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Edgetech 4205 User Hardware Manual

Side scan system
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4205 SIDE SCAN SYSTEM
U S E R H A R D W A R E M A N U A L
0021769_REV_H
10/22/2024
EdgeTech
4 Little Brook Road
West Wareham, MA 02576
Tel: (508) 291-0057
Fax: (508) 291-2491
www.EdgeTech.com

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  • Page 1 4205 SIDE SCAN SYSTEM U S E R H A R D W A R E M A N U A L 0021769_REV_H 10/22/2024 EdgeTech 4 Little Brook Road West Wareham, MA 02576 Tel: (508) 291-0057 Fax: (508) 291-2491 www.EdgeTech.com...
  • Page 2 The information, figures, and specifications in this manual are proprietary. They 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.

  • Page 3: Attention - Read This First

    ATTENTION – READ THIS FIRST! All personnel involved with installing, operating, or maintaining 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.

  • Page 4: Hardware Variations And Compatibility

    HARDWARE VARIATIONS AND COMPATIBILITY The 4205 Side Scan System 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 and their models and styles may change from unit to unit, replacement parts will generally be interchangeable.

  • Page 5: About This Document

    Purpose of this Manual The purpose of this manual is to provide you with information on the setup and use of EdgeTech’s 4205 Side Scan System. Although this manual encompasses the latest operational features of the 4205, some features may be periodically upgraded.

  • Page 6: 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 equipment's performance.

  • Page 7: Software Service Overview

    EdgeTech provides software services free of charge. This software agreement does not address customer- specified modifications or enhancements. These services may be ordered separately. Furthermore, EdgeTech software upgrades are meant for the sole use of EdgeTech customers. Any reproduction of EdgeTech-supplied software or file sharing is strictly prohibited.

  • Page 8: Returned Material Authorization

    Refer to the RMA number on all documentation and correspondences. All returned materials must be shipped prepaid. Freight collect shipments will not be accepted. All equipment should be adequately insured for shipping, but equipment belonging to EdgeTech must be insured for full value.

  • Page 9: Customer Service

    CUSTOMER SERVICE Customer service personnel at EdgeTech are always eager to hear from you regarding our products. Your feedback is welcome and a valuable source of information that we use to improve products. Therefore, we encourage you to contact CUSTOMER SERVICE...

  • Page 10: Company Background

    — for the acquisition of underwater data, including marine, estuarine, and coastal applications — for over 50 years. EdgeTech responds to the needs of the scientific, naval, and offshore communities by providing industry- leading equipment — such as sub-bottom profilers, side-scan sonar, acoustic releases, USBL positioning systems, and bathymetric systems —...

  • Page 11: Table Of Contents

    COMPANY BACKGROUND ......................1-10 TABLE OF CONTENTS ........................1-11 LIST OF FIGURES ..........................1-15 LIST OF TABLES ..........................1-18 OVERVIEW ........................... 1-18 4205 Side Scan Sonar System Applications ................1-20 Main System Components ....................... 1-21 1.2.1 Topside Processor ....................... 1-21 1.2.2 Towfish..........................
  • Page 12 Connecting to the Topside ....................4-52 4.6.3.1 Connecting to the Starmux IV DL ................4-52 4.6.3.2 Connecting to the 4205 Rack Mount with Starmux IV DL .......... 4-53 4.6.3.3 Connecting to the 701-DL ................... 4-53 4.6.3.4 Connecting to the 4205 Rack Mount with 701-DL ............. 4-53 SYSTEM ACTIVATION, TEST, AND DEPLOYMENT ..............
  • Page 13 Disassembling the 4205 Towfish: ..................7-70 7.2.2 Assembling the Tow Vehicle ....................7-74 Standard AHRS Calibration ...................... 7-74 Starmux IV / 701-DL Troubleshooting ..................7-75 4205 Rack Mount Troubleshooting Guide ................7-76 Towfish Troubleshooting Guide ....................7-76 7.6.1 Required Equipment ......................7-77 7.6.2 4205 vehicle ........................
  • Page 14 1-14 7.7.1.4 Damaged Tow Cable Connector ................. 7-82 4205 KITS ........................... 7-83 4205 MPMT Spare Kits ......................7-83 4205 Tri-Frequency Spare Kits ....................7-84 Tool Kit ............................. 7-86 4205 SIDE SCAN SYSTEM 0021769_REV_H...

  • Page 15: List Of Figures

    Figure 2-6: Tow Cable Connections ......................2-34 Figure 2-7: 4205 MPMT and Tri-Frequency Tow Cable Connections with Pinouts ......... 2-35 Figure 2-8: 4205 MPMT and Tri-Frequency ROV Tow Cable Connections with Pinouts......2-36 Figure 2-9: Kevlar 50m Reinforced Tow Cable ..................2-37 Figure 2-10: Kevlar 150m Reinforced Tow Cable ..................
  • Page 16 Figure 5-1: Discover 4205 MPMT Sonar Activation ................. 5-57 Figure 5-2: Discover 4205 Tri-Frequency Sonar Activation ..............5-58 Figure 5-3: 4205 MPMT Shortcut High and Low-Frequency Range Fields and N (Gain) and T (TVG) Buttons ................................. 5-58 Figure 5-4: 4205 MPMT Towfish Control Range Fields ................5-58 Figure 5-5: Tri Frequency Range Entry Fields...................
  • Page 17 1-17 Figure 7-14: Sockblast Client on Topside Computer ................7-80...

  • Page 18: List Of Tables

    Table 2-4: Armored Tow Cable Specifications ..................2-28 Table 4-1: AC Power Wiring Wire Colors for Conversion ................. 4-48 Table 4-2: EdgeTech Default Reserved IP Numbers By System and Component ........4-50 Table 7-1: Troubleshooting Table ......................7-76 Table 7-2: Reported Errors ........................7-78 Table 7-3: 4205 MPMT 100-400 kHz Spare Kit ..................

  • Page 19: Overview

    1-19 1.0 OVERVIEW The EdgeTech 4205 Side Scan Sonar System is a proven and versatile side scan sonar system suitable for most shallow and deep water survey applications. The 4205 is available in either a tri-frequency side-scan sonar configuration or a motion-tolerant and multi-pulse (MTMP) configuration. All 4205 systems consist of a topside processor with a computer and a hydrodynamic stainless-steel towfish.

  • Page 20: 4205 Side Scan Sonar System Applications

    Figure 1-2: 4205 Tri-Frequency Discover, Target Logger, and Coverage Mapper Displays The 4205 has a variety of features, including: •...

  • Page 21: Main System Components

    1-21 1.2 Main System Components The 4205 Side Scan Sonar System is made up of 3 main components: Choice of 701-DL or Starmux IV Topside processor. Each is available in a rackmount version with • an EdgeTech-configured computer. • 4205 Towfish (Tri-Frequency or MPMT variant) •...

  • Page 22: Towfish

    1-22 Figure 1-5: Starmux IV in SKB Case Figure 1-6: 701-DL in 2U-SKB Case 1.2.2 Towfish The 4205 Towfish) comes in standard Tow or ROV/Tow Interface with Multi-Pulse or Tri Frequency Sonar configurations 1-1). ABLE 4205 TRI-FREQUENCY 4205 MPMT 120/410/850 kHz...

  • Page 23: Figure 1-7: 4205 Towfish Side View

    See the OWFISH ECHNICAL section of this manual for details on towfish system configurations. ESCRIPTION Figure 1-7: 4205 Towfish Side View Figure 1-8: 4205 Towfish Forward View Figure 1-9: 4205 Towfish Aft View...

  • Page 24: Tow Cables

    1.3.1 SBG AHRS The 4205 Towfish has a standard compass that provides heading, pitch, and roll. The SBG AHRS (Attitude and Heading Reference System) option offers a lightweight sensor with a MEMS-based Inertial Measurement Unit (IMU) that integrates three gyroscopes, three magnetometers, and three accelerometers.

  • Page 25: Depressor Wing

    The depressor wing attaches to the top of any 4205 Towfish and exerts a downward force, pushing it deeper as it moves through the water. The wing angle is adjustable to 0°, 5°, or 10°, depending on the desired dive angle.

  • Page 26: Specifications

    2-26 2.0 SPECIFICATIONS The standard EdgeTech 4205 Side Scan Sonar System specifications are described below. Please refer to the provided addendum or contact EDGETECH CUSTOMER SERVICE for configuration-specific information for detailed information regarding custom systems. Specifications of 4205 Side Scan Sonar System Main Components: •...

  • Page 27: 4205 Towfish Specifications

    52 kg (115 lb) Weight in saltwater: 36 kg (80 lb) Construction: Stainless steel Maximum tow cable length: 6000 m (19,680 ft) Contact EdgeTech for cable type vs. length. Depth rating: 2000 m (6560 ft) Tow cable type: Coaxial Shear pin type: 8 mm (5/16 in.) Delrin rod...

  • Page 28: Kevlar Tow Cable Specifications

    71.2 kN (16,000 lbf) Maximum Working Load 17.8 kN (4,000 lbf) Minimum Bend Radius 23 cm (9 in) Voltage Rating 1,900 VDC 9.8 Ω/km (9.8 Ω/kft) DC Resistance 6.9 Ω/km (6.9 Ω/kft) Table 2-4: Armored Tow Cable Specifications 4205 SIDE SCAN SYSTEM 0021769_REV_H...

  • Page 29: Mechanical Drawings

    2-29 2.5 Mechanical Drawings Mechanical Drawing of the Towfish and tow cable connections are provided on the following pages: 2.5.1 4205 Towfish Drawings Figure 2-1: 4205 Towfish ICD...

  • Page 30: Figure 2-2: Optional 4205 2-Foot Depressor Wing

    2-30 Figure 2-2: Optional 4205 2-Foot Depressor Wing pg.1...

  • Page 31: Figure 2-3: Optional 4205 2-Foot Depressor Wing

    2-31 Figure 2-3: Optional 4205 2-Foot Depressor Wing pg.2...

  • Page 32: Electronic Bottle And Connection Drawings

    2.5.2 Electronic Bottle and Connection Drawings PRESSURE SENSOR PORT TRANSDUCER PORTS PIN GUIDE: Pin 1: Shield Pin 2: High Frequency + Pin 3: High Frequency – PRESSURE Pin 4: Low Frequency + PLUG Pin 5: Low Frequency - Figure 2-4: 4205 MPMT Towfish Endcap Connections...

  • Page 33: Figure 2-5: 4205 Tri-Frequency Endcap Connections

    2-33 Figure 2-5: 4205 Tri-Frequency Endcap Connections...
  • Page 34 2-34 MAGNETOMETER CONNECTOR TOW CABLE CONNECTOR Figure 2-6: Tow Cable Connections...

  • Page 35: Figure 2-7: 4205 Mpmt And Tri-Frequency Tow Cable Connections With Pinouts

    PIN 4: Not Connected PIN 4: SONAR RS232 RX from Mag PIN 5: Not Connected PIN 5: Return/RS-232 GND PIN 6: Not Connected PIN 6: TRIG-MAG PIN 7: 27VDC PIN 8: GND Figure 2-7: 4205 MPMT and Tri-Frequency Tow Cable Connections with Pinouts...
  • Page 36 2-36 Figure 2-8: 4205 MPMT and Tri-Frequency ROV Tow Cable Connections with Pinouts.

  • Page 37: Cable Drawings

    2-37 2.5.3 Cable Drawings Diagrams of the optionally available cables are as follows: Figure 2-9: Kevlar 50m Reinforced Tow Cable...

  • Page 38: Figure 2-10: Kevlar 150M Reinforced Tow Cable

    2-38 Figure 2-10: Kevlar 150m Reinforced Tow Cable...

  • Page 39: Figure 2-11: Armored 250M Tow Cable

    2-39 Figure 2-11: Armored 250m Tow Cable...

  • Page 40: Figure 2-12: Armored 500M Tow Cable

    2-40 Figure 2-12: Armored 500m Tow Cable...

  • Page 41: Technical Descriptions

    (ADSL) modem in both the towfish and the topside electronics. All 4205 Towfish configurations have a stabilizer tail and a nose weighted for hydrodynamic balance. A towing arm is rigidly mounted to a tow point on the top of the towfish housing adjacent to the tow cable and option connectors.

  • Page 42: Figure 3-1: 4205 Sp/Mpmt Towfish Diagram

    3-42 Shear pin Tail cone Safety cable Towing arm Carrying Tow cable handle, one Options Connector Stainless steel connector forward and one housing Tow point Aft MP/RX transducer Forward SP/MP TX transducer Figure 3-1: 4205 SP/MPMT Towfish Diagram...

  • Page 43: 4205 Tri-Frequency Towfish

    Long-range operations can be achieved with a selection of 120/410 kHz combination, and then, on-demand, the 4205 can be changed to operate at 410/850kHz for a higher resolution survey. Target positioning is improved by integrating a more accurate heading sensor (AHRS) that can be coupled with an optional USBL.

  • Page 44: Figure 3-2: Typical 4205 System Diagram Using 1500M Tow Cable

    3-44 Figure 3-2: Typical 4205 System Diagram using 1500m tow Cable...

  • Page 45: Figure 3-3: 4205 Rack-Mounted System With The Directional Multi-Beacon Transponder/Responder Used With The Edgetech Usbl Bats

    3-45 Figure 3-3: 4205 Rack-Mounted System with the Directional Multi-Beacon Transponder/Responder used with the EdgeTech USBL BATS...

  • Page 46: Figure 3-4: Network Interface Diagram

    3-46 Figure 3-4: Network Interface Diagram...

  • Page 47: System Setup

    If any damage is found, report it to the carrier and EdgeTech. Also, check the packing list to verify that all the items on the packing list are included. If any items are missing, immediately contact EdgeTech.

  • Page 48: Magnetometer Power

    4.2.2 Magnetometer Power The Starmux IV or 701-DL can power and interface to a 4205 and power a Magnetometer. The difference between the two topsides is their ability to support additional devices (optional) and long cables (up to 6000m in length).

  • Page 49: Topside Processor Placement

    4.5 TCP/IP Address Settings The 4205 Side Scan Sonar System includes many Ethernet devices connected to a common local area network (LAN). Each device has a factory-set TCP/IP address, which does not require changing under normal circumstances.

  • Page 50: Connecting The System Components

    Table 4-2: EdgeTech Default Reserved IP Numbers By System and Component 4.6 Connecting the System Components The 4205 standard system component configuration is as follows. The 4205 Towfish is physically connected to a Starmux or 701-DL digital link using a Kevlar or armored tow cable. The digital link is physically connected to a Discover-enabled computer utilizing Ethernet Ports on each via a CAT-5 Ethernet patch cable.

  • Page 51: Connect And Attach The Tow Cable To The Towfish

    Shear pin Main I/O Figure 4-3: 4205 Towfish with Armored Tow Cable 1. Verify that the tow cable is not connected to the topside processor. 2. Attach the tail cone to the towfish and secure it with the four hex socket bolts provided.

  • Page 52: Installing A Depressor Wing And Connecting The Tow Cable

    3. Connect the Ethernet patch cable to the DATA Ethernet Connector of the Starmux IV Digital Link and the computer's ethernet connector. If it is an EdgeTech 2U, connect to the right-side Ethernet Connector. Any Category 5 Ethernet patch cable (max length = 100ft) can be used.

  • Page 53: Connecting To The 4205 Rack Mount With Starmux Iv Dl

    4-53 4.6.3.2 Connecting to the 4205 Rack Mount with Starmux IV DL IV M (PN# 0023786) Refer to for the location of the connectors while performing the steps TARMUX ANUAL below: 1. Verify that the Starmux IV DL is not connected to AC power.
  • Page 54 5. Connect the keyboard to a back-panel USB connector. 6. Connect the 2U Computer and 701DL AC power cords to their VAC Input Connectors and AC power source. 7. Connect an AC power cord to the LCD monitor and the AC power source. 4205 SIDE SCAN SYSTEM 0021769_REV_H...

  • Page 55: System Activation, Test, And Deployment

    5-55 5.0 SYSTEM ACTIVATION, TEST, AND DEPLOYMENT The 4205 can be activated after the connections to the topside processor have been completed. However, a few pre-deployment checks are required before the deployment of the towfish to verify that the system is operating properly.

  • Page 56: Sbg Ahrs Usage

    The introduction of the 4205 has allowed us to improve the heading sensor's performance by fitting a MEMS-based inertial motion sensor unit that combines data from a built-in gyroscope, accelerometer, and magnetic field sensors using a Kalman filter algorithm.

  • Page 57: Performing Pre-Deployment Checks

    5-57 outputs. EdgeTech offers two options to configure this, with the first being preferred as there are fewer potential points of error. 1. The latitude and longitude that lie on one of the agonic lines (zero magnetic declination) will be entered before shipping the system.

  • Page 58: Figure 5-2: Discover 4205 Tri-Frequency Sonar Activation

    3. Turn the sonar systems on to ensure they work properly. To do so, select the High Sonar On and Low Sonar On checkboxes for Discover 4205 MPMT or any two of the Very High Sonar On, High Sonar On, and Low SONAR On checkboxes for Discover Tri-Frequency software. Alternatively, the Tri-Frequency Shortcut Toolbar’s blue (low frequency), yellow (high frequency), and purple (very...

  • Page 59: Figure 5-5: Tri Frequency Range Entry Fields

    5. Start recording data by pressing the red record button on the Discover Toolbar or Disk Tab. Record Button Stop Recording Button Figure 5-7: 4205 MPMT Shortcut Toolbar Record Button Location Stop Recording Button Record Button Figure 5-8: 4205 MPMT Recorder Play and Stop Buttons...

  • Page 60: Figure 5-10: 4205 Mpmt Disk Tab Playback Controls Play Button

    Figure 5-10: 4205 MPMT Disk Tab Playback Controls Play Button Figure 5-11: 4205 MPMT Shortcut Toolbar Play Button Figure 5-12: 4205 Tri-Frequency Shortcut Toolbar and Disk Tab Playback Controls Play Button 8. Test that the vehicle’s compass or AHRS works properly by moving the towfish and checking that the heading, pitch, and roll are reported correctly in Discover's Main Status Line Display.

  • Page 61: Towfish Deployment

    5.4 Towfish Deployment The 4205 Tri-Frequency or a MP/MT Towfish used in SP mode can be towed at speeds of up to 4.8 knots while still meeting NOAA and IHO-44S specifications of 3 pings on a 1-meter cubed target at 100 meters range.

  • Page 62: Figure 5-15: 4205 Mpmt Bottom Track Tab

    Click the N and T buttons on the Shortcut Toolbar in Discover to normalize gain and TVG (See for MPMT and For Tri-Frequency button locations). IGURE IGURE 3. Click the Bottom Track Tab in the Lower Control panel. Figure 5-15: 4205 MPMT Bottom Track Tab 4205 SIDE SCAN SYSTEM 0021769_REV_H...

  • Page 63: Towfish Recovery

    1. Slowly retrieve the tow cable until the towfish is just below the surface. 2. Using Discover, turn the sonar off by deselecting all Sonar ON checkboxes in the Towfish Control Tab (4205 MPMT) or Sidescan Control Tab (4205 Tri-Frequency) 5-2).
  • Page 64 7. Install the 6-pin female dummy plug on the 6-pin male bulkhead connector on the towfish. 8. Refer to the section of this manual for instructions on cleaning and inspecting the AINTENANCE towfish, the tow cable, and the underwater connectors after use. 4205 SIDE SCAN SYSTEM 0021769_REV_H...

  • Page 65: Maintenance

    Storage When not in use, all the components of the 4205 System should be packed in their original shipping containers the same way they were originally shipped. Store equipment in a dry area when not in use. Recommended Spares EdgeTech recommends purchasing spare parts simultaneously with purchasing the original equipment.

  • Page 66: Troubleshooting

    Following the instructions in the previous sections and performing regular maintenance, the user should seldom encounter bugs with the 4205 System. However, If problems occur, this section will help users diagnose and fix simple bugs. It includes basic troubleshooting techniques, connector pin-outs, and wiring information to identify and correct possible setup or operational problems.

  • Page 67: Figure 7-1: Restoration Edit Image Selection

    7-67 5. Under the Image tab, select Edit Figure 7-1: Restoration Edit Image Selection 6. Browse for the backup folder located on the 0020475_Rev_” drive. The folder should have the following format XXXX_SNSSSSS. Once the folder has been selected, click OK and then OK.

  • Page 68: Figure 7-3: Restoration Restore Button

    11. Remove the USB3 flash drive and turn the power to the topside back on to verify the image has been restored successfully. Legacy Paragon Recovery Backup Instructions: The following section outlines the procedures for backing up and restoring the system drive. 4205 SIDE SCAN SYSTEM 0021769_REV_H...
  • Page 69 7-69 CAUTION! All data will be lost upon restoring the system to factory settings. Be sure to backup all data before performing the procedure below. 1. Ensure that the topside is off. 2. Insert the USB3 flash drive in a blue USB3 port. 3.

  • Page 70: Disassembling And Reassembling The Towfish

    CAUTION! Opening the electronics chassis may void the user’s warranty unless preapproved by EdgeTech. Contact EdgeTech Customer Service before opening the chassis. 7.2.1 Disassembling the 4205 Towfish: 1. Place the towfish on a clean, dry, flat surface.

  • Page 71: Figure 7-6: Aft Endcap Cable Disconnection

    7-71 4. The aft endcap should now be exposed. Carefully disconnect all of the transducer cables from their connectors. Figure 7-6: Aft Endcap Cable Disconnection 5. Remove [2] screws and [2] finishing washers from both the forward and aft sides of the housing using a Phillips screwdriver.

  • Page 72: Figure 7-8: Nylon Retaining Line Removal

    Installing the supplied grip can facilitate this (see STEP Figure 7-8: Nylon Retaining Line Removal 7. Carefully remove the nose cone by pulling it from the vehicle. Figure 7-9: Nose Cone Removal 4205 SIDE SCAN SYSTEM 0021769_REV_H...

  • Page 73: Figure 7-10: Forward Endcap Cable Disconnections

    8. The forward endcap is now exposed. Carefully disconnect all cables from their connectors. Figure 7-10: Forward Endcap Cable Disconnections 9. Attach the EdgeTech-supplied grip handle to the aft endcap by threading in the bolts. Figure 7-11: Aft Endcap Grip Handle Installation...

  • Page 74: Assembling The Tow Vehicle

    To assemble the tow vehicle, reverse the disassembly procedure. Checking and cleaning all O-ring surfaces before reassembling the vehicle is important. The O-ring surface should be debris-free and only cleaned with a lint-free cloth. EdgeTech recommends that the O-rings should be greased and replaced to ensure a watertight seal.

  • Page 75: Starmux Iv / 701-Dl Troubleshooting

    7-75 7.4 Starmux IV / 701-DL Troubleshooting SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION The POWER switch in the front or Verify that both POWER switches rear of the unit is not turned on. are on. Verify that the Starmux IV is connected to AC power.

  • Page 76: 4205 Rack Mount Troubleshooting Guide

    Table 7-2: Rackmount Troubleshooting Chart Towfish Troubleshooting Guide The 4205 Towfish is a complex computer-controlled system requiring engineering expertise and the proper test equipment. For any service or troubleshooting, please contact EDGETECH CUSTOMER SERVICE for updated instructions, drawings, documentation, tools, and guidance. This ensures success and is necessary to maintain the product’s warranty.

  • Page 77: Required Equipment

    OMMAND AND NOTE: It is recommended that all attempts be made to see if a problem is external to the towfish before opening it. Also, contact EdgeTech for approval to open the towfish chassis to avoid voiding the warranty. WARNING! When powered, high voltage (400 VDC) is always present in the electronics assembly.

  • Page 78: Reported Errors

    7.6.3 Transmission Verification The 4205 Towfish differs from older conventional side scan sonars in that the “listen for the clicking noise” test cannot be used to verify sonar transmission. Earlier sonars were driven using large transformer relays that made an audible sound when driven.

  • Page 79: Command And Data Link

    The data throughput rate can be checked using EdgeTech-supplied utilities. The SockBlast application is used to test network throughput between the 4205 Towfish and the Topside computer. This application is normally kept in the C:\EdgeTech\Utilities folder on the topside unit and D:\EdgeTech\Utilities folder on the towfish.

  • Page 80: Tow Cable Troubleshooting

    2. Short the two connector pins (or wires if un-terminated) of the shorted pair at both ends and measure the total resistance between the ends. R1 + R2 =_______________ 3. Remove the shorts. 4. Measure the resistance between a shorted pair on one end with an ohmmeter on the Rx1 scale. 4205 SIDE SCAN SYSTEM 0021769_REV_H...

  • Page 81: Open Wire

    7-81 R1 + Rs =_______________ 5. Measure the resistance from the other end. R2 + Rs =_______________ 6. Add the measurements of 5. Subtract the measurement of 2, and divide the result by 2. Rs =_________________ 7. Subtract the value of 6) from the measured values of 4) and 5). R1 =_________________ R2 =_________________ 8.

  • Page 82: Damaged Tow Cable Connector

    Pin corrosion will start to occur as long as power is still applied. Power should be immediately terminated at the topside when detected to prevent further damage to the vehicle and crew members' safety during recovery. Any exposed electrical connections will require cleaning and re-termination. 4205 SIDE SCAN SYSTEM 0021769_REV_H...

  • Page 83: 4205 Kits

    0023061 PCB ASSY TOP INTERFACE MESTECH MODEM TDSL 1006 Table 7-3: 4205 MPMT 100-400 kHz Spare Kit 0021509_REV _C ASSY TOP KIT SPARES 4205 MP 230-540 KHZ TOW FISH Part Description ASSY SUB BOARDSET E3825 CPU COM EXPRESS SLIM HEATSINK ON PCIEX CARRIER...

  • Page 84: 4205 Tri-Frequency Spare Kits

    PCB ASSY TOP POWER AMP ANALOG 850 KHZ 4200 VHF Table 7-5: 4205 MP 230-850 kHz Spare Kit A.2 4205 Tri-Frequency Spare Kits 0021880_REV_D ASSY TOP KIT SPARES 4205 TRIFREQUENCY 120 410 850 KHZ TOW FISH Part Description ASSY SUB BOARDSET E3825 CPU COM EXPRESS SLIM HEATSINK ON PCIEX...

  • Page 85: Table 7-7: 4205 Tri-Frequency 120/540/850 Spares Kit

    7-85 0021881_REV_D ASSY TOP KIT SPARES 4205 TRIFREQUENCY 230 540 850 KHZ TOW FISH Part Description ASSY SUB BOARDSET E3825 CPU COM EXPRESS SLIM HEATSINK ON PCIEX 0025342 CARRIER NO STANDOFFS 0018384 PCB ASSY TOP POWER AMP DUAL DIGITAL DDPA 230 KHZ RLJ1212 6000M...

  • Page 86: Tool Kit

    TOOL HEX KEY BALL END T HANDLE 4MM 0006970 TOOL SCREWDRIVER PHILLIPS 01 0006968 TOOL PLIER W/SIDE CUTTERS 0019478 LABEL SHEET WHITE MAILING 04 INCH 1.33 INCH 0021213 DOC TEMPLATE 4205 HARDWARE / TOOLS KIT LABEL SET Table 7-8: 4205 Tool Kit 4205 SIDE SCAN SYSTEM 0021769_REV_H...