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A – Operating Theory

DPN 402196 Issue 4.1

© Teledyne TSS

A- 11

A.2.7 Range Determination

Once the seawater signal has been removed, the target voltage is interpreted to give the distance
between the coil and the target. This voltage falls off according to an approximate sixth root law. The
voltage is first divided by the target scaling value. The exact algorithm used to determine range is
beyond the scope of this manual, since correcting for the exact nature of the coil response is complex.

When the target is close to the coils, all three coils are used to determine the position. The differences
between the port and centre, and starboard and centre coils are taken then used to compute range. If
the sum of these differences is less than the threshold, or any coil is less than the threshold, then only
two coils are used to make the calculation. The two coil calculation is also able to adapt to the position
of the target, using the centre and one other coil at larger lateral ranges.

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Summary of Contents for 440

Page 1: ...23 216061 24 hr Customer Support 44 0 7899 665603 e mail tsssales teledyne com COMPANY WITH MANAGEMENT SYSTEMS CERTIFIED BY DNV ISO 9001 ISO 14001 440 Pipe and Cable Survey System Manual Related Customer Package Part No s P N 500268 440 Complete System 110V AL P N 500269 440 Complete System 230V AL P N 500270 440 Complete System 110V SS P N 500271 440 Complete System 230V SS ...

Page 2: ...The information in this manual is subject to change without notice and does not represent a commitment on the part of Teledyne TSS ...

Page 3: ...ay Computer SDC 10 2 3 2 3 Sub sea Components 2 5 2 3 1 Power Supply Unit 2 5 2 3 2 Sub sea Electronics Pod 2 6 2 3 3 Search coils 2 7 2 3 4 Altimeter 2 7 3 Physical Installation 3 1 3 1 Surface Display Computer SDC Installation 3 1 3 1 1 Sub sea Installation 3 3 3 1 2 SEP and PSU 3 3 3 1 3 Coil Array 3 5 3 1 3 1 Search coil Configuration 3 6 3 1 3 2 Positioning the Search coils 3 6 3 1 3 3 Coil A...

Page 4: ... 1 Power on Procedure 5 1 5 2 Initial Configuration 5 3 5 2 1 Sub Sea Electronics Pod 5 3 5 2 2 Communication ports 5 4 5 2 3 System Parameters 5 6 5 2 3 1 Target Scaling 5 6 5 2 3 2 Threshold 5 7 5 2 3 3 Seawater Compensation 5 7 5 2 4 Print Configuration 5 9 5 3 Operating DeepView for Windows 5 10 5 3 1 Menu commands 5 11 5 3 2 View Menu 5 14 5 3 2 1 Run Window 5 14 5 3 2 2 Toggle Height Scale 5...

Page 5: ...pth rating 6 4 6 2 1 2 Coil Installation 6 5 6 2 2 Electrical 6 7 6 2 2 1 Power 6 7 6 2 2 2 Cables Connectors and Coils 6 7 6 3 Survey Operations 6 7 6 3 1 Establishing the Survey Configuration 6 10 6 3 1 1 Target Scaling 6 10 6 3 1 2 Threshold 6 10 6 3 1 3 External Logging Format 6 11 6 3 1 4 Serial Port Parameters 6 11 6 3 1 5 Background Compensation Reminder 6 11 6 3 1 6 Altimeter Parameters 6 ...

Page 6: ...6 5 OSEL Bathymetric System 6 37 6 6 6 Tritech SeaKing Bathy 704 6 38 7 Operational Considerations 7 1 7 1 Operating Performance 7 1 7 2 Sources of Error 7 1 7 2 1 ROV Handling 7 2 7 2 1 1 ROV Position over the Target 7 2 7 2 1 2 Trim 7 3 7 2 1 3 Skew 7 4 7 2 1 4 Altimeter Positioning 7 4 7 2 2 Electrical Interference 7 6 7 2 2 1 ROV Body 7 6 7 2 2 2 Power carrying Cables 7 7 7 2 2 3 Impressed cur...

Page 7: ... Identification 9 9 9 3 1 Fault on Single Channel Only 9 11 9 3 2 Current Loop Communications Failure 9 13 9 3 3 Altimeter failure 9 17 9 3 4 Unexpected Signal Variation During Normal Operation 9 20 10 System Drawings 10 1 10 1 Electrical Drawings 10 1 10 2 Mechanical Drawings 10 16 A Operating Theory A 1 A 1 Pulse Induction A 1 A 2 Waveform Measurement A 2 A 2 1 Timing A 3 A 2 2 Derivation of Sig...

Page 8: ...4 1 Search coils B 5 B 1 5 Sub sea Pods B 6 B 1 6 Electrical Connection B 6 B 1 6 1 System Configuration B 9 B 1 6 2 System Operation B 9 B 1 6 3 Forward Search Window B 10 B 1 7 Power Supply Requirement B 11 B 2 Training B 11 C Altimeter C 1 D Reference D 1 D 1 Target Scaling Procedure D 3 D 2 Target Scaling Results D 5 D 3 Performance Envelope Results D 7 D 4 Survey Details D 9 D 5 System Config...

Page 9: ...4 14 Figure 4 6 Removing the transit case lid 4 17 Figure 4 7 SDC10 fixings to angled bracket 4 18 Figure 4 8 Removing the rear enclosure fixings 4 18 Figure 5 1 System Configuration Wizard 5 3 Figure 5 2 System Configuration Wizard Summary 5 5 Figure 5 3 System Parameters 5 6 Figure 5 4 Print Configuration 5 9 Figure 5 5 DeepView Run Window 5 14 Figure 5 6 Scope Window 5 17 Figure 5 7 System Erro...

Page 10: ...ications failure CHART 1 9 13 Figure 9 7 Communications failure CHART 2 9 14 Figure 9 8 Communications failure CHART 3 9 15 Figure 9 9 Communications failure CHART 4 9 16 Figure 9 10 Communications failure CHART 5 9 17 Figure 9 11 Altimeter failure CHART 1 9 18 Figure 9 12 Altimeter failure CHART 2 9 19 Figure 9 13 Signal shifts CHART 1 9 20 Figure 9 14 Signal shifts CHART 2 9 21 Figure 9 15 Signa...

Page 11: ...imeter Cable Assembly 3 0m standard 10 31 Figure 10 30 500268 1 440 Pipe and Cable Survey System Complete Assembly 10 32 Figure A 1 Pulse induction waveforms not to scale A 2 Figure A 2 Timing relationship for a single cycle of measurement A 3 Figure A 3 Sequence of consecutive measurement cycles A 4 Figure A 4 Seawater signal A 5 Figure A 5 Perfect lift with the results passing through the origin...

Page 12: ...List of Figures x Teledyne TSS DPN 402196 Issue 4 1 ...

Page 13: ...tem Defaults 5 24 Table 5 7 DeepView Toolbar 5 27 Table 5 8 Run Window Toolbar 5 28 Table 5 9 Replay toolbar function keys 5 30 Table 6 1 External Co ordinates and signals format cm resolution 6 23 Table 6 2 External Co ordinates and signals format mm resolution 6 25 Table 6 3 QC check code meaning External logging format 6 26 Table 6 4 External Co ordinates format 6 28 Table 6 5 Timestamped Coord...

Page 14: ... TSS DPN 402196 Issue 4 1 Table 10 1 Electrical Drawings 10 1 Table 10 2 Mechanical drawings 10 16 Table B 1 Components of the Dualtrack System B 4 Table C 1 Benthos PSA 916 part numbers C 1 Table C 2 TSS ALT 250 part numbers C 1 ...

Page 15: ...drawings into Drawings section 1 5 June 2006 Changed default comms to RS232 1 4 February 2006 New SDC9 descriptions and relative modifications 1 3 October 2005 Updated External Output descriptions for DV4 0 3 and modified explana tion of ghosting Includes corporate rebranding 1 2 June 2005 Included Background Noise Profile references updated Run View display to include QC code external o p to incl...

Page 16: ...Revision History xiv Teledyne TSS DPN 402196 Issue 4 1 1 0 Feb 19 2003 First Issue Issue No Date Details ...

Page 17: ...op of the target and the centre line of the coil array Positive measurements indicate a target to starboard of the centre line PSU Sub sea power supply pod The depth rated unit that accepts an electrical supply from the ROV and produces the conditioned and stabilised DC supplies used by the SEP ROV Remotely operated vehicle Any form of sub sea or surface vehicle supporting the 440 System during su...

Page 18: ...Glossary xvi Teledyne TSS DPN 402196 Issue 4 1 ...

Page 19: ... faster ROVs The measurement technology used by the System also allows it to operate out of water with no degradation in performance range or accuracy You may therefore use the 440 System for land based or amphibious survey applications This System Manual contains full installation and operating instructions and is an important part of the 440 System You should ensure the Manual remains easily ava...

Page 20: ...sea pods Standard SDC logging output format Teledyne TSS support Connector pin outs voltages and protocols identical 1 2 Conventions used This manual uses the following conventions that signal important Warnings Cautions and Notes WARNING A Warning indicates the risk of death or serious injury to personnel CAUTION A Caution indicates the risk of injury to personnel or damage to equipment or loss o...

Page 21: ... and its software to provide the best performance for use in pipe and cable survey operations This Manual describes the standard 440 System You should consult Teledyne TSS if you need to use the System within an alterna tive application where a non standard configuration might be necessary The Teledyne TSS 440 System consists of a surface control and display computer and the depth rated components...

Page 22: ...for the SDC and DeepView for Windows to generate accurate survey data using a powerful algorithm developed especially for this application 1 4 Principle of Operation The Teledyne TSS 440 Pipe and Cable Survey System relies on the principle of Pulse Induction to detect the presence of a target and to measure the range of that target from each of three search coils Using an adaptive algorithm the Sy...

Page 23: ...ity or fitness for a particular purpose The foregoing states the entire liability of Teledyne TSS Ltd with respect to the products described herein Contact Teledyne TSS Ltd for information if you require further cover beyond the warranty period NOTE To ship the 440 Pipe and Cable Survey System between installation sites or to return the product to Teledyne TSS Ltd or an authorised distributor for ...

Page 24: ...1 Introduction 1 6 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 25: ...t you must interconnect properly before the System will work Figure 2 1 shows a typical stand alone configuration for the 440 System that has the SDC installed on a surface vessel and the sub sea components mounted on the ROV Table 2 1 identifies the individual components of the installation Optionally you may use the 440 System as part of a Dualtrack installation In this mode a single SDC control...

Page 26: ... occurred during transportation Table 2 1 Components of the 440 Pipe and Cable Survey System Item Description A Surface display computer SDC provides 19 rack mountable Panel PC with touch screen enabled TFT LCD 1280 x 1024 resolution VESA mounted comms enclosure containing Current Loop comms video overlay and analogue output interfaces DeepView for Windows display and logging software pre installe...

Page 27: ...e 2 2 Surface Display Computer SDC10 overview The SDC10 comprises a ruggedised rack mountable 19 Windows Panel PC with a VESA mounted comms enclosure encapsulating the power communication video overlay and analogue output interfaces The Panel PC provides two front mounted USB ports to attach external equipment All other connections are clearly labelled on the comms enclosure mounted to the rear of...

Page 28: ...ly steer an ROV using the lateral offset survey information The SDC is mounted in a purpose designed shock protecting transit case The design of the case allows you to operate the SDC directly from it after removing the case lid Alternatively you may remove the SDC from the transit case and mount it in a 19 inch instrument rack if this arrangement is more appropriate See section 3 1 Surface Displa...

Page 29: ...the following component parts A Sub sea Electronics Pod SEP A Sub sea Power Supply Unit PSU A coil array with three Teledyne TSS search coils See section 3 1 3 3 Coil Assembly and Installation on page 3 8 for instructions to install the coils Frame components to mount the coils onto the ROV A sub sea altimeter Cables to interconnect the sub sea components of the 440 System and to connect them to t...

Page 30: ...he SEP functions The SEP is a sealed unit with six ports On one end cap Power comms This port accepts the 12 way connector from the PSU carrying stabilised and conditioned DC supplies and the bi directional communication signals Altimeter You may connect the Teledyne TSS or Teledyne Benthos sub sea altimeter directly to this port The port provides DC power to operate these types of altimeter and a...

Page 31: ...3 13 for instructions to install the altimeter on the ROV and section 4 1 6 Sub sea Altimeter on page 4 6 for instructions to connect it directly to the SEP NOTE You should remember that an altimeter measures to a point on the seabed directly beneath its transducer face This single point measurement may not be the same as the local mean seabed level This means that an uneven seabed topography migh...

Page 32: ...2 System Overview 2 8 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 33: ...ial damage to the SDC make certain it has sufficient ventilation to dissipate the heat that it generates during normal operation You might damage the SDC if you allow it to overheat To operate the SDC inside its transit case release and remove the lid of the transit case to allow effective ventilation and heat dissipation If you mount the SDC in a 19 inch instrument rack you must allow a minimum 3...

Page 34: ...ation from transit case Figure 3 1 SDC10 transit case lid removal For temporary installations operation from the transit case is probably the most suitable method Follow the instructions below to correctly install the SDC10 1 Verify the installation location SDC allows easy access to the touch screen display and allows the user to see the screen easily while operating the ROV 2 Open the four fixin...

Page 35: ...tch Settings beginning on page 4 17 for instructions to change the analogue output settings 3 1 1 Sub sea Installation The care that you take when you install the sub sea components of the 440 System will have a significant influence on the accuracy of survey data Read the following instructions carefully and ensure that you have all the necessary parts and tools available before you attempt to in...

Page 36: ...ounting blocks each have machined slots that allow you to strap the complete housing and block assembly firmly to the ROV frame Stainless steel strapping is ideal for this purpose see Figure 3 3 It is safe to mount the SEP and the PSU in any orientation Mount the housings according to the following guidelines Eliminate any possibility of snagging or damage to the housings by installing them at a p...

Page 37: ...st completely excluded therefore the performance of the sys tem is limited mainly by the stability of the background compensation values see section 6 2 2 3 Background Compensation on page 6 22 The background compensation values must be absolutely stable and repeatable if good quality survey information is to be obtained The coils must be mounted a sufficient distance from the ROV and clamped tigh...

Page 38: ...following paragraphs for an explanation of these factors 1 Coil separation distance This is the distance between the coils and the body of the ROV after installation 2 Mounting position Consider whether you will mount the coils on the front or the rear of the ROV 3 Height of coils This is the vertical distance between the coils and the lowest point on the ROV Mount the coils so they are parallel w...

Page 39: ...st installations a coil sepa ration distance of between 0 75 and 1 2 metres will usually achieve this Loose metalwork on the ROV can cause changing eddy currents and hence changing background compensation levels as the vehicle lifts of the seabed This is easily mistaken for a problem with the seawater rejection It is best cured by moving the coils further away from the ROV Fixing any loose metalwo...

Page 40: ...w down to extend their operating range and the need to protect them from damage by maintaining a safe distance from the seabed There is a danger that signal saturation may occur when a large target is very close to the coil array When surveying such a target therefore select a higher mounting position on the ROV Make certain you mount the coils so they are parallel with the horizontal axis of the ...

Page 41: ...of pre drilled nylon beams to support the coils on the ROV Figure 3 5 shows each type of nylon supporting beam Two coil mounting strips Two outriggers Two tie bars Figure 3 5 Components of the coil frame Figure 3 6 shows how to construct the coil frame 2160mm 2130mm 1290mm 240mm 390mm 390mm 240mm 870mm 870mm 900mm 900mm 2130mm Tie Bar Mounting Strip Outrigger 2160mm ...

Page 42: ...mportant for accurate readings and continued functionality that the Coils are not bent and that the mounting frame is rigid Attach the coil frame to the ROV To construct the coil frame and assemble the coils to the ROV you will need the following facilities components and items All the components and fixings of the coil frame supplied by Teledyne TSS Stainless steel bolts or U bolts to fix the coi...

Page 43: ...ecautions explained in section 3 1 3 2 Positioning the Search coils on page 3 6 Do not fully tighten the nylon fixing nuts until you have completed all the assembly work on the sub sea installation 1 Place the coils on the deck near the ROV Arrange the coils so that their potting compound is on the top and all their connectors face towards the ROV There should be a 5 10mm gap between the port and ...

Page 44: ... assemble the frame make certain you do not place excessive mechani cal stress on any of the fixing studs CAUTION Take care to protect the coils when you drill holes in the frame components Do not drill holes into any part of the coils Do not machine the coils in any way 5 Use four lengths of nylon stud and attach the coil array to the two outrigger bars as shown in Figure 3 6 b Support the coils ...

Page 45: ...SDC these readings would show entirely different measurements for target cover The magnitude of these errors will vary according to the seabed topography and the relative positions of the altimeter and the coil array Note that it is the position of the altimeter that causes these errors Measurements of vertical range made by the 440 System will retain their accuracy under all normal conditions NOT...

Page 46: ...be less than 1000µV for standard coil values and 7500µV for early coil values to allow successful operation Usually this requires a separation distance of 0 75 to 1 2 metres between the coil array and the ROV body If you intend to install the 440 System on the same ROV as a Teledyne TSS 350 or 350 Pow ertrack System follow the instructions and recommendations concerning coil installation in Append...

Page 47: ...mount it onto the ROV NOTE The SDC provided with the 440 System is provided with Windows 7 DeepView for Windows can be installed on an additional machine but Teledyne TSS stress that the operating system must have a minimum specification of Windows XP The specification of the SDC provided can be found in Section 8 System Specifica tions beginning on page 8 1 This should be used as a guideline if y...

Page 48: ...The PSU accepts AC power from the ROV electrical distribution system through the ROV tail The maximum current drawn from the supply is approximately 2 8A at 100V to 120V As an option Tele dyne TSS can supply a PSU that accepts AC power at 230V instead E Connection between the PSU and the SEP is through a single cable The cable has a 12 way connector that connects to the SEP F The SEP accepts power...

Page 49: ...m 1 Keep both the connector and socket free from debris and salt build up 2 Use warm soapy water to wash the connectors and then rinse them with clean fresh water Do not use any solvents on the connectors Allow the connectors to dry thoroughly in air before you reassemble them 3 Lubricate the mating face of the connectors with a very light spray of 3M Silicone Oil or Dow Corning 111 valve lubrican...

Page 50: ... clean and care for the connectors CAUTION It is very important to provide a good ground connection on pin number 2 of the cable A poor or a missing connection will severely degrade the performance of the 440 System You must make all connections to the ROV using waterproof connectors or splices of good quality 4 1 3 1 Power Requirement The standard PSU operates from an AC electrical supply in the ...

Page 51: ...llation inspect the pins and receptacles of all connectors for signs of damage contamination or corrosion Follow the instructions in section 4 1 2 Care of Sub sea Connectors on page 4 3 to clean and care for the connectors Tighten the connector locking collars by hand only do not overtighten these connectors 4 1 5 Search coils CAUTION You must fit a blanking plug to the unused channel on the SEP T...

Page 52: ...starboard coil to SEP Channel 1 Connect the centre coil to SEP Channel 2 Connect the port coil to SEP Channel 3 Make certain you fit the supplied blanking plug to SEP Channel 4 to protect it from contact with sea water NOTE The above coil to channel relationship is valid both for front and for rear mounting coil arrangements on the ROV 4 1 6 Sub sea Altimeter CAUTION If you do not use the Altimete...

Page 53: ...nection to the SDC Use this method to connect all other types of altimeter compatible for use with the 440 System These altimeters use RS232 communications To send their signals through the umbilical you must add them to the ROV multiplex unit and extract them at the surface You must also provide a separate power supply for the altimeter Generally these types of altimeter have different data forma...

Page 54: ...nted Comms Module attached to the rear of the Panel PC They are located on the top face of the Comms Module making them easily accessible during System installation Figure 4 2 SDC Rear comms module with key to ports 4 2 1 Power Connection Connect AC electrical power to the SDC through the 3 core electrical supply cable and standard 3 pin IEC electrical inlet The SDC has an auto ranging power suppl...

Page 55: ...e reliable communications through the umbilical select a twisted pair that has the following characteristics You will need to reconfigure the SDC and the SEP to use this communication method See section 4 2 2 1 Alternative Communication Methods on page 4 11 for instructions to do this 4 wire 20mA digital current loop You should select this method when the umbilical link to the ROV is longer than 1...

Page 56: ...C COMMS FROM SEP port and open tails for connection to the umbilical at a junction box Previous versions of the SDC required a jumper cable to be fitted between the 15 way D Type and COM1 of the SDC However the SDC10 internally connects the 15 way D Type to COM1 and removes the requirement for the jumper cable Table 4 5 Power and Communications cable 2 wire current loop connections SEP Power Comms...

Page 57: ...If required contact Teledyne TSS for advice for instructions relating to older versions of the SDC The standard communication link between the SDC and the sub sea installations of the 440 System uses RS232 communications This method of communication is only suitable for use with umbilical cables up to 15m To configure the 440 System to use an alternative communication method you must change link s...

Page 58: ...Figure 4 3 carries the Analogue Board the Driver Board and the Main Board The Main Board is the largest of the three Figure 4 3 SEPcard support block The Main Board includes two plug in DIL headers LK4 and LK5 Figure 4 4 shows the location of these links on the Main Board To change the communication setting used by the SEP you must change the plug in headers in LK4 and LK5 Figure 4 4 Link location...

Page 59: ...ave become bent or damaged and that all are inserted fully into the socket Each of the headers has a different Teledyne TSS part number and establishes a different communications protocol You may order a complete set of SEP headers from Teledyne TSS if you need to change the communication method Table 4 8 lists the part numbers for the SEP headers Once you have set both links follow the instructio...

Page 60: ...quired position see Figure 4 2 above Figure 4 5 Comms selector switch positions The available switch positions are shown in Figure 4 54 5 and described in the table below After you have changed the communication method you must run the configuration wizard from DeepView for Windows to re establish comms or comms errors will be generated NOTE You must perform a communication check as part of the pr...

Page 61: ... replay them subsequently using the graphical display facilities of the SDC You cannot replay external logging files through the SDC in this way NOTE The internal logging facility on the 440 System is for your convenience and for test purposes only Do not use it as the principal survey logging tool Unless otherwise stated this Manual describes the external logging facility of the 440 System See se...

Page 62: ...this signal to a standard video monitor using 75 screened cable The output can drive a single monitor or multiple monitors if you add a suitable video drive amplifier 4 2 5 Interface to Analogue Outputs NOTE The analogue output has been redesigned for the SDC10 On previous versions of the SDC the analogue output was not included as part of the customer pack age However the SDC10 includes the analo...

Page 63: ...he Panel PC These switches are not accessible during normal operation To access the DIP switches the Comms Enclosure needs to be removed from the Panel PC The following steps outline how to correctly remove the Comms Enclosure NOTE The external Comms Enclosure has connections from the Panel PC routed through the underside of the enclosure Take care removing the enclosure from the Panel PC mounts e...

Page 64: ...g this procedure 4 Remove the 4 x fixings attaching the rear enclosure to the Panel PC Figure 4 8 Removing the rear enclosure fixings 5 Carefully remove the comms enclosure from the fixing bracket Ensure the cables connected to the underside of the enclosure are not damaged 6 Table 4 10 outlines the function of each the DIP switches Configure the switches to meet installation requirements Table 4 ...

Page 65: ...t case fit the 8 x fixings attaching the Panel PC to the angled bracket secured to the transit case base 10 Verify the SDC is operating as required SW2 CH2 gain OFF CH2 2V m ON CH2 1V m SW3 Quality QLTY OFF 12V ON 5V SW4 CH1 Polarity OFF Reverse polarity ON Normal polarity SW1 CH2 Polarity OFF Reverse polarity ON Normal polarity SW2 Input Baud Rate OFF 9600 ON 4800 Table 4 10 Analogue output DIP s...

Page 66: ...4 Electrical Installation 4 20 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 67: ... Windows operating environment Although you may use all the commands using the Panel PC s touch screen you may prefer to operate the software using either a mouse or keyboard These can be connected to the SDC using the USB ports located on the Panel PC front panel In these instructions key press sequences appear in square brackets For example press SHIFT F4 means to press the Shift key and the fun...

Page 68: ...nd power is applied the Rear Comms Enclosure will receive power but the Panel PC will not power up This can be identified by the Rear Comms Enclosure fan being acti vated but the Panel PC remaining inactive Check that you have connected an AC electrical supply of the correct rating to the three pin IEC mains inlet on the SDC see section 4 2 1 Power Connection on page 4 8 for instructions to connec...

Page 69: ... 1 Sub Sea Electronics Pod Define whether there is no SEP a 440 or whether it is part of a Dualtrack System This setting determines the data format that DeepView for Windows expects to receive from the sub sea installation and sets the style of Run Window that the software will use to display the System measurements There are three options for setting the SEP type No SEP Use this option to operate...

Page 70: ...n the rear connector panel of the SDC is used to connect the SDC to a separate user supplied data logger You should use a data logger to record the survey measurements acquired by the 440 System See section 5 3 3 3 External Output on page 5 23 for instructions to configure DeepView for data logging and to set appropriate com munication parameters COM5 is used by the SDC to communicate with the vid...

Page 71: ... the System Configuration Wizard will be run when DeepView for Windows starts If the box is not checked and if a configuration file is available the configuration file will be used to configure DeepView for Windows DeepView stores the configuration details automatically in an initialisation file when DeepView is closing down This allows the System to establish the same configuration when you next ...

Page 72: ...ive part of the target Do not include any non con ductive coating in the measurement of diameter This value together with the target scaling is used to compute range Weight coating Enter the thickness of any non conductive weight coating that surrounds the target DeepView for Windows will allow for this thickness when it displays measurements of target co ordinates DeepView for Windows uses a spec...

Page 73: ...it is necessary for the software to know the conductivity of the seawater surrounding the coils and ROV during the survey The conductivity is strongly determined by the water temperature and for convenience this has been grouped into bands of 0 10oC 10 25oC and 25oC Select a suitable band This assures that salinity is between 30 and 33 psu in areas where salinity is high e g Mediterranean or river...

Page 74: ... is interpreted to give the distance between the coil and the target This voltage falls off according to an approximate sixth root law The voltage is first divided by the target scaling value The exact algorithm used to determine range is beyond the scope of this manual since correcting for the exact nature of the coil response is complex ...

Page 75: ...them from this application An example of the print configuration via Windows notepad Figure 5 4 Print Configuration NOTE The ability to print the configuration is an important feature of DeepView It allows you to create a permanent written record of the configuration to supplement the survey logs Full analysis and post processing of the raw data can be effective only if you retain a record of the ...

Page 76: ...ent If necessary refer to a relevant Windows user guide for instructions to use Windows This sub section explains how to use the software commands and tools during a survey The instructions refer to the Run Window and to the various secondary windows described throughout this section DeepView includes an on line Help structure that summarises the advice and instructions included here There is also...

Page 77: ...tart of logging and updates this at intervals of one minute It obtains this information from the SDC system clock You may add short com ments up to 40 characters in length to the internal logged record by pressing the annotate button on the Run Display screen The SDC time tags and includes the comments in the internal log The external logging record is unaffected by these annotations Close Log Fil...

Page 78: ...dow on a 350 system before you can access this command using either the menu or the toolbar button The normal condition is for the Scope and Spectrum Analyser Window to be closed when you start DeepView for Windows Note that the data string transmitted from the SEP to the SDC extends significantly in length when you open the Scope and Spec trum Analyser Window This will reduce the data update rate...

Page 79: ...s screen that you have viewed when opening up the software Use of this option will result in all of the parameters being reset to default Window Cascade ALT W C Use this command to arrange the various operating windows so that they overlap but with their title bars visible This does not affect the Diagnos tics Window or the Target Tracking Window Tile Horizontally ALT W H Use this command to arran...

Page 80: ... Title Bar shows the names of the program and of the window The right hand end includes the standard buttons to minimise maximise and close the main DeepView window The Menu Bar includes the five menu headers described under section 5 3 1 Menu com mands on page 5 11 To access the menu and sub menu commands click on them or use the appropriate hot key combination ALT underlined hot key characters T...

Page 81: ...of centimetres The solid white line J that separates the rear elevation pane from the snail trail pane described below has gradations every 1m or 5m depending on the swath width Two broken red lines K extend down the window at 2m of lateral offset These show the lateral limits of a quality control envelope applied by DeepView To support efficient post processing on data acquired by the 440 System ...

Page 82: ...inues to move to the left and right as the lateral offset of the target changes while the remainder of the line scrolls vertically downwards in a waterfall style of display Segments of the line P can have any of three colours If the System receives no altitude information a good target signal will always appears as a light grey line If a target scaling value greater than 2000uV is used and the cen...

Page 83: ...pe Window The above screen shows an example of the 440 Oscilloscope Window with panels for the three active channels Port Centre and Starboard During operation each of these display panels shows the signal voltage measured on their respective channels against a horizontal time scale and a vertical scale of percentage of full scale Each of the scope panels shows the three measurement windows define...

Page 84: ... displays a list of all errors and events reported by the 440 System The list includes cleared and uncleared errors The window can include up to 600 lines of text with a scroll bar that allows you to search through the list When the list includes 600 lines of text DeepView for Windows will delete the oldest message in the list to provide room for any new ones Figure 5 7 System Errors window The li...

Page 85: ... client area will show data packets from this device instead Figure 5 8 Terminal window There is also a drop down box that allows you to select the active serial device from among those available This box includes the option to use the Terminal Window as a dumb terminal if necessary also accessible by pressing ALT Down arrow then release ALT Table 5 3 Terminal Window toolbar Button Function Explan...

Page 86: ...Menu 5 3 3 1 System parameters See section 5 2 3 System Parameters on page 5 6 5 3 3 2 Altimeter The Altimeter option allows you to change the altimeter configuration for specific installations and to view data transmitted by an altimeter connected directly to the SEP To edit these settings select Configuration Altimeter To view data transmitted by an altimeter connected to an SDC serial communica...

Page 87: ... until the altimeter is immersed in water Table 5 4 Altimeter configuration parameters Parameter Options Altimeter Disabled Fixed height Sub sea TSS PSA 900 PSA 900 depth PSA 9000 PSA 916 Ulvertech Bathy Simrad UK90 OSEL Bathy SeaKing Bathy 704 Hyspec 305 Altimeter Comms Altimeter connected via Sub sea Electronics Pod for altimeters marked and above Altimeter connected direct to a COM port for alt...

Page 88: ...5 Operating Software 5 22 Teledyne TSS DPN 402196 Issue 4 1 Figure 5 10 Altimeter Test ...

Page 89: ...rdi nate information See section 6 3 7 Data Logging on page 6 19 for a description of these data for mats External Data Output Rate The SDC can transmit data to the data logger at either four records or one record per sec ond The default setting is four records per second You should consider the available storage space and the desired linear track resolution for the survey before you decide betwee...

Page 90: ...heir default states see Table 5 6 Table 5 6 Factory System Defaults Parameter Default Value Target Scaling 1277uV Target Weight Coating 1cm Target Diameter 27cm Weight Coating 0cm Pipe Coefficient 1 Background compensation interval 30 mins Video Overlay Parameters COM5 9600 8 n 2 External Output Comms Parameters COM3 9600 8 n 2 External Output Packet Coords signal 4 second Altimeter Comms Paramete...

Page 91: ...ser via the Video Overlay Configuration The Video Overlay Setup menu is available via the Configuration options and provides the options illustrated below in Figure 5 12 The video overlay has two possible modes The first mode is where a copy of the SDC screen the Runview is overlaid on the video output This is selected with the Duplicate Runview checkbox The other mode is where selected informatio...

Page 92: ...al will be displayed behind this survey information where the black background is currently shown l Figure 5 13 Video Overlay Signal The Overlay feature can be enabled disabled either from the View options or by using the icon on the toolbar Figure 5 14 Video Overlay Enable Disable button 5 3 4 Toolbars Table 5 7 shows and explains the command buttons on the DeepView for Windows toolbar You may ac...

Page 93: ... same function as the View Run Window command described above The button has a toggle action so that the window will open and close with alternate presses The normal condition is for the Run Window to be closed when you start to use DeepView Dualtrack using 440 SEP data This button is only visible when in Dualtrack mode and the 440 SEP has been enabled Pressing the 350 icon enables the 350 or 350 ...

Page 94: ...n key on the SDC As a simple memory aid press the function key F1 to see the help dialog panel shown in Figure 5 15 Note that this dialog panel is NOT part of the DeepView for Windows on line Help support Press any key to close the help dialog panel Table 5 8 Run Window Toolbar Button Function Explanation Annotations This button opens the text annotation feature available when you are cre ating an...

Page 95: ...tte 4 Exit Windows and power off the SDC Select Start Shut Down then choose Shut down and press OK to close the Windows operating environment Wait while Windows closes and then power off the SDC when the screen tells you that it is safe to do so CAUTION DO NOT power off the SDC until it is safe to do so otherwise Windows will log the fact that it was incorrectly closed This will cause the SDC to e...

Page 96: ...for accuracy listed in Chapter 8 System Specifications Whenever the co ordinates of the target fall outside the limits of the Quality Control envelope the following occurs The target shown on the Run Display screen changes colour A message appears on the screen to identify the reason for quality control failure Button Function Toggle height scale Function key Toggle swath width Function key Stop P...

Page 97: ...eeded pre defined limits The post processing engineers can use this flag to help them analyse the acquired data more easily 5 7 System Recovery Procedure If the SDC10 fails to operate correctly try the following methods to resolve the problem Close the DeepView for Windows software application and restart it If closing and restarting DeepView for Windows does not resolve the problem close down the...

Page 98: ...llation on page 5 37 A USB Keyboard not supplied 5 7 2 Recovery procedure steps Make sure you have backed up all your data files to external media before you carry out this procedure 1 Close down the SDC10 by disconnecting the power cable 2 Remove the USB port dust cover caps on the front of the Panel PC and attach the Teledyne TSS SDC10 recovery USB pen drive and a USB keyboard 3 Hold down the F1...

Page 99: ...S 5 33 Figure 5 17 Power reset button Figure 5 18 Boot Menu 4 Use the arrow keys to select the USB drive The name of the drive may be different from the one shown in Figure 5 18 Press the Enter key on your keyboard to continue You will see a blank screen ...

Page 100: ...Teledyne TSS DPN 402196 Issue 4 1 5 Immediately press the Enter key for a second time Figure 5 19 Windows Setup in progress 6 The Windows Setup programme displays a progress bar Figure 5 19 Figure 5 20 Automated recovery screen ...

Page 101: ... on your keyboard to select Actions from the top left hand corner Figure 5 20 Use the arrow keys on your keyboard to select Start Recovery if it is not already highlighted and press Enter Figure 5 21 NOTE If you have any difficulties with the system recovery procedure please do not use the contact details on the Automated System Recovery screen and instead con tact Teledyne TSS ...

Page 102: ... 1 Figure 5 22 Confirm recovery 8 On the confirmation dialog use the arrow keys on your keyboard to select Yes and press Enter Figure 5 22 While the Reinstall Procedure is running the system displays a progress bar Figure 5 23 Figure 5 23 Recovery in progress ...

Page 103: ...re is more than one DeepView entry in this list you must uninstall them all 3 In the Windows File Manager select the folder C Program Files TSS and delete the subfolder DeepView for Windows 4 Insert the software USB and run the installer file DeepView_Install exe the exact name of this file may vary 5 9 PC Software Installation Teledyne TSS TSS supplies a USB pen drive memory stick containing the ...

Page 104: ... the USB pen drive you will find the setup program which automatically installs the software 3 To use DeepView for Windows double click on the Teledyne TSS icon that the installation pro gramme places on your Windows 7 desktop NOTE Take the following precautionary measures to maintain the SDC and your PC in optimal condition Check all the drives on your PC for viruses using current versions of an ...

Page 105: ...at can be accessed by File and Print Configuration option this presents a text file on screen in WordPad format that can then be printed out via the normal windows process to a connected printer Variables included in the configuration file are of great value during data analysis and Teledyne TSS recommend you should always keep a written record of their settings with the survey log 6 1 Pre Survey ...

Page 106: ...y When used properly the Teledyne TSS 440 System is a precision survey tool that provides valuable and detailed survey data to describe the track of a conductive target through the survey area NOTE It is in the interest of the Survey Planners to ensure that appropriate personnel attend one of the Teledyne TSS Training Courses See Appendix B 2 Training for a description of the training available fo...

Page 107: ...ess survey you may need to stop the ROV at closely spaced intervals to perform accurate measurements on the target and to measure the mean seabed level with a separate profiling system 6 1 4 System Installation Requirements Before starting a survey the survey planning team should define the installation requirements of the 440 System They should consider The type of ROV to be used and where the SE...

Page 108: ... Wash the sub sea installation with clean fresh water and inspect the sub sea housings for damage after each survey operation Make any necessary repairs as soon as possible Never deploy the System on a survey if any of the sub sea housings show signs of damage Install the housings where there is no danger of damage from snagging on debris or contact with other equipment on the ROV Secure the housi...

Page 109: ...on the size of the ROV Coil mounting Make certain the coils are mounted rigidly on the ROV If the ROV uses a system that lowers the coil array to its normal operating position after deployment make certain this locks into the correct position before you start the first background compensation procedure See section 6 2 2 3 Background Compensation on page 6 22 for a description of background compens...

Page 110: ...round compensation procedure before you resume the survey Conductive material Do not place conductive metal fixings straps or other items near the coils during operation Use only the supplied nylon fixings and frame components to secure the coil array to the ROV Altimeter Do not attach any altimeter to the coil array Measure the vertical offset distance between the coils and the transducer face of...

Page 111: ...istance as instructed in section 6 3 2 1 Coil Insulation Test on page 6 13 Inspect the cables and connectors visually for signs of damage contamination or degradation Make any repairs necessary before you use the cables If necessary fit new cables Secure all cables to the ROV frame so that they cannot move or snag during survey opera tions Do not apply sharp bends to the cables or expose them to o...

Page 112: ...tallation Select the Run Dis play screen and check that it updates correctly Use the SDC oscilloscope display to check for correct waveforms on all channels Operations Check List Installation 1 Check that you have installed the 440 System correctly 2 Set the internal clock of the SDC to the correct date and time Establishing the Start of Survey Configuration 3 Set the target scaling factor to the ...

Page 113: ...nsation procedure Use the Noise Profile logging facility to record the signals present during the test If all signals are close to zero return to the target and continue the survey 17 Check the Seawater compensation Lift the vehicle to 3m off the seabed The target voltages should be less than 10µV If they vary check the water temperature is set correctly If good rejection cannot be obtained then c...

Page 114: ...ling factor for use in the range calculation formula Before the System can determine the correct Target Scaling factor you must supply the following information about the target Upon completion press OK to determine the correct value for target scaling factor The SDC will display this value and allow you to accept or reject it Press OK to use the displayed value This completes the Auto Scaling pro...

Page 115: ...ackground compensation reminder allows you to set a pre determined interval of between 1 and 360 minutes After the completion of the pre set interval the SDC will display a message banner as a reminder to perform this important check You may clear this panel by pressing ENTER after making the check or by performing a background compensation You may adjust the interval from within the System Parame...

Page 116: ...ils you should keep a record of the System configuration with the survey log 6 3 2 Pre dive Checks You should perform these important functional checks on the 440 System before you deploy the ROV Note that you may display a list of the recommended pre dive checks by pressing F8 from the Operation Menu 1 Coil insulation test 2 Target detection test 3 Oscilloscope test in air and in water 4 Altimete...

Page 117: ... method for lifting and sus pending the ROV off the deck Power on the 440 System and allow a period of about five minutes for the System to settle If the ROV is resting on the deck of the survey vessel the proximity of the deck and other metal fittings will cause the search coils to saturate Therefore use whatever safe means are available to lift the ROV off the deck and suspend it in the air so t...

Page 118: ...vey operation yet will allow greater confidence in the accuracy of survey meas urements You should consider them an important part of the survey operation What Is Background Compensation The Background Compensation process starts and proceeds after you enter the Background Compensation Menu and click on start from the Configuration Menu It allows the 440 System to measure any constant signal level...

Page 119: ...means that the original site had some hidden conduc tive debris near the coils 2 See section 3 1 3 2 Positioning the Search coils on page 3 6 and reposition the search coils farther from the ROV body Upon successful completion of the background compensation procedure include a written or printed copy of the compensation values with the survey log and return to the Run Display screen Examine the co...

Page 120: ...ensation routine is available see section 6 2 2 4 Seawater Active Compensation on page 6 24 and Appendix A Operating Theory This may be used if there is reason to suspect that the pre programmed parameters are not giving sufficient performance This may occur in regions of atypical salinity such as the Black Sea or in the presence of fresh water outfalls or vents Teledyne TSS recommends the use of ...

Page 121: ...nals An experienced operator will be able to detect the presence of a target and guide the ROV towards it using this graphical display even when there is no target visible on the main region of the Run Display screen Target Track The main region of the Run Display screen shows the track of the target relative to the centre of the coil array This clear and simple graphical display style helps you t...

Page 122: ...of one coil only the circle that represents the target will disappear from the screen The seabed appears on the Run Display screen as a horizontal white line This line moves up and down in response to measurements made by the altimeter if you have one connected to the System If your System has no altimeter the position of the seabed line will show the fixed coil height You should configure the SDC...

Page 123: ...ws these The first called the Early region lies between 130µs and 230µs on the timebase scale Dur ing this period the System makes 25 measurements of the signal and calculates an average value for these The second called the Standard region lies between 300µs and 400µs on the timebase scale During this period the System makes 25 measurements of the signal and calculates an average value for these ...

Page 124: ...ets of fixed length that supply all the information required for a full analysis of the survey The file includes target co ordinates signal values and important quality control information generated by the 440 System during the survey You should use this logging method to generate the primary survey recording Externally logged files will usually be stored on a separate data logger along with files...

Page 125: ...anual of your data logger for the correct communication parameters 6 4 Data Quality 6 4 1 Profile During post processing you may use the data acquired by the 440 System to plot additional information onto the target profile Similarly you may use the additional quality control information contained in the data packets to modify the way that the profile of the target appears on the chart The data pa...

Page 126: ...0 00324 00223 00000 00 T 104 277 085 192 00020 00017 00012 00000 21 T 132 200 085 115 00062 00033 00016 00000 20 Target in range Lateral offset 0 9m T 008 244 076 168 00034 00038 00036 00000 01 Target in range Lateral offset 0 9m Target in range Lateral offset 0 9m Target in range Lateral offset 0 9m T 085 00008 00012 00012 00000 99 Target out of range 1 10 100 1000 10000 µV Plot of strongest sign...

Page 127: ...ut of range or in saturation or 90cm lateral offset See also the QC check code later in this packet 3 The lateral offset LAT is measured from the centre of the coil array in centimetres Positive values indicate a target to starboard of the centre line The field will contain if the target is out of range or saturation or 90 cm LAT 4 The vertical range to target VRT is the distance between the botto...

Page 128: ... COV using COV VRT ALT in centimetres A positive value indicates the target is covered Zero or negative values indicate an exposed tar get There are several conditions that will cause the field to contain The target is out of range The 440 System cannot compute an accurate position for the target Coil saturation has occurred There is no fixed coil height or information available to the SDC from an...

Page 129: ...he coil array and the top of the conductive part of the target in millimetres If you have entered a weight coating thickness using the Target Scaling feature of the software VRT measurements will be to the top of the weight coating There are several conditions that will cause the field to contain The target is out of range The 440 System cannot compute an accurate position for the target Coil satu...

Page 130: ...ccurrence of the QC flag being set The code consists of a two digit number with the meaning defined in Table 6 3 Where possible the third coil is used to assist the lateral offset calculation This makes the LAT more stable and can make the VRT more accurate For this reason the most accurate survey information is available when all three coils are in range This is indicated by codes 00 and 20 Table...

Page 131: ...1 Teledyne TSS 6 27 Figure 6 2 Quality Code Areas NOTE When Left Right Tracking the Quality Code will be set to 99 Figure 6 3 Vertical range and offset distances TARGET VRT LAT Coil array centre line Coil 3 Coil 2 Coil 1 Starboard Port Centre ...

Page 132: ...r is a colon ASCII 3Ah I ASCII 49h identifies a co ordinates data packet The lateral offset LAT is measured from the centre of the coil array Positive values indicate a target to starboard of the centre line The field will contain question marks if the target is out of range If millimetre resolution is used the field length will be increased by one character to accommodate the addi tional resoluti...

Page 133: ...lable If millimetre resolution is used the field length will be increased by one character to accommodate the additional resolu tion 12 The SDC calculates the target depth of cover COV using COV VRT ALT A positive value indicates the target is covered Zero or negative values indicate an exposed target If millimetre resolution is used the field length will be increased by one character to accommoda...

Page 134: ...ternal Logging Format The format used for internal logging is identical to that used by the SEP to transmit data packets These data packets fall into two categories Co ordinates and Signals The SEP transmits them alternately A Co ordinates Data Packet The string is 24 characters long with individual fields definitions as follows The SDC logs all distances in units of centimetres The values in the ...

Page 135: ...l array to the top of the conductive part of the target The target depth of cover COV VRT ALT A positive value indicates the target is covered Zero or negative values indicate an exposed target The field will contain question marks if the target is out of range B Signals Data Packet The individual fields definitions for the Signals Data Packet are as follows The SDC logs all signals in units of mi...

Page 136: ...coil standard 6 4 1 3 Background Noise Profile Logging Format The format of the Background Noise Profile log is specific to this facility It can only be replayed via the Background Noise Profile dialog box Table 7 6 shows the logging format Table 6 8 Background Noise Logging format NOTES Timestamp formatted as HH MM SS obtained from the controlling PC system clock The Signals Data packet is in the...

Page 137: ...et must be no shorter than 5 metres Power on the 440 System and allow a period of 15 to 20 minutes for the System to stabilise Then with the target removed from the immediate test area perform a background compensation with the coils supported 1 metre above ground level Position the coil array so that when you move it through a range of heights the background level does not change by more than 5µV...

Page 138: ...ange Note that you may make measurements on the target to either port or to starboard of the centre line since experiments have confirmed that the performance of the 440 System is symmetrical Repeat the measurement increasing the lateral offset in 0 2m increments until a Target Out of Range warning occurs Record each measurement Return the target to the centre of the coil array and increase the ve...

Page 139: ...tructions to connect one of these alternative types of altimeter to the SDC You may connect the Datasonics unit either to the SDC COM2 port or directly to the SEP Altimeter port You must configure the display software to use your altimeter type See section 6 2 2 1 Altimeter on page 6 19 for instructions to do this The descriptions below include the individual data formats and the RS232 parameters ...

Page 140: ...cal They transmit data at 2400 baud using 7 data bits 1 start bit 1 mark bit and 1 stop bit Table 6 10 Altimeter output format Teledyne TSS and Datasonics If the Datasonics PSA 900 includes the optional pressure transducer the data string becomes Table 6 11 Altimeter output format Datasonics with pressure transducer 6 6 3 Ulvertech Bathymetric System The Ulvertech Bathymetric system transmits data...

Page 141: ... the rate that it measures depth It there fore includes the altitude field twice in each data packet separated by a space character Both altitude fields will contain similar values because it is unlikely the altitude will change signifi cantly during the short interval between the two measurements 2 The contents of these output data fields are set externally and have no effect on operation of the ...

Page 142: ... upper case D from the SDC before it transmits each data string The communication link between the OSEL altimeter and the SDC must therefore be bi directional The SDC transmits the interrogating character automatically when configured to use the OSEL altime ter 6 6 6 Tritech SeaKing Bathy 704 The SeaKing Bathy system transmits data continuously using RS232 communications at 9600 baud ...

Page 143: ... 1 The SDC performs the following calculation to calculate the altitude above the seabed Altitude Altimeter reading 200ns velocity of sound 2 For example if the count were 162712 then Altitude 162712 200ns 1475 2 24 000 metres This is the true distance from the transducer face of the altimeter to the seabed ...

Page 144: ...6 Operating Procedure 6 40 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 145: ...coil arrangement to provide the best combination of accuracy detection range and ease of deployment See section 6 4 1 1 External Logging Format on page 6 23 for a full description of the external logging format to a data logger The SDC includes a indication of the quality of the measurement NOTE The Quality Control feature eases quality control review during subsequent post processing and data ana...

Page 146: ...y over the target Under these conditions the depth of cover measurements are accurate Flying with Lateral Offset In Figure 7 1 b the lateral offset of the ROV has placed the altimeter to one side of the target so that it measures its altitude above one of the trench walls Consequently the altimeter delivers information that will not allow accurate assessment of the depth of target cover It is ther...

Page 147: ...b shows the same situation but with 15 roll applied to the ROV If left uncorrected under these conditions errors will exist in the measurements of both the vertical range and the lateral offset For a target located centrally beneath the coil array as shown the displayed value for lateral offset will contain an error as follows Where Z is the vertical distance between the coils and the target For e...

Page 148: ... See section 6 5 Target Scaling on page 6 33 for instructions Summary 1 Avoid operating the ROV with angles of skew greater than 15 2 Sometimes you may conduct a survey only with an angle of skew present for example because of crosscurrents in the survey area If this is the case perform a series of dry land tests to determine the effect that the predicted angle of skew will have on measurement acc...

Page 149: ... VRT measured by 440 System Mean Seabed Level Seabed measured by scanning profiler 440 coil array ROV Heads of scanning profiler Altimeter A Altimeter B Altimeter C Altimeter D Depth of Cover to the top of the target Depth of Cover to the bottom of the trench Depth of Cover to top of spoil heap Depth of Cover to mean seabed ...

Page 150: ...ulse Induction used by the 440 System This method detects and locates any conductive material within range of the coil array Normally the conductive material will be a valid target and the 440 System will supply data concerning its location and depth of cover with no loss of accuracy The System will also detect manipulators and other conductive parts of the ROV body that lie within range of the se...

Page 151: ...the survey 7 2 2 3 Impressed current Cathodic Protection The 440 System may suffer from noise pick up if you use it to survey pipes that use single phase impressed current cathodic protection This will generate random errors in the range and offset data Use the SDC oscilloscope function to check whether there is noise on the signal from this source Three phase impressed current protection and pipe...

Page 152: ... operating conditions 7 3 2 Altitude above the Seabed The vertical detection range of the 440 System is limited by the characteristics of the target in particular its size The low signal strength that the System receives from a small target will reduce its detection range If you use the System to survey a small target you should therefore operate the ROV as near as possible to the seabed while avo...

Page 153: ...ave used any such tools during a survey stow and secure them prop erly You must then perform a background compensation procedure before you continue the survey 7 3 4 Tracked ROV You may install the 440 System on tracked ROVs This type of ROV should allow you to set a fixed coil height ...

Page 154: ...7 Operational Considerations 7 10 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 155: ...ement performance that the System can deliver under ideal operating conditions NOTE While revising this 440 System Manual Teledyne TSS has made every effort to ensure that the specifications included are correct However in line with the Tele dyne TSS policy of continual product development and improvement Teledyne TSS reserves the right to change equipment specifications without notice Refer to Te...

Page 156: ...2 and COM3 S Video and Composite Video In Out video overlay 3 x BNC Analogue Outputs CH1 CH2 and QLTY RS232 2 wire and 4 wire current loop selector switch Keyboard On screen touch screen keyboard Monitor 19 military grade touch screen Panel PC Overall size 599 2mm W x 480mm D x 345mm H inc transit case Weight Power input voltage 90 265V 47 to 63Hz auto ranging Power consumption 250W maximum Operat...

Page 157: ...odised aluminium Stainless steel Polished Connections Search coils Three cables of length 4 metres To PSU Single 12 way cable 2 5 metres length Allow up to 300mm 11 81 inches extra for connector clearance 8 1 3 Sub sea Power Supply Pod Size Ø148 468mm Ø5 83 18 43 inches Weight Aluminium In air 13 1kg 28 8 pounds In water 4 8kg 10 6 pounds Stainless Steel In air 23 6kg 51 9 pounds In water 15 3kg 3...

Page 158: ...plexer Allow up to 300mm 11 81 inches extra for connector clearance 8 1 4 Search Coil Array Size 1000 940 30mm 39 37 37 1 18 inches Quantity 3 Weight In air 15kg 33 07 pounds each In water 4 75kg 10 47 pounds each Depth rating 6000 metres 19684 feet Material High density polyethylene HDPE SEP connection cable 4 metres 6 metre option available ...

Page 159: ...il array Note that the response of the coil array is symmetrical and accuracy is the same to port and starboard of the centre line The values are valid for positive and negative lateral offset Vertical axis increments of increasing true vertical range to the target Data table the difference between the measurement of VRT shown on the 440 and the actual vertical range IMPORTANT NOTE You should not ...

Page 160: ...0 0 0 1 1 2 110 1 1 1 1 1 1 0 1 0 1 120 0 1 1 2 1 1 1 1 0 2 130 0 1 1 0 1 1 1 1 0 2 140 0 1 0 1 0 1 1 1 1 1 150 1 0 1 2 1 1 1 1 1 2 160 1 0 1 1 1 1 1 1 2 3 170 1 1 1 1 1 2 2 3 2 3 180 1 0 1 1 1 2 2 4 2 3 190 2 1 1 2 2 3 2 4 4 4 200 1 2 1 2 2 3 3 7 9 8 210 2 4 1 2 2 5 5 13 10 5 220 3 4 3 5 4 8 8 16 14 13 230 4 3 2 4 3 10 6 11 10 14 240 4 8 3 6 6 11 6 12 23 16 250 1 11 1 3 8 8 13 13 21 21 16 260 6 7...

Page 161: ... 4 4 5 6 7 8 7 4 60 3 2 1 1 2 3 4 5 4 1 70 1 1 1 0 2 2 3 3 2 1 80 1 0 0 0 1 1 1 1 1 0 90 0 1 1 0 0 0 0 0 0 0 100 0 0 0 2 0 1 1 1 1 1 110 1 0 0 0 0 0 0 1 0 0 120 1 7 0 1 0 0 0 0 0 1 130 1 7 0 1 0 0 1 1 0 1 140 1 1 1 1 0 1 1 1 0 0 150 3 1 2 2 1 1 2 1 1 2 160 1 2 3 3 1 1 2 1 1 1 170 2 1 2 3 0 2 2 1 1 2 180 2 3 2 3 0 1 4 2 2 3 190 1 3 4 4 1 5 1 2 3 2 200 4 3 2 4 1 0 2 3 1 3 210 6 7 5 5 6 2 3 0 1 7 220...

Page 162: ... TOR TOR 100 2 3 1 3 2 1 TOR TOR TOR TOR 110 1 3 4 5 4 5 TOR TOR TOR TOR 120 2 11 8 10 7 5 TOR TOR TOR TOR True Lateral Offset cm Vertical Range 0 10 20 30 40 50 60 70 80 90 50 2 4 3 3 4 5 5 3 8 6 60 1 1 1 2 3 4 4 1 6 10 70 1 2 0 0 1 2 2 1 70 8 80 0 1 0 1 0 1 0 2 5 7 90 0 1 0 1 1 0 1 2 5 6 100 1 1 0 1 2 2 2 3 4 4 110 1 1 0 1 1 1 1 2 3 3 120 1 0 0 1 2 1 2 2 2 3 130 1 0 1 1 2 2 2 2 3 3 140 0 0 1 2 3...

Page 163: ...easurements to an external data logger to either one or four records per second Update rates available from independent seabed profiling systems may be different from the update rate you have set for the 440 System If your ROV includes both these systems you must allow for their different update rates when you analyse the survey data ...

Page 164: ...8 System Specifications 8 10 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 165: ...solate the equipment from the electrical supply before you work on any equipment that uses a mains power supply Arrange to discharge any power supply storage capacitors safely Observe all relevant local and national safety regulations while you perform any maintenance work on electrically powered equipment Do not connect the equipment to an electrical supply until you have refitted all safety cove...

Page 166: ...accepts nominal 240V AC instead The PSU uses switched mode circuitry to convert the electrical supply from the ROV into the four conditioned and stabilised DC supplies required by the SEP These are 5V 2A for use by the control logic 15V 500mA for use by the analogue electronics 15V 500mA for use by the analogue electronics 15V 10A to drive the search coils Cooling of the supply is by direct therma...

Page 167: ... endcap off Under no circum stances should a screwdriver or similar be used to lever the endcap off as this will result in damage to the o ring seal and the casing 9 1 1 2 Filter Assembly See drawing 400654 in Chapter 10 System Drawings The output from a switched mode power supply is inherently noisy To prevent this electrical noise from disturbing the sensitive analogue circuits within the SEP al...

Page 168: ...rough an optically isolated serial communications link 9 1 2 2 Driver Board See drawing 401181 in Section Chapter 10 System Drawings Under the control of the Main Board the Driver Board drives the coil channels using four power MOSFET switches A current limiter allows coil current to rise to a maximum value of 20A during each drive pulse The action of the limiter ensures that the amplitude of the ...

Page 169: ...ible contention the 440 System assigns Master status to the SDC and Slave status to the SEP Immediately after you power on the 440 System the SEP transmits a short banner message to the SDC and then waits for commands to arrive Other than its initial banner message the SEP will not transmit any data until it receives a carriage return signal from the SDC The SEP Main Board generates current at 20m...

Page 170: ...tible to damage due to electrostatic discharge You must take precautions against such damage These precautions include the use of a grounded conductive mat and wrist strap Teledyne TSS will not accept responsibility for any damage caused by failure to take such precautionary measures 9 2 2 Sub sea Installation CAUTION Many components within the sub sea pods are susceptible to damage due to electro...

Page 171: ...6 Remove the two jacking screws from the end cap 7 Do not allow strain to develop on the internal connectors as you ease the end cap away from the SEP housing Disconnect the 12 way and the 6 way internal connectors by pressing their two side clips together and pulling the plugs and sockets apart 8 Disconnect the ground strap by pulling the spade connector and receptacle apart Remove the coil conne...

Page 172: ...b screws align with the hardened stainless steel inserts on the end of the SEP housing 15 Insert the four M4 16mm A4 stainless steel screws and use the 3mm hexagonal key to tighten them evenly Insert both grub screws and tighten them lightly 16 Reconnect the ground wires the 8 way and the 6 way connectors on the Power Comms end cap Make certain both locking clips on each of the multi way connector...

Page 173: ...g to obstruct the free rotation of the small board mounted fan 10 Carefully align the end cap to the PSU housing so that the four securing screws will engage properly If necessary turn the end cap slightly to achieve perfect alignment Ensure that the two holes for the grub screws align with the hardened stainless steel inserts on the end of the PSU housing 11 Reconnect the 12 way connector to the ...

Page 174: ...he System Config uration display 3 Check that you have connected all cables correctly 4 Check that the correct electrical supplies are available to the SDC and the PSU 5 Identify the fault symptoms as clearly as possible and apply the appropriate fault identification routine from the following list Fault on a single channel only see section 9 3 1 Fault on Single Channel Only on page 9 11 Communica...

Page 175: ...the channel working Is the wiring good No Yes Repair or renew the connector wiring No Yes Renew the faulty coil cable Check connections and wiring to the Driver Board Renew the faulty coil Swap the coil on the faulty channel Swap the coil cable on the faulty channel Power off the System Single channel fault Go to CHART 2 Disassemble the SEP See sub section 10 2 2 ...

Page 176: ...he jumper cable from the Driver to the Analogue PCB Exchange the faulty channel jumper with a working channel Check the signal on the faulty channel Renew the Driver PCB Renew the Analogue PCB Repair or renew the jumper cable WARNING Dangerous voltages exist in this area of circuitry You must disconnect power from the System before you perform work in these areas ...

Page 177: ...able Continuity check the cable and umbilical Comms OK LED or wiring failure Repair as necessary Power on the System 110V 20 OK Check the mains power supply source Power off the System Reconnect the SEP Power Comms cable Go to CHART 2 Use terminal mode to check SEP comms Yes No Yes No No Yes See sub section 6 2 1 4 for terminal mode Connect AC voltmeter across pins 1 3 Look for 240V instead if you...

Page 178: ...s No A B From CHART 1 Power on the System Connect DC voltmeter to Pin3 and Pin 4 Connect a DC voltmeter to Pin 5 and Pin 6 Remove the filter assembly from the power supply pod Check continuity of the filter Connect a DC voltmeter to Pin 7 and Pin 6 Renew the Power Supply PCB Renew the filter assembly Go to CHART 3 From CHART 3 Connect a DC voltmeter to Pin 2 and Pin 1 of the 12 way connector ...

Page 179: ...supply pod Go to CHART 2 Disassemble the SEP See sub section 10 2 2 Check for damage or signs of water ingress Check the correct link headers are Main PCB LK4 and LK5 positions Reconnect the 12 way connector to the SEP Reconnect the 12 way and 6 way QM in line connectors Power on the System Check the supply LEDs on the Driver PCB Check wiring and supply voltages Change the faulty PCB Go to CHART 4...

Page 180: ...ms OK From CHART 3 Check internal wiring from the 12 way QM to all PCBs Repair or renew wiring Disconnect 4 way Molex from CN2 on Main PCB Check cable continuity and repeat target scaling Short CN2 pin 1 to pin 2 on the Main PCB Short CN2 pin 3 to pin 4 on the Main PCB Check communications Go to CHART 5 2 wire current loop 4 wire current loop Yes Yes No No Re assemble the SEP Yes No ...

Page 181: ...he terminal mode and check the data strings against those listed in section 6 6 Altimeter Data Format on page 6 35 See section 6 2 1 2 View Options on page 6 9 for details of the terminal mode If there are no data strings from the altimeter check the RS232 parameters and the wiring Refer to the altimeter manual for specific servicing details Correct header OK Is wiring good Yes No Yes No From CHAR...

Page 182: ...r Ensure 350SEP selected Screen updates OK Clear COMMS problem Select Altimeter config then press altimeter test Data OK from altimeter Comms from altimeter are good Press OK to end test Is altimeter updating Altimeter is good Refer altimeter manual Contact TSS for advice Go to CHART 2 Check correct altimeter type is selected No Yes Yes No Yes No ...

Page 183: ...eter end cap Yes No Yes No See sub section 10 2 2 for SEP disassembly From CHART 1 Power off the System Disconnect cable from altimeter Continuity check altimeter cable Renew altimeter cable Connect a 470 ohm 1 watt resistor between pins 1 and 3 of the SEP altimeter port Set DC voltmeter to pins 1 and 3 of SEP altimeter port Disassemble the SEP Check wiring to end cap Repair renew wiring Renew the...

Page 184: ...aulty channel Variation more than 10 µV Variation less than 10 µV Signal increase less than or equal to 10 µV System OK No Is the ROV Stationary No Yes How many channels are affected One Water Temperature set OK More than one Perform a background compensation Check if the signal variation is less than 10 µV See sub section 7 2 4 For background compensation Refer to sub section 10 3 1 for single ch...

Page 185: ...frame is Rigid Check for movement in the coil frame No Correct movement in the coil frame Moving the coils farther from the ROV body reduces signal variations induced by movement of the ROV body Yes Yes From Chart 1 Refer to sub section 7 2 3 1 for instructions Perform a coil resistance and Insulation check No Yes Move the coils farther from the ROV body Check Water Temperature set correctly Perfo...

Page 186: ...re more than 10 V but less than 50 V then increase threshold setting to compensate This will reduce the detection range µ µ Continue the survey operation Signal variations less than 50 V µ Check background compensation regularly Yes Contact VT TSS for assistance From Chart 2 No Contact Teledyne TSS for assistance ...

Page 187: ... 490232 1 Sub sea Electronics Pod Aluminium and Stainless Steel 401178 1 Main Board 401178 2 Main Board Processor 401178 3 Main Board Analogue AD DA 401178 4 Main Board Timing Comms B929935 1 Main Board Piggy back board 401181 1 Driver Board 401181 2 Driver Board Control 401181 3 Driver Board MOSFETs 401071 1 Analogue Board 401071 2 Analogue Board Control 401071 3 Analogue Board Pre amps 401050 1 ...

Page 188: ... 5 67 7 67 7 3 32 5 2006 520 368 32 3 1 72 6 5 2 6 127 86 7 7 6 1 3 1 3 1 9 2 1 1 1 1 3 1 2 1 1 67 1 5 7 6 36 250 7 1R 3DULW VWRS EDXG GDWD 66 3 1 66 3 1 1 7 0 7 5 203 7 0 1 32 1 6 237 21 86 2 8 62 76 21 1 3 0 1 785 3 7 50 1 2 6 5 6 7 67 72 7 5 7 6 9 211 725 66 0 2 3 1 1 2 3 1 3 1 3 1 3 1 3 1 3 1 1 1 1 1 1 1 1 1 6 6 1 3 1 3 1 3 1 3 1 6 5 1 6 5 1 6 5 1 6 5 1 57 7 1 3 3 1 02 PP 02 PP 63 6 02 PP 02 P...

Page 189: ... CPU CLKIN CPU IO SPACE NVM SERIAL CLOCK NVM I2C CLOCK NVM I2C DATA 8 10 15 20 NOT FITTED 21 22 23 24 25 26 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 3 3 3 3 3 ADC HELD SIGNAL ADC STAR POINT ADC CONVERT 0 ADC S 1 H 0 ADC DATA READY BIO NOT FITTED 3 3 3 4 4 4 4 4 4 4 ANLG ZERO SUPPRESSION ANLG SECOND STAGE SIG ANLG OUTPUT TO SHC CPU INT1 PRETRIGGER CPU INT0 ACQ START TIMING DRIVE 0 DECODE ...

Page 190: ... NOT FITTED NOT FITTED NOT FITTED NOT FITTED NOT FITTED NOT FITTED U47 62256 0 3 U47 62256 0 3 A0 10 A1 9 A2 8 A3 7 A4 6 A5 5 A6 4 A7 3 A8 25 A9 24 A10 21 A11 23 A12 2 A13 26 A14 1 CS 20 OE 22 R WL 27 D0 11 D1 12 D2 13 D3 15 D4 16 D5 17 D6 18 D7 19 U48 62256 0 3 U48 62256 0 3 A0 10 A1 9 A2 8 A3 7 A4 6 A5 5 A6 4 A7 3 A8 25 A9 24 A10 21 A11 23 A12 2 A13 26 A14 1 CS 20 OE 22 R WL 27 D0 11 D1 12 D2 13...

Page 191: ...0 SIL RP4F 100 SIL 1 7 RP4G 100 SIL RP4G 100 SIL 1 8 R15 100k ALPHA FCX R15 100k ALPHA FCX U18B 74HCT74 U18B 74HCT74 D 12 CLK 11 Q 9 Q 8 PR 10 CL 13 RP4H 100 SIL RP4H 100 SIL 1 9 R20 4k7 GP R20 4k7 GP U53 OP27EP U53 OP27EP 6 3 2 R12 10k0 ALPHA FCX R12 10k0 ALPHA FCX U28D DG221 U28D DG221 14 16 15 U29 OP27EP U29 OP27EP 6 3 2 C10 10p CER C10 10p CER R2 10 GP R2 10 GP C3 47u 6VT C3 47u 6VT TP22 SP4 T...

Page 192: ...PCB ASSY AS 2 WIRE C LOOP RS232 RESPECTIVELY LK4 LK5 TO SURFACE COMPUTER VIA ROV UMBILICAL EMC Earth Connect to Mounting holes EMC Earth Connect to Mounting holes NC NC NC 2 2 TXD RXD NC A3 REV 5 CHK REVISION HISTORY ISS 25 NOV 02 CCT A SJ NOs PCB First issue DATE ECR JP ED BY BY 6 2 8 MAR 07 440 Update TH RP5E 1k SIL RP5E 1k SIL 1 6 DC41 100n 30VC DC41 100n 30VC DC42 100n 30VC DC42 100n 30VC RP5D...

Page 193: ... IT IS SUPPLIED DIMS IN SCALE UNLESS OTHERWISE STATED STANDARD MANUFACTURED REQUIREMENTS TO M 018 ARE MANDATORY A U 1 3 8 1 3 929935 CD UNCLASSIFIED 1 1 CIRCUIT DIAGRAM MAIN PCB PIGGY BACK BOARD MM SECURITY CLASSIFICATION DRAWING NUMBER SERVICE DRAWING NUMBER SHEET No SHT No ARCHIVE FILE REF MOD TITLE 1996 ALL RIGHTS RESERVED S G Brown Garnett Close Greycaine Industrial Estate Watford Hertfordshir...

Page 194: ...TO MOSFET MOUNTING PLATE VIA SOLDER TAG 26 NOV 02 JP2 LGND SHEET 5V FUNCTION D15V TESTPOINT LOCATIONS PGND VPWR2 TP No DR1 GATE AGND GND SENSE 2 WIRE GND NB CONVENTIONAL CURRENT FLOWS NOT USED RS232 IF USED Tx IN TO POD ON LINES CURRENT LOOP Rx NOT USED CL Rx DATA COMMS CONFIGURATIONS DETERMINED BY LINKS ON MAIN PCB HANDSHAKE 4 WIRE Tx SIGNAL NAME Rx CL Tx DATA TO COIL 2 VIA UNDERWATER CONNECTOR X...

Page 195: ...INTERLOCK DIODE D16 ARTWORKED HERE ON ISS 2 PCBs CORRECTED BY MOD ECR 129 NOTE NOT USED AT PRESENT COMPONENTS WITHIN DOTTED BOX MAY NOT BE FITTED EXCEPT R2 R4 R6 R8 WHICH ARE FITTED 15V 15V 5V A3 PCB ISS CCT REV 3 JP ED BY REVISION HISTORY 26 NOV 02 CHK BY First issue DATE ECR NOs A SJ TP9 Sht 3 IS D15V TP10 Sht 3 IS LGND 8 MAR 07 2 4 440 Update TH FITTED FITTED FITTED FITTED D9 1N4148 D9 1N4148 5...

Page 196: ...R U13A OR U13B FITTED U13A AS NMA0509S IS STANDARD THEY SUPPLY POWER TO OPTIONAL EXTERNAL ALTIMETER VIA JP12 IF U13B FITTED LK1 MAY BE USED TO SELECT CORRECT OUTPUT 20mV A FOR R28 20mR 20A 10A R28 10mR 400mV R28 20mR R28 10mR 200mV R28 20mR NC A3 PCB ISS CCT REV 3 JP ED BY REVISION HISTORY 26 NOV 02 CHK BY First issue DATE ECR NOs A NOT FITTED SJ NO 8 MAR 07 2 4 440 Update TH NOT FITTED NOT FITTED...

Page 197: ...CT NOs A CHK DATE REV JP PCB REVISION HISTORY BY 26 NOV 02 BY ECR 1 ISS ED Assembled PCB 401071 Bare PCB 301045 A3 NC PGND NC 3 SCREEN AGND SCREEN 2 EX1 1 SIGNAL NO BD NAME BD NAME PIN DRIVER ANALOGUE FUNCTION 1 PGND 1 GROUND NOTE EITHER OF AGND AND PGND CAN BE USED LINK ON HEADER AS REQ D STANDARD SETTING IS TO PGND NO CONNECTION MADE TO AGND ON THIS ASSY NB ALL GNDs LINKED AT STAR POINT ON MAIN ...

Page 198: ...U2 U3 U4 U5 ARTWORKED 1 2 ON NCS LK1 SELECTS GROUND REF FOR U2 U4 TO U3 U5 PINS 7 PINS 4 TO U3 U5 STD SETTING IS GND A3 Assembled PCB 401071 Bare PCB 301045 NC NC NC CCT ED PCB BY REV NOs ISS BY CHK DATE REVISION HISTORY ECR 8th March 2007 26 NOV 02 1 SJ A First issue JP 2 Low Noise 8 MAR 07 TH 2 FGND AND SGND ARE PHYSICALLY CONNECTED AT THIS POINT 14 16 15 12 U4D DG221 U4D DG221 S1 4 S2 5 S3 6 S4...

Page 199: ...8 MAR 07 TH 2 R16 2k0 RC55 R16 2k0 RC55 TP7 TP7 R6 2k0 RC55 R6 2k0 RC55 2 3 6 U7 OPA602BP U7 OPA602BP R18 2k0 RC55 R18 2k0 RC55 TP8 TP8 2 6 8 1 3 5 U12 AD620 U12 AD620 R26 15k RC55 R26 15k RC55 TP9 TP9 Db3 1N4148 Db3 1N4148 R27 787 RC55 R27 787 RC55 TP10 TP10 R10 2k0 RC55 R10 2k0 RC55 R20 15k RC55 R20 15k RC55 TP11 TP11 R12 2k0 RC55 R12 2k0 RC55 R8 15k RC55 R8 15k RC55 DC15 100n 30VC DC15 100n 30V...

Page 200: ...10 System Drawings 10 14 Teledyne TSS DPN 402196 Issue 4 1 Figure 10 13 401050 1 PSU Filter Assembly WVV DSSV DDUGYDUN MEBDUF H MSJ ...

Page 201: ...W 97 766 WG 5 76 5 6 59 766 3 3 1 2 7 21 6 67 0 5 9 6 21 6725 7 7 5 9 66 12V 3 5 57 6 5 1 9 9 6833 127 86 1 875 6833 1 7 7 7 7 7 7 7 12 211 7 21 72 6 5 1 7 6 1 7 7 6 211 7 3 8 62 7 72 60 17 32 5 6833 66 0 1 8 9 21 1 3 62 5 7 6 21 1 3 5 3 8 6 7 2006 2006 2006 2006 6 127 78 2 62 5 7 8 3 8 1 7 1 1 7 7 25 25 5 6 7 02 7 5 66 0 6 5 1 1 1 1 26 1 7 5 5 6 5 1 29 5 7 6 32 5 2006 72 520 529 0 16 9 32 5 2006 ...

Page 202: ...Drawing Number Description Stainless Steel Drawing Number N A SDC10 Dimensions N A 400604 1 Power Supply Chassis Assembly 400646 1 400667 1 Main Chassis Assembly 400668 1 400667 2 Main Chassis Assembly 400668 2 401181 1 Driver PCB Assembly N A 401071 1 Analogue PCB Assembly N A 400654 1 PSU Filter Assembly 400655 490232 1 Processor Pod Assembly 490233 490228 1 Power Supply Pod Assembly 110 Volt ve...

Page 203: ...10 System Drawings DPN 402196 Issue 4 1 Teledyne TSS 10 17 Figure 10 15 SDC10 Dimensions ...

Page 204: ...10 System Drawings 10 18 Teledyne TSS DPN 402196 Issue 4 1 Figure 10 16 400604 1 Power Supply Chassis Assembly ...

Page 205: ...10 System Drawings DPN 402196 Issue 4 1 Teledyne TSS 10 19 Figure 10 17 400667 1 Main Chassis Assembly ...

Page 206: ...10 System Drawings 10 20 Teledyne TSS DPN 402196 Issue 4 1 Figure 10 18 400667 2 Main Chassis Assembly ...

Page 207: ...LLOWS ORANGE TO PIN 1 OF JP12 BROWN TO PIN 2 OF JP12 20 COMPONENT FITTED ON L C ompany F orms Logos T SS International Ltd Logos tss internationalcolourlogo bmp HOLE TOLERANCES GENERAL TOLERANCES DESCRIPTION H 1 CHECKED DRAWN G F APPROVED ISSUE 3 2 ECR 4 DATE DATE B D E C A SHEET No 1 DRAWING No 2 3 4 FILENAME USED ON DRAWING No TITLE SCALE FORM MATERIAL 6 5 7 8 DIMENSIONS IN FINISH SPEC 10 9 11 1...

Page 208: ...HOLE TOLERANCES FORM SCALE MATERIAL TITLE DRAWING No D C B SHEET No A 1 2 4 3 6 5 DRAWING No USED ON FILENAME DIMENSIONS IN 7 8 FINISH SPEC 9 10 TSS International Ltd 1 Garnett Close Greycaine Industrial Estate Watford Hertfordshire WD24 7GL Tel 44 0 1923 470800 SHEET No 11 12 A3 H G F E 8 7 10 9 D C B 11 12 THIRD ANGLE PROJECTION A NOTES PDF created with FinePrint pdfFactory trial version http ww...

Page 209: ...10 System Drawings DPN 402196 Issue 4 1 Teledyne TSS 10 23 Figure 10 21 400654 1 PSU Filter Assembly ...

Page 210: ...10 System Drawings 10 24 Teledyne TSS DPN 402196 Issue 4 1 Figure 10 22 490232 1 Processor Pod Assembly ...

Page 211: ...10 System Drawings DPN 402196 Issue 4 1 Teledyne TSS 10 25 Figure 10 23 490228 1 Power Supply Pod Assembly 110v version ...

Page 212: ...10 System Drawings 10 26 Teledyne TSS DPN 402196 Issue 4 1 Figure 10 24 500045 1 Coil Mounting Frame ...

Page 213: ...10 System Drawings DPN 402196 Issue 4 1 Teledyne TSS 10 27 Figure 10 25 B930892 1 Coil Assembly ...

Page 214: ...10 System Drawings 10 28 Teledyne TSS DPN 402196 Issue 4 1 Figure 10 26 601004 1 Coil Cable Assembly ...

Page 215: ...10 System Drawings DPN 402196 Issue 4 1 Teledyne TSS 10 29 Figure 10 27 B930473 1 PSU to ROV PWR COMMS Cable 3 0m ...

Page 216: ...10 System Drawings 10 30 Teledyne TSS DPN 402196 Issue 4 1 Figure 10 28 601824 1 Teledyne TSS Altimeter 250 Cable Assembly 3 0m standard ...

Page 217: ...CONNECTOR VIEW LOOKING AT PINS ON PARTS REQUIRED 1 IMPULSE LPIL 7 MP OR EQVT 2 IMPULSE IE55V 2006 CCP FIB OR EQVT 1 5 6 3 4 3 HEATSHRINK CABLE LABEL 4 CLEAR ADHESIVE LINED HEATSHRINK SLEEVE OVER LABEL NOTES 601203F 601203F TSS P N 306721 1 ONLY ONE CABLE IDENT SLEEVE TO BE FITTED PER CABLE ASSEMBLY 2 ONLY R C No SERIAL No TO BE ADDED TO TSS FREE ISSUE CABLE IDENT WITH 3m TAIL SO18 3 1 2 3 4 5 6 7 ...

Page 218: ...10 System Drawings 10 32 Teledyne TSS DPN 402196 Issue 4 1 Figure 10 30 500268 1 440 Pipe and Cable Survey System Complete Assembly ...

Page 219: ...Induction NOTE Because of the special characteristics of 316 stainless steel it is very difficult to establish strong eddy currents in this material For this reason you would experi ence considerable difficulties in detecting targets made exclusively from 316 stain less steel A current flowing through any coil will create a surrounding magnetic field The strength of that field at any instant in ti...

Page 220: ...of magnetic field induces eddy currents in nearby conductive targets and the magnetic fields associated with these eddy currents induce a voltage in the coil See Figure A 1 c Because the current changes at a much higher rate at the end of the drive pulse than at the start the eddy currents are much stronger while the current decays to zero The initial high voltage peak 250V that occurs in the coil...

Page 221: ... accuracy before storing them in a buffer memory Within the sampling period there are three regions each of which is 100µs wide Sample Region 1 Early This region begins 130µs after the beginning of the sample period and provides the early level for the channel The SEP calculates and stores the average value of the 25 individual samples taken within this region Sample Region 2 Standard This region ...

Page 222: ...ion 2 It then subtracts the mean value for Sample Region 3 from the mean values for Sample Region 1 and 2 and this final figure represents the two signal voltages for the specific channel Each channel therefore has its signal strength values updated ten times per second A 2 3 Seawater Rejection A 2 3 1 Introduction The Teledyne TSS 440 system represents a considerable advance over the familiar 340...

Page 223: ... the three coils receiving different seawater signals are minimised A 2 4 Compensation How it Works The Teledyne TSS 440 uses two separate methods of compensation background and seawater active Background compensation removes contributions to the signals which do not vary with altitude for example the ROV and the metal in the coil connectors These effects are accounted for by a compensation proced...

Page 224: ...metallic objects in the sea bed or a failure of one of the detection coils The early coil voltages will be typically 5 times greater due to the increased sensitivity Once the background compensation is completed then the coil voltages should all be reported as zero This indicates that the subtraction has been carried out correctly Then the active compensation can be performed A 2 4 2 Active Compen...

Page 225: ... y intercept 50µV can be tolerated since it is the gradient of the curve which is important Figure A 5 Perfect lift with the results passing through the origin Figure A 6 Example of poor background compensation If metal is present on the sea bed then the graph will not move smoothly away from the origin as the vehicle is lifted This is shown in Figure A 7 This will have a detrimental affect on the...

Page 226: ...t voltages are displayed With the vehicle still 3m above the sea bed these should be within a few µV of zero If the vehicle is now slowly dropped to the seabed then the target voltages should remain close to zero They may deviate slightly in either a positive or negative sense but should remain much less than the signal threshold of 15µV If the voltages change suddenly when the vehicle lands on th...

Page 227: ...perature will be nearly constant and should have little effect However if the survey crosses the thermocline or will approach areas of different conductivity such as vents or fresh water outfalls then the active compensation will need to be checked more frequently If a conductivity probe is available on the vehicle then any changes will be apparent to the users A change of more than a few mS cm ma...

Page 228: ...e Figure A 10 Typical lift curves with a fixed target present This means that if the seawater rejection mechanism is faced with early and standard voltages of 140 and 1450µV it will be unable to decide if a target is present or not This means that at 140µV of seawater the algorithm will not work correctly and return a less accurate value for range However this point occurs only when the ROV is app...

Page 229: ...ond the scope of this manual since correcting for the exact nature of the coil response is complex When the target is close to the coils all three coils are used to determine the position The differences between the port and centre and starboard and centre coils are taken then used to compute range If the sum of these differences is less than the threshold or any coil is less than the threshold th...

Page 230: ...A Operating Theory A 12 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 231: ...th the option to operate from a nominal 240V AC electrical supply When you interconnect the 440 and 350 or 350 Powertrack Systems within a Dualtrack installation you must operate both from the same electrical supply Throughout this sub section the 350 Manual refers to the Teledyne TSS 350 Cable Survey System Manual Teledyne TSS document P N 402197 The 350 Powertrack Manual refers to the TSS docume...

Page 232: ...d with the Dualtrack System are exactly as described in the relevant parts of the 440 System Manual and the 350 or 350 Powertrack Manual except for those differences listed in section B 1 2 The Differences on page B 2 B 1 2 The Differences Note the following important issues when you install the Dualtrack System 1 Scope of Delivery See section B 1 3 Scope of Delivery on page B 3 for a list of the ...

Page 233: ...0 or 350 Powertrack SEP 4 Operation NOTE In a Dualtrack installation you cannot operate the 440 and the 350 or 350 Power track Systems simultaneously DeepView for Windows allows you to switch between the 440 and the 350 350 Powertrack operating mode easily and quickly The Run Window and its status bar will show the current operating mode 5 Power requirement See section B 1 7 Power Supply Requireme...

Page 234: ...s of the Teledyne TSS 440 System Table B 1 Components of the Dualtrack System Item Description Refer to Figure B 1 The SDC includes Surface Display Computer SDC pre loaded with Microsoft Windows 7 and the DeepView for Windows display software Touch screen display Rear mounted comms enclosure containing power and comms interfaces 2 x front mounted USB ports ...

Page 235: ... the mounting bar and coil triads of the Teledyne TSS 350 or 350 Powertrack System Follow the instructions included in section 3 1 3 Coil Array on page 3 5 of this Manual to install the mounting frame and the coil array of the 440 System Refer to Figure B 2 E Sub sea Electronics Pod for the Teledyne TSS 350 or 350 Powertrack Cable Survey Systems F Two connection cables with waterproof connectors f...

Page 236: ...ystem includes three sub sea pods The PSU for the 440 System The SEP for the 440 System The SEP for the 350 or 350 Powertrack System Follow the instructions in sub section 3 2 1 of the 350 350 Powertrack Manual to install the 350 350 Powertrack SEP Follow the instructions included in section 3 1 2 SEP and PSU on page 3 3 of this Manual to install the 440 SEP and the 440 PSU B 1 6 Electrical Connec...

Page 237: ...anual Route the coil connection cables to the correct ports on the 440 SEP Use plastic cable clips to secure the cables to the fixed framework of the ROV 2 Install the altimeter near the centre of the 440 search coil array as described in section 3 1 4 Altimeter on page 3 13 of this Manual Route the cable from the altimeter to the 440 SEP and follow the instructions in section 4 1 6 1 Direct Conne...

Page 238: ... Systems are available for operation from a nominal 240V AC electrical supply When you interconnect the 350 or 350 Powertrack and the 440 Systems within a Dualtrack installation you must operate both Systems from the same electrical supply 6 Connect the communications conductors of the 350 350 Powertrack Power Comms cable to the ROV umbilical Note that the Dualtrack System would normally use 2 wir...

Page 239: ... SEP on the ROV Follow the instructions in section 5 1 Software Installation on page 5 1 of this Manual to install the software onto your SDC To configure the Dualtrack System properly you must complete the following actions 1 Use the DeepView for Windows System Configuration Wizard to configure the 440 and the 350 or 350 Powertrack Systems correctly Select Dualtrack for the SEP type Refer to sect...

Page 240: ...ns are mutually exclusive you cannot operate the installation with the 440 System and the 350 System operating simultaneously 3 DeepView for Windows annotates the internal logging file with the operating mode so that it can replay the file correctly IMPORTANT Note that the external logging file changes its format when you switch between the 440 and the 350 mode Be aware that this might cause probl...

Page 241: ...n for the Dualtrack System is 3 1A at 110V AC nominal electrical supply or 1 8A at 240V AC nominal electrical supply B 2 Training The Teledyne TSS 440 Pipe and Cable Survey System is a precision front line survey tool To exploit the full potential of the System all personnel involved with a survey that uses the 440 System from the initial planning stages to final data presentation should possess a...

Page 242: ...B Options B 12 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 243: ...timeter mounting kit spares assembly Table C 2 TSS ALT 250 part numbers 500292 Altimeter subsea Teledyne TSS ALT 250 3000m no cable or accessories 500294 As above detection kit 3000m includes bracket 601824A 500295 Altimeter 3000m including 3m pigtail 601826A B345420 Altimeter subsea Teledyne TSS ALT 250 6000m no cable or accessories B931155 As B345420 detection kit 6000m includes bracket 601824A ...

Page 244: ...C Altimeter C 2 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 245: ...ecord details about the 440 System before and during a survey You should complete these forms and include copies with the final survey results to help the post processing engineers with their survey analyses These are master copies of the forms printed on right hand pages only for easier photocopying Make copies of these forms as necessary ...

Page 246: ...D Reference D 2 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 247: ...ternal diameter cm Target wall thickness cm Weight coating thickness cm Background Compensation Channels in use Start of scaling procedure End of scaling procedure Channel 1 Early µV µV Standard µV µV Channel 2 Early µV µV Standard µV µV Channel 3 Early µV µV Standard µV µV Channel 4 Early µV µV Standard µV µV Water Temperature Hot Medium Cold Compensation Manual M G Final target scaling Target sc...

Page 248: ...D Reference D 4 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 249: ...caling factor µV Nominal VRT cm True VRT COL 1 440 VRT COL 2 Range error COL 1 COL 2 Channel signals µV Starboard Centre Port 40 60 80 100 120 140 160 180 200 210 220 230 240 Nominal VRT cm True VRT COL 1 440 VRT COL 2 Range error COL 1 COL 2 Channel signals µV Starboard Centre Port 40 60 80 100 120 140 160 180 200 210 220 230 240 ...

Page 250: ...D Reference D 6 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 251: ...elope Results Target scaling factor µV True VRT cm V R T V A L U E S D I S P L A Y E D B Y S D C Lateral offset cm to port or to starboard 3 0 0 2 8 0 2 6 0 2 4 0 2 2 0 2 0 0 1 8 0 1 6 0 1 4 0 1 2 0 1 0 0 8 0 6 0 4 0 2 0 0 20 40 60 80 100 120 140 160 180 200 220 240 260 ...

Page 252: ...D Reference D 8 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 253: ...pe S N Analogue option fitted Y N Coil mapping Threshold setting µV Target Type Weight coating thickness cm Target scaling factor Altimeter Source Altimeter S N Enabled Y N Altimeter Offset cm Fixed coil altitude cm External data logger type Logging rate Compensation reminder interval Audible alarm enabled Y N Initial compensation values early Port Centre Starboard Initial compensation values stan...

Page 254: ...D Reference D 10 Teledyne TSS DPN 402196 Issue 4 1 ...

Page 255: ...lds Signal voltage 17 Data logging 19 Connection 15 Internal logging format 30 Replay 30 Depth of target cover See COV Display software Configuration file 11 Default configuration 24 Mapping 12 Starting from DOS 2 System configuration 9 Threshold 7 10 Driver board 4 Dualtrack 1 340 communication method 9 Altimeter installation 7 Coils installation 5 Communication method 9 Display software 3 SEP co...

Page 256: ...Connection 5 Installation 6 Insulation test 13 Location 7 8 Separation distance 6 SEP 3 6 5 Altimeter port 6 7 Analogue board 5 Blanking plugs 5 Circuit description 4 Coil ports 6 Communication method 4 12 Driver board 4 Grounding 4 Internal layout 12 Main board 4 Mounting block 4 Servicing 7 Separation distance 6 Servicing PSU 8 SEP 7 Skew 16 Skew effects 4 Status bar 15 Sub sea electronics pod S...

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