Edgetech 2050-DSS Side Scan and Sub-Bottom Owner's manual

EdgeTech

4 Little Brook Road

West Wareham, MA 02576

Tel: (508) 291-0057

Fax: (508) 291-2491

www.EdgeTech.com

2050-DSS SIDE SCAN AND SUB-BOTTOM SYSTEM

USER HARDWARE MANUAL

0024048 REV B 11/30/2022

ii

2050-DSS Side Scan and Sub-Bottom System 0024048 REV B

The information, figures, and specifications in this manual are proprietary. They are issued in strict

confidence on the condition that they not be copied, reprinted, or disclosed to a third party, either wholly

or in part, without the prior written consent of EdgeTech. Any reproduction of EdgeTech-supplied

software or file sharing is strictly prohibited.

Microsoft® and Windows® are registered trademarks of Microsoft Corporation.

Kevlar® is a registered trademark of the DuPont Company.

Intel® and Pentium® are registered trademarks of Intel Corporation.

Novagard G624® is a registered trademark of Novagard Solutions, Inc.

Storm Case™ is a registered trademark of Pelican.

iii

ATTENTION – READ THIS FIRST!

All personnel involved with the equipment installation, operation, or maintenance described in this

manual should read and understand the warnings and cautions provided below.

CAUTION! This equipment contains devices that are extremely sensitive

to static electricity. Therefore, extreme care should be taken when

handling them. Normal handling precautions involve using anti-static

protection materials and grounding straps for personnel.

WARNING! High voltage may be present in all parts of the system.

Therefore, use caution when the electronics are removed from their

containers for servicing.

CAUTION! Operation with improper line voltage may cause serious

damage to the equipment. Always ensure that the proper line voltage is

used.

Warnings, Cautions, and Notes

Where applicable, warnings, cautions, and notes are provided in this manual as follows:

WARNING! Identifies a potential hazard that could cause injury or death.

CAUTION! Identifies a potential hazard that could damage equipment or

data.

NOTE: Recommendations or general information that is particular to the

material being presented.

iv

2050-DSS Side Scan and Sub-Bottom System 0024048 REV B

HARDWARE VARIATIONS AND COMPATIBILITY

The 2050-DSS Side Scan and Sub-Bottom System contains both standard and proprietary hardware.

EdgeTech may change the standard components due to their availability or performance improvements.

Although the component manufacturers and their models and styles may change from unit to unit,

replacement parts will generally be interchangeable.

EdgeTech will make every effort to see that replacement components are interchangeable and use the

same software drivers (if applicable). At times, however, direct replacements may not exist. When this

happens, EdgeTech will provide the necessary drivers with the replacement part, if applicable.

EdgeTech may also change certain hardware per customer requirements. Therefore, portions of this

manual, such as parts lists and test features, are subject to change. These sections should be used for

reference only. When changes are made that affect system operation, they will be explicitly noted. Also,

some options and features may not be active in the customer’s unit at the time of delivery. Upgrades will

be made available when these features are implemented.

Contact EDGETECH CUSTOMER SERVICE with any questions relating to compatibility.

v

ABOUT THIS DOCUMENT

We, the employees at EdgeTech, would like to thank you for purchasing a 2050-DSS Side Scan and Sub-

Bottom System. At EdgeTech, our policy is to provide high-quality, cost-effective products and support

services that meet or exceed your requirements. We also strive to deliver them on time and to look for

ways to improve them continuously. We take pride in the products we manufacture and want you to be

entirely satisfied with your equipment.

Purpose of this Manual

The purpose of this manual is to provide the user with information on the setup and use of EdgeTech’s

2050-DSS Side Scan and Sub-Bottom System. Although this manual encompasses the latest operational

features of the 2050-DSS Side Scan and Sub-Bottom System, some features may be periodically upgraded.

Therefore, the information in this manual is subject to change and should be used for reference only.

Liability

EdgeTech has made every effort to document the 2050-DSS Side Scan and Sub-Bottom System in this

manual accurately and completely. However, EdgeTech assumes no liability for errors or any damages

resulting from the use of this manual or the equipment it documents. EdgeTech reserves the right to

upgrade features of this equipment and to make changes to this manual without notice at any time.

Revision History

REVISION DESCRIPTION DATE APPROVAL

A Release to Customers 5/25/2021 DWF

B Starmux IV, Pipeliner Feature, Macrium Updates 11/30/2022 BS

vi

2050-DSS Side Scan and Sub-Bottom System 0024048 REV B

WARRANTY STATEMENT

All equipment manufactured by EdgeTech is warranted against defective components and workmanship

for a period of one year after shipment. Warranty repair will be done by EdgeTech free of charge.

Shipping costs are to be borne by the customer. Malfunction due to improper use is not covered in the

warranty, and EdgeTech disclaims any liability for consequential damage resulting from defects in the

performance of the equipment. No product is warranted as being fit for a particular purpose, and there is

no warranty of merchantability. This warranty applies only if:

i. The items are used solely under the operating conditions and in the manner recommended in the

Seller's instruction manual, specifications, or other literature.

ii. The items have not been misused or abused in any manner, nor have repairs been attempted

thereon without the approval of EdgeTech Customer Service.

iii. Written notice of the failure within the warranty period is forwarded to the Seller, and the

directions received for properly identifying items returned under warranty are followed.

iv. The return notice authorizes the Seller to examine and disassemble returned products to the

extent Seller deems necessary to ascertain the cause for failure.

The warranties expressed herein are exclusive. There are no other warranties, either expressed or implied,

beyond those set forth herein. The Seller does not assume any other obligation or liability in connection

with the sale or use of said products. Any product or service repaired under this warranty shall only be

warranted for the remaining portion of the original warranty period.

Equipment not manufactured by EdgeTech is supported only to the extent of the original manufacturer's

warranties.

CAUTION! If your product is a portable topside, never attempt to ship it

in its Storm CaseTM alone. Shipping portable topsides without an exterior

shipping crate will void the warranty.

vii

SOFTWARE SERVICE OVERVIEW

EdgeTech provides software services free of charge. This software agreement does not address customer-

specified modifications or enhancements. These services may be ordered separately. Furthermore,

EdgeTech software upgrades are meant for the sole use of EdgeTech customers. Any reproduction of

EdgeTech-supplied software or file sharing is strictly prohibited.

Software Updates and Enhancements

EdgeTech customers can download new software releases with all modifications and enhancements from

the EDGETECH WEBSITE. Should major software issues occur, they will be reported directly to the customer.

New software releases consist of the following:

• Software enhancements that are not on the price list

• Software fixes and changes

• Product integration

• Documentation updates to online help

• Tests for compatibility with other modules

Software patches consist of software that has undergone the following:

• Minor software enhancements

• Software fixes and changes

EdgeTech customers are entitled to contact EDGETECH CUSTOMER SERVICE by telephone, facsimile, or e-mail

to report a difficulty, discuss a problem, or receive advice on the best way to perform a task. When

contacted, EdgeTech Customer Service will do the following:

• Respond within 24 hours via Telephone, Facsimile, and E-mail Support

• Immediately attend to serious problems affecting operations

• Attempt to find an immediate workaround

viii

2050-DSS Side Scan and Sub-Bottom System 0024048 REV B

RETURNED MATERIAL AUTHORIZATION

Prior to returning any equipment to EdgeTech, a Returned Material

Authorization (RMA) Number must be obtained from CUSTOMER SERVICE.

RMA Purpose

The RMA Number identifies returned equipment when it arrives at our receiving dock and enables tracking

while at our facility. Refer to the RMA number on all documentation and correspondences.

All returned materials must be shipped prepaid. Freight collect shipments will not be accepted. All

equipment should be adequately insured for shipping, but equipment belonging to EdgeTech must be

insured for full value.

If there is more than one item per consignment, include a packing with the shipment. An invoice can

double as a packing slip only when the contents are clearly numbered and identified on the invoice.

CAUTION! Never attempt to ship a Portable Topside in its Storm CaseTM

alone. Although rugged, these cases are not intended to be used as

shipping containers, and the delicate internal components could be

damaged. Shipping in this manner will void any warranties.

NOTE: All shipping charges shall be the customer's responsibility unless

under warranty, as EdgeTech will pay for return shipping.

NOTE: For International Shipments valued over $1000, the following

Shipper's oath must be sent with the invoice.

Shipper’s Oath:

"I, ______________________________, declare that the articles herein specified are the growth,

produce, or manufacture of the United States; that they were exported from the

United States from the port of _____________________, on or about _______________; that they

are returned without having been advanced in value or improved in condition by any

process of manufacture or any other means; and that no drawback, or allowance has

been paid or admitted hereof."

Signed ______________________________

ix

CUSTOMER SERVICE

Customer service personnel at EdgeTech are always eager to hear from users of our products. Your

feedback is welcome and a valuable source of information that we use to improve these products

continually. Therefore, we encourage you to contact EdgeTech Customer Service to offer any suggestions

or to request technical support:

NOTE: Please have your system Model and Serial Number available when

contacting Customer Service.

E-mail: service@edgetech.com

Mail: 4 Little Brook Road

West Wareham, MA 02576

Telephone: (508) 291-0057

Facsimile: (508) 291-2491

24-Hour Emergency

Technical Support Line: (508) 942-8043

For more information, please go to WWW.EDGETECH.COM.

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2050-DSS Side Scan and Sub-Bottom System 0024048 REV B

COMPANY BACKGROUND

EdgeTech (formerly EG&G Marine Instruments) traces its history in underwater data acquisition and

processing back to 1966. EdgeTech has designed, developed, and manufactured products, instruments,

and systems — for the acquisition of underwater data, including marine, estuarine, and coastal

applications — for over 50 years.

EdgeTech responds to the needs of the scientific, naval, and offshore communities by providing industry-

leading equipment — such as sub-bottom profilers, side scan sonar, acoustic releases, USBL positioning

systems, and bathymetric systems — that have become standards in the industry.

EdgeTech consistently anticipates and responds to future needs with an active research and development

program. Current efforts are focused on adapting new cutting-edge acoustic technology.

xi

TABLE OF CONTENTS

ATTENTION – READ THIS FIRST! ......................................................................................................... iii

Warnings, Cautions, and Notes ................................................................................................................ iii

HARDWARE VARIATIONS AND COMPATIBILITY .................................................................................. iv

ABOUT THIS DOCUMENT .................................................................................................................... v

Purpose of this Manual ............................................................................................................................. v

Liability ...................................................................................................................................................... v

Revision History ........................................................................................................................................ v

WARRANTY STATEMENT ................................................................................................................... vi

SOFTWARE SERVICE OVERVIEW ........................................................................................................ vii

Software Updates and Enhancements.................................................................................................... vii

RETURNED MATERIAL AUTHORIZATION .......................................................................................... viii

RMA Purpose ......................................................................................................................................... viii

CUSTOMER SERVICE .......................................................................................................................... ix

COMPANY BACKGROUND .................................................................................................................. x

TABLE OF CONTENTS ......................................................................................................................... xi

LIST OF FIGURES ............................................................................................................................... xv

LIST OF TABLES .............................................................................................................................. xvii

1.0 OVERVIEW .............................................................................................................................1-1

1.1 Key Features .............................................................................................................................. 1-1

1.2 Applications ............................................................................................................................... 1-3

1.3 Main System Components ......................................................................................................... 1-4

1.3.1 2050-DSS Tow Vehicle .......................................................................................................... 1-4

1.3.2 2050-DSS Starmux IV Topside ............................................................................................... 1-5

1.3.3 Tow and Test Cables ............................................................................................................. 1-5

1.4 Optional Equipment .................................................................................................................. 1-6

1.4.1 ROV Mounting Kit ................................................................................................................. 1-6

1.4.2 Magnetometer ...................................................................................................................... 1-6

1.4.3 USBL Responder Beacon ....................................................................................................... 1-6

1.4.4 Pressure Sensor .................................................................................................................... 1-7

1.4.5 SBG AHRS .............................................................................................................................. 1-7

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2050-DSS Side Scan and Sub-Bottom System 0024048 REV B

2.0 SPECIFICATIONS .....................................................................................................................2-8

2.1 2050-DSS Tow Vehicle Specifications ........................................................................................ 2-8

2.1.1 2050-DSS Towfish Physical Specifications ............................................................................ 2-8

2.1.2 2050-DSS Sonar Specifications ............................................................................................. 2-9

2.2 Starmux IV Topside Specifications ........................................................................................... 2-10

2.3 Tow Cable Specifications ......................................................................................................... 2-11

2.3.1 Armored Tow Cable Specifications ..................................................................................... 2-11

2.4 2050-DSS Mechanical Drawings .............................................................................................. 2-13

2.4.1 2050-DSS Towfish Mechanical Drawing ............................................................................. 2-13

2.4.2 2050-DSS Electronic Bottle and End Cap Configuration Drawing ....................................... 2-14

2.4.3 2050-DSS Sub Bottom Transducer Drawing ....................................................................... 2-15

2.4.4 2050-DSS PVDF Hydrophone Drawing ................................................................................ 2-16

2.4.5 2050-DSS Side Scan Transducer Drawing ........................................................................... 2-17

2.4.6 2050-DSS Test Cable Drawing ............................................................................................. 2-18

2.4.7 2050-DSS Starmux IV Topside Digital Link Drawings .......................................................... 2-19

3.0 TECHNICAL DESCRIPTION ..................................................................................................... 3-21

3.1 2050-DSS Tow Vehicle Technical Description .......................................................................... 3-21

3.1.1 2050-DSS Towfish System Diagram .................................................................................... 3-22

3.1.2 2050-DSS Sonar Processor Diagram ................................................................................... 3-23

3.1.3 2050-DSS Sonar Processor Endcap Diagram ....................................................................... 3-24

3.1.4 2050-DSS Main I/O Interface (J1) ....................................................................................... 3-25

3.1.5 2050-DSS Magnetometer I/O Interface (J2) ....................................................................... 3-26

3.1.6 2050-DSS Responder I/O Interface (J8) .............................................................................. 3-27

3.2 2050-DSS Starmux IV Topside Technical Description .............................................................. 3-27

3.2.1 Starmux IV Control, Indicator, and Connection Configurations ......................................... 3-27

3.2.1.1 Starmux IV Controls, Indicators, and Connections ..................................................... 3-28

3.2.1.2 Starmux IV and EdgeTech 2U Computer Controls, Indicators, and Connections ....... 3-29

4.0 SETUP AND ACTIVATION ...................................................................................................... 4-33

4.1 Unpacking and Inspection ....................................................................................................... 4-33

4.2 Power Requirements ............................................................................................................... 4-33

4.2.1 Use of an Uninterrupted Power Supply .............................................................................. 4-33

4.2.2 Change to a Non-US Power Plug ......................................................................................... 4-34

xiii

4.3 Topside Processor Placement .................................................................................................. 4-34

4.4 Connecting the System Components ...................................................................................... 4-34

4.4.1 Connecting and Attaching the Tow Cable to the Towfish .................................................. 4-35

4.4.2 Connecting the Tow Cable to the Starmux IV ..................................................................... 4-35

4.4.3 Connecting the Starmux IV to the Computer ..................................................................... 4-36

4.4.3.1 Connecting to the Starmux IV DL ................................................................................ 4-36

4.4.3.2 Connecting to the 2050 Rack Mount with Starmux IV DL .......................................... 4-37

4.4.4 Navigation Interface ........................................................................................................... 4-38

4.4.5 TCP/IP Address Settings ...................................................................................................... 4-38

4.5 System Activation .................................................................................................................... 4-39

4.6 Performing System Pre-Deployment Testing .......................................................................... 4-40

4.6.1 Testing the Sonar Processor ............................................................................................... 4-40

4.6.2 Performing Sub-Bottom Pre-Deployment Checks .............................................................. 4-41

4.7 SBG AHRS Usage ...................................................................................................................... 4-44

4.8 Tow Vehicle Bridle Removal, Adjustment, and Installation .................................................... 4-45

4.8.1 Tow Bridle Removal ............................................................................................................ 4-46

4.8.2 Tow Bridle Adjustment ....................................................................................................... 4-47

4.8.3 Tow Bridle Installation ........................................................................................................ 4-47

4.9 Towfish Deployment ................................................................................................................ 4-50

4.10 Towfish Layback Charts ........................................................................................................... 4-53

4.10.1 Cable A320327 Layback Chart ............................................................................................ 4-54

4.10.2 Cable A302799 Layback Chart ............................................................................................ 4-55

4.10.3 Cable A309183 Layback Chart ............................................................................................ 4-56

5.0 MAINTENANCE .................................................................................................................... 5-57

5.1 Cleaning the Tow Vehicle and Cable After Use ....................................................................... 5-57

5.2 Inspecting and Cleaning the Underwater Connectors............................................................. 5-57

5.3 Tail Rudder Removal and Installation ...................................................................................... 5-57

5.4 Storage ..................................................................................................................................... 5-60

5.5 Opening the 2050-DSS Towfish ............................................................................................... 5-60

5.6 Sonar Processor Removal and Installation .............................................................................. 5-62

5.7 Sub-Bottom Transducer Removal and Installation .................................................................. 5-64

5.8 Operating System Restoration ................................................................................................ 5-65

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2050-DSS Side Scan and Sub-Bottom System 0024048 REV B

6.0 TROUBLESHOOTING ............................................................................................................. 6-68

6.1 Starmux IV Troubleshooting .................................................................................................... 6-68

A.0 KITS ................................................................................................................................... 6-69

xv

LIST OF FIGURES

Figure 1-1: 2050-DSS Side Scan and Sub Bottom Imagery Displayed in Discover ..................................... 1-1

Figure 1-2: Interpretation: Pipeline and Cable Detection .......................................................................... 1-2

Figure 1-3: 2050-DSS Towfish Side View .................................................................................................... 1-4

Figure 1-4: 2050-DSS Towfish Forward View ............................................................................................. 1-5

Figure 1-5: 2050-DSS Towfish Aft View ...................................................................................................... 1-5

Figure 1-6: Case Mounted Starmux IV and EdgeTech CPU ....................................................................... 1-5

Figure 1-7: Test Cable ................................................................................................................................ 1-5

Figure 1-8: 2050-DSS Magnetometer Interface ......................................................................................... 1-6

Figure 2-1: 2050-DSS Towfish Drawing (0023737)-Click Image For Embedded PDF ............................... 2-13

Figure 2-2: 2050-DSS Electronics Bottle Drawing (0023404) ................................................................... 2-14

Figure 2-3: 2050-DSS KT-216D Transducer Drawing (0012552)-Click Image for Embedded PDF............ 2-15

Figure 2-4: 2050-DSS Hydrophone PVDF Drawing (0017353)-Click Image for Embedded PDF ............... 2-16

Figure 2-5: 2050-DSS Side Scan Array Drawing (0019213) ...................................................................... 2-17

Figure 2-6: Test Cable (0011690) ............................................................................................................. 2-18

Figure 2-7: Starmux IV ICD (0022246)- Click Image For Embedded PDF ................................................. 2-19

Figure 2-8: 2050-DSS Rack Mounted Option ........................................................................................... 2-20

Figure 3-1: Bottom View of 2050-DSS Towfish ........................................................................................ 3-21

Figure 3-2: 2050-DSS Towfish System Diagram ....................................................................................... 3-22

Figure 3-3: 2050-DSS Sonar Processor Diagram (0023520) ..................................................................... 3-23

Figure 3-4: Sonar Processor Endcap Diagram (0023521) ........................................................................ 3-24

Figure 3-5: Tow Cable to Electronic Bottle Diagram (0002915) .............................................................. 3-25

Figure 3-6: Magnetometer Interface Cable Diagram (0007367) ............................................................. 3-26

Figure 3-7: Starmux IV Front and Rear Panel Controls, Indicators, and Connections ............................. 3-28

Figure 3-8: Labeled Front Panels of Starmux IV Rackmount ................................................................... 3-30

Figure 3-9: Labeled Rear Panels of Starmux IV Rackmount ..................................................................... 3-31

Figure 4-1: Starmux IV and Computer Connected By Ethernet Cable ..................................................... 4-35

Figure 4-2: Starmux IV Sea Cable Connector ........................................................................................... 4-36

Figure 4-3: Discover Serial Port Configuration ......................................................................................... 4-38

Figure 4-4: Windows Manual IP Properties Window ............................................................................... 4-38

xvi

2050-DSS Side Scan and Sub-Bottom System 0024048 REV B

Figure 4-5: Command Prompt Ping Test .................................................................................................. 4-40

Figure 4-6: Sonar.exe Successful Self-Test ............................................................................................... 4-41

Figure 4-7: Status Indicator Bar- NET: ON ................................................................................................ 4-41

Figure 4-8: Discover 2050 Sub-Bottom Display Window ......................................................................... 4-42

Figure 4-9: The Sub-Bottom Control Tab ................................................................................................. 4-42

Figure 4-10: Sub-Bottom Control Tab-Pulse and Transmit Level Called Out ........................................... 4-43

Figure 4-11: Sub-Bottom Shortcut Toolbar- Range Text Field and Normalize Gain Button Called Out .. 4-43

Figure 4-12: Sub-Bottom Display Tap Test Results .................................................................................. 4-44

Figure 4-13: 2050-DSS Starboard Bridle Power and Data Cable Cable-Tie Locations.............................. 4-46

Figure 4-14: Tow Bridle Arm Removal Hardware .................................................................................... 4-47

Figure 4-15: Tow Fish Bridle Mounting Bracket Positioning .................................................................... 4-48

Figure 4-16: Tow Bridle Arm Removal Hardware .................................................................................... 4-49

Figure 4-17: 2050-DSS Starboard Bridle Power and Data Cable Cable-Tie Locations.............................. 4-49

Figure 4-18: 2050-DSS Tow Cable and Grip Bridle Attachment ............................................................... 4-50

Figure 4-19: 2050-DSS Towfish Deployment ........................................................................................... 4-52

Figure 4-20: Bottom Track Tab ................................................................................................................ 4-52

Figure 5-1: 2050-DSS Tail Rudder [3] Bolt Hardware Assembly Locations .............................................. 5-58

Figure 5-2: Tail Rudder Bolt Hardware .................................................................................................... 5-59

Figure 5-3: Tail Rudder Bolt Hardware Disassembly ................................................................................ 5-59

Figure 5-4: 2050-DSS Upper-Shell Disassembly [13] Bolt-Hardware Locations ....................................... 5-60

Figure 5-5: 2050-DSS Bolt Hardware Disassembly ................................................................................... 5-61

Figure 5-6: 2050-DSS Bolt Hardware Assembly ....................................................................................... 5-61

Figure 5-7: 2050-DSS Sonar Processor Mounting Assembly .................................................................... 5-62

Figure 5-8: 2050-DSS Vertically Mounted Sub-Bottom Transducer Removal and Installation ............... 5-64

Figure 5-9: 2050-DSS Sub Bottom Transducer Clamp and Mount Orientations ..................................... 5-65

Figure 5-10: Restoration Edit Image Selection ........................................................................................ 5-66

Figure 5-11: Restoration- Add Search Path Confirmation Buttons .......................................................... 5-66

Figure 5-12: Restoration Restore Button ................................................................................................. 5-67

Figure 5-13: Restoration-Confirm Overwrite Continue Button ............................................................... 5-67

xvii

LIST OF TABLES

Table 2-1: 2050-DSS Towfish Specifications .............................................................................................. 2-8

Table 2-2: 2050-DSS Sonar Specifications .................................................................................................. 2-9

Table 2-3: Starmux IV Specifications ........................................................................................................ 2-10

Table 2-4: Armored Cable A309183 Specifications .................................................................................. 2-11

Table 2-5: Armored Cable A392799 Specifications .................................................................................. 2-12

Table 2-6: Armored Cable A320327 Specifications .................................................................................. 2-12

Table 3-1: Main I/O Interface Cable Pin Outs .......................................................................................... 3-25

Table 3-2: Magnetometer Interface Cable Pin Outs ................................................................................ 3-26

Table 3-3: Responder IO Pin Outs ............................................................................................................ 3-27

Table 3-4: Starmux IV Front and Rear Panel Controls, Indicators, and Connection Descriptions ........... 3-29

Table 3-5: EdgeTech 2U Computer Controls, Indicators, and Connections Descriptions ........................ 3-32

Table 4-1: AC Power Wiring Wire Colors for Conversion ......................................................................... 4-34

Table 4-2: 2050-DSS Factory Installed Component IP Addresses ............................................................ 4-39

Table 4-3: 2050-DSS Tow Bridle Removal Tools ...................................................................................... 4-46

Table 4-4: 2050-DSS Tow Bridle Installation Tools and Hardware .......................................................... 4-48

Table 4-5: Cable A320327 Layback Chart ................................................................................................. 4-54

Table 4-6: Cable A302799 Layback Chart ................................................................................................. 4-55

Table 4-7: Cable A309183 Layback Chart ................................................................................................. 4-56

Table 5-1: Tail Rudder Removal and Installation Tools and Hardware .................................................... 5-58

Table 5-2: Upper-Shell Disassembly and Assembly Tools and Hardware ................................................ 5-61

Table 5-3: Sonar Processor Installation and Removal Tools and Hardware ............................................ 5-63

Table 5-4: Sub-Bottom Transducer Removal and Installation Tools and Hardware ................................ 5-64

Table 6-1: Starmux IV Troubleshooting Table .......................................................................................... 6-68

Table 6-2: 2050-DSS Accessory Kit ........................................................................................................... 6-69

1-1

1.0 OVERVIEW

The EdgeTech 2050-DSS (Deep Side Scan Sonar and Sub-Bottom Profiler) is a fully integrated tri-frequency

side scan and sub-bottom system that is particularly useful in conducting high-resolution sub-bottom

surveys close to the seabed. The system’s hydrodynamic towfish configuration options are currently a 2-

16 kHz sub-bottom profiler that utilizes a polyvinylidene fluoride (PVDF) panel receiver hydrophone that

provides excellent sub-bottom receive sensitivity and directivity. The 2050-DSS system comes with either

a 120/410/850 kHz or a 230/540/850 kHz side scan sonar array using EdgeTech’s proven CHIRP technology

to provide crisp, high-resolution side scan imagery. The system is controlled, data is collected and

processed by a topside Starmux IV Digital link and an EdgeTech Discover Software enabled computer. The

2050-DSS can be integrated with auxiliary sensors such as a magnetometer, depth sensor, altitude sensor,

and a USBL responder. The system can also be integrated with an ROV (Remotely Operated Vehicle) with

a mounting kit.

1.1 Key Features

Fully Integrated Turn-Key System: The system comes delivered to customer specifications with minimal

setup and configuration.

Tri-Frequency Side Scan Sonar: The

standard 2050-DSS configurations

are either a 120/410/850 kHz or

230/540/850 kHz array that can

operate any two frequencies

simultaneously. The system

frequency choice can be

reconfigured instantly, allowing the

operator to react and optimize range

and resolutions to changing survey

conditions and to use the system in

multiple roles.

Sub-Bottom Profiler: The 2050-DSS

system has enhanced sub-bottom

profiling capabilities with a low-

frequency transducer and a PVDF

receiver. Mounted within the system

is a single 2-16 kHz transducer that provides improved directionality and the ability to focus power where

needed. The PVDF receive panel provides 2D directionality and improved sensitivity over simple line

arrays.

Figure 1-1: 2050-DSS Side Scan and Sub Bottom Imagery

Displayed in Discover

1-2

2050-DSS Side Scan and Sub-Bottom System 0024048 REV B

Pipeliner Mode: In conventional Sub-Bottom configurations, two hydrophone arrays are mounted parallel

in the Along-Track direction, which gives a narrow along-track beamwidth and a wider across-track

beamwidth. In these Sub-Bottom systems, the surveyor had to manually switch the vehicle’s hydrophone

position to achieve the wide Fore/AFT beam configuration suitable for pipeline detection.

In EdgeTech’s new pipeline detection configuration, a single transverse hydrophone sensor gives a wide

along-track beamwidth, accentuating the pipeline's parabola

Figure 1-2: Interpretation: Pipeline and Cable Detection

The 2050 Sub-Bottom Profiler has a unique “Pipeliner Mode” feature that utilizes the parabolic acoustic

shape created by the smaller narrow receive PVDF panel, that is wide in the Along Track Direction (parallel

to the direction of travel and running Fore/Aft) and narrow in the Across Track Direction (normal to the

direction of travel and running Port/Starboard). When approaching a buried cable or pipe (normal

incidence), the wide Fore/Aft looking beam (Pipeliner mode) provides the ability to detect the object at

greater ranges. As the 2050 continues to approach the object, not only does signal strength increase, but

the acoustic travel time will decrease. When plotted, the increasing strength and decreasing travel time

creates a parabolic shape that reaches an apex when the distance between the 2050 and the object is

minimized. The object creates the second parabolic leg as the 2050 moves away. Multiple passes can

further refine the position and triangulation.

Pipeline, cable detection, and Depth-of-burial (DOB) surveys seek to visually identify the signature

hyperbolas, indicating a cylindrical object at the cross point between the cable route and the survey track.

Narrow-beam systems may miss target pipes or cables in heterogeneous environments because they are

focused on a single return as opposed to the graphically “increasing/decreasing” shape that visually

highlights the path leading to and away from the target

1-3

EdgeTech’s Discover Sub-Bottom software allows the surveyor to automatically switch between the

2050’s dual apertures when switching to a transmit pulse designed to provide a very high ping rate (up to

30 Hz) for better detection and measurement of the shallow buried pipe/cable.

The Pipeline Mode feature of the 2050 can also detect boulders, UXO, buried hazards, or other debris for

site clearance and route surveys.

The echo data’s diffraction hyperbolas are generated by running survey lines perpendicular to the

pipe/cable crossings. Multiple crossings might be necessary to meet the survey requirement of Along-

Track data density. Higher pipeline position accuracy is achieved by having the sonar close to the seafloor

(2-5m).

Configuring a 2050 system to Pipeliner Mode is a software configuration with no hardware modifications

or changes required. Detailed Instructions on configuring the 2050 sonar subsystem to this mode are

found in the Configure the 2050 to Pipeline Mode section of the DISCOVER 2050 SOFTWARE MANUAL.

Reflection Coefficient Calculation: Discover 2050 Software can calculate reflection coefficients that aid in

bottom sediment classification. The configuration procedure to do this adjusts the system gain constant

so that the reflection coefficient provides an estimate of the ratio between the pressure amplitude of the

pulse striking the seafloor and the amplitude of the reflected pulse. These values can then be compared

with the known values of the local seafloor to classify the composition of the surveyed area.

Detailed instructions on reflection coefficient calculation are found in the Configure the Reflection

Coefficient section of the DISCOVER 2050 SOFTWARE MANUAL .

Digital Telemetry Over a Single Coaxial Armored Tow Cable: The topside processor interfaces with the

towfish over an armored 10/100BaseT cable connection, using asynchronous digital subscriber line (ADSL)

modems.

Deep Water Operations: The system is rugged and rated to a depth of 2,000 meters. An optional Edgetech

armored cable provides digital telemetry over a single coaxial-type cable up to 6,000 meters in total

length.

Additional Payload Options: The 2050-DSS can be integrated with magnetometers, depth sensors,

altitude sensors, and a USBL responder.

ROV Mounting Option: The system components can be mounted on a ROV with a mounting kit.

1.2 Applications

Applications for the 2050-DSS Combined Side Scan Sonar and Sub-Bottom Profiling System are many, a

few of which are the following:

• Cable and Pipeline Surveys

• Geological/Geophysical Surveys

• Sediment Classification

• Pre/Post Dredging Surveys

• Archeological Surveys

• Scour/Erosion Investigation

• Marine Construction Surveys

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Edgetech 2050-DSS Side Scan and Sub-Bottom Owner's manual

Edgetech 2050-DSS Side Scan and Sub-Bottom Owner's manual

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