Edgetech 3100-P Hardware Manual

EdgeTech

3100-P PORTABLE SUB-BOTTOM

USER HARDWARE MANUAL

0004802_REV_F 7/2/2018

4 Little Brook Road

West Wareham, MA 02576

Tel: [phone]

Fax: [phone]

www.EdgeTech.com

ii

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 2015 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.

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

iii

ATTENTION – 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 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 the use of anti­static 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

HARDWARE VARIATIONS AND COMPATIBILITY

The 3100-P PORTABLE SUB-BOTTOM contains both standard 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 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 time of delivery. Upgrades will be
made available when these features are implemented.

Contact E

DGETECH CUSTOMER SERVICE with any questions relating to compatibility.

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

v

REVISION

DESCRIPTION

DATE

APPROVAL

A

Release to Production

N/A

RM B N/A

N/A

RM C N/A

01/2014

TS D Updates

02/05/2015

TS E Updated Images, content, and diagrams

10/04/2017

TS F Updates to Drawings

07/02/2018

TS

ABOUT THIS DOCUMENT

We, the employees at EdgeTech, would like to thank you for purchasing 3100-P. 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 setup and use of EdgeTech’s
3100-P. Although this manual encompasses the latest operational features of the 3100-P, 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 3100-P 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
equipment, and to make changes to this manual, without notice at any time.

Revision History

vi

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.

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

vii

SOFTWARE SERVICE OVERVIEW

EdgeTech provides software services free of charge. This software agreement does not address customer­specified 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 ftp site. Major software issues, should they occur, 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 on-line help

• Tests for compatibility with other modules

Software patches consist of software that has undergone the following:

• Minor software enhancements

• Software fixes and changes

• Software Telephone, Facsimile, and E-mail Support

EdgeTech customers are entitled to contact E
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:

• Respond within 24 hours

• Immediately attend to serious problems affecting operations

• Attempt to find an immediate work-around

DGETECH CUSTOMER SERVICE by telephone, facsimile, or e-mail

viii

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 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.

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."

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 responsibility of the customer,

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.

Signed ______________________________

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

ix

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]

NOTE: Please have your system Serial Number available when contacting

Customer Service.

For more information please go to www.EdgeTech.com.

x

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.

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 and acoustic
technology.

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

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 .............................................................................................................................. xiv

LIST OF TABLES ............................................................................................................................... xvi

SECTION 1: OVERVIEW ..................................................................................................................1-1

1.1 Advantages of Full Spectrum Chirp Technology ........................................................................... 1-1

1.1.1 Separate Acoustic Projectors and Receivers .......................................................................... 1-1

1.1.2 High Repeatability .................................................................................................................. 1-2

1.1.3 High Signal-to-Noise Ratio ...................................................................................................... 1-2

1.1.4 High Resolution ...................................................................................................................... 1-2

1.1.5 Additional Processing Gain ..................................................................................................... 1-2

1.1.6 Gaussian Shaped Amplitude Spectrum Outgoing Pulse ......................................................... 1-3

1.1.7 Reduction of Side Lobes ......................................................................................................... 1-3

1.2 Full Spectrum Chirp Technology Applications .............................................................................. 1-3

1.2.1 3100-P Portable Topside ........................................................................................................ 1-4

1.2.2 SB-424 and SB-216S Tow Vehicles ......................................................................................... 1-6

1.2.3 35-Meter Kevlar Reinforced Tow Cable ................................................................................. 1-7

SECTION 2: SPECIFICATIONS ..........................................................................................................2-1

xii

2.1.1 3100-P Portable Topside ........................................................................................................ 2-1

2.1.1.1 General Specifications .................................................................................................... 2-1

2.1.1.2 3100-P Power Requirements ......................................................................................... 2-1

2.1.1.3 3100-P Laptop Specifications ......................................................................................... 2-2

2.1.1.4 Interface between 3100-P and Laptop Computer ......................................................... 2-2

2.1.2 Tiger Board Description .......................................................................................................... 2-2

2.1.2.1 Carrier Board .................................................................................................................. 2-2

2.1.2.2 Acquisition Board ........................................................................................................... 2-3

2.1.2.3 Sonar/IDE Board ............................................................................................................. 2-3

2.1.3 SB-424 and SB-216S ................................................................................................................ 2-6

2.2 Mechanical Drawings .................................................................................................................... 2-7

2.2.1 35-Meter Kevlar Reinforced Tow Cable Specifications ........................................................ 2-10

SECTION 3: SETUP AND ACTIVATION ..............................................................................................3-1

3.1 Unpacking and Inspection ............................................................................................................. 3-1

3.2 Power Requirements .................................................................................................................... 3-2

3.2.1 Use of an Uninterruptable Power Supply............................................................................... 3-2

3.2.2 Changing to a Non-US Power Plug ......................................................................................... 3-2

3.3 Navigation Interface ..................................................................................................................... 3-2

3.4 3100-P Portable Topside Placement ............................................................................................. 3-3

3.5 Topside Controls and Indicators ................................................................................................... 3-3

3.6 Topside Connections ..................................................................................................................... 3-5

3.7 Connecting the System Components ............................................................................................ 3-5

3.7.1 Connecting and Attaching the Tow Cable to the Tow Vehicle ............................................... 3-5

3.7.2 3100-P Portable Topside Connection and Activation............................................................. 3-7

3.7.2.1 Connecting ..................................................................................................................... 3-7

3.7.2.2 Making an Ethernet Connection .................................................................................... 3-7

3.7.2.3 Activating The System .................................................................................................. 3-10

3.8 Pre-Deployment Tests................................................................................................................. 3-11

3.9 Tow Vehicle Deployment ............................................................................................................ 3-15

3.9.1 Obtaining the Best Sonar Imagery When Towing ................................................................ 3-15

3.9.2 Conducting Sediment Classification Surveys When Towing ................................................ 3-16

SECTION 4: MAINTENANCE ............................................................................................................4-1

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

xiii

4.1 Portable Topside ........................................................................................................................... 4-1

4.2 Cleaning the Tow Vehicle and Tow Cable after Use ..................................................................... 4-1

4.3 Inspecting and Cleaning the Underwater Connectors .................................................................. 4-1

4.4 Storage .......................................................................................................................................... 4-2

4.5 Restoring the Operating System ................................................................................................... 4-2

4.6 Disassembling and Reassembling a Tow Vehicle .......................................................................... 4-2

4.6.1 Disassembling a Tow Vehicle ................................................................................................. 4-4

4.6.2 Reassembling a Tow Vehicle .................................................................................................. 4-6

SECTION 5: TROUBLESHOOTING ....................................................................................................5-1

5.1 3100-P Portable Topside Troubleshooting ................................................................................... 5-2

5.2 Wiring and Connector Pin out Drawings ...................................................................................... 5-3

APPENDIX A: SYSTEM RESTORE .................................................................................................. A-10

xiv

LIST OF FIGURES

Figure 1-1: 3100-P Portable Topside Open with Laptop ............................................................................ 1-5

Figure 1-2: 3100-P Portable Topside Internal Components ...................................................................... 1-5

Figure 1-3: SB-424 and SB-216S Tow Vehicles ........................................................................................... 1-6

Figure 1-4: 35-Meter Kevlar Reinforced Tow Cable ................................................................................... 1-7

Figure 2-1: Tiger Board Set: Carrier (Front view) – 0006013 ..................................................................... 2-3

Figure 2-2: Tiger Board Set: Carrier (Rear View) – 0006013 ...................................................................... 2-4

Figure 2-3: Tiger Board Set: Acquisition PCB - 0014231 ............................................................................ 2-4

Figure 2-4: Tiger Board Set: SIBU aka Sonar Interface Board – 0011637 .................................................. 2-5

Figure 2-5: SB-216 Towfish Outline Drawing ............................................................................................. 2-8

Figure 2-6: SB-424 Towfish Outline Drawing ............................................................................................. 2-9

Figure 3-1: 3100-P Portable Topside Side Panel ........................................................................................ 3-4

Figure 3-2: Reinforced Cable Attached to SB-216S Tow Vehicle ............................................................... 3-6

Figure 3-3: Recommended Method for Dressing and Strain Relieving Tow Cable .................................... 3-6

Figure 3-4: 3100-P Network Configuration Diagram ................................................................................. 3-8

Figure 3-5: Wireless TCP/IP Address .......................................................................................................... 3-9

Figure 3-6: Portable Processor Case Interface ......................................................................................... 3-10

Figure 3-7: The DISCOVER Sub-Bottom Main Window ............................................................................ 3-12

Figure 3-8: Successful Self-Test ................................................................................................................ 3-12

Figure 3-9: NET: ON .................................................................................................................................. 3-13

Figure 3-10: The Sub-Bottom Control Tab ............................................................................................... 3-13

Figure 3-11: Tap Test................................................................................................................................ 3-14

Figure 4-1: SB-424 and SB-216S Tow Vehicle Internals ............................................................................. 4-3

Figure 4-2: Retaining Ring and Locking Sleeve Removed .......................................................................... 4-4

Figure 4-3: Male Connector ....................................................................................................................... 4-4

Figure 4-4: Removing the 7/16-Inch Bolts Securing the Teardrop Cover to the Tow Vehicle ................... 4-5

Figure 4-5: Removing the Teardrop Cover ................................................................................................. 4-5

Figure 4-6: Teardrop Cover Removed ........................................................................................................ 4-6

Figure 4-7: Removing 7/16 and ½ Inch Bolts and Nuts .............................................................................. 4-6

Figure 5-1: 35M Tow Cable Diagram – 0002899 ........................................................................................ 5-4

Figure 5-2: 3100-P Topside Interconnect – 0004674 ................................................................................. 5-5

Figure 5-3: Wiring Diagram, Spider Box, SB-424 Tow Vehicle ................................................................... 5-6

Figure 5-4: Wiring Diagram, SB-424 Tow Vehicle ...................................................................................... 5-7

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

xv

Figure 5-5: Wiring Diagram, Spider Box, SB-216S Tow Vehicle ................................................................. 5-8

Figure 5-6: Wiring Diagram, SB-216S Tow Vehicle .................................................................................... 5-9

xvi

LIST OF TABLES

Table 2-1: General Specs for 3100-P Portable Topside ............................................................................. 2-1

Table 2-2: Power Requirements ................................................................................................................ 2-1

Table 2-3: Laptop Specifications ................................................................................................................ 2-2

Table 2-4: 3100-P / Notebook Computer Interface ................................................................................... 2-2

Table 2-5: Tow Vehicle Specifications ........................................................................................................ 2-6

Table 2-6: 35-Meter Kevlar Reinforced Tow Cable Specifications ........................................................... 2-10

Table 3-1: AC Power Cord Wiring .............................................................................................................. 3-2

Table 5-1: 3100-P Portable Topside Troubleshooting ............................................................................... 5-3

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

1-1

SECTION 1: OVERVIEW

The 3100-P Sub-Bottom Profiling System is a lightweight, portable, high resolution wideband frequency
modulated (FM) sub-bottom profiler that uses EdgeTech’s proprietary Full Spectrum chirp technology to
generate cross-sectional images of the seabed and collect digital normal incidence reflection data over
many frequency ranges. The 3100-P transmits an FM pulse (also called a "chirp pulse") that is linearly
swept over a full spectrum frequency range.

The reflections measured by the system are displayed as shades of gray or color on a computer monitor
and may be printed on a continuous feed thermal printer. Data are stored in real time onto a large capacity
hard drive and can be archived to a DVD.

1.1 Advantages of Full Spectrum Chirp Technology

EdgeTech's Full Spectrum chirp technology has several distinct advantages over conventional sub-bottom
profiling systems: The use of separate acoustic projectors and receivers enable:

• Simultaneous transmission and reception of acoustic signals

• High repeatability of the transmitted signals to enable sediment classification,

• High signal-to-noise ratio (SNR) for improved acoustic imagery

• High resolution for measurement of fine sediment layering

• Additional processing gain for energy efficiency

• Gaussian shaped amplitude spectrum of the outgoing pulse to preserve resolution with sediment

penetration

• Reduction of side lobes for minimal destructive signal scattering caused by the sediment when

profiling near the bottom.

1.1.1 Separate Acoustic Projectors and Receivers

The 3100-P Sub-Bottom Profiling System uses acoustic projectors and receivers mounted in a towed
vehicle to transmit and receive acoustic FM pulse signals. The projectors are wide band piston type
transducers, and the receivers are hydrophone arrays composed of lead zirconate titanate (PZT) crystals.
The transducers are mounted in the forward section of the tow vehicle, and the hydrophone arrays, which
are designed for profiling at ship speeds up to seven knots, are mounted aft.

The use of separate transmitting transducers and receiving hydrophone arrays preserves linearity, and
allows the simultaneous transmission and reception of the acoustic signals. The transducers and
hydrophone arrays are mounted beneath acoustic baffles, which minimize direct path, tow vehicle, and
surface reflections. A preamplifier in the tow vehicle amplifies and drives the received signals through a
tow cable to the surface.

SECTION 1: OVERVIEW 1-2

1.1.2 High Repeatability

The FM pulses are generated by a digital-to-analog (D/A) converter with a wide dynamic range and a
transmitter with linear components. This allows the energy, amplitude, and phase characteristics of the
acoustic pulses to be precisely controlled. This precision produces high repeatability and signal definition
required for sediment classification.

The frequency range of operation is determined by the acoustic characteristics of the transmitter
transducers and receiving hydrophone arrays mounted on the tow vehicle. Each tow vehicle can transmit
acoustic pulses with different center frequencies and bandwidths.

The selection of this frequency is made by the operator while profiling to achieve the best imagery, and
the tow vehicle is selected based on the sub-bottom conditions at the survey site, along with the type of
sub-bottom features that need to be imaged. EdgeTech technical support can provide assistance in
selecting the best tow vehicle for your application.

1.1.3 High Signal-to-Noise Ratio

Full Spectrum chirp technology does not use a conventional matched filter (the correlation filter that is
widely used to compress FM signals) to process wide band signals. Rather it uses proprietary amplitude
and phase weighting functions for the transmitted pulse and a pulse compression filter that maximizes
the SNR of the acoustic images over a wide band of operating frequencies. These functions provide a
significant SNR improvement in the acoustic image over other pulse and chirp sonars with band limited
components that are limited in dynamic range.

1.1.4 High Resolution

Signals received at the surface from the hydrophone arrays in the tow vehicle pass through a software­controlled, programmable, gain amplifier before being digitized with a 16-bit analog-to-digital (A/D)
converter at a sampling rate of 20, 25, 40, or 50 kHz The FM pulse is then compressed using a digital
compression filter. This correlation process is implemented in real time with forward and inverse Fast
Fourier Transforms.

The compressed pulse has a time duration approximately equal to the inverse of the bandwidth of the FM
pulse which results in a high temporal resolution. This high resolution enables the measurement of fine
layering in the sediment, an important factor in sediment classification, as it provides a more realistic
picture of the true geologic variability of the sea floor and an accurate determination of the depositional
processes.

1.1.5 Additional Processing Gain

In addition to the resolution improvement, correlation processing achieves a signal processing gain over
the background noise. This gain is approximately ten times the log of the time-bandwidth product.

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

1-3

This improvement is due to the signal having a time duration longer than the inverse of the bandwidth,
thus increasing signal energy without increasing the power of the outgoing pulse. To equal the typical
performance of the full spectrum sonar pulse, conventional pulse sonar would have to operate at a peak
pulse power of 100 times greater than a full spectrum pulse with a time-bandwidth product of 100.

1.1.6 Gaussian Shaped Amplitude Spectrum Outgoing Pulse

Another important feature of Full Spectrum chirp technology is that the signal processing optimizes the
performance of the system. The sonar contains many components, each with a unique dynamic range and
linearity characteristic, which are frequency dependent.

In addition to this characteristic, the amplitude spectrum of the outgoing pulse is chosen to be
approximately Gaussian in shape to limit the side lobe level and temporal resolution losses due to
attenuation. As a wavelet with a Gaussian shaped spectrum is attenuated by the sediment, energy is lost
but its bandwidth is nearly preserved. Therefore, even after being attenuated by sand, the acoustic pulse
has approximately the same resolution as an unattenuated pulse.

1.1.7 Reduction of Side Lobes

Use of Full Spectrum chirp technology reduces the side lobes in the effective transducer aperture. The
wide bandwidth of the sweep frequency has the effect of smearing the side lobes of the transducer and
thus achieving a beam pattern with virtually no side lobes. The effective spatial beam width obtained after
processing a full spectrum 2–10 kHz signal, for example is 20 degrees measured at the -3db points.

1.2 Full Spectrum Chirp Technology Applications

Applications of the Full Spectrum Chirp Technology used in the 3100-P Sub-Bottom Profiling System
include:

• EEZ resource development

• Imaging fluidized mud to a resolution of 8 cm

• Sediment classification

• Buried pipeline and cable location and routing

• Dredging studies for inlets

• Scour/erosion surveys in rivers and streams

• Marine geotechnical surveys

• Bridge erosion surveys

• Hazardous waste target location

• Geological surveys

• Archeological surveys

SECTION 1: OVERVIEW 1-4

• Hazard surveys

• Mining and dredging surveys

• Bridge and shoreline scour surveys

• Imaging biologics in water column

• Mapping clam populations

• Beach re-nourishment

• Military and offshore oil applications

• Full ocean depth sub-bottom imaging (hull mount systems)

• Environmental site investigations

1.2.1 3100-P Portable Topside

The 3100-P Portable Topside has its electronics housed in a heavy-duty case that is watertight when
closed. The case also holds a provided laptop computer that runs the DISCOVER acquisition software

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.

FIGURE 1-1 and FIGURE 1-2 display the portable topside and its internal components.

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

1-5

Power Supply

Tiger Board

Laptop

Water-Resistant

Main Power Board

(when closed) Case

(under aluminum plate)

Figure 1-1: 3100-P Portable Topside Open with Laptop

Figure 1-2: 3100-P Portable Topside Internal Components

SECTION 1: OVERVIEW 1-6

SB-424 Tow Vehicle

SB-216S Tow Vehicle

1.2.2 SB-424 and SB-216S Tow Vehicles

The SB-424 and SB-512i Tow Vehicles are each designed to operate over a specific frequency range, and
as lower operating frequencies generally require longer hydrophone arrays and larger transducers, the
vehicles differ primarily in size and weight.

The SB-424 Tow Vehicle, which is the smaller of the two, operates over a frequency range of 4–24 kHz,
while the SB-216S operates at 2–16 kHz. Both vehicles are displayed in F
hydrodynamically stable, with the transducers and hydrophone arrays mounted under an acoustic baffle
to reject downward traveling multiple echoes. These components, along with "spider" cable harnesses
and a preamplifier, are enclosed in a two-piece fiberglass shell that is fitted with stabilizing fins and lead
ballast.

A hinged U-framed tow bridle is used for towing, and the tow point location can be adjusted to
accommodate different towing speeds and depths. The tow vehicles are each shipped in a wooden crate.

IGURE 1-3. The two vehicles are

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

Figure 1-3: SB-424 and SB-216S Tow Vehicles

1-7

1.2.3 35-Meter Kevlar Reinforced Tow Cable

The 3100-P system comes standard with a 35 Meter Tow Cable, shown in FIGURE 1-4. The cable is Kevlar
Reinforced, and includes three twisted shielded wire pairs. This cable is used to connect to and tow the
SB-424 and SB-216S Tow Vehicles.

A steel cable can be attached to the tow cable to increase the life of the tow cable, which has a tensile
strength of 650 pounds

The tow cable includes a cable grip for attaching to the tow bridle of the tow vehicle and is shipped in a
wooden crate with the tow vehicle.

The system can handle a maximum length of 100 meters of tow cable. For more information on additional
tow cable options, contact E

DGETECH CUSTOMER SERVICE.

Figure 1-4: 35-Meter Kevlar Reinforced Tow Cable

2-1

SPECIFICATION

VALUE

Size

390 D x 490 W x 190 H (mm), 15.2 D x 19.2 W x 7.3 H (inches)

Weight

13 kg (30 lbs) with jetBook Computer,
10 kg (22 lbs) without jetBook Computer

Construction

High-impact structural polypropylene

Color

Yellow

Sealing

Watertight cover O-ring seal with purge valve

Open Cover Operating Temperature

0°C to 40°C (32°F to 104°F) (shade conditions)

Storage Temperature

-20°C to 60°C (-4°F to 140°F)

Relative Humidity

Operating 0 to 80% (non-condensing), Non-operating 0 to 100%

SPECIFICATION

VALUE

DC Input

12 to 15 VDC

AC Input

120/240 VAC (Auto-Ranging)

Peak Power (on start-up)

300 Watts 20 Amps at 12 VDC / 2 Amps at 120 VAC

Average Operating Power

48 Watts 4 Amps at 12 VDC 0.4 Amps at 120 VAC

SECTION 2: SPECIFICATIONS

The specifications for the 3100-P Sub-Bottom Profiling System include electrical, mechanical, and
environmental characteristics for the Portable Topside Processor, Laptop, SB-424 and SB-216S Tow
Vehicles, and the 35-Meter Kevlar Reinforced Tow Cable.

NOTE: All specifications are subject to change without notice.

2.1.1 3100-P Portable Topside

Specifications for the 3100-P Portable Topside are as follows:

2.1.1.1 General Specifications

The general specifications for the 3100-P Portable Topside processor are shown in TABLE 2-1.

Table 2-1: General Specs for 3100-P Portable Topside

2.1.1.2 3100-P Power Requirements

The 3100-P Power Requirements are listed in TABLE 2-2.

Table 2-2: Power Requirements

SECTION 2: SPECIFICATIONS 2-2

SPECIFICATION

VALUE

Notebook Computer

Jetta SR JetBook, or equivalent

Operating System

Windows 7, 64 Bit

Processor

I7, 2.8GHZ Quad Core

Memory

4 GB, 1333 MHZ

Hard Drive

500 Gigabytes

Screen Size

15.6” – 1280 x 800 typical

Wireless

Windows 7 64 BIT CENTRINO 802.11 BGN 2x2 or Comparable

SPECIFICATION

VALUE

Ethernet LAN

100BaseT, TCP/IP Wireless

Wireless LAN

802.11 b/g

2.1.1.3 3100-P Laptop Specifications

The 3100-P Laptop specifications are in TABLE 2-3.

Table 2-3: Laptop Specifications

2.1.1.4 Interface between 3100-P and Laptop Computer

The specifications for the interface between the 3100-P / Notebook computer are in TABLE 2-4.

Table 2-4: 3100-P / Notebook Computer Interface

2.1.2 Tiger Board Description

The Sonar Interface board (Tiger board) is the real-time controller for sonar processing. It includes
transmit waveform tables and multiple channels of 10-bit high speed digital-to-analog (D/A) converters,
support for external and internal triggers, and support for multiple sonar analog-to-digital (A/D)
converters.

The Tiger board was designed to support a combined sonar system (with both sub-bottom as well as multi­frequency side-scan capability), or to be used single channel as a basic sub-bottom controller. At periodic
intervals the board generates the transmit waveform(s), and it continuously buffers ADC data.

The Tiger board represents a new generation of re-engineered and optimized sonar electronics. It is
designed to address a broad spectrum of sonar applications from a common and well tested base of
components. Among the features of this generation are lower power consumption, higher speeds, smaller
form factors, and high analog sensitivity-to-minimum noise electronics for improved operating ranges.

The Tiger board is actually composed of a set of three boards as shown in F
Acquisition board, and a Sonar/IDE board. All three boards are connected electrically and mechanically as
a single assembly that plugs into the Mother board PCI slot.

IGURE 2-1: a Carrier board, an

2.1.2.1 Carrier Board

This board has the same physical size as an industry standard full slot PCI card. There are two BNC
connectors, TRIGGER IN and TRIGGER OUT, and female connectors on either side for mating with the

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

2-3

other two boards in the board set. An onboard DC/DC converter provides +12 VDC to the preamplifier in
the tow vehicle.

2.1.2.2 Acquisition Board

The Acquisition board contains band pass filtering and up to eight 24-bit A/D converters, where only two
channels are used. The first channel is for the received acoustic data from the preamplifier, and the second
channel is used for power-up diagnostics.

2.1.2.3 Sonar/IDE Board

The sonar/IDE board is composed of two RAM memories, an acquisition memory and a chirp memory,
and six 10-bit D/A converters for generating transmit waveforms. The transmit ping rate and sampling
clock are generated from this board. The IDE portion of the board provides the interfacing circuitry
required to communicate between the Mother board and the Tiger board.

Figure 2-1: Tiger Board Set: Carrier (Front view) – 0006013

SECTION 2: SPECIFICATIONS 2-4

Figure 2-2: Tiger Board Set: Carrier (Rear View) – 0006013

Figure 2-3: Tiger Board Set: Acquisition PCB - 0014231

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

2-5

Figure 2-4: Tiger Board Set: SIBU aka Sonar Interface Board – 0011637

SECTION 2: SPECIFICATIONS 2-6

Frequency range

4-24 kHz

2-16 kHz

Pulse type

FM

FM

4-16 kHz/10 ms

2-10 kHz/20 ms

4 cm (4–24 kHz)

8 cm (4–16 kHz)

6 cm (2–15 kHz)

10 cm (2–10 kHz)

Penetration in course and
calcareous sandb

Penetration in soft clayb

40 m

80 m

16°, 4–24 kHz

23°, 4–16 kHz

17°, 2–15 kHz

24°, 2–10 kHz

<7°, 4–24 kHz

<10°, 4–16 kHz

<7°, 2–15 kHz

<10°, 2–10 kHz

Optimum tow height

3-5m above sea floor

3-5 m above sea floor

Transmitters

1 1 Receive arrays

2 2 Output power

2000 W

2000W

34 cm (13 in.) H

46 cm (18 in.) H

91 cm (36 in.) L

64 cm (25 in.) H

117 cm (46 in.) L

61 cm (24 in.) H

Weight in air

35 kg (78 lb)

72 kg (160 lb)

Shipping weight

110 kg (243 lb)

162 kg (357 lb)

Tow cable requirements

3 shield-twisted wire pairs

3 shield-twisted wire pairs

Depth rating

300 m (984 ft) max

300 m (984 ft) max

2.1.3 SB-424 and SB-216S

The general specifications for the SB-424 and SB-216S Tow Vehicles are show in TABLE 2-5.

SPECIFICATION SB-424 VALUE SB-216S VALUE

Pulse bandwidth/pulse length

Calibration

Vertical resolutiona

Beam width

Optimum tow vehicle pitch/rollc

Tow vehicle size

4-24 kHz/10 ms
4-20 kHz/10 ms

Gaussian-shaped pulse spectrum Gaussian-shaped pulse spectrum

6 cm (4–20 kHz)

2 m (typ) 6 m (typ)

19°, 4–20 kHz

<8°, 4–20 kHz

77 cm (30 in.) L
50 cm (20 in.) W

2-15 kHz/20 ms
2-12 kHz/20 ms

8 cm (2–12 kHz)

20°, 2–12 kHz

<8°, 2–12 kHz

105 cm (41 in.)
67 cm (26 in.) W

Shipping container size

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

66 cm (26 in.) W

Table 2-5: Tow Vehicle Specifications

79 cm (31 in.) W

2-7

a. Vertical resolution is the smallest distinguishable distance between the peaks of two reflections

that can be displayed on the screen as separate reflectors. Sound energy is reflected back to the
sonar system when the transmitted pulse encounters a change in density. The resolution of a
sonar system is measured by its ability to distinguish between two adjacent targets. The vertical
resolution is dependent on the transmitted chirp pulse bandwidth. It is theoretically calculated by
the product of the transmitted pulse length (inverse of the bandwidth) and half the speed of
sound in water (approximately 750 m/s). For example, a full bandwidth pulse from an SB-424 Tow
Vehicle has a vertical resolution of 3.75 cm (1/20,000 x 750).

b. The value for sub-bottom penetration is the maximum distance beneath the sea floor that a step

change of 10% in density can be seen on the sub-bottom display. This assumes that the sediment
is gas free (no organic materials), that the lowest frequency of the pulse spectrum is transmitted
and that the vehicle is within 5 meters of the seabed (range for maximum penetration). Lower
frequencies reduce attenuation (absorption of sound). Towing the vehicle close to the sea floor
reduces the acoustic footprint thereby reducing scattering (interfering reflections) from the sea
floor and within the sediments.

c. At the -3 dB points, depending on the center frequency.

2.2 Mechanical Drawings

The following pages contains Drawings for the SB-216 and SB-424.

SECTION 2: SPECIFICATIONS 2-8

Figure 2-5: SB-216 Towfish Outline Drawing

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

2-9

Figure 2-6: SB-424 Towfish Outline Drawing

SECTION 2: SPECIFICATIONS 2-10

2.2.1 35-Meter Kevlar Reinforced Tow Cable Specifications

The general specifications for the 35-Meter Kevlar Reinforced Tow Cable are shown in TABLE 2-6.

SPECIFICATION VALUE

Twisted-shielded wire pairs:

Breaking strength:

Working strength:

Weight in air:

Voltage rating:

Bending radius:

Length:

(1) # 16 AWG

(2) # 20 AWG

1,500 kg (3,300 lb) minimum

300 kg (660 lb)

94 kg/100 m (207 lb/1000 ft)

600 volts

25 cm (10 in.) minimum

35 m (115 ft) standard

Table 2-6: 35-Meter Kevlar Reinforced Tow Cable Specifications

NOTE: Cables do not come standard with the system and must be

specified upon purchase. For more information about cable options,
contact EDGETECH CUSTOMER SERVICE.

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

3-1

SECTION 3: SETUP AND ACTIVATION

Setup and test of the EdgeTech 3100-P Sub-Bottom Profiling System involves:

1. Unpacking, inspecting, and connecting the system components.

2. Connecting a navigation system and external sonar systems if required

3. Activating the system

4. Verifying operation using the EdgeTech DISCOVER SB software.

This section provides instructions on how to perform these tasks, as well as information on how to deploy
and tow the tow vehicle.

3.1 Unpacking and Inspection

The 3100-P Portable Topside; SB-424 or SB-216S Tow Vehicle; and 35-Meter Kevlar-Reinforced Tow Cable
are shipped in separate, reusable, heavy-duty transport cases. Essential cables and documentation are
also included.

Before unpacking the system components, inspect the shipping containers for any damage. Report any
damage to the carrier and to EdgeTech. If the shipping containers appear free of damage, carefully unpack
the components, and inspect them for damage. Also check the packing list and verify that all the items on
the list are included.

Again, if any damage is found, report it to the carrier and to EdgeTech. If any items are missing,
immediately contact EdgeTech. Do not install or operate any equipment that appears to be damaged.

Although the items shipped may vary, depending on the customer requirements, the 3100-P Sub-Bottom
Profiling System typically includes the following:

• 3100-P Portable Topside

• Laptop Computer

• SB-424 or SB-216S Tow Vehicle

• 35-Meter Kevlar Reinforced Tow Cable

• AC power cords (1)

• DC power / Ethernet cable

• Recovery thumb drive

• Software CDs and Electronic Manuals

• Consumables kit

After unpacking the system components, be sure to safely store the shipping containers, including any
packing materials, for later use. When transporting or storing the system, all items should be packed in

3-2 SECTION 3: SETUP AND ACTIVATION

their original shipping containers in the same way they were originally shipped, and always store the
system in a dry environment when not in use.

3.2 Power Requirements

The 3100-P power requirements are 120–220 VAC, 50/60 Hz or a 12 to 15 VDC power supply. The input
voltage is auto sensing.

3.2.1 Use of an Uninterruptable Power Supply

The power source should be continuously free of high amplitude, high frequency transients, as this type
of interference could cause degraded performance or damage to the equipment. An uninterruptable
power supply (UPS) with power surge protection is recommended for powering the equipment.

However, whether or not a UPS is used, the power source should never be the same as that being used to
power electric motors, such as pumps and winches, on the survey vessel.

3.2.2 Changing to a Non-US Power Plug

An AC power cord is provided for connecting the 3100-P Portable Topside to a standard U.S. 3-pronged
outlet. For non-U.S. power outlets, you can modify this cord by cutting off the 3-pronged plug and
attaching the appropriate plug. Refer to Table 3-1 for connection information.

AC POWER CORD WIRE COLOR FUNCTION

Black AC line

White AC neutral

Green Earth ground

Table 3-1: AC Power Cord Wiring

3.3 Navigation Interface

The 3100-P Sub-Bottom Profiling System accepts all standard National Marine Electronics Association
(NEMA) 0183 message sentence formats from a connected global positioning system (GPS) or integrated
navigation system.

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

3-3

3.4 3100-P Portable Topside Placement

Ideally, the portable topside will always be located in a dry, sheltered area that is protected from weather
and water spray. However, the rugged design of the unit allows it to be exposed to light precipitation
when the case is sealed.

CAUTION!

Never operate or open the unit where it can become wet from sea spray
or precipitation.

The unit should also be placed in an area where the temperature is consistently between 0°C and 40°C
(32°F and 104°F). Avoid areas of direct sunlight, especially in tropical environments, as heat buildup could
occur and viewing the laptop display and status indicators could be difficult. The location should also
enable direct communications with the deck crew that is handling the tow vehicle.

3.5 Topside Controls and Indicators

The 3100-P Portable topside controls and indicators are called out in FIGURE 3-1, and are as follows:

POWER SWITCH: Turns on the system.

READY INDICATOR: Green LED that lights up solid and remains on when the system is ready

to run.

PING INDICATOR: Yellow LED lights up during startup to show that the system is initializing,

then shuts off. Once the system has begun pinging, the LED blinks
continuously.

POWER INDICATOR: Red LED that indicates the system has power going to it.

3-4

POWER

READY

PING

TOW CABLE

DC INPUT /
AC

POWER
5A/250V

fuse

switch

indicator

indicator

connector

ETHERNET
connector

input

indicator

Figure 3-1: 3100-P Portable Topside Side Panel

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

3-5

3.6 Topside Connections

The connections for the 3100-P Portable Topside Processor are called out in FIGURE 3-1 explained below:

TOW CABLE: 6-prong female connector where the tow cable enters the portable

topside.

DC INPUT/ETHERNET: 8-prong male input where DC power cable can be connected. Also used

for creating a wired connection with the laptop computer.

AC INPUT: 3-prong male connector that attaches to the AC input wire.

5A / 250 V FUSE: Fuse access for the topside to be replaced in the event of a short.

3.7 Connecting the System Components

WARNING!

Do not connect the tow cable to the 3100-P Portable Topside before
connecting it to the tow vehicle, otherwise injury or death can occur if
the exposed connector on the tow cable is energized. Always connect
the tow cable to the tow vehicle first.

3.7.1 Connecting and Attaching the Tow Cable to the Tow Vehicle

A 35-Meter Kevlar Reinforced Tow Cable is shown connected and attached to a SB-216S Tow Vehicle in

F

IGURE 3-2, and is similar to that for the SB-424 Tow Vehicle. Shown in FIGURE 3-3 is the recommended

method for dressing and strain relieving the tow cable.

To connect and attach the tow cable to the tow vehicle:

1. Verify that the tow cable is not connected to the portable topside.

2. Coil the tow cable in a figure eight configuration.

3. Verify that the tow cable and tow vehicle connectors are free of corrosion or dirt. If dirty, clean

them with an alcohol wipe.

4. Apply a thin film of silicone grease to the pins of the tow vehicle tow cable connector.

5. Mate the connectors by pressing them firmly together. Do not wiggle the connectors.

6. Mate the connector locking sleeves.

7. Connect the eyelet of the cable grip to the shackle on the tow bridle and secure them with seizing

wire or a tie wrap.

3-6 SECTION 3: SETUP AND ACTIVATION

8. Secure the tow cable to the tow bridle using tie wraps. Electrical tape can also be used for this

purpose.

9. Secure the cable pigtail to tow bridle ensuring that there is proper strain relief and that the

connector does not strum or move in the water current.

Figure 3-2: Reinforced Cable Attached to SB-216S Tow Vehicle

Figure 3-3: Recommended Method for Dressing and Strain Relieving Tow Cable

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

3.7.2 3100-P Portable Topside Connection and Activation

The following procedure describes how to connect the 3100-P Portable Topside configured system.

3.7.2.1 Connecting

1. Check that the unit power is turned OFF (switch position = DOWN).

2. Connect the 3100-P Topside to a source of AC and/or DC power using either the DC Power &

Ethernet cable or the AC power cable. (Check system power specifications).

WARNING!

Do not extend the DC power leads of the DC Power and Ethernet Cable.

3. Connect the 3100-P Topside via the Tow cable connection to the Tow Vehicle using the supplied

tow cable.

3-7

4. Connect the Notebook Computer to the 3100-P Topside using either the Wireless connection, or

via the 100BaseT direct Ethernet cable (which is part of the DC Power & Ethernet cable assembly).

The Ethernet cable may be extended up to 100 feet using a Category 5 Ethernet patch cable and
Ethernet connector. A crossover or direct cable may be used. (See the following section for more
details).

3.7.2.2 Making an Ethernet Connection

The 3100-P Topside processor is assigned a static (fixed) IP Address of 192.9.0.31 at Port 1620.

EdgeTech assigns static (fixed) TCP/IP addresses for all Ethernet devices in a 3100-P Topside, and reserves
all TCP/IP addresses in ranges 192.9.0.0 to 192.9.0.63 and 192.9.0.101 to 192.9.0.255 for this purpose.

EdgeTech advises that any Notebook (or Desktop) Computer intended to connect to the 3100-P Topside
must therefore use a TCP/IP address 192.9.0.xxx where xxx is in the range 64 to 100. EdgeTech Factory
defaults for EdgeTech Notebook (or Desktop) computers are 192.9.0.100 for Wireless Networking and

192.9.0.99 for the Ethernet LAN.

NOTE: The Notebook (or Desktop) computer may have only one Ethernet

connection enabled or connected to the 3100-P Topside at any one time:
either the Ethernet LAN connection, or else the Wireless Networking
connection, but not both simultaneously.

3-8 SECTION 3: SETUP AND ACTIVATION

3100-TOPSIDE

Figure 3-4: 3100-P Network Configuration Diagram

ETHERNET LAN CONNECTION:

The Ethernet LAN connection is made using a physical wired connection via the DC Power & Ethernet
cable. This cable provides a standard RJ-45 Ethernet plug for direct connection to the RJ-45 LAN jack a
Notebook (or Desktop) computer. The 3100-P Topside auto-senses straight and crossover Ethernet cables.
The following steps should be taken on the Notebook (or Desktop) computer to use the Ethernet LAN
connection:

1. Disable Wireless Networking: Locate Wireless Networking on Windows Desktop or the System

Tray, then click it and Disable it, OR, if there is a switch, turn OFF the Wireless Networking
functionality on the Notebook Computer.

2. Insert the RJ-45 plug of the supplied DC Power & Ethernet cable into the RJ-45 LAN jack of the

Notebook (or Desktop) computer.

3. Enable the Ethernet LAN: Locate the Ethernet LAN on Windows Desktop or the System Tray, then

click and Enable it.

If the Ethernet LAN does not indicate "Connected" status in the Local Area Network Properties Box, check
all hardware connections, LAN IP address (see Section 7), and make sure that Wireless Networking is
Disabled, that the Ethernet LAN is Enabled, and that the 3100-P Topside is powered on.

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

3-9

NOTE: DISCOVER software will indicate that it is in restricted mode until

a valid connection is made between the Laptop and the 3100-P topside.

WIRELESS NETWORK CONNECTION:

The Wireless Networking connection is made using the wireless networking capability of the Notebook
Computer. The following steps should be taken on the Notebook Computer to use the Wireless
Networking connection:

1. Disable the Ethernet LAN: Locate the Ethernet LAN on Windows Desktop or the System Tray, then

click and Disable it, OR simply unplug the Ethernet cable from the Notebook Computer's RJ-45
jack.

2. Enable Wireless Networking: Locate Wireless Networking on Windows Desktop or the System

Tray, then click and Enable it, AND if there is a switch, turn ON the Wireless Networking
functionality on the Notebook Computer.

The IP Address for Wireless Networking is fixed at 192.9.0.100, and should not be changed. Ethernet LAN.
The IP Address for Ethernet LAN is fixed at 192.9.0.99, and should not be changed. The Ethernet LAN can
be configured for Auto or 100Mbit/s link speed for short (8m/25ft) cables. For longer cables EdgeTech
recommends a setting of 10Mbit/s, Half Duplex mode.

Figure 3-5: Wireless TCP/IP Address

3-10 SECTION 3: SETUP AND ACTIVATION

3.7.2.3 Activating The System

To activate the 3100-P Portable Sub-Bottom Profiling System after making all necessary connections:

1. Operate the ON/OFF switch to the ON position (switch position = UP).

Figure 3-6: Portable Processor Case Interface

NOTE: The ON/OFF switch operates in both the AC and DC power input

modes.

2. Observe the side panel LEDs. The desired LED status for normal operation should be:

Power RED = ON

System Ready GREEN = ON

Ping (transmit) YELLOW = OFF or FLASHING

3. The LEDs on the topside processor should display the following under normal circumstances:

RED LED = Power

The RED Power LED should always light up when power (AC or DC) is applied to the 3100-P Topside
and the side panel power switch is in the ON position.

If the RED Power LED does not light up when power is applied, check the position of the side panel
ON/OFF switch and all power connections to the unit. If the RED Power LED does not light up
when power is applied, but the YELLOW LED still lights up to indicate system initialization, the
most likely cause is that the RED Power LED or its own circuitry is faulty, in which case the rest of
the system might still be fully operational.

NOTE: Listen for cooling fan activity inside the unit to determine if the

unit is fully powered.

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

GREEN LED = System Ready

The GREEN System Ready LED lights up solidly, and remains on, when the system is ready to run.
On startup, the GREEN System Ready LED is off while the system performs power-on self-tests. If
any of these self-tests fail, the GREEN System Ready LED remains off. If all self-tests pass, the
GREEN System Ready LED lights up and remains on. Since these power-on self-tests also test the
Tow Vehicle interface, the Tow Vehicle must be attached to the 3100-P Portable Topside for these
power-on self-tests to pass.

If the GREEN System Ready LED never lights up, but stays OFF permanently, check the Tow Vehicle
cabling. If a problem is found and corrected, then cycle power to run the power-on self-tests
again.

YELLOW LED = Ping

The YELLOW Ping LED lights up during startup to indicate that the system is initializing. After the
system has initialized the yellow light turns off. The YELLOW Ping LED flashes while the 3100-P
Topside is pinging (sonar transmitting). The flashing rate of the YELLOW Ping LED does not always
match the actual ping rate (this is normal behavior).

3-11

If the YELLOW Ping LED never lights up during startup or pinging, but stays dark permanently, the
most likely cause is that the YELLOW Ping LED or its own circuitry is faulty, in which case the rest
of the system might still be fully operational.

3.8 Pre-Deployment Tests

Pre-deployment checks should be performed before the tow vehicle is deployed and after the system is
activated. Pre-Deployment checks involve:

1. Listening for the transmitted pulses from the transducers on the tow vehicle

2. Tapping the fiberglass shell with a hand or, gently, with a screwdriver handle near the hydrophone

arrays while observing the Waterfall Display in DISCOVER, ensuring it plays back and navigation is
present. DISCOVER is shown in F

NOTE: See EdgeTech DISCOVER Sub-Bottom software manual, 0019800,

for additional software information.

Based on default installation, DISCOVER and SONAR.EXE start automatically.

IGURE 3-7. An example Tap Test is shown in FIGURE 3-11.

3-12 SECTION 3: SETUP AND ACTIVATION

Figure 3-7: The DISCOVER Sub-Bottom Main Window

To perform the pre-deployment checks:

1. Follow the instructions in A

CTIVATING THE SYSTEM.

2. SONAR.EXE runs a self-test, with an audible chirp, indicating the test passed. A successful test is

shown in

FIGURE 3-8.

a. If the test fails, the SONAR.EXE window will remain on the desktop, and the failure mode

will be described in the window.

Figure 3-8: Successful Self-Test

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

3. The NET status in DISCOVER should change from NET OFF to NET ON, as shown in FIGURE 3-9.

Figure 3-9: NET: ON

3-13

4. Next, you should run a Tap Test. To do this, navigation to the Sub-Bottom Control Tab, shown in

FIGURE 3-10.

Figure 3-10: The Sub-Bottom Control Tab

5. In the Shortcut Toolbar, set Gain to either 0 or -3 dB, and then click Normalize Gain Button.

CAUTION!

Do not allow the transducers on the tow vehicle to continuously transmit
in air for an extended period, as damage to the transducers could occur.

6. In the Sub-Bottom Control Tab, select a Transmit Pulse using the “Pulse” drop down. Set “Transmit

Level (%)” to “0”. Select the “Transmit On” checkbox.

7. The transducers on the tow vehicle should begin transmitting (at zero power) and receive data

should begin scrolling on the display in the DISCOVER Main window from right to left.

8. Tap the underside of the tow vehicle near the hydrophones with the handle of a screw driver,

while observing the Waterfall Display in the DISCOVER window. Streaks or noise spikes should be
visible in the Waterfall Display, as shown in F

IGURE 3-11. This verifies the receive channel is

operating.

3-14 SECTION 3: SETUP AND ACTIVATION

Figure 3-11: Tap Test

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

3-15

3.9 Tow Vehicle Deployment

The SB-424 and SB-216S Tow Vehicles can be towed using the 35-Meter Kevlar Reinforced Tow Cable. A
steel cable can also be to increase the life of the tow cable. For towing in deep water, a single, armored
tow cable is required. The steel cable can be secured to the tow cable using electrical tape, making sure
there is enough built-in slack in the tow cable so that the entire load is supported by the steel cable.

CAUTION!

Do not tow the tow vehicle too close to the survey vessel. Towing in this
manner can cause the tow vehicle to be pulled in against the hull of the
ship due to the low pressure of the propeller wash and the effect of the
water flowing by the hull. In addition, sonar reflections from the hull
may be evident in the records.

The tow vehicle may be towed at speeds of up to 10 knots. However, to optimize performance and
minimize flow noise, it is recommended that the tow vehicle be towed at speeds of less than 5 knots. Lead
ballast in the nose of the tow vehicle provides towing stability by allowing the tow point to be placed as
far forward as possible and by making the tow point well above the center of gravity of the tow vehicle.
The tow point is factory adjusted so that the tow vehicle is level when it is towed in the water at 3 to 5
knots.

CAUTION!

Do not tow the tow vehicle with the nose angled up or down. Doing so
can degrade the sonar imagery. Before towing the tow vehicle, verify
that it is as level as possible when towing the tow vehicle at 3 to 5
knots.

3.9.1 Obtaining the Best Sonar Imagery When Towing

To generate good sonar imagery, the pitch of the vehicle, which is how much in degrees the nose is angled
up or down, must be less than one half of the -6 dB beam width of the acoustic pulse at its highest
frequency—and less at lower frequencies. As a rule of thumb, for a 0.5-meter long hydrophone array, the

-6 dB beam width at 10 kHz is 20 degrees. For

example, if you are transmitting a 2 to 15 kHz FM pulse using a tow vehicle with a 0.5-meter long receiving
array, such as in the SB-216S or SB-216D Tow Vehicle, you must keep the tow vehicle from pitching more
than about 7 degrees in either direction, or

3-16 SECTION 3: SETUP AND ACTIVATION

1

 20   10 

2

15 

Equation 1

The same criteria apply to vehicle roll, which is how much in degrees it is listing to port or starboard.
Sensors can be installed on the tow vehicle to measure its pitch and roll under various towing
conditions.

= 6.6 

3.9.2 Conducting Sediment Classification Surveys When Towing

To conduct sediment classification surveys, the reflection coefficient should be measured with better than
10% accuracy. The normal component of the sea floor reflection must arrive within the angle
corresponding to one half of the -1 dB beam width of the acoustic axis of the vehicle at the center
frequency of the pulse, the frequency where most of the acoustic energy is concentrated and where the
reflection coefficient is measured. As a rule of thumb, for a 0.5-meter long hydrophone array, the -1 dB
beam width at 10 kHz is 4 degrees.

For example, if the sea floor is expected to have slopes of up to 5 degrees during the survey, and a vehicle
with a 0.5-meter hydrophone array and a 2 to 10 kHz FM pulse is selected, the -1 dB beam width should
be at least 10 degrees at 6 kHz. For this pulse and receiving array, the -1 dB beam width at 6 kHz is about
7 degrees, or

4   10 

6 

Equation 2

Therefore, only reflection coefficient measurements made when the sea floor slope is within 3.5 degrees
of horizontal will be accurate within 10% (1 dB).

The attitude of the tow vehicle with respect to the horizontal plane must meet the -1 dB criteria described
above for sediment classification surveys. Rough sea conditions tend to move the vehicle up and down
vertically, causing oscillations in the images. DISCOVER 3100-P SB has a swell filter that will help reduce
the heave effect on the record. Refer to the “DISCOVER 3100-P SB Sub-Bottom Software User’s Manual”
for details. For sediment classification, the tow fish pulses must be calibrated by the end user. This
calibration procedure is described in the software manual.

= 6.6 

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

4-1

SECTION 4: MAINTENANCE

The 3100-P Sub-Bottom Profiling System is ruggedly designed and built, therefore requiring little
maintenance. To ensure long lasting and reliable service, however, some periodic maintenance is
recommended. This section provides some maintenance recommendations and includes instructions on
how to disassemble and reassemble a tow vehicle should it be required to replace internal components.

4.1 Portable Topside

The 3100-P Portable Topside requires no maintenance.

4.2 Cleaning the Tow Vehicle and Tow Cable after Use

After retrieving the tow vehicle from the water, use a hose to wash it down, along with the tow cable,
with clean, fresh water. Thoroughly spray the transducers and the hydrophone arrays from underneath
the tow vehicle and remove any buildup of debris that may have been trapped inside. Inspect the inside
of the tow vehicle, especially the transducers, the hydrophone arrays and the cables for any damage and
for any loose connectors. Also inspect the tow cable and the connectors on each end.

After washing down the tow vehicle, clean the transducers and hydrophone arrays using a mild, non­abrasive detergent and water. Do not use any abrasive detergents or ammonia based cleaners. After
cleaning, thoroughly spray the transducers and hydrophones again with fresh water.

4.3 Inspecting and Cleaning the Underwater Connectors

Regularly inspect the contacts on the male pins of each underwater connector in the tow vehicle and on
the tow cable for corrosion or oxidation. To remove any oxidation, rub the contacts lightly with 800 grit
emery cloth cut into strips equal to or less than the width of a contact. A pencil eraser can also be used
for this purpose. The female sockets can be cleaned using a cotton swab and rubbing alcohol. A .22 caliber
bore brush with only nylon bristles can be used to remove light oxidation.

To extend the life and increase the reliability of the connectors, apply a thin film of silicone dielectric
grease, such as Novagard G624 general purpose silicone grease or an equivalent, to the entire surface of
each male pin. A small amount of grease should also be applied to the opening of each female socket.

NOTE: Remember to always install dummy connectors on the connectors

of the tow cable and the tow vehicle tow cable connector.

SECTION 4: MAINTENANCE 4-2

4.4 Storage

When not in use, all the components of the 3100-P Sub-Bottom Profiling System should be packed in their
original shipping containers, in the same manner in which they were originally shipped, and stored in a
dry area.

4.5 Restoring the Operating System

An image file of the 80-GB hard drive is provided on a flash drive. This flash drive can be used to completely
restore the hard drive to its original shipped factory configuration in the unlikely event of its failure. For
instructions on how to restore the operating system hard drive, refer to APPENDIX

A: SYSTEM RESTORE.

4.6 Disassembling and Reassembling a Tow Vehicle

The procedures below describe how to disassemble and reassemble a tow vehicle to access the
transducers, hydrophones, transformers, inductors, spider boxes, spider arrays, and preamplifiers. The
tools required are a socket wrench, 7/16 and 1/2-inch sockets, and a small flat screw driver.

CAUTION!

Disassembling a tow vehicle may void its warranty. If in doubt, contact

EDGETECH CUSTOMER SERVICE for more information.

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

Transformer
(Part of KT

Transducer
(p/n KT

-424)

Inductor

Hydrophones

Main spider
array

Preamplifer

Spider box

Hydrophone
spider array

Hydrophone
Preamplifier

Spider array

Spider box

Transformer
(Part of KT

Transducer
(p/n KT

4-3

-424)

-216A2)

-216A2)

Figure 4-1: SB-424 and SB-216S Tow Vehicle Internals

SECTION 4: MAINTENANCE 4-4

Retaining Ring

Locking Sleeve

4.6.1 Disassembling a Tow Vehicle

NOTE: Some of the images shown below are of a 216SB vehicle being

disassembled, whilst not the exactly like the 424 vehicle the overall
disassembly procedure is similar.

To disassemble a sub-bottom tow vehicle:

1. Using the blade of the screw driver, pry out the retaining ring from the locking sleeve as shown in

F

IGURE 4-2.

Figure 4-2: Retaining Ring and Locking Sleeve Removed

2. Remove the retaining ring and the locking sleeve from the connector as shown in F

IGURE 4-3.

Figure 4-3: Male Connector

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

4-5

3. Using the socket wrench with the 7/16-inch socket, remove all the bolts securing the teardrop

cover to the body of the tow vehicle as shown in F

IGURE 4-4.

Figure 4-4: Removing the 7/16-Inch Bolts Securing the Teardrop Cover to the Tow Vehicle

4. Remove the teardrop cover as shown in F

IGURE 4-5.

Figure 4-5: Removing the Teardrop Cover

SECTION 4: MAINTENANCE 4-6

5. Push the main spider assembly pigtail through the hole in the teardrop cover in F

Figure 4-6: Teardrop Cover Removed

6. Using the socket wrench with the 7/16th-inch socket, remove all of the bolts and nuts securing

the front half of the top cover of the tow vehicle body as shown in F
rear half using a 1/2 –inch socket.

IGURE 4-7. Continue with the

IGURE 4-6.

Figure 4-7: Removing 7/16 and ½ Inch Bolts and Nuts

7. Lift the top cover off, turn it over, and disconnect the spider cable from the hydrophones and the

preamp components.

4.6.2 Reassembling a Tow Vehicle

To reassemble the tow vehicle, reverse the disassembly procedure described above.

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

5-1

SECTION 5: TROUBLESHOOTING

Should some operational or performance problems occur with the 3100-P Sub-Bottom Profiling System,
it may be possible to correct them using the troubleshooting guide provided below.

This troubleshooting guide identifies some symptoms that could occur and presents one or more possible
causes and the recommended corrective action for each. When using the troubleshooting guide, perform
the corrective action for any given symptom in the order of possible causes, which generally corresponds
to the degree of troubleshooting difficulty, from the simple to the more complex.

Before proceeding with any corrective action, verify the following:

• The topside is plugged into an appropriate power source.

• The 3100-P Portable Topside is switched on.

NOTE: Be sure to also verify that all the cables in the topside and the tow

vehicle are properly mated and are not loose or damaged. Most causes
of operational or performance problems are a result of poor connection.

SECTION 5: TROUBLESHOOTING 5-2

SYMPTOM

PROBABLE CAUSE

CORRECTIVE ACTION

RED POWER LED indicator on the

LED is defective

Replace the bulb. The Power Amplifier will operate with the bulb
burnt out.

AC fuse is blown.

Check the 5A/250V fuse in the topside connector box. If
blown, replace the fuse.

DC fuse is blown

Check the 20A fuse inside the 3100P topside. To access remove
Top cover.

The green Ready LED indicator on

AC power is not connected.

Check the AC power cables and verify that the Deck Unit is
connected to AC power.

The indicator is not operating.

Open the 3100P Topside Processor and check the indicator and
replace LED.

When performing the pre-

The tow cable is
disconnected.

Check the tow cable and verify that it is properly connected on
both ends.

The tow cable is damaged.

Check the tow cable connectors for excessive corrosion or a
broken pin.

If corrosion or a broken pin is not found, check the continuity of
the

The topside spider has failed, replace spider assembly

The transducer has failed, replace transducer .

The Power Amplifier has
failed.

Replace the Power Amplifier.

The Tiger board has failed.

1. Check the sonar.exe program to see what it is reporting for
a fault if any.

2. Check connectors to board

3. If these solutions fail, Contac

ech about replacing the

Tiger Board

When performing the pre-

Tow vehicle cable harness
connections are loose.

Verify that all the cable harness connectors in the tow vehicle
are

12 VDC power for the
preamplifier

Check the sonar.exe program for 12 VDC

If 12 VDC is not present

5.1 3100-P Portable Topside Troubleshooting

A table of troubleshooting procedures for the 3100P Topside is provided below:

topside does not turn on when
the switch is turned on.

the 3100P Topside Processor does
not illuminate

deployment tests,
transmissions from the
transducers are not heard.

If blown, replace the fuse. Use a 20A supplied.

conductors in the tow cable.

deployment tests, signals in the
Sonar display are not present

3100-P PORTABLE SUB-BOTTOM 0004802_REV_F

is not present.

properly mated.

t EdgeT

replace the Tiger board.

5-3

SYMPTOM

PROBABLE CAUSE

CORRECTIVE ACTION

5 VDC from the preamplifier in
the

Measure voltage between TOWFISH PREAMP 5 VDC test point
and PREAMP COMMON

Voltage should be

tow cable

and spider mold in tow vehicle, repair or replace as needed

If 5 VDC still not present,

Vertical black streaks are

One or more of the underwater
connectors are loose or have
corroded contacts.

Inspect and clean the connectors. Reconnect the connectors.

Extended use has caused a
conductor in the tow cable or
the
vehicle to

Check the continuity of the conductors in the tow cable and in
the cable harness.

There is white data dropout in the

A connector is loose or
flooded.

Wiggle the tow cable connections and the connectors of the
cable
display for
“Inspecting and
page 4
connectors, and if
or locking sleeves. Possible spider

There are periodic streaks in the

The system is not properly
grounded.

Check the continuity between the GND connection on the back
of

The return signals from the
hydrophone arrays are being
clipped.

Reduce the preamplifier gain or the transmit power, or both.

Noise is present in the Sonar

Engine noise is coupling into the
sonar frequency band.

Isolate the engine noise.

Tow vehicle is in or near the
ship’s wake.

Tow the tow vehicle at a deeper depth and farther away from
ship.

The tow vehicle is not level
when

Level the tow vehicle by adjusting the tow point such that the
tow vehicle is level when moving
knots.

The tow vehicle is being towed
too

Lower the speed of the tow vehicle.

present in the Sonar display.

Sonar display.

Sonar display from AC noise.

tow vehicle is not present.

cable harness in the tow

break.

test point on back of Deck Unit.

5 VDC.If 5 VDC is not present, check

.

replace tow vehicle’s preamplifier.

harness in the tow vehicle while watching the Sonar

white streaks. If white streaks are present, refer to

Cleaning the Underwater Connectors” on

-2 and inspect and clean the connectors. Reconnect the
necessary, secure them using electrical tape

assembly problem.

the Deck Unit to ship’s ground.

display.

Table 5-1: 3100-P Portable Topside Troubleshooting

5.2 Wiring and Connector Pin out Drawings

Included in the following pages are the 3100-P Sub-Bottom Profiling System diagrams for the 35-meter
cable, portable topside, and towfish.

being towed.

fast.

through the water at 3 to 5

SECTION 5: TROUBLESHOOTING 5-4

Figure 5-1: 35M Tow Cable Diagram – 0002899

5-5

Figure 5-2: 3100-P Topside Interconnect – 0004674

SECTION 5: TROUBLESHOOTING 5-6

Figure 5-3: Wiring Diagram, Spider Box, SB-424 Tow Vehicle

5-7

Figure 5-4: Wiring Diagram, SB-424 Tow Vehicle

SECTION 5: TROUBLESHOOTING 5-8

Figure 5-5: Wiring Diagram, Spider Box, SB-216S Tow Vehicle

5-9

Figure 5-6: Wiring Diagram, SB-216S Tow Vehicle

APPENDIX A: SYSTEM RESTORE A-10

APPENDIX A: SYSTEM RESTORE

The following section outlines the procedures for backing up and restoring the system drive.

CAUTION!

All data will be lost upon restoring the system to factory settings. Be
sure to backup all data before preforming the procedure below.

1. Ensure that topside is off.

2. Insert USB3 flash drive in blue USB3 port.

3. Start topside and be prepared to press F⋆⋆ key when prompted:
a. If the topside is rack mount, press F11.

b. If the topside is a laptop, press F12.

4. Under Please select boot device: By using up/down arrow keys, select EUFI:

Corsair Voyager 3.0 000A, then press Enter.

5. Wait for Paragon Backup & Recovery 14 Home screen to appear, then click

Restore icon.

6. On Welcome to the Restore Wizard screen click Next.

7. On Browse for Archive screen, drag down menu and click on ⊞ to the left of

(E:). Click on folder named as a variation of V
V⋆.⋆.⋆_⋆⋆⋆⋆P for laptops. When Archive File Details window appears, click
Next.

8. At What to restore window, click Basic MBR Hard Disk 0, click Next.

9. At Where to restore window, ensure that Basic MBR Hard Disk 0 is already

selected (brown box around it). If it is not, use up/down arrow keys to select.
Click Next.

10. At Restore results window, make no selection and click Next.

11. At the Ready to restore from the archive window, select ʘ Yes, apply the

changes physically. Click Next. Restoring will begin.

⋆.⋆.⋆_⋆⋆⋆⋆R for rack mounts, or

12. At Completing the restore wizard, click Finish. Click Shutdown.

13. Remove USB3 flash drive and restart topside.