Reson SeaBat 7125 ROV User manual

SeaBat 7125 ROV
High-Resolution Multibeam
Sonar System
OPERATOR’S MANUAL
Part Number 86000162
Version 3
May 2011

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SeaBat 7125 ROV Operator‟s Manual
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Version 3
Notice
The information contained in this document is subject to change
without notice. RESON makes no warranty of any kind with regard to
this material, including (but not limited to) the implied warranties of
merchant liability and fitness for a particular purpose. RESON shall
not be liable for errors contained herein or for incidental or
consequential damages in connection with the furnishing,
performance, or use of this material.
Copyright
Statement
Copyright RESON A/S 2010. All rights reserved. Reproduction,
adaptation, or translation without prior written permission is
prohibited, as per the copyright laws of Denmark.
SeaBat 7125 ROV Operator’s Manual written by:
RESON A/S
Fabriksvangen 35
3550 Slangerup
Telephone: [phone]
Facsimile: [phone]
Web: http://www.reson.com
E-mail: [email protected]m
[email protected]
Copyright
Release
No part of this manual may be copied or distributed, transmitted,
transcribed, stored in a retrieval system, or translated into any
human or machine readable language, in any form or by any means
for disclosure to third parties without the express written consent of
RESON A/S.
Version
May 2011
Version 3
RESON strives to maintain up-to-date information and may, as
necessary, review and revise this manual. If the information
contained in this manual is unclear, please contact your nearest
RESON office for clarification.
Maintenance
Release
Release FP1
This manual is consistent with the indicated software and firmware
maintenance release.
Electronic File
Version
This manual is available from RESON in the Adobe® Acrobat®
Portable Document Format (PDF). The selected PDF process
preserves the interactive index and cross-reference features of the
original Microsoft Word document.

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TABLE OF CONTENTS
1Introduction................................................................................1
1.1 System Overview.............................................................................................1
1.2 System Architecture.........................................................................................1
1.3 System Operation............................................................................................2
1.4 System Features..............................................................................................3
1.5 Typical Applications.........................................................................................4
2Safety Precautions.....................................................................5
2.1 Operator Safety ...............................................................................................5
2.2 Equipment Safety ............................................................................................5
2.2.1 Safe Handling ..........................................................................................5
2.2.2 Cleaning and Maintenance.......................................................................6
2.3 Electrical Isolation............................................................................................8
2.4 Exposure to Sunlight........................................................................................8
2.5 Safe Disposal of Waste (WEEE Directive).......................................................8
2.6 CE Marking......................................................................................................9
3System Startup and Shutdown...............................................10
3.1 Chapter Overview..........................................................................................10
3.2 System Startup Instructions...........................................................................10
3.3 Starting the 7k Control Center and Sonar ......................................................11
3.4 System Shutdown Instructions.......................................................................13
3.5 Installing a License........................................................................................14
4System Configuration..............................................................15
4.1 Chapter Overview..........................................................................................15
4.2 Configuration Menu Options..........................................................................16
4.2.1 Data Display & Format...........................................................................16
4.2.2 UDP Broadcasting..................................................................................17
4.2.3 Hardware Configuration .........................................................................22
4.2.4 Advanced Ping Settings.........................................................................24
4.2.5 Triggering...............................................................................................25
4.2.6 Motion....................................................................................................26
4.2.7 Load.......................................................................................................28
4.2.8 Save Current..........................................................................................28

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4.2.9 Edit Auto Pilot Settings...........................................................................29
4.3 Channel Normalization...................................................................................31
4.4 I/O Module Configuration...............................................................................32
4.4.1 Device Types.........................................................................................33
4.4.2 Adding a Device.....................................................................................33
4.4.3 I/O Module Setup Check........................................................................34
4.5 Remote Operation .........................................................................................38
4.6 Folder Management.......................................................................................38
4.6.1 Sharing a Folder on a Network...............................................................38
4.6.2 Verifying or Changing the Computer Name and/or Workgroup Name ....43
5System Operation....................................................................48
5.1 Chapter Overview..........................................................................................48
5.2 User Interface................................................................................................49
5.3 Primary Display Tab ......................................................................................50
5.3.1 Sonar Image ..........................................................................................52
5.3.2 A-Scan Display ......................................................................................53
5.3.3 Event Messages ....................................................................................56
5.3.4 1PPS Input Indicator..............................................................................57
5.3.5 Normalization Indicator ..........................................................................57
5.3.6 Freeze the Sonar Image.........................................................................58
5.3.7 Maximize the Sonar Image.....................................................................58
5.3.8 Change Modes.......................................................................................58
5.3.9 Identify Beam Track, Depth, and Range (or Channel and Sample) ........58
5.3.10 Automatic Update of Auto Pilot Settings.................................................59
5.4 Motion Tab.....................................................................................................59
5.5 Snippets and Side Scan Tabs........................................................................61
5.6 Built-In Test Environment (BITE) ...................................................................62
5.6.1 BITE.......................................................................................................62
5.6.2 BITE Tabs..............................................................................................63
5.7 Sonar Control Tabs........................................................................................67
5.7.1 Main Sonar Settings...............................................................................67
5.7.2 Detection Settings..................................................................................69
5.7.3 Ocean Settings ......................................................................................71
5.7.4 Primary Display Settings........................................................................72
5.7.5 Data Recording......................................................................................74

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5.7.6 Screen Recording (Video Recording).....................................................76
5.7.7 I/O Module Setup...................................................................................77
5.7.8 Data Playback........................................................................................77
5.8 7k Center Console Window ...........................................................................82
5.9 Software Release Information........................................................................83
6Active Sonar Usage.................................................................84
6.1 Chapter Overview..........................................................................................84
6.2 Enhancing the Sonar Image ..........................................................................85
6.2.1 Pulse Length and Image Resolution.......................................................85
6.2.2 Transmit Power OFF..............................................................................85
6.2.3 Lower Ping Rate ....................................................................................85
6.2.4 Receiver Gain........................................................................................86
6.2.5 Variable Swath.......................................................................................86
6.2.6 Correct Range Setting............................................................................88
6.2.7 Use of Gates..........................................................................................89
6.3 System Efficiency ..........................................................................................91
6.3.1 Auto Pilot ...............................................................................................91
6.3.2 Roll Stabilization ....................................................................................92
6.4 Use of Displays..............................................................................................94
6.4.1 Equidistant versus Equiangular Beam Mode..........................................94
6.4.2 Wedge versus B-Scan Display...............................................................94
6.4.3 A-Scan, Phase and Magnitude Displays ................................................94
6.5 Compensation for Environmental Conditions.................................................94
6.5.1 Loss of Sound by Absorption .................................................................95
6.5.2 Loss of Sound by Spreading..................................................................96
6.5.3 Sound Velocity.......................................................................................97
6.6 Limitations .....................................................................................................98
6.6.1 Cavitation...............................................................................................98
6.6.2 Machinery Noise ....................................................................................98
6.6.3 Speed ....................................................................................................99
6.6.4 Air Bubbles.............................................................................................99
6.6.5 Environment.........................................................................................100
7System Performance and Data Types..................................101
7.1 Data Types..................................................................................................102
7.1.1 Bathymetry Data ..................................................................................102

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7.1.2 Side-Scan Data....................................................................................103
7.1.3 Snippets Data ......................................................................................104
7.2 Equidistant Beamforming.............................................................................105
7.3 Quality.........................................................................................................106
7.3.1 Brightness Test....................................................................................106
7.3.2 Colinearity Test....................................................................................107
7.3.3 Quality Filter.........................................................................................108
7.4 Uncertainty Estimation.................................................................................108
7.5 Ping Rate Table...........................................................................................109
Appendix A Troubleshooting ..................................................110
A.1 System Warnings and Alarm Messages ......................................................110
A.2 Responding to Errors and Alarms................................................................110
A.3 Alarm Messages..........................................................................................111
A.3.1 General System Startup Alarms...........................................................111
A.3.2 PCI Card Related (ADMXRC) Alarms ..................................................113
A.3.3 Data Reading Alarms...........................................................................114
A.3.4 System Resource Alarms.....................................................................114
A.3.5 Input Signal (Timing and Triggers) Alarms ...........................................114
A.3.6 Calibration Alarms................................................................................115
A.4 Warning Messages......................................................................................115
A.4.1 Configuration Warnings........................................................................116
A.4.2 Startup Warnings .................................................................................116
A.4.3 Data Processing Warnings...................................................................116
A.4.4 Data Recording Warnings....................................................................117
A.4.5 BITE Data Warnings ............................................................................117
A.4.6 Input Signal Warnings..........................................................................117
A.4.7 System Stability Warnings....................................................................118
A.4.8 Data Subscription Warnings.................................................................118
A.4.9 Network Components Warnings...........................................................118
A.4.10 External Trigger Warnings....................................................................119
A.5 Alarm Messages –Master List in Alphabetical Order...................................120
A.6 Warning Messages –Master List in Alphabetical Order...............................126
Appendix B Installation Instructions ......................................132
B.1 Components Checklist.................................................................................132
B.2 Installation Checklist....................................................................................133

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B.3 Dry-End Installation .....................................................................................134
B.3.1 7125 Processor Installation..................................................................134
B.3.2 7125 Processor Mounting ....................................................................136
B.3.3 7125 Processor Cable Connections.....................................................136
B.3.4 Monitor Connections............................................................................139
B.3.5 Simple Monitor Setup...........................................................................140
B.3.6 Advanced Monitor Setup (Cloning Monitors)........................................141
B.4 Auxiliary Sensors.........................................................................................146
B.4.1 Sound Velocity Input............................................................................146
B.4.2 Motion Sensor Input.............................................................................147
B.4.3 Time Input............................................................................................147
B.4.4 Standard Serial Ports...........................................................................148
B.4.5 RJ-45 to D-SUB9 Adaptor....................................................................148
B.5 SeaBat 7125 ROV Cables...........................................................................149
B.6 Wet-End Installation.....................................................................................151
B.6.1 Link Control Unit Installation.................................................................151
B.6.2 EM 7216 Receiver Unit ........................................................................153
B.6.3 TC 2160 Projector Unit.........................................................................154
B.6.4 TC 2163 Projector Unit (Optional)........................................................155
B.6.5 Wet-End Mounting ...............................................................................156
B.6.6 Sonar Head Assembly Orientation.......................................................156
B.6.7 Sonar Reference Point.........................................................................158
B.6.8 Wet-End Cable Connections................................................................159
B.7 System Check .............................................................................................160
Appendix C Reference Documentation ..................................161
C.1 SeaBat 7125 ROV Documentation ..............................................................161
C.2 SeaBat 7125 ROV Design Documents ........................................................162
Appendix D SeaBat 7125 System Options .............................171
D.1 Extended Warranty Contract........................................................................171
D.2 External RAID Drive.....................................................................................171
D.3 Fiber-Optic Converter (for ROV Installations)...............................................172
D.4 7125 Mounting Bracket –PN 85160019 ......................................................173
D.5 PDS2000 Data Acquisition Software............................................................174
D.6 SeaBat Cables.............................................................................................174
D.7 Sound Velocity Probe..................................................................................174

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D.8 System Integration and Training..................................................................175
D.9 Yearly Inspection and Servicing...................................................................175
D.10 Yearly Upgrades for SeaBat Firmware.........................................................176
Appendix E Available SeaBat 7125 Configurations...............177
E.1 Configurations .............................................................................................177
E.1.1 7125 SV Configuration.........................................................................177
E.1.2 7125 ROV Configuration......................................................................177
E.1.3 7125 AUV Configuration.......................................................................177
E.2 Feature Packages........................................................................................178
Appendix F Warranty Information ..........................................179
F.1 One Year Limited Warranty .........................................................................179
F.2 Exclusions ...................................................................................................179
F.3 Warranty Limitations....................................................................................179
F.4 Servicing During Warranty Period................................................................180
F.5 Equipment Return Procedure.......................................................................180
F.6 Service ........................................................................................................180
Appendix G Glossary of Terms...............................................181
LIST OF FIGURES
Figure 1: SeaBat 7125 ROV Sonar System.....................................................................1
Figure 2: SeaBat 7125 ROV System Configuration.........................................................2
Figure 3: 7125 Processor Filter Location.........................................................................7
Figure 4: Example of Trigger Output: Delay = 0, Pulse Width = 1..................................25
Figure 5: Sample of I/O Module Setup Tab ...................................................................32
Figure 6: 7k External I/O Window..................................................................................35
Figure 7: User Interface with Display and Control Areas ...............................................49
Figure 8: Primary Display Tab.......................................................................................50
Figure 9: A-Scan and Sonar Wedge Display.................................................................52
Figure 10: B-Scan Display.............................................................................................53
Figure 11: Motion Tab...................................................................................................60
Figure 12: Typical Side-Scan Display............................................................................61
Figure 13: BITE Tab......................................................................................................62

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Figure 14: BITE Status Tab...........................................................................................63
Figure 15: BITE –Link Module Tab...............................................................................64
Figure 16: BITE –Link Control Tab...............................................................................64
Figure 17: BITE –Receiver Tab....................................................................................65
Figure 18: BITE –Projector Tab....................................................................................65
Figure 19: BITE –7kCenter Tab....................................................................................66
Figure 20: Sample of Main Sonar Settings Tab.............................................................67
Figure 21: Range Setting Diagrams ..............................................................................67
Figure 22: Sample of Detection Settings Tab................................................................69
Figure 23: Sample of Ocean Menu Tab.........................................................................71
Figure 24: Sample of Primary Display Settings Tab ......................................................72
Figure 25: Sample of Data Recording Tab ....................................................................74
Figure 26 Sample of Screen Recording Tab..................................................................76
Figure 27: Sample of Data Playback Tab......................................................................77
Figure 28: 7k Center Console Window..........................................................................82
Figure 29: Software Release Information (Example Only).............................................83
Figure 30: Example of Reduced Swath Width...............................................................87
Figure 31: Range Setting –Too Long............................................................................88
Figure 32: Range Setting –Too Short...........................................................................88
Figure 33: Range Setting –The Exception....................................................................89
Figure 34: Depth Gates, With No Roll ...........................................................................89
Figure 35: Depth Gates, With Roll.................................................................................90
Figure 36: Depth Gates, With Roll and Motion Sensor Input..........................................90
Figure 37: Swath under Zero Roll Conditions................................................................92
Figure 38: Laterally Displaced Swaths under Roll Conditions........................................93
Figure 39: Swath under Roll Stabilization......................................................................93
Figure 40: Acoustic Absorption Reference ....................................................................96
Figure 41: Typical Sound Velocity Values .....................................................................97
Figure 42: Graphic Illustration of Snippets Data ..........................................................104
Figure 43: Beam Density.............................................................................................105
Figure 44: Beam Spacing............................................................................................105
Figure 45: Across-Track Sounding Location on a Flat Bottom.....................................106
Figure 46: Brightness Test..........................................................................................107
Figure 47: Colinearity Flags.........................................................................................107
Figure 48: 7125 Processor Unit...................................................................................134

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Figure 49: 7125 Processor Mounting...........................................................................136
Figure 50: 7125 Processor Rear View.........................................................................136
Figure 51: 7125 Processor Cable Connections ...........................................................137
Figure 52: Processor Diagnostic LEDs........................................................................138
Figure 53: SVP, Motion, and Time Standard Connections...........................................146
Figure 54: RJ-45 to D-SUB9 Adaptor..........................................................................148
Figure 55: SeaBat 7125 ROV System Cables.............................................................149
Figure 56: Bend Radius...............................................................................................150
Figure 57: Link Control Unit.........................................................................................151
Figure 58: EM 7216 Receiver Unit...............................................................................153
Figure 59: TC 2160 Projector Unit...............................................................................154
Figure 60: TC 2163 Projector Unit...............................................................................155
Figure 61: Sonar Head Assembly Orientation .............................................................157
Figure 62: Sonar Reference Point...............................................................................158
Figure 63: LCU Cable Connections.............................................................................159
Figure 64: System Documentation Link (Example Only)..............................................161
Figure 65: Receiver, EM 7216 Outline Dimension.......................................................163
Figure 66: Projector, TC 2163 Outline Dimension .......................................................164
Figure 67: Projector, TC 2160 Outline Dimension .......................................................165
Figure 68: Cable Assembly, LCU to Processor............................................................166
Figure 69: Cable Assembly, Receiver to LCU .............................................................167
Figure 70: Cable Assembly, Projector to LCU .............................................................168
Figure 71: Cable Assembly, 7125 Processor to SVP 70 (optional)..............................169
Figure 72: Cable Assembly, 7125 Processor to SVP 71 (optional)..............................170
Figure 73: RAID Hard Disk Array.................................................................................171
Figure 74: Typical ROV Installation.............................................................................172
Figure 75: TC3300 Media Converter (Single-Mode Fiber Version)..............................173
Figure 76: 7125 Mounting Bracket –PN 85160019.....................................................174
LIST OF TABLES
Table 1: TVG Formula...................................................................................................86
Table 2: Incorrect Range Settings –Examples and Solutions .......................................88
Table 3: SeaBat 7125 ROV System Performance.......................................................102

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Table 4: Ping Rate Table.............................................................................................109
Table 5: SeaBat 7125 ROV Components....................................................................132
Table 6: 7125 Processor Technical Specifications ......................................................134
Table 7: DVI and Analog Monitor Connections............................................................139
Table 8: Display Port Connections..............................................................................139
Table 9: Processor Port “SVP/Com3”..........................................................................146
Table 10: Processor Port “Motion/Com4” ....................................................................147
Table 11: Processor Port “Time/Com10” .....................................................................147
Table 12: Processor Ports “Com5”, “Com6”, “Com7”, “Com8”, “Com9” .......................148
Table 13: RJ-45 to DB9 Adaptor .................................................................................148
Table 14: LCU Technical Specifications......................................................................151
Table 15: EM 7216 Receiver Unit Technical Specifications.........................................153
Table 16: TC 2160 Projector Unit Technical Specifications.........................................154
Table 17: TC 2163 Projector Unit Technical Specifications.........................................155
Table 18: RAID Hard Disk Array Technical Specifications...........................................171
Table 19: TC3300 Fiber-Optic Converter Technical Specifications..............................173
Table 20: SVP Technical Specifications......................................................................175
Table 21: Available Configurations..............................................................................177
Table 22: SeaBat 7125 Feature Packages..................................................................178

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PREFACE
How to Use This Manual
This manual is designed to accommodate both the first time user, who needs detailed
instructions, and the experienced technician, who only requires a reference tool. It
provides detailed procedures for the correct installation, operation, and maintenance of
the SeaBat system.
Read this manual thoroughly and follow the steps provided to maintain optimal safety
standards and to obtain the best system performance.
Standards of Measurement
All physical measurements represented in this document are based on the metric
system. All temperatures are represented in degrees Celsius.
Document Conventions
The following information will make it easier for the reader to interpret the text presented
in this document.
Document Conventions
Convention
Definition
Hyperlink
Indicates a hyperlinked cross-reference. Click the word to be taken
to the specified reference point.
Numbered list
Indicates stepwise instructions to be followed in a particular order.
Bulleted list
Indicates items of a list without any particular order.
Notes, Cautions, and Warnings
Notes, Cautions, and Warnings are included in this text to provide valuable information
and to help the operator prevent damage to the sonar or to personnel.
Notes, Cautions, and Warnings will be shown in the following format:
NOTE
This is a Note. Notes provide explanatory information that may be useful to the
operator, but is not necessarily vital to the operation of your SeaBat™ system.

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CAUTION
This is a Caution. Cautions provide important information regarding your SeaBat™
system. Disregarding information provided in a Caution box may result in accidental
misuse or damage to your SeaBat™ system.
WARNING!
This is a Warning. Warnings provide important information regarding your SeaBat™
system. Disregarding information provided in a Warning box may prove harmful to
personnel working with or near the system.
Chapter Arrangement
All RESON manuals are designed with the same basic structure. The following chapters
are included in this document:
Introduction provides a short summary of the SeaBat 7125 ROV sonar
system, including an overview of the architecture and the main features.
Safety Precautions provides important safety information about the SeaBat
7125 ROV sonar system.
System Startup and Shutdown provides detailed information about how to
start and shut down the SeaBat 7125 ROV sonar system.
System Configuration provides detailed information about how to configure
the SeaBat 7125 ROV sonar system.
System Operation provides detailed information about the user interface and
operation of the SeaBat 7125 ROV sonar system.
Active Sonar Usage provides detailed information about the practical usage
of the SeaBat 7125 ROV sonar system.
System Performance and Data Types provides information about the types
of data produced by the SeaBat 7125 ROV sonar system.
In addition to the above chapters, these appendixes have been included for reference:
Appendix A: Troubleshooting
Appendix B:Installation Instructions
Appendix C:Reference Documentation
Appendix D:SeaBat 7125 ROV System Options
Appendix E:Available SeaBat 7125 Configurations
Appendix F:Warranty Information
Appendix G:Glossary of Terms
If you require additional information or need clarification of any part of this document,
please contact RESON Customer Support for assistance at [email protected].

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1 INTRODUCTION
1.1 System Overview
The SeaBat 7125 ROV (for Remotely Operated Vehicle) is a high-resolution multibeam
sonar system that measures relative water depths over a 128° (or 140°
1
) wide swath
perpendicular to the vessel's track.
The SeaBat 7125 ROV is designed for installation on a remotely operated vehicle for
deep-water use and operates as a single-frequency system at 400kHz. The addition of a
second projector operating at 200kHz allows the system to operate as a dual-frequency
system providing long-range functionality with the 200kHz unit and high-resolution
functionality with the 400kHz unit.
Figure 1: SeaBat 7125 ROV Sonar System
For available feature packages, see Appendix E.2 Feature Packages.
1.2 System Architecture
The SeaBat 7125 ROV multibeam sonar system consists of a sonar processing unit, the
7125 processor, a link control unit (LCU), a receiver unit, and a projector unit (or two
projector units). A 25 meter cable connects the processor with the LCU, and 3 meter
cables connect the receiver and projector units to the LCU. User displays and system
control originate within the processor.
1
Available with the Efficiency feature package (see Table 22).

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For details on the various system components, see Appendix B Installation Instructions.
EM 7216
Receiver Unit TC 2160
Projector Unit Optional TC 2163 Projector Unit
Monitor
Keyboard, mouse
WET END
DRY END
7125 Processor
Optional PDS2000
(incl. 2 additional monitors)
Link Control Unit
Figure 2: SeaBat 7125 ROV System Configuration
2
For available configurations, see Appendix E Available SeaBat 7125 Configurations.
For available system options, see Appendix D SeaBat 7125 System Options.
1.3 System Operation
The projector unit of the sonar head assembly transmits a pulse of acoustic energy,
which travels through the water medium and is reflected by the seafloor or any objects in
its path. The reflected signal is received by the receiver unit of the sonar head assembly,
digitized by internal electronics, and sent via the LCU to the topside 7125 processor for
beamforming and processing. The processor generates the video displayed on the
monitor and formats a digital output to be used by a peripheral bathymetric data
processing system (or the optional PDS2000 DAC preinstalled on the 7125 processor)
while functioning as the control interface between the operator and the sonar system.
2
It is possible to connect four monitors to the processor.

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1.4 System Features
The main features of the SeaBat 7125 ROV system are summarized below. Depending
on the feature package purchased
3
, all features may not be available (see appendix E.2
Feature Packages).
Resolution: Dynamic, focused beamforming maintains ultra-high resolution,
even at short ranges. A receiver sample rate of 34kHz provides
unprecedented range resolution and complements the narrow beam, thus
providing the user with ultimate data quality and resolution.
Fast Update: The entire 128° (or 140°) swath is illuminated with a single
transmission at an update rate of up to 50Hz (range selection dependent),
maintaining 100% bottom coverage, even at high speed.
Depth Rating: The SeaBat 7125 ROV is depth-rated to 6000 meters.
Data Output: The SeaBat 7125 ROV exports the standard hydrographic
records of bathymetry, side-scan, and snippets as well as water column data
and other data for more scientific applications.
Beamforming: The 7125 processor performs initial signal processing, a
combination of time delay and phase rotation beamforming.
Bottom Detection: The special bottom detection algorithm uses a
combination of center-of-energy and phase-zero crossing algorithms to detect
the bottom in each individual beam with the highest possible accuracy.
Uncertainty Output: Uncertainty is computed for each sounding and
presented graphically on various UI (user interface) displays.
Variable Swath Coverage: This feature gives the operator control of the
swath coverage. It includes swath width settings ranging from 45º to 128º (or
140º) in increments of 5° as well as a choice of beam density mode.
Auto Pilot: This feature allows for automatic update of certain sonar settings.
When Autopilot mode is initiated, the SeaBat analyzes bottom detection data
to determine the average bottom depth and maximum usable swath angle,
then optimizes the sonar settings accordingly consistent with a user-
configurable look-up table.
Real-Time QC Display: The SeaBat 7125 ROV generates a real-time display
with an intensity image on a high resolution 19-inch LCD monitor. Overlaid on
this intensity image is the bottom detection display, giving the operator an
excellent QC (quality control) tool.
Equidistant Footprint Selection: The SeaBat 7125 ROV offers the operator
a choice between 256 and 512 equiangular or equidistant beams with the
400kHz frequency. All four options are dynamically focused. The optional
200kHz frequency operates with 256 equiangular or equidistant beams.
Hardware Sync Pulse Out: A TTL pulse (synchronous with the transmitter
pulse) is available from the 7125 processor.
3
Feature Packages include Standard and Efficiency.

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1PPS Pulse Handling and Time Stamping: Data time stamping is
referenced to an incoming 1PPS and associated time message.
External Trigger: The system may be triggered using a standard 7k Center
software remote command or by a TTL incoming trigger pulse.
Adaptive Gating: Three different gate settings are available for application to
the bottom detection process: No Gates, Absolute Gates, and Adaptive Gates.
Beam Data Recording: The SeaBat 7125 ROV is capable of producing a
stream of beam data that is operator configurable and may be written to either
the 7125 processor local hard drive or an optional external RAID hard disk
array. Data logging software controls recording, playback, and data storage
functions.
Built-In Test Environment (BITE): BITE is an integral part of the SeaBat
7125 ROV monitoring the status of internal subsystems and the wet-end units.
1.5 Typical Applications
The SeaBat 7125 ROV sonar system is based around RESON‟s 7125 processor. This
modular approach allows great flexibility and provides support for a wide range of
applications including:
As-built surveys
Breakwater mapping
Coastal mapping
Harbor mapping
Hydrographic surveys to IHO
Special Order and to U.S. Army
Corps of Engineers Special Order
Pipeline inspection surveys
Pipeline route surveys
Pre- and post-dredging and
condition surveys
Revetment surveys
River surveys
Search and recovery
Site clearance surveys
Underwater inspection and object
location