Page 1 Kongsberg EM 304 MKII Multibeam Echo Sounder Maintenance manual Image: Black Mud Canyon, courtesy of Ifremer. Kongsberg product: EM 304 bathymetry. Location: North Atlantic Ocean. Depth:200 - 4100 m 470434/A January 2021 © Kongsberg Maritime AS...
Page 2 Document information • : Kongsberg EM 304 MKII Product • : Maintenance manual Document • : 470434 Document part number • Revision • : 15 January 2021 Date of issue Copyright The information contained in this document remains the sole property of Kongsberg Maritime AS. No part of this document may be copied or reproduced in any form or by any means, and the information contained within it is not to be communicated to a third party, without the prior written consent of Kongsberg Maritime AS.
Page 3: Table Of Contents
Maintenance manual Table of contents ABOUT THIS MANUAL .............. 7 KONGSBERG EM 304 MKII ............8 System description ......................9 Technical details.......................10 System diagram 0.5 x 0.5 degrees system ............... 11 System units ........................13 Transducer description ...................13 Transmitter Unit description...................14 Receiver Unit description ..................14 Processing Unit description..................14 Computer description .....................15 Support information ......................16...
Page 4 Kongsberg EM 304 MKII Processing Unit replacement ..................47 CPU board replacement..................50 Ethernet switch replacement - Processing Unit............53 CBMF board replacement ..................56 Fan unit replacement - Processing Unit ..............61 Fuse replacement - PU ...................64 Transmitter Unit - Parts replacement ................67 TX RIO board replacement ..................68 LPTX36 board replacement ...................73 Ethernet switch replacement - Transmitter Unit.............79 Fan unit replacement - Transmitter Unit ..............84...
Page 5 Maintenance manual Processing Unit familiarization..................124 Processing Unit front panel description.................125 Processing Unit rear panel description ................126 Processing Unit circuit boards and modules..............127 CPU board........................128 Introduction ......................128 Concurrent PP B12 CPU board overview ............128 Concurrent PP B12 CPU board connectors............129 CPU board Concurrent PP833 overview..............129 CPU board Concurrent PP833 connectors ............130 CP219 Ethernet switch....................131 Ethernet switch overview ..................131...
Page 6 Kongsberg EM 304 MKII Unpacking standard parts and units..............160 Unpacking mechanical units ................161 Unpacking electronic and electromechanical units ..........162 Unpacking transducers ..................163 Specifications for storage after unpacking..............165 470434/A...
Page 7: About This Manual
About this manual About this manual The purpose of this manual is to present the descriptions and drawings required to do basic maintenance tasks on the EM 304 MKII Multibeam Echo Sounder. The equipment described in this manual includes the complete system with associated cabinets, but not those system units provided locally by the customer, installation shipyard or local dealer.
Page 8: Kongsberg Em 304 Mkii
Kongsberg EM 304 MKII Maintenance manual Kongsberg EM 304 MKII Topics System description, page 9 Technical details, page 10 System diagram 0.5 x 0.5 degrees system, page 11 System units, page 13 Support information, page 16 470434/A...
Page 9: System Description
Kongsberg EM 304 MKII System description The modular, state-of-the-art EM 304 MKII performs accurate, high resolution seabed mapping in shallow to full ocean depth (11000 metres). The EM 304 MKII is designed to perform seabed mapping with an unsurpassed resolution, coverage and accuracy. The system is cost effective, reliable and easily operated.
Page 10: Technical Details
Kongsberg EM 304 MKII Maintenance manual Technical details The EM 304 MKII operates at sonar frequencies in the 20-32 kHz range. The transmit fan is divided into 4 sectors in shallow modes (8 sectors in deep modes) to maximize range capability but also to suppress interference from multiples of strong bottom echoes.
Page 11: System Diagram 0.5 X 0.5 Degrees System
Kongsberg EM 304 MKII System diagram 0.5 x 0.5 degrees system The system diagram identifies the main components of a basic EM 304 MKII system. Only the main connections between the units are shown. Detailed interface capabilities and power cables are not shown. 470434/A...
Page 12 Kongsberg EM 304 MKII Maintenance manual Hydrographic Work Station Interfaces: • Sound speed sensors • Tide • Centre depth output Processing Unit Interfaces: • Positioning systems • Attitude (roll, pitch and heave) • Sound speed sensor • Velocity • Clock •...
Page 13: System Units
Kongsberg EM 304 MKII System units Topics Transducer description, page 13 Transmitter Unit description, page 14 Receiver Unit description, page 14 Processing Unit description, page 14 Computer description, page 15 Transducer description A transducer is a device that converts one form of energy to another. In an echo sounder system the transducer converts between electric energy and sound.
Page 14: Transmitter Unit Description
Kongsberg EM 304 MKII Maintenance manual Transmitter Unit description The EM 304 MKII 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 15: Computer Description
Kongsberg EM 304 MKII clock. More than one sensor of each type may be connected simultaneously, with one in use and all of them logged. The Processing Unit controls the Transmitter and Receiver units via Ethernet communication, and is also interfaced to the Operator station via Ethernet. The 48 V output from the Processing Unit can be used for remote on/off control of the Transmitter and Receiver Units.
Page 16: Support Information
Kongsberg EM 304 MKII Maintenance manual Support information Should you need technical support for your EM 304 MKII system you must contact a Kongsberg Maritime office. A list of all our offices is provided on our website. You can also contact our main support office in Norway. A 24 hour telephone support service may also be available depending on your Service Level Agreement.
Page 17: Troubleshooting
Troubleshooting Troubleshooting Topics Tools for troubleshooting, page 18 BIST (Built-In Self Test) dialog box, page 19 BIST (Built-In Self Test) theory, page 22 470434/A...
Page 18: Tools For Troubleshooting
Kongsberg EM 304 MKII Maintenance manual Tools for troubleshooting Efficient EM 304 MKII troubleshooting requires good knowledge of its functionality and design. Specific tools may also be required for certain tasks. The following tools are relevant for troubleshooting the Kongsberg EM 304 MKII Multibeam Echo Sounder.
Page 19: Bist (Built-In Self Test) Dialog Box
Troubleshooting BIST (Built-In Self Test) dialog box dialog box provides several automatic tests to check the operation of the BIST echo sounder system. How to open • : Select on the menu. Select the spanner icon, then Installation Parameters View select BIST •...
Page 20 Kongsberg EM 304 MKII Maintenance manual Details CPU Test This test presents the CPU type, the CPU clock frequency, the current and maximum temperatures for the CPU die and for the CPU board. In addition some key voltages are reported, and finally the network addresses for the board’s interfaces.
Page 21 Troubleshooting RX noise spectrum This test measures the isotropic spectral noise level for each receiver channel as done in the RX noise level test. The noise spectrum level is displayed for small frequency bands for groups of 32 channels. In addition the average level for all channels are displayed.
Page 22: Bist (Built-In Self Test) Theory
Kongsberg EM 304 MKII Maintenance manual BIST (Built-In Self Test) theory Topics BIST Introduction, page 23 CPU Test, page 24 CBMF test, page 25 RX unit test, page 26 TX unit test, page 27 CBMF-CPU link, page 28 RX-CBMF link, page 29 RX channels, page 30 TX channels, page 31 RX noise level, page 32...
Page 23: Bist Introduction
Troubleshooting BIST Introduction The purpose of the offline BIST system is to detect errors and locate the failed module. The BIST tests are organized in a sequence, and tests module by module. The CPU executes the BISTs and sends the BIST reply to the operator station. Temperature, voltage, communication and firmware versions of each board and module are tested.
Page 24: Cpu Test
Kongsberg EM 304 MKII Maintenance manual CPU Test Checks the CPU board in the in the EM 304 MKII Processing Unit. This test presents the CPU type, the CPU clock frequency, the current and maximum temperatures for the CPU die and for the CPU board. In addition some key voltages are reported, and finally the network addresses for the board’s interfaces.
Page 25: Cbmf Test
Troubleshooting CBMF test Checks all beamformer and signal processing boards (CBMF) in the EM 304 MKII Processing Unit. This test presents the CBMF board temperature, the internal power supply voltages. In addition software and firmware versions are displayed. Dark green modules are to be tested. Light green modules have to function to be able to perform current test.
Page 26: Rx Unit Test
Kongsberg EM 304 MKII Maintenance manual RX unit test Checks the receiver electronics in the EM 304 MKII Receiver Unit. This test presents the internal temperatures and voltages in the receiver electronics. In addition software and firmware versions are displayed. Dark green modules are to be tested.
Page 27: Tx Unit Test
Troubleshooting TX unit test Checks the transmitter electronics in the EM 304 MKII Transmitter Unit. This test presents the internal temperatures and voltages in the transmitter electronics. In addition software and firmware versions are displayed. Dark green modules are to be tested. Light green modules have to function to be able to perform current test.
Page 28: Cbmf-Cpu Link
Kongsberg EM 304 MKII Maintenance manual CBMF-CPU link Checks the parallel bus interface between the CBMF board and the CPU board. This test checks CBMF board(s), Ethernet connection and the parallel bus interface between the CBMF board(s) and the CPU circuit board. A large set of known data is transferred from the CPU unit on Ethernet via CBMF back to the CPU board.
Page 29: Rx-Cbmf Link
Troubleshooting RX-CBMF link This test checks the GBit interface between the RX unit and the CBMF boards. A large set of known data is transferred from RX unit via CBMF to the CPU board on parallel bus. The data received is checked by the CPU board. Dark green modules are to be tested.
Page 30: Rx Channels
Kongsberg EM 304 MKII Maintenance manual RX channels Checks the RX channels including transducers by injecting a test signal at receiver input. The Receiver Unit has a programmable signal generator board that is used to inject a test signal at the preamplifier inputs in the Receiver Unit. The BIST report displays the measured RX transducer impedance for all RX channels.
Page 31: Tx Channels
Troubleshooting TX channels Checks all TX channels including the transducers. This test checks the impedance of all TX elements. This is done by measuring the voltage and current used by all individual transmitters. Dark green modules are to be tested. Light green modules have to function to be able to perform current test.
Page 32: Rx Noise Level
Kongsberg EM 304 MKII Maintenance manual RX noise level Checks the isotropic spectral noise level. This test measures the average isotropic spectral noise level for each receiver channel (in dB rel 1 μPa/Hz) for different frequency bands. The receiver directivity index, the transducer sensitivity and the filter bandwidth is used to convert to isotropic spectral noise level.
Page 33: Rx Noise Spectrum
Troubleshooting RX noise spectrum Checks the isotropic spectral noise level. This test measures the isotropic spectral noise level for each receiver channel as done in the RX noise level test. The noise spectrum level is displayed for small frequency bands for groups of 32 channels.
Page 34: Software Date And Versions
Kongsberg EM 304 MKII Maintenance manual Software date and versions Checks the software date and versions. This test presents the software date and versions for the system components. Dark green modules are to be tested. Light green modules have to function to be able to perform current test.
Page 35: Preventive Maintenance
Preventive maintenance Preventive maintenance Topics Inspecting and cleaning the transducer face, page 36 Painting the transducer face, page 38 Inspecting and replacing sacrificial anodes, page 40 Approved anti-fouling paints, page 41 470434/A...
Page 36: Inspecting And Cleaning The Transducer Face
Kongsberg EM 304 MKII Maintenance manual Inspecting and cleaning the transducer face Marine growth (biological fouling) on the transducer face reduces the EM 304 MKII performance. For this reason, it is important to keep the transducer face clean. Every time your vessel is in dry dock, you must remove the marine growth. At the same time, you must inspect the transducer closely for physical damage.
Page 37 Preventive maintenance Biological material which is strongly rooted in the substrate can be removed carefully with a piece of wood or plastic. If required, you can also use citric acid. Apply, leave it working for several hours, and rinse thoroughly with fresh water. Note Do not use high-pressure water, sandblasting, metal tools or strong solvents to clean the transducer face.
Page 38: Painting The Transducer Face
Kongsberg EM 304 MKII Maintenance manual Painting the transducer face Marine growth (biological fouling) on the transducer face reduces the EM 304 MKII performance. We recommend that you paint the transducer face immediately after installation, and then again as often as required to maintain the protection. Prerequisites The following tools and consumables are required.
Page 39 Preventive maintenance 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 304 MKII performance. Remove all dust. Apply the primer, and let it dry. Apply the paint.
Page 40: Inspecting And Replacing Sacrificial Anodes
Kongsberg EM 304 MKII Maintenance manual Inspecting and replacing sacrificial anodes Anodes are used on various units to prevent metals from corroding in salt water. Context Anodes are constructed of a metal alloy with an active voltage that is greater than the metal of the structure;...
Page 41: Approved Anti-Fouling Paints
Preventive maintenance 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 42 Kongsberg EM 304 MKII Maintenance manual • Intersleek 1100SR – : Intersleek 737 Primer Apply 50 µm dry film thickness. – : Intersleek 1100SR Paint Apply 150 µm dry film thickness. • Intersmooth 7465Si SPC – : Intergard 269 Primer Apply 40 µm dry film thickness.
Page 43: Parts Replacement
Parts replacement Parts replacement Topics Tools and equipment required for parts replacement, page 44 Processing Unit - Parts replacement, page 46 Transmitter Unit - Parts replacement, page 67 Receiver Unit - Parts replacement, page 100 470434/A...
Page 44: Tools And Equipment Required For Parts Replacement
Kongsberg EM 304 MKII Maintenance manual Tools and equipment required for parts replacement In order to safely remove and replace printed circuit boards modules, generic and specific tools are required. You must be equipped with a standard set of tools. This tool set must comprise the normal tools for electronic and electromechanical tasks.
Page 45 Parts replacement If, for any reason, it is necessary to move the circuit board from the conductive service mat, it must be placed in an approved antistatic transportation container (for example a static shielding bag) before transportation. During installation and servicing, all electrical equipment (for example soldering irons and test equipment) must be earthed.
Page 46: Processing Unit - Parts Replacement
Kongsberg EM 304 MKII Maintenance manual Processing Unit - Parts replacement Topics Processing Unit replacement, page 47 CPU board replacement, page 50 Ethernet switch replacement - Processing Unit, page 53 CBMF board replacement, page 56 Fan unit replacement - Processing Unit, page 61 Fuse replacement - PU, page 64 470434/A...
Page 47: Processing Unit Replacement
Parts replacement Processing Unit replacement The complete Processing Unit can be supplied as a spare part. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions. The Processing Unit is the central controlling device in the EM multibeam system.
Page 48 Kongsberg EM 304 MKII Maintenance manual Removing the Processing Unit One or two Processing Units can be used in the EM ® system. The complete Processing Unit can be supplied as a spare part. Prerequisites You must be equipped with a standard set of tools. This tool set must comprise the normal tools for mechanical tasks.
Page 49 Parts replacement Installing the Processing Unit The Processing Unit is designed to be installed in a 19" rack. Prerequisites You must be equipped with a standard set of tools. This tool set must comprise the normal tools for electronic and electromechanical tasks. This includes different screwdriver types, pliers, spanners, a cable stripper, a soldering iron, etc.
Page 50: Cpu Board Replacement
Kongsberg EM 304 MKII Maintenance manual CPU board replacement If a CPU board fails to operate, it must be replaced with a new circuit board. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions. This is a generic photo.
Page 51 Parts replacement Removing the CPU board If a CPU board fails to operate, it must be replaced with a new circuit board. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions. Prerequisites This is a generic photo.
Page 52 Kongsberg EM 304 MKII Maintenance manual Installing the CPU board If a CPU board fails to operate, it must be replaced with a new circuit board. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions.
Page 53: Ethernet Switch Replacement - Processing Unit
Parts replacement Ethernet switch replacement - Processing Unit If a VadaTech CP219 Ethernet switch fails to operate, it must be replaced with a new switch. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions. The VadaTech CP219 board is used as an Ethernet switch in the EM 304 MKII Processing Unit.
Page 54 Kongsberg EM 304 MKII Maintenance manual Removing the Ethernet switch - Processing Unit If a VadaTech CP219 Ethernet switch fails to operate, it must be replaced with a new switch. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions.
Page 55 Parts replacement Installing the Ethernet switch - Processing Unit If a VadaTech CP219 Ethernet switch fails to operate, it must be replaced with a new switch. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions. Prerequisites A new circuit board must be available.
Page 56: Cbmf Board Replacement
Kongsberg EM 304 MKII Maintenance manual CBMF board replacement If a CBMF board fails to operate, it must be replaced with a new circuit board. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions. The Compact Beamformer (CBMF) board is used by the Processing Unit for beamforming and signal processing purposes.
Page 57 Parts replacement Removing the CBMF board If a CBMF board fails to operate, it must be replaced with a new circuit board. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions. Prerequisites This is a generic photo.
Page 58 Kongsberg EM 304 MKII Maintenance manual Installing the CBMF board If a CBMF board fails to operate, it must be replaced with a new circuit board. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions.
Page 59 Parts replacement Check the DIP switch settings and correct them if they are wrong. The switch setting on the CBMF board has to be correct. All the switches on all the CBMF boards in the Processing Unit should be set to OFF. OFF is when they are pushed towards the edge of the circuit board.
Page 60 Kongsberg EM 304 MKII Maintenance manual Related topics CBMF board configuration, page 134 470434/A...
Page 61: Fan Unit Replacement - Processing Unit
Parts replacement Fan unit replacement - Processing Unit If a fan unit fails to operate, it must be replaced with a new module. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions. The Processing Unit has two fan units for cooling purposes.
Page 62 Kongsberg EM 304 MKII Maintenance manual Removing the fan unit If a fan unit fails to operate, it must be replaced with a new module. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions.
Page 63 Parts replacement Installing the fan unit If a fan unit fails to operate, it must be replaced with a new module. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions. Prerequisites You must be equipped with a standard set of tools.
Page 64: Fuse Replacement - Pu
Kongsberg EM 304 MKII Maintenance manual Fuse replacement - PU The Processing Unit is protected with two ceramic body cartridge fuses on the power inlet. The fuses are replaced if blown. Note These procedures will instruct you to handle electronic circuit boards and/or modules. Before doing so, make sure that you are familiar with the applicable handling precautions.
Page 65 Parts replacement Removing the fuse in the Processing Unit The Processing Unit is protected with two ceramic body cartridge fuses on the power inlet. The fuses are replaced if blown. Follow this procedure to remove the fuses. Prerequisites You must be equipped with a standard set of tools. This tool set must comprise the normal tools for electromechanical tasks.
Page 66 Kongsberg EM 304 MKII Maintenance manual Installing the fuse in the Processing Unit The Processing Unit is protected with two ceramic body cartridge fuses on the power inlet. The fuses are replaced if blown. Follow theis procedure to install the fuses. Prerequisites A new fuse must be available.
Page 67: Transmitter Unit - Parts Replacement
Parts replacement Transmitter Unit - Parts replacement Topics TX RIO board replacement, page 68 LPTX36 board replacement, page 73 Ethernet switch replacement - Transmitter Unit, page 79 Fan unit replacement - Transmitter Unit, page 84 12V Power supply replacement - Transmitter Unit, page 89 HV Power supply replacement - Transmitter Unit, page 95 470434/A...
Page 68: Tx Rio Board Replacement
Kongsberg EM 304 MKII Maintenance manual TX RIO board replacement There are up to 12 TX RIO boards in each Transmitter Unit. If a TX RIO board fails, it must be replaced with a new circuit board. The TX RIO boards are located behind the protection lid at the bottom of the Transmitter Unit.
Page 69 Parts replacement Removing the TX RIO board If a TX RIO board fails, it must be replaced with a new circuit board. Follow this procedure to remove the TX RIO board. Prerequisites You must be equipped with a standard set of tools.
Page 70 Kongsberg EM 304 MKII Maintenance manual Identify the circuit board you wish to remove. There are up to 12 TX RIO boards in each Transmitter Unit. (A - B) TX RIO board 1 TX RIO board 12 Screws Disconnect all relevant cables. Loosen the screws.
Page 71 Parts replacement Installing the TX RIO board If a TX RIO board fails, it must be replaced with a new circuit board. Follow this procedure to install the TX RIO board. Prerequisites The failed circuit board must have been removed. A new circuit board must be available.
Page 72 Kongsberg EM 304 MKII Maintenance manual Connect the cables. Mount protection cover on the Transmitter Unit and tighten the screws. Protection cover Screws Connect AC mains power. Further requirements Once the unit has been installed, follow the normal procedure to turn on the EM 304 MKII.
Page 73: Lptx36 Board Replacement
Parts replacement LPTX36 board replacement There are up to 24 LPTX36 Transmitter boards in each Transmitter Unit. If an LPTX36 board fails, it must be replaced with a new circuit board. The LPTX36 Transmitter boards are located behind the lid on top of the Transmitter Unit.
Page 74 Kongsberg EM 304 MKII Maintenance manual Removing the LPTX36 board If an LPTX36 board fails, it must be replaced with a new circuit board. Follow this procedure to remove the LPTX36 board. Prerequisites You must be equipped with a standard set of tools.
Page 75 Parts replacement Identify the circuit board you wish to remove. There are up to 24 LPTX36 Transmitter boards in each Transmitter Unit. (A - B) LPTX36 board 1 LPTX36 board 24 Screws Disconnect all relevant cables. Loosen the screws. Grab the screws and pull the circuit board straight out. 470434/A...
Page 76 Kongsberg EM 304 MKII Maintenance manual Place the unit on a clean and stable workbench. Further requirements To return the unit for repair or replacement, follow the relevant handling instructions. 470434/A...
Page 77 Parts replacement Installing the LPTX36 board If an LPTX36 board fails, it must be replaced with a new circuit board. Follow this procedure to install the LPTX36 board. Prerequisites LPTX36 board 1 LPTX36 board 24 Screws The failed circuit board must have been removed.
Page 78 Kongsberg EM 304 MKII Maintenance manual Grab the screws and push the circuit board straight in. Tighten the screws. Connect the cables. Put the lid on the Transmitter Unit and tighten the screws. Connect AC mains power. Further requirements Once the unit has been installed, follow the normal procedure to turn on the EM 304 MKII.
Page 79: Ethernet Switch Replacement - Transmitter Unit
Parts replacement Ethernet switch replacement - Transmitter Unit There are up to three Ethernet switches in each Transmitter Unit. If an Ethernet switch fails, it must be replaced with a new module. The Ethernet switches are located behind the lid on top of the Transmitter Unit.
Page 80 Kongsberg EM 304 MKII Maintenance manual Removing the Ethernet switch If an Ethernet switch fails, it must be replaced with a new module. Follow this procedure to remove the Ethernet switch. Prerequisites Ethernet switch 1 Ethernet switch 3 Screws Handles You must be equipped with a standard set of tools.
Page 81 Parts replacement Loosen the screws. Loosen the circuit board by pushing the two red locking devices on the handles. Push the handles outward. Grab the handles and pull the circuit board straight out. 10 Place the unit on a clean and stable workbench. Further requirements To return the unit for repair or replacement, follow the relevant handling instructions.
Page 82 Kongsberg EM 304 MKII Maintenance manual Installing the Ethernet switch If an Ethernet switch fails, it must be replaced with a new module. Follow this procedure to install the Ethernet switch. Prerequisites Ethernet switch 1 Ethernet switch 3 Screws Handles The failed circuit board must have been removed.
Page 83 Parts replacement Push the handles inward. Tighten the screws. Connect the cables. Put the lid on the Transmitter Unit and tighten the screws. Connect AC mains power. Further requirements Once the unit has been installed, follow the normal procedure to turn on the EM 304 MKII.
Page 84: Fan Unit Replacement - Transmitter Unit
Kongsberg EM 304 MKII Maintenance manual Fan unit replacement - Transmitter Unit Each Transmitter Unit has one fan unit for cooling purposes. If the fan unit fails, it must be replaced with a new unit. Lid with mounting screws Mounting screws Fan unit The fan is located behind the lid on top of the Transmitter Unit.
Page 85 Parts replacement Removing the fan unit If the fan unit fails, it must be replaced with a new unit. Follow this procedure to remove the fan unit. Prerequisites You must be equipped with a standard set of tools. This tool set must comprise the normal tools for electromechanical tasks.
Page 86 Kongsberg EM 304 MKII Maintenance manual Loosen the screws holding the fan unit. Grab the handles and pull the fan unit straight out. Place the unit on a clean and stable workbench. Further requirements To return the unit for repair or replacement, follow the relevant handling instructions. 470434/A...
Page 87 Parts replacement Installing the fan unit If the fan unit fails, it must be replaced with a new unit. Follow this procedure to install the fan unit. Prerequisites The failed fan unit must have been removed. A new fan unit must be available. You must be equipped with a standard set of tools.
Page 88 Kongsberg EM 304 MKII Maintenance manual Tighten the screws holding the fan unit. Put the lid on the Transmitter Unit and tighten the screws. Connect AC mains power. Further requirements Once the unit has been installed, follow the normal procedure to turn on the EM 304 MKII.
Page 89: 12V Power Supply Replacement - Transmitter Unit
Parts replacement 12V Power supply replacement - Transmitter Unit There is one 12V power supply in each Transmitter Unit. If the power supply module fails, it must be replaced with a new module. The power supplies are mounted behind the heat sinks on the sides of the Transmitter Unit.
Page 90 Kongsberg EM 304 MKII Maintenance manual Removing the 12V power supply If the power supply module fails, it must be replaced with a new module. Follow this procedure to remove the power supply module. Prerequisites You must be equipped with a standard set of tools.
Page 91 Parts replacement Disconnect the (C) and the (D) cables from the AC power Control and monitoring power supply. VDC Out - Red DC Out Ground - Black AC power connector Control and monitoring signals The cables are connected with plugs or connectors. Disconnect the (A/B) cable from the Transmitter Unit backplane.
Page 92 Kongsberg EM 304 MKII Maintenance manual Installing the 12V power supply If the power supply module fails, it must be replaced with a new module. Follow this procedure to install the new power supply module. Prerequisites The failed power supply module must have been removed.
Page 93 Parts replacement Mount the power supply unit on the heat sink. Note A thin layer of heat sink compound is required between the power supply and the heat sink. Usually a sufficient amount of heat sink compound is left from the old power supply assembly.
Page 94 Kongsberg EM 304 MKII Maintenance manual Mount the heat sink on the unit and tighten the screws. Use Loctite 243 or similar to secure the screws. Connect AC mains power. Further requirements Once the power supply has been installed, follow the normal procedure to turn on the EM 304 MKII.
Page 95: Hv Power Supply Replacement - Transmitter Unit
Parts replacement HV Power supply replacement - Transmitter Unit There is one HV power supply in each Transmitter Unit. If the power supply module fails, it must be replaced with a new module. The power supplies are mounted behind the heat sinks on the sides of the Transmitter Unit.
Page 96 Kongsberg EM 304 MKII Maintenance manual Removing the HV power supply If the power supply module fails, it must be replaced with a new module. Follow this procedure to remove the power supply module. Prerequisites You must be equipped with a standard set of tools.
Page 97 Parts replacement Carefully turn the heat sink around. Disconnect the (C) and the (D) cables from the AC power Control and monitoring power supply. VDC Out - Orange DC Out Ground - Blue AC power connector Control and monitoring signals Disconnect the (A/B) cable from the Transmitter Unit backplane.
Page 98 Kongsberg EM 304 MKII Maintenance manual Installing the HV power supply If the power supply module fails, it must be replaced with a new module. Follow this procedure to install the new power supply module. Prerequisites The failed power supply module must have been removed.
Page 99 Parts replacement Connect the (A/B) cable from the power supply to the Transmitter Unit VDC Out backplane. VDC Out - Orange DC Out Ground - Blue AC power connector Control and monitoring signals Connect the (C) and the (D) cables to the power AC power Control and monitoring supply.
Page 100: Receiver Unit - Parts Replacement
Kongsberg EM 304 MKII Maintenance manual Receiver Unit - Parts replacement Topics Receiver Unit replacement, page 101 Power supply replacement - Receiver Unit, page 106 470434/A...
Page 101: Receiver Unit Replacement
Parts replacement Receiver Unit replacement The complete receiver Unit can be supplied as a spare part. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions. Topics Removing the Receiver Unit, page 102 Installing the Receiver Unit, page 104 470434/A...
Page 102 Kongsberg EM 304 MKII Maintenance manual Removing the Receiver Unit Follow this procedure to remove the Receiver Unit. Prerequisites Cable connection, behind protection lid Lid for access to circuit boards and power supply You must be equipped with a standard set of tools. This tool set must comprise the normal tools for mechanical tasks.
Page 103 Parts replacement Disconnect the cables. Loosen the unit by removing the mounting bolts. Place the unit on a clean and stable workbench. Remove the cable support bracket. The cable support bracket has to be moved to the spare unit. The Receiver Unit delivered as spare part does not include the cable support bracket.
Page 104 Kongsberg EM 304 MKII Maintenance manual Installing the Receiver Unit Follow this procedure to install the new Receiver Unit. Prerequisites The failed unit must have been removed. A new unit must be available. You must be equipped with a standard set of tools. This tool set must comprise the normal tools for electronic and electromechanical tasks.
Page 105 Parts replacement Close the cable support bracket. Note Make sure the cables are all properly secured, and able to withstand the vibration and movements of the vessel. Install the protection lid. Connect AC mains power. Further requirements Once the unit has been installed, follow the normal procedure to turn on the EM 304 MKII.
Page 106: Power Supply Replacement - Receiver Unit
Kongsberg EM 304 MKII Maintenance manual Power supply replacement - Receiver Unit There is one power supply unit in each Receiver Unit. If the power supply module fails, it must be replaced with a new module. All replacement tasks must be done according to the specified procedures, and you must follow the relevant safety instructions.
Page 107 Parts replacement Removing the power supply If the power supply module fails, it must be replaced with a new module. Follow this procedure to remove the power supply module. Prerequisites You must be equipped with a standard set of tools. This tool set must comprise the normal tools for electromechanical tasks.
Page 108 Kongsberg EM 304 MKII Maintenance manual Disconnect the cables from the power supply unit. All cables are connected to the unit with plugs or connectors. Loosen the mounting screws and remove the bracket with the power supply unit. The power supply module is mounted on a bracket. Loosen the screws and remove the power supply unit from the mounting bracket.
Page 109 Parts replacement Installing the power supply If the power supply module fails, it must be replaced with a new module. Follow this procedure to install the new power supply module. Prerequisites The failed power supply module must have been removed. A new power supply module must be available.
Page 110 Kongsberg EM 304 MKII Maintenance manual Mount the bracket with the power supply unit. Connect the cables. All cables are connected to the unit with plugs or connectors. AC power connector DC output module 1 + Red DC output module 1 - Black DC output module 2 + White DC output module 2 - Black Control and monitoring signals...
Page 111 Parts replacement Put the lid on the unit and tighten the screws. Connect AC mains power. Further requirements Once the power supply has been installed, follow the normal procedure to turn on the EM 304 MKII. 470434/A...
Page 112: Spare Parts And Consumables
Kongsberg EM 304 MKII Maintenance manual Spare parts and consumables Topics Ordering spare parts, page 113 Processing Unit - List of spare parts, page 114 Transmitter Unit - List of spare parts, page 118 Receiver Unit - List of spare parts, page 121 470434/A...
Page 113: Ordering Spare Parts
Spare parts and consumables Ordering spare parts To make the order process as short and efficient as possible, you must provide accurate information about the product, the part you need, and yourself. The following information must be provided with your order: •...
Page 114: Processing Unit - List Of Spare Parts
Kongsberg EM 304 MKII Maintenance manual Processing Unit - List of spare parts Topics Processing Unit - spare part 470574, page 114 Concurrent PP B12 CPU board - spare part 470580, page 115 PU Ethernet switch - spare part 384691, page 115 CBMF board - spare part 430675, page 116 PU Power supply - spare part 373897, page 116 PU Fan unit - spare part 385387, page 117...
Page 115: Concurrent Pp B12 Cpu Board - Spare Part 470580
Spare parts and consumables Concurrent PP B12 CPU board - spare part 470580 There is one CPU board in the Processing Unit. • Concurrent PP B12/033 CPU board Part name: • 470580 Part number: • Number in use: • Recommended number in spare: •...
Page 116: Cbmf Board - Spare Part 430675
Kongsberg EM 304 MKII Maintenance manual CBMF board - spare part 430675 There are two Compact Beamformer (CBMF) boards in the Processing Unit. This is a generic photo. The CBMF board used by the EM 304 MKII may look slightly different due to minor design changes on the protective lid and/or the front panel.
Page 117: Pu Fan Unit - Spare Part 385387
Spare parts and consumables PU Fan unit - spare part 385387 Two fan units are used in the EM 304 MKII Processing Unit for side to side cooling. • Fan unit Part name: • 385387 Part number: • Number in use: •...
Page 118: Transmitter Unit - List Of Spare Parts
Kongsberg EM 304 MKII Maintenance manual Transmitter Unit - List of spare parts Topics LPTX36 Transmitter board - spare part 446679, page 118 TX RIO board - spare part 426310, page 119 TXU Ethernet switch - spare part 338124, page 119 TXUFan unit - spare part 430443, page 120 TXU 12V Power supply - spare part 437247, page 120 TXU HV Power supply spare part 437680 , page 120...
Page 119: Tx Rio Board - Spare Part 426310
Spare parts and consumables TX RIO board - spare part 426310 There are up to 12 TX RIO boards in each Transmitter Unit. • TX RIO board Part name: • 426310 Part number: • Number in use: • Recommended number in spare: •...
Page 120: Txufan Unit - Spare Part 430443
Kongsberg EM 304 MKII Maintenance manual TXUFan unit - spare part 430443 There is one fan unit in each Transmitter Unit. • TXU Fan unit Part name: • 430443 Part number: • Number in use: • Recommended number in spare: •...
Page 121: Receiver Unit - List Of Spare Parts
Spare parts and consumables Receiver Unit - List of spare parts Topics Receiver Unit 1 degree - spare part 426631, page 121 Receiver Unit 2 degrees - spare part 426632, page 121 Receiver Unit 4 degrees - spare part 426633 , page 122 RXU Power supply - spare part 428206, page 122 Receiver Unit 1 degree - spare part 426631 The complete receiver Unit can be supplied as a spare part.
Page 122: Receiver Unit 4 Degrees - Spare Part 426633
Kongsberg EM 304 MKII Maintenance manual Related topics Receiver Unit replacement, page 101 Receiver Unit 4 degrees - spare part 426633 The complete receiver Unit can be supplied as a spare part. The number of Receiver Units used will depend on the system configuration. The number of circuit boards in the Receiver Unit will depend on the chosen transducer configuration.
Page 123: Processing Unit
Processing Unit Processing Unit Topics Processing Unit description, page 124 Processing Unit familiarization, page 124 Processing Unit front panel description, page 125 Processing Unit rear panel description, page 126 Processing Unit circuit boards and modules, page 127 CPU board, page 128 CP219 Ethernet switch, page 131 CBMF board, page 133 470434/A...
Page 124: Processing Unit Description
Kongsberg EM 304 MKII Maintenance manual Processing Unit description The EM 304 MKII Processing Unit is provided to process the signals to and from the Transmitter and Receiver Units. The EM 304 MKII Processing Unit is an industrial computer using both COTS (commercial off-the-shelf) components and custom made components.
Page 125: Processing Unit Front Panel Description
Processing Unit Processing Unit front panel description The front panel of the Processing Unit holds a mains power switch and an information display. Information display Power On/Off 470434/A...
Page 126: Processing Unit Rear Panel Description
Kongsberg EM 304 MKII Maintenance manual Processing Unit rear panel description The rear panel of the Processing Unit holds all the connectors used to communicate with external devices and the power input socket. It also holds a fuse for the power input. Fan unit The Processing Unit has two fan units for cooling purposes.
Page 127: Processing Unit Circuit Boards And Modules
Processing Unit Processing Unit circuit boards and modules In order to do the necessary tasks and meet the operational requirements, the Processing Unit is equipped with several circuit boards and modules. All the circuit boards and modules are line replaceable units (LRU). The following circuit boards and modules are used in the EM 304 MKII Processing Unit.
Page 128: Cpu Board
Kongsberg EM 304 MKII Maintenance manual CPU board Topics Introduction, page 128 Concurrent PP B12 CPU board overview, page 128 Concurrent PP B12 CPU board connectors, page 129 CPU board Concurrent PP833 overview, page 129 CPU board Concurrent PP833 connectors, page 130 Introduction There is one CPU board in each EM 304 MKII Processing Unit.
Page 129: Concurrent Pp B12 Cpu Board Connectors
Processing Unit Concurrent PP B12 CPU board connectors The Concurrent PP B12 CPU board holds two large connectors for the backplane, as well as several front mounted connectors. Console - for Kongsberg Maritime use only COM1 to COM4 - Four serial ports with RJ45 connectors. The ports can be configured to be RS-232 or RS-422 Ethernet 1 - used for communication to the Operator Station (Hydrographic Work Station)
Page 130: Cpu Board Concurrent Pp833 Connectors
Kongsberg EM 304 MKII Maintenance manual CPU board Concurrent PP833 connectors The Concurrent PP833 CPU board holds two large connectors for the backplane, as well as several front mounted connectors. Not all of these connectors are used in the EM 304 MKII. PMC/XMC1 Console - for Kongsberg Maritime use only COM1 to COM4 - Four serial ports with RJ45 connectors.
Page 131: Cp219 Ethernet Switch
Processing Unit CP219 Ethernet switch Topics Ethernet switch overview, page 131 Ethernet switch connectors, page 132 Ethernet switch overview The VadaTech CP219 board is used as an Ethernet switch in the EM 304 MKII Processing Unit. This is a generic photo. The Vadatech CP219 board used by the EM 304 MKII may look slightly different due to minor design changes on the protective lid and/or the front panel.
Page 132: Ethernet Switch Connectors
Kongsberg EM 304 MKII Maintenance manual Ethernet switch connectors The VadaTech CP219 Ethernet switch holds 10 front mounted connectors, as well as one large connector for the backplane. This is a generic photo. The Vadatech CP219 board used by the EM 304 MKII may look slightly different due to minor design changes on...
Page 133: Cbmf Board
Processing Unit CBMF board Topics CBMF board overview, page 133 CBMF board configuration, page 134 CBMF board connectors, page 135 CBMF board overview The Compact Beamformer (CBMF) board is used by the Processing Unit for beamforming and signal processing purposes. This is a generic photo.
Page 134: Cbmf Board Configuration
Kongsberg EM 304 MKII Maintenance manual CBMF board configuration The CBMF board is a generic circuit board designed for multiple applications and operational frequencies. By means of the on-board software, the links and the switches it can be configured for specific use. When a board is provided as a spare part, it is readily configured.
Page 135: Cbmf Board Connectors
Processing Unit Switches and links The CBMF board holds several switches and links. These are implemented to allow the circuit board to be used in several different configurations. The switch setting on the CBMF board has to be correct. All the switches on all the CBMF boards in the Processing Unit should be set to OFF.
Page 136: Transmitter Unit
Kongsberg EM 304 MKII Maintenance manual Transmitter Unit Topics Transmitter Unit familiarization, page 136 Transmitter Unit bottom panel description, page 138 Transmitter Unit top panel description, page 140 Transmitter Unit power supplies, page 142 RIO-P board - dip switch setting, page 143 Transmitter Unit familiarization The Transmitter Unit holds several circuit boards and two power supplies.
Page 137 Transmitter Unit Front view Bottom view Protection cover and cable clamp not shown Top view Lid not shown 470434/A...
Page 138: Transmitter Unit Bottom Panel Description
Kongsberg EM 304 MKII Maintenance manual Transmitter Unit bottom panel description All external cables are connected at the bottom of the Transmitter Unit. RIO-P board TX RIO board 1 TX RIO board 12 AC power connector Ground connector Ethernet connector Ethernet connector 470434/A...
Page 139 Transmitter Unit TX RIO board There are up to 12 TX RIO boards in each Transmitter Unit. The transducer cables connect to the TX RIO boards. The number of TX RIO boards depends on the configuration of the EM 304 MKII system. •...
Page 140: Transmitter Unit Top Panel Description
Kongsberg EM 304 MKII Maintenance manual Transmitter Unit top panel description There are only internal connections at the top of the Transmitter Unit. Ethernet switch 1 Ethernet switch 2 Ethernet switch 3 LPTX36 board 1 LPTX36 board 24 Fan unit 470434/A...
Page 141 Transmitter Unit LPTX36 Transmitter board There are up to 24 LPTX36 Transmitter boards in each Transmitter Unit. Each LPTX36 board is connected to the Ethernet switch in the Transmitter Unit. The number of LPTX36 boards depends on the configuration of the EM 304 MKII system.
Page 142: Transmitter Unit Power Supplies
Kongsberg EM 304 MKII Maintenance manual Transmitter Unit power supplies There is one 12V and one HV power supply in each Transmitter Unit. The power supplies are mounted behind the heat sinks on the sides of the Transmitter Unit. HV Power supply module The HV power is mounted on the left side when the Transmitter Unit is seen from the front.
Page 143: Rio-P Board - Dip Switch Setting
Transmitter Unit RIO-P board - dip switch setting The dip switch setting on the RIO–P board has to be correct. Transmitter Unit 1 (MASTER): All switches must be set to ON. The position of the dip switches are shown with the LED lights on the front of the RIO-P board when the board is installed and the Transmitter Unit is powered up.
Page 144: Receiver Unit
Kongsberg EM 304 MKII Maintenance manual Receiver Unit Topics Receiver Unit familiarization, page 145 Receiver Unit bottom panel description, page 146 Receiver Unit - dip switch setting, page 147 470434/A...
Page 145: Receiver Unit Familiarization
Receiver Unit Receiver Unit familiarization The EM 304 MKII Receiver Unit has all receive electronics, like control processor, amplifiers, Analog-to-Digital Converters, power supply and Ethernet interface. Cable connection, behind protection lid Lid for access to circuit boards and power supply The Receiver Unit is a small wall-mounted steel cabinet with integrated shock and vibration...
Page 146: Receiver Unit Bottom Panel Description
Kongsberg EM 304 MKII Maintenance manual Receiver Unit bottom panel description The connectors of the Receiver Unit are accessed from the bottom. The transducer cables connect at the bottom of the Receiver Unit. The number of cables depends on the chosen system configuration. 470434/A...
Page 147: Receiver Unit - Dip Switch Setting
Receiver Unit 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 Unit(s). A switch on the processing board inside the Receiver Unit is used for this. Receiver Unit 1 (MASTER): all switches must be set to OFF.
Page 148: Hydrographic Work Station
Kongsberg EM 304 MKII Maintenance manual Hydrographic Work Station Topics Hydrographic Work Station, page 148 Hydrographic Work Station, type MC330, page 149 Hydrographic Work Station The Hydrographic Work Station is the operator station of the EM 304 MKII system. A dedicated maritime computer is provided. It is set up with all necessary software. The Hydrographic Work Station is normally mounted near the operator work space.
Page 149: Hydrographic Work Station, Type Mc330
Hydrographic Work Station Hydrographic Work Station, type MC330 AC power cable connection Network cable to the Multibeam Echo Sounder Display port connectors Moving arm to guide the cables Switch for network cables. Not for cable connected to Remove this screw to change removable SSD-drive. USB-HUB for mouse and keyboard connectors 470434/A...
Page 150: Drawing File
Kongsberg EM 304 MKII Maintenance manual Drawing file The Drawing file are found in the EM 304 MKII Installation Manual 470434/A...
Page 151: Technical Specifications
Technical specifications Technical specifications The Technical specifications are found in the EM 304 MKII Installation Manual 470434/A...
Page 152: Cable Layout And Interconnections
Kongsberg EM 304 MKII Maintenance manual Cable layout and interconnections The Cable layout and interconnections are found in the EM 304 MKII Installation Manual 470434/A...
Page 153: Equipment Handling
Equipment handling 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 154: Transporting Kongsberg Maritime Equipment
Kongsberg EM 304 MKII Maintenance manual Transporting Kongsberg Maritime equipment Unless otherwise stated in the accompanying documentation, electronic, electromechanical and mechanical units supplied by Kongsberg Maritime can be only transported using methods approved for delicate and fragile equipment. Prerequisites Transportation methods approved for delicate equipment includes transportation by road, rail, air or sea.
Page 155: Lifting Units And Transportation Boxes
Equipment handling 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. Persons using the lifting equipment must be skilled and have the relevant certificate(s).
Page 156 Kongsberg EM 304 MKII Maintenance manual 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. 470434/A...
Page 157: Inspection Of Units And Transportation Boxes After Arrival
Equipment handling Inspection of units and transportation boxes after arrival A visual inspection must be done immediately after the box(es) have arrived at their destination. Prerequisites If you suspect that the equipment has been damaged during the transport, request that a representative of the carrier is present during the inspection.
Page 158: Specifications For Storage Prior To Installation Or Use
Kongsberg EM 304 MKII Maintenance manual 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 159 Equipment handling 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 160: Unpacking Instructions
Kongsberg EM 304 MKII Maintenance manual Unpacking instructions Prior to installation or use, electronic, electromechanical and mechanical units must be unpacked from their transport boxes. It is important that this unpacking is done according to the relevant instructions, and without inflicting damage to the equipment. Topics Unpacking standard parts and units, page 160 Unpacking mechanical units, page 161...
Page 161: Unpacking Mechanical Units
Equipment handling 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 162: Unpacking Electronic And Electromechanical Units
Kongsberg EM 304 MKII Maintenance manual 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 unpacking is done without inflicting damage to the equipment. Context Electronic and electromechanical units are normally wrapped in clear antistatic plastic bags.
Page 163: Unpacking Transducers
Equipment handling 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. Context Transducers may be supplied mounted to a hull unit (if any), or packed separately.
Page 164 Kongsberg EM 304 MKII Maintenance manual Observe the handling rules for transducers. 470434/A...
Page 165: Specifications For Storage After Unpacking
Equipment handling Specifications for storage after unpacking The unit must whenever possible be stored in its original transportation crate until ready for installation. General specifications During storage, each box must not be used for any purpose for which it was not intended (work platform, table, steps etc.).
Page 166 Kongsberg EM 304 MKII Maintenance manual Note Unless otherwise specified, transducers and hydrophones must not be stored in temperatures below −10°C and above +50°C. 470434/A...
Page 167 Index Index 385387 introduction ..........23 fan unit ..........117 RX channels ..........30 RX noise level..........32 RX noise spectrum........33 RX Unit test ..........26 RX-CBMF link........... 29 about SW date and version........34 document downloads ........7 System information........
Page 168 Kongsberg EM 304 MKII Maintenance manual description familiarization BIST (Built-In Self test) dialog box....19 Processing Unit ........124 bottom panel Receiver Unit ......146 Receiver Unit........... 145 bottom panel Transmitter Unit ....... 138 Transmitter Unit........136 CBMF board..........133 fan unit Concurrent PP B12 CPU board ......
Page 169 Index transport Kongsberg Maritime equipment..154 transportation boxes ........155 unpack a hydrophone........163 unit ............155 unpack a mechanical unit ......161 links unpack a sonar head ........163 CBMF board..........134 unpack a transducer........163 LPTX36 Transmitter board unpack an electronic or electromechanical replacing ..........
Page 170 Kongsberg EM 304 MKII Maintenance manual LPTX36 Transmitter board......118 replacing LPTX36 board........ 73 PU power supply........116 replacing power supply RXU ......106 Receiver Unit 1 degree........ 121 replacing power supply TXU 12V..... 89 Receiver Unit 2 degrees......121–122 replacing power supply TXU HV .....
Page 171 Index rear panel description removing ..........102 Processing Unit ........126 replacing ..........101 Receiver Unit RXU power supply bottom panel description......146 spare part..........122 brief description.......... 14 dip switch setting ........147 familiarization .......... 145 identification..........147 sockets installing ..........
Page 172 Kongsberg EM 304 MKII Maintenance manual troubleshooting........... 18 units............157 top panel description Transmitter Unit........140 transducer anti-fouling paints ........41 website brief description.......... 13 download documents ........7 unpacking ..........163 transducer handling important rules ........... 36 Transmitter board LPTX36 spare part..........

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