Edgetech 4125 Series Installation and operating instructions

EdgeTech
4 Little Brook Road
West Wareham, MA 02576
Tel: [phone]
Fax: [phone]
www.EdgeTech.com
4125 MAGNETOMETER INTERFACE
ADDENDUM
0016510_REV_C 3/30/2018

ii
4125 MAGNETOMETER INTERFACE 0016510_REV_C
The information, figures, and specifications in this manual are proprietary and are issued in strict
confidence on condition that they not be copied, reprinted, or disclosed to a third party, either wholly or
in part, without the prior, written consent of EdgeTech. Any reproduction of EdgeTech supplied software
or file sharing is strictly prohibited.
Copyright © 2015 – 2018 EdgeTech. All rights reserved.

iii
ATTENTION – READ THIS FIRST!
All personnel involved with the installation, operation, or maintenance of the equipment described in this
addendum 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 anti-static
protection materials and grounding straps for personnel.
WARNING!High Voltage may be present in all parts of the system.
Therefore, use caution when the electronics are removed from their
containers for servicing.
CAUTION!Operation with improper line voltage may cause serious
damage to the equipment. Always ensure that the proper line voltage is
used.
Warnings, Cautions, and Notes
Where applicable, warnings, cautions, and notes are provided in this manual as follows:
WARNING! Identifies a potential hazard that could cause injury or death.
CAUTION! Identifies a potential hazard that could damage equipment or
data.
NOTE: Recommendations or general information that is particular to the
material being presented.

iv
4125 MAGNETOMETER INTERFACE 0016510_REV_C
HARDWARE VARIATIONS AND COMPATIBILITY
The 4125 Magnetometer Interface 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 EDGETECH CUSTOMER SERVICE with any questions relating to compatibility.

v
ABOUT THIS DOCUMENT
We, the employees at EdgeTech, would like to thank you for purchasing a 4125 Magnetometer Interface.
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 Addendum
The purpose of this addendum is to provide the user with information on the setup and use of EdgeTech’s
4125 Magnetometer Interface. Although this addendum encompasses the latest operational features of
the 4125 Magnetometer Interface, some features may be periodically upgraded. Therefore, the
information in this addendum is subject to change and should be used for reference only. The addendum
is also meant to be used in conjunction with the 4125 Hardware Manual.
Liability
EdgeTech has made every effort to document the 4125 Magnetometer Interface in this addendum
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
REVISION
DESCRIPTION
DATE
APPROVAL
A Release to Customer 02/01/2015 TS
B Update Images & Format 01/11/2017 TS
C Updates to Information 03/30/2018 TS

vi
4125 MAGNETOMETER INTERFACE 0016510_REV_C
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.
CAUTION! If your product is a portable topside, never attempt to ship it
in its Storm CaseTM alone. Shipping portable topsides without an exterior
shipping crate will void the warranty.

vii
RETURNED MATERIAL AUTHORIZATION
Prior to returning any equipment to EdgeTech, a Returned
Material Authorization (RMA) number must be obtained.
The RMA will help identify returned equipment when it arrives at our receiving dock and enables tracking
of the equipment while at our facility. The material should be shipped to EdgeTech, 4 Little Brook Road,
West Wareham, MA 02576. Refer to the RMA number on all documents and correspondences.
All returned materials must be shipped prepaid. Freight collect shipments will not be accepted. EdgeTech
will pay freight charges on materials going back to the customer after they have been evaluated and/or
repaired. If the equipment is the property of EdgeTech, please insure for full value.
All shipments must be accompanied by three copies of your proforma invoice, with the value of the
material, and the reason for return. If the reason is for repair, it must be clearly stated in order to move
through customs quickly and without duties being charged. Whenever possible, please send copies of
original export shipping documents with the consignment.
If there is more than one item per consignment, a packing list must accompany the shipment, which can
be combined with the invoice if the contents of each carton are clearly numbered and identified.
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 the product is under warranty.
Foreign and Domestic Shipping Return Instructions
1. The items must be sent prepaid to EdgeTech – using a reputable company. Freight collect
shipments will not be accepted. Small items can be shipped prepaid directly to EdgeTech via
FedEx, DHL, UPS, Airborne, etc.
2. For your protection, all items should be fully insured. EdgeTech will not assume any responsibility
for damage to the shipment while in transit inbound or outbound.
3. Items within the warranty period must be sent prepaid to our door – using a reputable company.
EdgeTech will only pay for return shipping charges, if damage was not caused by misuse and the
product is within warranty.

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4125 MAGNETOMETER INTERFACE 0016510_REV_C
International Shipping Return Instructions
The following steps only apply to material being returned from outside the Continental United States, and
must be followed carefully to prevent delays and additional costs:
1. The waybill and all shipment documentation associated with the shipment must clearly state that
the Country of Origin/Manufacturer is USA.
2. The waybill and all associated shipment documents must state the following to eliminate
taxes levied: United States goods returned to manufacturer for repair purposes only.
3. The waybill and all documents associated with the shipment must state the following for
description (HS Tariff Code eliminates duty charges): Geophysical Scientific Instrumentation; Side
Scan System, Beacons; HS Tariff Code: 9015.80.80.80
4. If using a freight forwarder, ensure they understand that the goods are duty & tax free United
States goods returned to manufacturer for repair only. Additionally, please instruct the freight
forwarder that the shipment is FREE DOMICILE and must be delivered to our door.
5. Please send all shipping documents in advance of the shipment by email to
[e-mail]. Providing EdgeTech with the shipping documents will enable us to
follow up with the carrier on our end.
Also include EdgeTech’s broker information below on the commercial invoice:
Attn: Brenda Richards | Terri DiOrio
TransGroup BOS INTL, 140 Eastern Ave, Chelsea MA 02150
Office: 617-889-5089 TF: 877-839-3353 Fax: [phone]
[e-mail] | [e-mail]
NOTE: For International Shipments, If the value of the equipment is over
$1000, the following Shipper's oath must be sent with the invoice. This
oath can be typed on the invoice or on a separate letterhead:
"I, ______________________________, declare that the articles herein specified are the growth,
produce, or manufacture of the United States; that they were exported from the
United States from the port of _____________________, on or about _______________; that they
are returned without having been advanced in value or improved in condition by any
process of manufacture or any other means; and that no drawback, or allowance has
been paid or admitted hereof."
Signed ______________________________

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:
NOTE: Please have your system Model and Serial Number available when
contacting Customer Service.
E-mail: [e-mail]
Mail: 4 Little Brook Road
West Wareham, MA 02576
Telephone: [phone]
Facsimile: [phone]
24-Hour Emergency
Technical Support Line: [phone]
For more information please go to www.EdgeTech.com.

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4125 MAGNETOMETER INTERFACE 0016510_REV_C
COMPANY BACKGROUND
EdgeTech (formerly EG&G Marine Instruments) traces its history in underwater data acquisition and
processing back to 1966. EdgeTech has designed, developed, and manufactured products, instruments,
and systems—for the acquisition of underwater data, including marine, estuarine, and coastal
applications—for over 45 years.
The company has responded to the needs of the scientific, naval, and offshore communities by providing
equipment—such as sub-bottom profilers, side scan sonar, acoustic releases, USBL positioning systems,
and bathymetric systems—that have become standards in the industry.
EdgeTech has also consistently anticipated and responded to future needs through an active research and
development program. Current efforts are focused on the application of cutting-edge CHIRP and acoustic
technology.

xi
TABLE OF CONTENTS
ATTENTION – READ THIS FIRST! .........................................................................................................iii
HARDWARE VARIATIONS AND COMPATIBILITY..................................................................................iv
ABOUT THIS DOCUMENT....................................................................................................................v
Purpose of this Addendum ....................................................................................................................... v
Liability...................................................................................................................................................... v
Warnings, Cautions, and Notes................................................................................................................ iii
Revision History ........................................................................................................................................ v
WARRANTY STATEMENT ...................................................................................................................vi
RETURNED MATERIAL AUTHORIZATION ...........................................................................................vii
CUSTOMER SERVICE..........................................................................................................................ix
COMPANY BACKGROUND ..................................................................................................................x
TABLE OF CONTENTS.........................................................................................................................xi
LIST OF FIGURES & TABLES ...............................................................................................................xii
1.0 OVERVIEW.............................................................................................................................1-1
1.1 Mechanical Interface .................................................................................................................1-2
2.0 SPECIFICATIONS.....................................................................................................................2-1
3.0 SETUP....................................................................................................................................3-1
3.1 Configure the Towfish ...............................................................................................................3-2
3.2 Configure the Topside ...............................................................................................................3-7
4.0 VERIFYING AND TROUBLESHOOTING......................................................................................4-1

xii
4125 MAGNETOMETER INTERFACE 0016510_REV_C
LIST OF FIGURES & TABLES
Figure 1-1: Marine Magnetics Tow Key .....................................................................................................1-1
Figure 1-2: EdgeTech Fork Coupler for Marine Magnetic Magnetometer, PN 0015842...........................1-2
Figure 1-3: Connection Setup for Marine Magnetics Mini Explorer Magnetometer ................................1-3
Figure 1-4: Connection Assembly Close-up for Mini Explorer Magnetometer..........................................1-3
Figure 2-1: EdgeTech 4125-LT Magnetometer / Power Y-Splice ...............................................................2-2
Figure 3-1: Installation ...............................................................................................................................3-1
Figure 3-2: Launch Remote Desktop..........................................................................................................3-2
Figure 3-3: Log Into Sonar.exe ...................................................................................................................3-2
Figure 3-4: Close Sonar.exe........................................................................................................................3-3
Figure 3-5: Launch Windows Explorer .......................................................................................................3-3
Figure 3-6: Navigate to SonarSerial.ini ......................................................................................................3-4
Figure 3-7: Open a Text Editor ...................................................................................................................3-4
Figure 3-8: Edit SonarSerial.ini in WordPad...............................................................................................3-5
Figure 3-9: Save Changes to SonarSerial.ini...............................................................................................3-6
Figure 3-10: Restart Sonar.exe...................................................................................................................3-6
Figure 3-11: Discover Configuration Drop-Down Menu ............................................................................3-7
Figure 3-12: Serial Configuration ...............................................................................................................3-7
Figure 3-13: Enable Remote COM Port, Port.............................................................................................3-8
Figure 3-14: Enable Remote COM Port, Baud Rate ...................................................................................3-8
Figure 3-15: Enable Remote COM Port, Logical Port ................................................................................3-8
Figure 3-16: Serial Configuration Menu.....................................................................................................3-9
Figure 4-1: Launch Remote Desktop..........................................................................................................4-1
Figure 4-2: Misc Drop-Down Menu............................................................................................................4-1
Figure 4-3: Serial Port Chan 5 on COM4 ....................................................................................................4-2
Figure 4-4: No Errors with Mag Data Scrolling...........................................................................................4-2
Figure 4-5: No Data with Error Displayed ..................................................................................................4-3
Figure 4-6: TeraTerm COM Port Test.........................................................................................................4-3
Table 2-1: Magnetometer Interface Specifications ...................................................................................2-1

1-1
1.0 OVERVIEW
EdgeTech’s magnetometer interface option allows users with a 4125 LT with Mag Option system to
simultaneously tow a magnetometer along with the Towfish. In doing so, users can gather side scan data
while simultaneously recording the Earth’s magnetic field strength throughout the survey.
NOTE: The 4125 E-Net side scan system is not compatible with the Mag
Option.
Currently, EdgeTech offers an interface package for Marine Magnetics SeaSPY II and Mini Explorer
magnetometers. No other brands or models can be interfaced with the 4125 LT now.
The magnetometer interface involves the following connection types to function:
•Mechanical
•Electrical
•Digital telemetry
The client needs to purchase the Universal Link (TAB) when placing the order for a combined Side Scan /
Magnetometer system, and to provide the brand and model number of the magnetometer they would
like their system to interface with, shown in FIGURE 1-1. If a client wants to interface a magnetometer to
an existing side scan system, an interface kit needs to be ordered from both EdgeTech and the
magnetometer supplier.
Figure 1-1: Marine Magnetics Tow Key

1-2
Customers who wish to add a magnetometer to their current 4125 LT systems also need to contact
EdgeTech to have their serial number checked in order to see if the system is eligible for the upgrade. The
customer may have to send in the 4125 LT Towfish to EdgeTech if they have an older model.
If the customer is eligible for the add on option, they need to order an interface kit P/N 0016344 from
EdgeTech as well as the magnetometer manufacturer. The EdgeTech kit consists of:
•4125 LT Magnetometer Option Fork coupler.
•Y-Cable splice to connect the existing tow cable to the side scan and magnetometer.
•All hardware needed to add coupler and interface with Universal Link (TAB)
1.1 Mechanical Interface
Typically, the magnetometer manufacturer will provide a 10m tow cable with a mechanical termination
to connect to the side scan tow arm. In turn, EdgeTech provides a custom tow point key for the
magnetometer. The tow key is attached to the side scan tow arm through a clevis pin, as shown in FIGURE
1-2.
If the side scan Towfish hits something, the tow arm shears from the housing, the magnetometer stays
attached to the key and tow cable, and the fish is retrieved from the tail by the Recovery cable.
The magnetometer connects to the breakaway arm using a clevis pin that allows swivel action but does
not allow the magnetometer to rotate. Since the Magnetometer is lighter than the side scan, it will tow
aft and above the side scan.
Figure 1-2: EdgeTech Fork Coupler for Marine Magnetic Magnetometer, PN 0015842
TOW ARM
SEASPY II / MINI-EXPLORER
UNIVERSAL LINK (TAB)

1-3
Figure 1-3: Connection Setup for Marine Magnetics Mini Explorer Magnetometer
Figure 1-4: Connection Assembly Close-up for Mini Explorer Magnetometer
INCLUDED IN KIT
SUPPLIED BY CUSTOMER
UNIVERSAL LINK (TAB)
SHEAR PIN
RESTRAIN MAG DATA
CABLE WITH CABLE TIE AT
THESE POINTS
Y SPLICE

2-1
2.0 SPECIFICATIONS
The electrical interface between the 4125 LT and the SeaSPY II or the Mini Explorer is via an 8-pin Micro
Subconn connection (MCIL8F/MCBH8M) through a Y-Splice cable (see FIGURE 1-5) provided by EdgeTech.
The RS-232 interface is setup for 9600 baud, 8 bits, 1 stop, no parity.
SPECIFICATIONS
PIN OUT SPECS
Pin 1
12 VDC
Pin 2
GND
Pin 3
Side Scan Tx / Mag Rx (RS-232)
Pin 4
Side Scan Rx / Mag Tx (RS-232)
Pin 5
Return and RS-232 Ground
Pin 6
N/C
Pin 7
N/C
Pin 8
N/C
OPERATING SPECS
Mini Explorer
8V Min / <0.5 A
(or internal fuse in Mini Explorer will trip)
SeaSPY2
(See Note Below)
9V Min / <0.5 A
(or internal fuse in SeaSPY2 will trip)
POWER SPECS
Max Power
0.5 Amp @ 12.5 VDC
Table 2-1: Magnetometer Interface Specifications
NOTE: SeaSPY2 Cable Interface from Marine Magnetics Part Number,
TCSSS-T-4125, is required when interfacing a SeaSPY2 with a 4125 LT Side
Scan Tow Fish.

Figure 2-1: EdgeTech 4125-LT Magnetometer / Power Y-Splice

3-1
3.0 SETUP
The EdgeTech Side Scan Telemetry is used to transfer the magnetometer data to the Topside. The
Magnetometers have a bidirectional RS-232 interface at 9600 bps. The magnetometer data is read by the
Towfish electronics, encoded onto the side scan telemetry, and then decoded on the EdgeTech Portable
Topside Laptop or Rack Mount with Topside and is made available on a PC standard Com port. Control
messages from the PC hosting the magnetometer user interface software, are likewise transferred to the
magnetometer Towfish. A null modem serial cable is required to connect the EdgeTech topside to a laptop
or PC running the magnetometer acquisition software (Sealink, Maglog, etc.).
The EdgeTech telemetry allow for a full bi-directional communication link between the topside and the
magnetometer, where data flow upstream and commands flow downstream.
To properly relay the ‘Mag’ data from the Towfish onto the PC/laptop running the magnetometer
acquisition software, the SONAR program running in the Towfish and the DISCOVER Software on the
Topside need to be properly configured. The following shows the required fields in the initiation files. This
feature must be added to Towfish and is password protected. If the password was previously installed
follow the procedure below. If the password has not been installed contact EdgeTech for support. The
Towfish needs to be properly connected to the topside and powered up to perform this procedure.
1. Connect Towfish Cable Extension to the Y-Splice Towfish Extension Cable Connector
2. Connect Female Tow Cable Connector into the Male Y-Splice Tow Cable Connector
3. Connect Y-Splice Magnetometer Female Connector into the Male connector on the Mini-Explorer
or SeaSpy 2 Magnetometer Tow Cable:
Figure 3-1: Installation
1
2
3

3-2 3.0 SETUP
4125 MAGNETOMETER INTERFACE 0016510_REV_C
3.1 Configure the Towfish
The Towfish has a file that needs to be configured if a Baud other than the Default 9600 is to be used.
Towfish setup:
1. Connect to the Towfish using Windows Remote Desktop on the topside computer.
Figure 3-2: Launch Remote Desktop
a. Remote Desktop settings if needed are:
Ethernet address: 192.9.0.101
Login name: Administrator
Password: admin
Figure 3-3: Log Into Sonar.exe
2) Left Click using mouse button to select “Remote Desktop”
Click OK
1) Right Click Right Click using
Password = admin