Edgetech 4125 Series User manual

EdgeTech
4 Little Brook Road
West Wareham, MA 02576
Tel: [phone]
Fax: [phone]
www.EdgeTech.com
4125 MAGNETOMETER INTERFACE
USER HARDWARE MANUAL
0016510_REV_A February 2015

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

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ATTENTION – READ THIS FIRST!
All personnel involved with the installation, operation, or maintenance of the equipment described in
this manual should read and understand the warnings and cautions provided below.
CAUTION!
This equipment contains devices that are extremely sensitive to static
electricity. Therefore, extreme care should be taken when handling
them. Normal handling precautions involve the use of 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.

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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.
4125 MAGNETOMETER INTERFACE 0016510_REV_A

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ABOUT THIS DOCUMENT
We, the employees at EdgeTech, would like to thank you for purchasing 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 Manual
The purpose of this manual is to provide the user with information on the setup and use of EdgeTech’s
4125 Mag Interface. Although this manual encompasses the latest operational features of the 4125 Mag
Interface, some features may be periodically upgraded. Therefore, the information in this manual is
subject to change and should be used for reference only.
Liability
EdgeTech has made every effort to document the 4125 Mag Interface in this manual accurately and
completely. However, EdgeTech assumes no liability for errors or for any damages that result from the
use of this manual or the equipment it documents. EdgeTech reserves the right to upgrade features of
this equipment, and to make changes to this manual, without notice at any time.
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.

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WARRANTY STATEMENT
All equipment manufactured by EdgeTech is warranted against defective components and workmanship
for a period of one year after shipment. Warranty repair will be done by EdgeTech free of charge.
Shipping costs are to be borne by the customer. Malfunction due to improper use is not covered in the
warranty, and EdgeTech disclaims any liability for consequential damage resulting from defects in the
performance of the equipment. No product is warranted as being fit for a particular purpose, and there
is no warranty of merchantability. This warranty applies only if:
i. The items are used solely under the operating conditions and in the manner recommended in
Seller's instruction manual, specifications, or other literature.
ii. The items have not been misused or abused in any manner, nor have repairs been attempted
thereon without the approval of EdgeTech Customer Service.
iii. Written notice of the failure within the warranty period is forwarded to Seller and the directions
received for properly identifying items returned under warranty are followed.
iv. The return notice authorizes Seller to examine and disassemble returned products to the extent
Seller deems necessary to ascertain the cause for failure.
The warranties expressed herein are exclusive. There are no other warranties, either expressed or
implied, beyond those set forth herein, and Seller does not assume any other obligation or liability in
connection with the sale or use of said products. Any product or service repaired under this warranty
shall be warranted for the remaining portion of the original warranty period only.
Equipment not manufactured by EdgeTech is supported only to the extent of the original manufacturer's
warranties.
4125 MAGNETOMETER INTERFACE 0016510_REV_A

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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.
Software Updates and Enhancements
EdgeTech customers can download new software releases with all modifications and enhancements
from the EdgeTech ftp site. Major software issues, should they occur, will be reported directly to the
customer. New software releases consist of the following:
•Software enhancements that are not on the price list
•Software fixes and changes
•Product integration
•Documentation updates to on-line help
•Tests for compatibility with other modules
Software patches consist of software that has undergone the following:
•Minor software enhancements
•Software fixes and changes
•Software Telephone, Facsimile, and E-mail Support
EdgeTech customers are entitled to contact EdgeTech Customer Service by telephone, facsimile, or e-
mail to report a difficulty, to discuss a problem or to receive advice on the best way to perform a task.
When contacted, EdgeTech Customer Service will do the following:
•Respond within 24 hours
•Immediately attend to serious problems affecting operations
•Attempt to find an immediate work-around

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RETURNED MATERIAL AUTHORIZATION
Prior to returning any equipment to EdgeTech, a Returned Material Authorization (RMA) number must
be obtained. The RMA will help us identify your equipment when it arrives at our receiving dock and
track the equipment while it is at our facility. The material should be shipped to the address provided in
the EdgeTech Customer Service section. Please refer to the RMA number on all documents and
correspondences as well.
All returned materials must be shipped prepaid. Freight collect shipments will not be accepted.
EdgeTech will pay freight charges on materials going back to the customer after they have been
evaluated and/or repaired.
CAUTION!
If your product is a portable topside, never attempt to it 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 if used in this manner.
The following steps apply only to material being returned from outside the Continental United States.
Follow them carefully to prevent delays and additional costs.
1. All shipments must be accompanied by three copies of your proforma invoice, showing the
value of the material and the reason for its return. If the reason is for repair, it must be clearly
stated in order to move through customs quickly and without duties being charged. Whenever
possible, please send copies of original export shipping documents with the consignment.
2. If the value of the equipment is over $1000, the following Shipper's oath must be sent with the
invoice. This oath can be typed on the invoice, or on a separate letterhead:
"I, ______________________________, declare that the articles herein specified are the
growth, produce, or manufacture of the United States; that they were exported from the United
States from the port of _____________________, on or about _______________; that they are
returned without having been advanced in value or improved in condition by any process of
manufacture or any other means; and that no drawback, or allowance has been paid or
admitted hereof."
Signed ______________________________
4125 MAGNETOMETER INTERFACE 0016510_REV_A

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3. If there is more than one item per consignment, a packing list must accompany the shipment. It
is acceptable to combine the proforma invoice and packing list as long as the contents of each
carton are clearly numbered and identified on the invoice.
4. Small items can be shipped prepaid directly to EdgeTech by FedEx, DHL, UPS, Airborne, etc.
5. If the equipment is the property of EdgeTech (formerly EG&G Marine Instruments Division),
please insure for full value.
6. Fax one invoice, packing list, and a copy of the airway bill to EdgeTech upon shipment.

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CUSTOMER SERVICE
Customer service personnel at EdgeTech are always eager to hear from users of our products. Your
feedback is welcome, and is a valuable source of information which we use to continually improve these
products. Therefore we encourage you to contact EdgeTech Customer Service to offer any suggestions
or to request technical support:
NOTE: Please have your system 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.
4125 MAGNETOMETER INTERFACE 0016510_REV_A

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

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TABLE OF CONTENTS
ATTENTION – READ THIS FIRST! .........................................................................................................iii
HARDWARE VARIATIONS AND COMPATIBILITY..................................................................................iv
ABOUT THIS DOCUMENT....................................................................................................................v
Purpose of this Manual............................................................................................................................. v
Liability...................................................................................................................................................... v
Warnings, Cautions, and Notes................................................................................................................. v
WARRANTY STATEMENT ...................................................................................................................vi
SOFTWARE SERVICE OVERVIEW........................................................................................................vii
Software Updates and Enhancements.................................................................................................... vii
RETURNED MATERIAL AUTHORIZATION ..........................................................................................viii
CUSTOMER SERVICE...........................................................................................................................x
COMPANY BACKGROUND .................................................................................................................xi
TABLE OF CONTENTS........................................................................................................................xii
LIST OF FIGURES & Tables................................................................................................................xiii
Figures.....................................................................................................................................................xiii
Tables ......................................................................................................................................................xiii

SECTION 1: OVERVIEW...............................................................................................................1-1
1.1 Mechanical Interface .......................................................................................................................1-2
1.2 Electrical Interface ...........................................................................................................................1-4
1.3 Magnetometer Digital Interface / Serial Device ..............................................................................1-5

SECTION 2: Magnetometer setup ...............................................................................................2-1
2.1 Configure the Tow Fish ....................................................................................................................2-1
2.2 Configure the Topside......................................................................................................................2-4

SECTION 3: VERIFYING & TROUBLESHOOTING ............................................................................3-1
4125 MAGNETOMETER INTERFACE 0016510_REV_A

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LIST OF FIGURES & TABLES
Figures
Figure 1-1: Marine Magnetics Tow Key .....................................................................................................1-1
Figure 1-2: EdgeTech Fork Coupler for Marine Magnetic Magnetometer ................................................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 Mangetometer..........................................1-3
Figure 1-5: EdgeTech 4125 LT Mag / Power Y-Splice.................................................................................1-5
Figure 2-1:Serial Configuration Menu........................................................................................................2-6
Figure 4-1: No Errors with Mag Data Scrolling...........................................................................................3-2
Figure 4-2: No Data with Error Displayed ..................................................................................................3-3
Figure 4-3: TeraTerm COM Port Test......................................................................................................... 3-3
Tables
Table 1-1: Specifications ............................................................................................................................1-4

1-1
SECTI ON 1 :
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 at this time.
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 (see 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 SECTION 1: OVERVIEW
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 tow fish 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 Mag 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 (see Figure 1-2).
In the event that 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)
4125 MAGNETOMETER INTERFACE 0016510_REV_A

1-3
Figure 1-3: Connection Setup for Marine Magnetics Mini Explorer Magnetometer
Figure 1-4: Connection Assembly Close up for Mini Explorer Magnetometer
Shear Pin
Restrain Mag Data
Cable with Cable tie
at these points
Included in Kit
Supplied By Customer
Universal Link (TAB)
Y Splice

1-4 SECTION 1: OVERVIEW
1.2
Electrical Interface
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)
SeaSpyII
9V Min / <0.5 A
(or internal fuse in SeaSpyII will trip)
POWER SPECS
Max Power
0.5 Amp @ 12.5 VDC
Table 1-1: Specifications
4125 MAGNETOMETER INTERFACE 0016510_REV_A

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Figure 1-5: EdgeTech 4125 LT Mag / Power Y-Splice
1.3
Magnetometer Digital Interface / Serial Device
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 tow fish as well as the DISCOVER software
running on the topside need to be configured properly. The following shows the required fields in the
initiation files. This is a feature that has to be added to tow fish and is password protected. If you have
already had the password installed follow the following procedure, if the password has not been

1-6 SECTION 1: OVERVIEW
installed contact EdgeTech for support. The tow fish needs to be properly connected to the topside and
powered up to perform this procedure.
1.4
Connecting the Magnetometer to the 4125 Tow Fish
1) Connect Tow Fish Cable Extension to the Y-Splice Tow Fish 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 :
1)
2)
3)
4125 MAGNETOMETER INTERFACE 0016510_REV_A