM 122 RX transducer cable from Preamplifier to TRU This one to one cable is used from the EM 122 Preamplifier to the Transceiver Unit. Each cable is terminated at the cabinet's rear through a 50–pins “D-sub” connector. The cables are supplied by manufacturer.

  • Page 147: Preamplifier Unit Cable From Array

    Drawing file Preamplifier Unit cable from array This cable is used from the array to the EM 122 Preamplifier Unit. The cable is terminated at the Preamplifier Unit bottom side through a 25–pin “D-sub” connector. The cables are supplied by manufacturer.

  • Page 148: Signal Cable Junction Box

    EM 122 Signal cable Junction box This signal cable are used to provides interface between junction box 1 and junction box 2. Cable specifications • Conductors: 8 x 0.5 mm² • Screen: Screened • Maximum diameter: Φ8.8 mm 317669/B...

  • Page 149: General Safety Rules

    Appendix A General safety rules Appendix A General safety rules The Kongsberg EM 122 Multibeam echo sounder system operates on 230 Vac 50/60 Hz. Note The EM 122 is by default wired to 230 Vac. For 115 Vac operation, please contact km.hs@kongsberg.com.

  • Page 150: Basic Cable Requirements

    EM 122 Appendix B Basic cable requirements This appendix provides general information related to the installation and maintenance of system cables. Cable trays All permanently installed cables associated with the system must be supported and protected along their entire lengths using conduits and/or cable trays. The only exception to this rule is over the final short distance (maximum.

  • Page 151: Radio Frequency Interference

    Appendix B Basic cable requirements • Cables having a copper sheath or braiding must be installed in such a way that galvanic corrosion by contact with other metals is prevented. • For service purpose of the system, all cables should be allocated spare conductor pairs. Also, space within the vessel should be set aside for the installation of extra cables.

  • Page 152: Cable Connections

    EM 122 and designed to ensure a good ground connection. The glands used must be firmly attached to, and in good electrical contact with, a metal structure grounded in accordance with these recommendations. Electrical continuity must be ensured along the entire length of all cable coverings, particularly at joints and splices.
  • Page 153 Index Grounding RJ45 requirements, 149 plug, 141 About RS-232 EM 122, 8 cable specifications, 133 Alignment, 96 Rules safety, 147 Identification cable requirements, 150 Installation Baffle plates drawings, 109 Modify mounting steps, 23 Safety frames, 29 Introduction, 7 general rules, 147...
  • Page 154 © 2013 Kongsberg Maritime...

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