Edgetech 4125 SIDE SCAN User manual

EdgeTech
4 Little Brook Road
West Wareham, MA 02576
Tel: (508) 291-
0057
Fax: (508) 291-
2491
www.EdgeTech.com
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4125 SIDE SCAN SONAR SYSTEM
USER HARDWARE MANUAL
0004823_REV_C

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4125 SIDE SCAN SONAR SYSTEM 0004823_REV_C
The information, figures, and specifications in this manual are proprietary and are issued in strict
confidence on 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.
©Copyright 2014 by EdgeTech. All rights reserved.
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 trademark of Novagard Solutions, Inc.
Storm Case™ is a trademark of Pelican, Inc.
CentrinoTM is a trademark of Intel Corporation.
Kellems® is a registered trademark of Hubbell Incorporated.

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WARNING – READ THIS FIRST!
All personnel involved with the installation, operation, or maintenance of the equipment described in this
manual should read and understand the warnings and recommendations provided below.
Static Sensitive Devices
This equipment contains devices that are extremely sensitive to static electrical charges. Therefore
extreme care should be taken when handling them, as static electricity may be present on the body and
clothing. Normal handling precautions involve the use of anti-static protection materials and grounding
straps for personnel.
Radiation
This equipment generates, uses, and can radiate radio frequency energy. Therefore if the equipment is
not installed properly, it may cause interference with radio communications. The equipment has not been
tested for compliance with the appropriate FCC rules designed to provide reasonable protection against
such interference when operated in a commercial environment. Therefore when operating the equipment
in a residential area, the user may be required to take whatever measures are needed and incur any
expenses necessary to eliminate interference; it is the user's responsibility to verify that the system
complies with the applicable FCC emission limits.
High Voltages
High Voltage may be present in all parts of the system. Use caution when the electronics are removed
from their containers for servicing.
Improper Line Voltage
Operation with improper line voltage may cause serious damage to the equipment. Always ensure that
the proper line voltage is used.

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4125 SIDE SCAN SONAR SYSTEM 0004823_REV_C
H
HARDWARE VARIATIONS AND COMPATIBILITY
The 4125 SIDE SCAN SONAR SYSTEM contains both standard PC and proprietary hardware. At times
EdgeTech may change the standard components due to their availability or performance improvements.
Although the component manufacturers, along with their models and styles may change from unit to unit,
replacement components will generally be interchangeable.
EdgeTech will make every effort to see that replacement components are interchangeable and use the
same software drivers. At times, however, direct replacements may not exist. When this happens,
EdgeTech will provide the necessary drivers with the replacement part.
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 time of delivery. Upgrades will be
made available when these features are implemented.

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PREFACE
We, the employees at EdgeTech, would like to thank you for purchasing 4125 SIDE SCAN SONAR SYSTEM.
At EdgeTech, it is our policy 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 continuously look for ways to
improve them. 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 installation and use of
EdgeTech’s 4125 SIDE SCAN SONAR SYSTEM. For detailed information relating to software that came with
this device, refer to the appropriate user software manual.
Although this manual encompasses the latest operational features of 4125 SIDE SCAN SONAR SYSTEM,
some features may be periodically upgraded. Therefore the information in this manual is subject to
change and should be used for reference only.
Summary of Sections
This manual is divided into the following five sections and three appendices:
SECTION 1: Overview. Describes the 4125 system, its applications, major components, and available
options. Also includes a section about EdgeTech’s role as the leader in underwater technology over the
past few decades.
SECTION 2: Specifications. Details the topside processor, tow vehicle, cables, and options. Also includes
technical descriptions for some of the major computer components within the system.
SECTION 3: Set-up & Activation. Explains how to properly unpack, set-up, test, deploy, and recover the
4125 system.
SECTION 4: Maintenance. Describes the basic maintenance procedures required for different parts of the
system.
SECTION 5: Troubleshooting. Explains how to disassemble and reassemble the tow vehicle chassis.
Describes the procedure for recalibrating the compass. And provides basic troubleshooting techniques.
APPENDIX A: Backup & Restore. Provides the instructions for making a copy of the hard drive onto a
provided USB drive and then using this same drive to restore the system in the unlikely event of its failure.
APPENDIX B: Printers. Describes the various printers that may be used with the 4125 Series system.
APPENDIX C: Tow Characteristics. Includes graphical representations of the tow vehicle and cable at
various lengths, depths, and weights.

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4125 SIDE SCAN SONAR SYSTEM 0004823_REV_C
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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 personal injury or death to
yourself or to others.
CAUTION!
Identifies a potential hazard that could be damaging to equipment or
could result in the loss of data.
NOTE: Recommendations or general information that is particular to
the material being presented. It may also refer to another part of this
manual or to another manual.
Liability
EdgeTech has made every effort to document 4125 SIDE SCAN SONAR SYSTEM in this manual accurately
and completely. However, EdgeTech assumes no liability for errors or for any damages that result from
the use of this manual or the equipment it documents. EdgeTech reserves the right to upgrade features
of this software and to make changes to this manual without notice at any time.

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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
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 Seller and the directions
received for properly identifying items returned under warranty are followed.
iv. The return notice authorizes 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, and 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 be
warranted for the remaining portion of the original warranty period only.
Equipment not manufactured by EdgeTech is supported only to the extent of the original manufacturer's
warranties.

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4125 SIDE SCAN SONAR SYSTEM 0004823_REV_C
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SOFTWARE SERVICE OVERVIEW
EdgeTech provides software services free of charge. The SSA 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 customer. 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 along
with user's manual changes from the EdgeTech ftp site. Major software issues, should they occur, will be
reported directly to the customer. New software releases consist of the following:
xSoftware enhancements that are not on the price list
xSoftware fixes and changes
xProduct integration
xDocumentation updates to on-line help
xTests for compatibility with other modules
Software patches consist of software that has undergone the following:
xMinor software enhancements
xSoftware fixes and changes
xSoftware Telephone, Facsimile, and E-mail Support
The SSA entitles EdgeTech customers to contact EdgeTech Customer Service by telephone, facsimile, or
e-mail to report a difficulty, to discuss a problem or to receive advice on the best way to perform a task.
When contacted, EdgeTech Customer Service will do the following:
xRespond within 24 hours
xImmediately attend to serious problems affecting operations
xAttempt to find an immediate work-around

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RETURNED MATERIAL AUTHORIZATION
Prior to returning any equipment to EdgeTech, a Returned Material Authorization (RMA) number must be
obtained. The RMA will help us identify your equipment when it arrives at our receiving dock and track
the equipment while it is at our facility. The material should be shipped to the address provided in the
EdgeTech Customer Service section. Please refer to the RMA number on all documents and
correspondences as well.
All returned materials must be shipped prepaid. Freight collect shipments will not be accepted. EdgeTech
will pay freight charges on materials going back to the customer after they have been evaluated and/or
repaired.
CAUTION!
Never attempt to ship portable topside units in their Storm Case alone.
Although rugged, these cases are not intended to be used as shipping
containers, and the delicate internal components could be damaged if
used in this manner.
The following steps apply only to material being returned from outside the Continental United States.
Follow them carefully to prevent delays and additional costs.
1. All shipments must be accompanied by three copies of your proforma invoice, showing the value
of the material and the reason for its return. If the reason is for repair, it must be clearly stated in
order to move through customs quickly and without duties being charged. Whenever possible,
please send copies of original export shipping documents with the consignment.
2. If the value of the equipment is over $1000, the following Shipper's oath must be sent with the
invoice. This oath can be typed on the invoice, or on a separate letterhead:
"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 ______________________________
3. If there is more than one item per consignment, a packing list must accompany the shipment. It
is acceptable to combine the proforma invoice and packing list as long as the contents of each
carton are clearly numbered and identified on the invoice.
4. Small items can be shipped prepaid directly to EdgeTech by FedEx, DHL, UPS, Airborne, etc.

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4125 SIDE SCAN SONAR SYSTEM 0004823_REV_C
5. If the equipment is the property of EdgeTech (formerly EG&G Marine Instruments Division),
please insure for full value.
6. Fax one invoice, packing list, and a copy of the airway bill to EdgeTech upon shipment.

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CUSTOMER SERVICE
Customer service personnel at EdgeTech are always eager to hear from users of our products. Your
feedback is welcome, and is a valuable source of information which we use to continually improve these
products. Therefore we encourage you to contact EdgeTech Customer Service to offer any suggestions or
to request technical support:
E-mail: [e-mail]
Mail: 4 Little Brook Road
West Wareham, MA 02576
Telephone: [phone]
Facsimile: [phone]
24-Hour Emergency
Technical Support Line: [phone]
For more information please go to www.EdgeTech.com.

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4125 SIDE SCAN SONAR SYSTEM 0004823_REV_C
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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 45 years.
The company has responded to the needs of the scientific, Naval and offshore communities by providing
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 has also consistently anticipated and responded to future needs through an active research and
development program. Current efforts are focused on the application of cutting edge CHIRP, DS, and
acoustic technology.

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TABLE OF CONTENTS
WARNING – READ THIS FIRST!..................................................................................................................... iii
Radiation.................................................................................................................................................. iii
High Voltages ........................................................................................................................................... iii
Improper Line Voltage ............................................................................................................................. iii
HARDWARE VARIATIONS AND COMPATIBILITY........................................................................................... iv
PREFACE ........................................................................................................................................................ v
Purpose of this Manual............................................................................................................................. v
Summary of Sections ................................................................................................................................ v
Warnings, Cautions, and Notes................................................................................................................ vi
Liability..................................................................................................................................................... vi
WARRANTY STATEMENT............................................................................................................................. vii
SOFTWARE SERVICE OVERVIEW ................................................................................................................ viii
Software Updates and Enhancements................................................................................................... viii
RETURNED MATERIAL AUTHORIZATION...................................................................................................... ix
CUSTOMER SERVICE..................................................................................................................................... xi
COMPANY BACKGROUND........................................................................................................................... xii
TABLE OF CONTENTS...................................................................................................................................xiii
LIST OF FIGURES..........................................................................................................................................xix
LIST OF TABLES.............................................................................................................................................xx
SECTION 1: OVERVIEW .........................................................................................................................1-1
1.1 4125 Series Applications...............................................................................................................1-1
1.2 Main System Components............................................................................................................1-2
1.3 4125-P Portable Topside Processor ..............................................................................................1-2
1.4 Tow Vehicle...................................................................................................................................1-3
1.5 Tow Cable......................................................................................................................................1-6
1.6 Optional Equipment......................................................................................................................1-6
1.6.1 Additional Telemetry .................................................................................................1-6
1.6.2 Depressor Wing..........................................................................................................1-6
1.6.3 Keel Weight................................................................................................................1-7
1.6.4 HullScan W/O and W/ Telemetry Kits........................................................................1-7

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4125 SIDE SCAN SONAR SYSTEM 0004823_REV_C
1.6.5 Over the Side Option..................................................................................................1-7
SECTION 2: SPECIFICATIONS.................................................................................................................2-1
2.1 4125-P Portable Topside Processor ..............................................................................................2-1
2.1.1 Technical Descriptions of Internal Components........................................................2-2
2.2 4125 Tow Vehicle..........................................................................................................................2-6
2.3 Over the Side Mounting Option....................................................................................................2-9
2.4 Cables............................................................................................................................................2-9
SECTION 3: SETUP AND ACTIVATION ...................................................................................................3-1
3.1 Unpacking and Inspection.............................................................................................................3-1
3.2 Power Requirements ....................................................................................................................3-1
3.2.1 Use of an Uninterrupted Power Supply .....................................................................3-2
3.2.2 Changing a Non-US Power Plug .................................................................................3-2
3.3 Navigation Interface .....................................................................................................................3-2
3.4 Placement of the 4125-P Portable Topside Processor .................................................................3-2
3.5 Topside Controls and Indicators ...................................................................................................3-3
3.6 4125-P Portable Topside Processor Connections .........................................................................3-5
3.7 TCP/IP Address Settings................................................................................................................3-6
3.8 Assembling the 4125 Tow Vehicle ................................................................................................3-6
3.9 Connecting the System Components............................................................................................3-7
3.9.1 Connecting and Attaching the Tow Cable to the Tow Vehicle...................................3-8
3.9.2 Connecting the 4125-P Portable Topside Processor..................................................3-9
3.10 System Activation and Test......................................................................................3-10
3.10.1 Preparing a Wired ETHERNET LAN Connection .......................................................3-10
3.10.2 Preparing a Wireless ETHERNET LAN Connection....................................................3-11
3.10.3 Activating the 4125 Series System...........................................................................3-11
3.11 Performing Pre-deployment Checks ........................................................................3-12
3.12 Tow Vehicle Deployment .........................................................................................3-14
3.13 Tow Vehicle Recovery ..............................................................................................3-16
SECTION 4: MAINTENANCE ..................................................................................................................4-1
4.1 Cleaning the 4125-P Portable Topside Processor.........................................................................4-1
4.2 Inspecting and Cleaning the Connections.....................................................................................4-1
4.3 Re-arming the Tow Vehicle...........................................................................................................4-2

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SECTION 5: TROUBLESHOOTING ..........................................................................................................5-1
5.1 Restoring the Operating System to the Hard Drive ......................................................................5-1
5.2 Disassembling and Reassembling the Tow Vehicle ......................................................................5-1
5.2.1 Disassembly................................................................................................................5-2
5.2.2 Reassembly ................................................................................................................5-4
5.3 Calibrating the Compass ...............................................................................................................5-5
5.3.1 Entering the Known Magnetic Deviation ...................................................................5-5
5.3.2 Hard Iron Calibration.................................................................................................. 5-6
5.3.3 Soft Iron Calibration...................................................................................................5-8
5.4 General Troubleshooting ..............................................................................................................5-9
5.5 4125-P Portable Topside Processor Troubleshooting.................................................................5-10
5.6 4125 Tow Vehicle Troubleshooting ............................................................................................5-10
5.7 Tow Cable Inspection..................................................................................................................5-11
5.7.1 Locating a Shorted Conductor..................................................................................5-12
5.7.2 Locating an Open Conductor ...................................................................................5-12
5.7.3 Locating a Resistance Breakdown............................................................................5-13
5.7.4 Damaged Tow Cable Connector...............................................................................5-13
5.8 Part Numbers for Major Topside Components ..........................................................................5-13
5.9 Part Numbers for Major Tow Vehicle Components....................................................................5-14
APPENDIX A: BACKUP AND RESTORE..................................................................................................... A-1
A.1 Backing up the System Drive .................................................................................................... A-1
A.2 Restoring the System Drive ...................................................................................................... A-1
APPENDIX B: PRINTERS ...........................................................................................................................B-1
APPENDIX C: TOWING CHARACTERISTICS...............................................................................................C-1
C.1 4125 Standard Towfish Cable Layback Plots .............................................................................C-1
C.1.1 Config. 1: 4125, 207551 Cable - 50m Long........................................................................C-3
C.1.2 Config. 2: 4125, 207551 Cable - 100m Long......................................................................C-4
C.1.3 Config. 3: 4125, 207551 Cable - 150m Long......................................................................C-5
C.1.4 Config. 4: 4125 + 15 lb. Keel Weight, 207551 Cable - 50m Long.......................................C-6
C.1.5 Config. 5: 4125 + 15 lb. Keel Weight, 207551 Cable - 100m Long.....................................C-7
C.1.6 Config. 6: 4125 + 15 lb. Keel Weight, 207551 Cable - 150m Long.....................................C-8
C.1.7 Config. 7: 4125 + Depressor Wing, 207551 Cable - 50m Long ..........................................C-9

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C.1.8 Config. 8: 4125 + Depressor Wing, 207551 Cable - 100m Long ......................................C-10
C.1.9 Config. 9: 4125 + Depressor Wing, 207551 Cable - 150m Long ......................................C-11
C.1.10 Config. 10: 4125 + 15 lb. Keel Wt. + Dep. Wing, 207551 Cable - 50m ............................C-12
C.1.11 Config. 11: 4125 + 15 lb. Keel Wt. + Dep. Wing, 207551 Cable - 100m Long..................C-13
C.1.13 Config. 12: 4125 + 15 lb. Keel Wt. + Depressor Wing, 207551 Cable – 150m.................C-14
C.2 4125 Telemetry Towfish Cable Layback Plots .........................................................................C-15
C.2.1 Config. 1: 4125, 23080 Cable - 50m Long........................................................................C-19
C.2.2 Config. 2: 4125, 23080 Cable - 100m Long......................................................................C-20
C.2.3 Config. 3: 4125, 23080 Cable - 200m Long......................................................................C-21
C.2.4 Config. 4: 4125, 23080 Cable - 300m Long......................................................................C-22
C.2.5 Config. 5: 4125 + 15 lb. Keel Weight, 23080 Cable - 50m Long.......................................C-23
C.2.6 Config. 6: 4125 + 15 lb. Keel Weight, 23080 Cable - 100m Long.....................................C-24
C.2.7 Config. 7: 4125 + 15 lb. Keel Weight, 23080 Cable - 200m Long.....................................C-25
C.2.8 Config. 8: 4125 + 15 lb. Keel Weight, 23080 Cable - 300m Long.....................................C-26
C.2.9 Config. 9: 4125 + Depressor Wing, 23080 Cable - 50m Long ..........................................C-27
C.2.10 Config. 10: 4125 + Depressor Wing, 23080 Cable - 100m Long ......................................C-28
C.2.11 Config. 11: 4125 + Depressor Wing, 23080 Cable - 200m Long ......................................C-29
C.2.12 Config. 12: 4125 + Depressor Wing, 23080 Cable - 300m Long ......................................C-30
C.2.13 Config. 13: 4125 + 15 lb. Keel Wt. + Depressor Wing, 23080 Cable - 50m .....................C-31
C.2.14 Config. 14: 4125 + 15 lb. Keel Wt. + Depressor Wing, 23080 Cable – 100m...................C-32
C.2.15 Config. 15: 4125 + 15 lb. Keel Wt. + Depressor Wing, 23080 Cable - 200m ...................C-33
C.2.16 Config. 16: 4125 + 15 lb. Keel Wt. + Depressor Wing, 23080 Cable – 300m...................C-34
C.2.17 Config. 17: 4125, A304874 Cable - 50m Long .................................................................C-35
C.2.18 Config. 18: 4125, A304874 Cable - 100m Long ...............................................................C-36
C.2.19 Config. 19: 4125, A304874 Cable - 200m Long ...............................................................C-37
C.2.20 Config. 20: 4125, A304874 Cable - 300m* Long .............................................................C-38
C.2.21 Config. 21: 4125 + 15 lb. Keel Weight, A304874 Cable - 50m Long ................................C-39
C.2.22 Config. 22: 4125 + 15 lb. Keel Weight, A304874 Cable - 100m Long ..............................C-40
C.2.23 Config. 23: 4125 + 15 lb. Keel Weight, A304874 Cable - 200m Long ..............................C-41
C.2.24 Config. 24: 4125 + 15 lb. Keel Weight, A304874 Cable - 300m* Long ............................C-42
C.2.25 Config. 25: 4125 + Depressor Wing, A304874 Cable - 50m Long....................................C-43
C.2.26 Config. 26: 4125 + Depressor Wing, A304874 Cable - 100m Long..................................C-44

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C.2.27 Config. 27: 4125 + Depressor Wing, A304874 Cable - 200m Long..................................C-45
C.2.28 Config. 28: 4125 + Depressor Wing, A304874 Cable - 300m* Long................................C-46
C.2.29 Config. 29: 4125 + 15 lb. Keel Wt. + Depressor Wing, A304874 Cable - 50m .................C-47
C.2.30 Config. 30: 4125 + 15 lb. Keel Wt. + Dep. Wing, A304874 Cable - 100m ........................C-48
C.2.31 Config. 31: 4125 + 15 lb. Keel Wt. + Dep. Wing, A304874 Cable - 200m ........................C-49
C.2.32 Config. 32: 4125 + 15 lb. Keel Weight + Dep. Wing, A304874 Cable - 300m* ................C-50
C.2.33 Config. 33: 4125, A320327 Cable - 50m Long .................................................................C-51
C.2.34 Config. 34: 4125, A320327 Cable - 100m Long ...............................................................C-52
C.2.35 Config. 35: 4125, A320327 Cable - 200m Long ...............................................................C-53
C.2.36 Config. 36: 4125, A320327 Cable - 300m Long ...............................................................C-54
C.2.37 Config. 37: 4125, A320327 Cable - 400m Long ...............................................................C-55
C.2.38 Config. 38: 4125 + 15 lb. Keel Weight, A320327 Cable - 50m Long ................................C-56
C.2.39 Config. 39: 4125 + 15 lb. Keel Weight, A320327 Cable - 100m Long ..............................C-57
C.2.40 Config. 40: 4125 + 15 lb. Keel Weight, A320327 Cable - 200m Long ..............................C-58
C.2.41 Config. 41: 4125 + 15 lb. Keel Weight, A320327 Cable - 300m Long ..............................C-59
C.2.42 Config. 42: 4125 + 15 lb. Keel Weight, A320327 Cable - 400m Long ..............................C-60
C.2.43 Config. 43: 4125 + Depressor Wing, A320327 Cable - 50m Long....................................C-61
C.2.44 Config. 44: 4125 + Depressor Wing, A320327 Cable - 100m Long..................................C-62
C.2.45 Config. 45: 4125 + Depressor Wing, A320327 Cable - 200m Long..................................C-63
C.2.46 Config. 46: 4125 + Depressor Wing, A320327 Cable - 300m Long..................................C-64
C.2.47 Config. 47: 4125 + Depressor Wing, A320327 Cable - 400m Long..................................C-65
C.2.48 Config. 48: 4125 + 15 lb. Keel Wt. + Dep. Wing, A320327 Cable - 50m ..........................C-66
C.2.49 Config. 49: 4125 + 15 lb. Keel Wt. + Dep. Wing, A320327 Cable – 100m .......................C-67
C.2.50 Config. 50: 4125 + 15 lb. Keel Wt. + Dep. Wing, A320327 Cable - 200m ........................C-68
C.2.51 Config. 51: 4125 + 15 lb. Keel Wt. + Dep. Wing, A320327 Cable - 300m ........................C-69
C.2.52 Config. 52: 4125 + 15 lb. Keel Wt. + Dep. Wing, A320327 Cable - 400m ........................C-70
C.2.53 Config. 53: 4125, A302799 Cable - 50m Long .................................................................C-71
C.2.54 Config. 54: 4125, A302799 Cable - 100m Long ...............................................................C-72
C.2.55 Config. 55: 4125, A302799 Cable - 200m Long ...............................................................C-73
C.2.56 Config. 56: 4125, A302799 Cable - 300m Long ...............................................................C-74
C.2.57 Config. 57: 4125, A302799 Cable - 400m Long ...............................................................C-75
C.2.58 Config. 58: 4125, A302799 Cable - 500m Long ...............................................................C-76

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C.2.59 Config. 59: 4125, A302799 Cable - 600m Long ...............................................................C-77
C.2.60 Config. 60: 4125 + 15 lb. Keel Weight, A302799 Cable - 50m Long ................................C-78
C.2.61 Config. 61: 4125 + 15 lb. Keel Weight, A302799 Cable - 100m Long ..............................C-79
C.2.62 Config. 62: 4125 + 15 lb. Keel Weight, A302799 Cable - 200m Long ..............................C-80
C.2.63 Config. 63: 4125 + 15 lb. Keel Weight, A302799 Cable - 300m Long ..............................C-81
C.2.64 Config. 64: 4125 + 15 lb. Keel Weight, A302799 Cable - 400m Long ..............................C-82
C.2.65 Config. 65: 4125 + 15 lb. Keel Weight, A302799 Cable - 500m Long ..............................C-83
C.2.66 Config. 66: 4125 + 15 lb. Keel Weight, A302799 Cable - 600m Long ..............................C-84
C.2.67 Config. 67: 4125 + Depressor Wing, A302799 Cable - 50m Long....................................C-85
C.2.68 Config. 68: 4125 + Depressor Wing, A302799 Cable - 100m Long..................................C-86
C.2.69 Config. 69: 4125 + Depressor Wing, A302799 Cable - 200m Long..................................C-87
C.2.70 Config. 70: 4125 + Depressor Wing, A302799 Cable - 300m Long..................................C-88
C.2.71 Config. 71: 4125 + Depressor Wing, A302799 Cable - 400m Long..................................C-89
C.2.72 Config. 72: 4125 + Depressor Wing, A302799 Cable - 500m Long..................................C-90
C.2.73 Config. 73: 4125 + Depressor Wing, A302799 Cable - 600m Long..................................C-91
C.2.74 Config. 74: 4125 + 15 lb. Keel Wt. + Dep. Wing, A302799 Cable - 50m ..........................C-92
C.2.75 Config. 75: 4125 + 15 lb. Keel Wt. + Dep. Wing, A302799 Cable – 100m .......................C-93
C.2.76 Config. 76: 4125 + 15 lb. Keel Wt. + Dep. Wing, A302799 Cable - 200m ........................C-94
C.2.77 Config. 77: 4125 + 15 lb. Keel Wt. + Dep. Wing, A302799 Cable - 300m ........................C-95
C.2.78 Config. 78: 4125 + 15 lb. Keel Wt. + Dep. Wing, A302799 Cable - 400m ........................C-96
C.2.79 Config. 79: 4125 + 15 lb. Keel Wt. + Dep. Wing, A302799 Cable - 500m ........................C-97
C.2.80 Config. 80: 4125 + 15 lb. Keel Weight + Dep. Wing, A302799 Cable - 600m ..................C-98

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LIST OF FIGURES
Figure 1-1: Readying the Towfish for Deployment ....................................................................................1-2
Figure 1-2: 4125 Series Towfish, Topside, and Tow Cable.........................................................................1-5
Figure 1-3: Depressor Wing .......................................................................................................................1-6
Figure 2-1: 4125 Series Dual Frequency Side Scan Sonar System Overall Block Diagram.........................2-3
Figure 2-2: 4125-P Portable Topside Processor Wiring Diagram...............................................................2-4
Figure 2-3: 4125 Portable Topside Processor Chassis................................................................................2-5
Figure 2-4: Kevlar Reinforced Tow Cable.................................................................................................2-10
Figure 2-5: Kevlar Reinforced Tow Cable, Telemetry ..............................................................................2-11
Figure 2-6: AC Power Cable......................................................................................................................2-12
Figure 2-7: DC Power Cable .....................................................................................................................2-13
Figure 2-8: ETHERNET Cable ....................................................................................................................2-14
Figure 3-1: 4125-P Portable Topside Processor Side Panel .......................................................................3-4
Figure 3-2: 4125 Tow Vehicle Tail Fins Assembly ......................................................................................3-7
Figure 3-3: AC Power, DC Power, and ETHERNET Cables ..........................................................................3-8
Figure 3-4: Tow Vehicle with Tow Cable Connected and Attached...........................................................3-9
Figure 3-5: DISCOVER 4125 Towfish Control Tab ....................................................................................3-12
Figure 3-6: Rub Test being Performed .....................................................................................................3-13
Figure 3-7: Rub Test Screen Shot .............................................................................................................3-13
Figure 3-8: 4125 Tow Vehicle being Deployed ........................................................................................3-15
Figure 3-9: Bottom Track Tab...................................................................................................................3-16
Figure 5-1: Tow Vehicle Parts of Note .......................................................................................................5-2
Figure 5-2: Electronics Bottle and Transducer Array Sections Separated .................................................5-2
Figure 5-3: Cables Disconnected from the Electronics Bottle ...................................................................5-3
Figure 5-4: Removing the Phillips Head Screws from the Electronics Bottle.............................................5-3
Figure 5-5: Removing the Electronics Chassis from the Electronics Bottle ...............................................5-4
Figure 5-6: The COM3 Window in Hyper Terminal....................................................................................5-7
Figure 5-7: Hard Iron X Y Calibration Complete.........................................................................................5-7
Figure 5-8: Hard Iron Z Calibration Complete............................................................................................5-8
Figure 5-9: Soft Iron Calibration Screen Prompts ......................................................................................5-9

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4125 SIDE SCAN SONAR SYSTEM 0004823_REV_C
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LIST OF TABLES
Table 2-1: 4125-P Portable Topside Processor ..........................................................................................2-2
Table 2-2: Tow Vehicle Specifications........................................................................................................2-8
Table 3-1: AC Power Cord Wiring ..............................................................................................................3-2
Table 3-2: Topside Processor or ETHERNET Devices TCP/IP Addresses ....................................................3-6
Table 3-3: Tow Vehicle ETHERNET Devices IP Addresses ..........................................................................3-6
Table 5-1: Topside Processor System Troubleshooting Guide ................................................................5-10
Table 5-2: 4125 Tow Vehicle Troubleshooting Guide..............................................................................5-11
Table 5-3: Part Numbers for Major 4125-P Topside Processor Components..........................................5-14
Table 5-4: Part Numbers for Major 4125 Tow Vehicle Components.......................................................5-15