Related Manuals for Marine Magnetics SeaSPY2
Summary of Contents for Marine Magnetics SeaSPY2
- Page 1 SeaSPY2 Operation Manual Rev. 2023-12 Marine Magnetics Corporation Tel: 1-905 479-9727 135 SPY Court fax: 1-905 479-9484 Markham, Ontario support@marinemagnetics.com L3R 5H6 www.marinemagnetics.com Canada...
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Page 2: Table Of Contents
Getting Started with a New Gradiometer System Upgrading to a Gradiometer System 5 ... SEASPY2 COMMANDS ..............16 Normal Commands Gradiometer Mode Commands Isolation Transceiver Commands 6 ... SEASPY2 DATA FORMAT .............. 20 Standard Format 6.1.1 Warning Messages Compact Format SIS-1000 Compatible Format Gradiometer Data Format 7 ... - Page 3 SeaSPY2 Operation Manual v.6.5 Digital Systems Communication Baud Rate Electrical Power Mechanical Tow Point and Electrical connector Pin-out 8 ... ESTIMATING TOWING DEPTH ............25 9 ... INSIDE THE TOWFISH ..............27 Standard Towfish 10 . MAINTENANCE ................29 10.1 Deployment and Storage Tips 10.2...
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Page 4: Introduction
+20VDC, and it is always recommended to keep the supply voltage as high as possible to reduce the voltage drop in the tow cable. In most cases, power will be supplied to the SeaSPY2 from the Isolation Transceiver, which produces a clean, constant +48VDC to power the towfish. -
Page 5: Leak Detector
Even a small drop of water will activate the leak sensor. In the event of a leak warning, the SeaSPY2 should be retrieved immediately, as it is very likely that a leak has developed in the electronics housing. Water inside the electronics pod may damage the electronics module and Overhauser sensors. -
Page 6: Electronics Module
Electronics Module The SeaSPY2 electronics module is the core of the SeaSPY2 system, located within the towfish. It controls all of the sensors in the towfish, monitors their performance, and reports their data to the host acquisition device digitally over the tow connection. -
Page 7: Ac Power Supply
AC Power Supply The standard SeaSPY2 AC power supply can accept any AC power from 100 to 240VAC, at 50/60Hz, and is therefore capable of operating worldwide. It produces a constant 24VDC to power the Isolation Transceiver and SeaSPY2 system. -
Page 8: Deck Cable
1.1.16 BOB Software Marine Magnetics BOB is a Windows application that interfaces with your magnetometer, to allow full control over the towfish, data collection, survey planning and data visualization. For detailed information on using this program refer to the BOB Operation Manual. -
Page 9: Communication Via The Isolation Transceiver
The resettable fuse has a variable trip delay based on the amount of over-current. For example, if the transceiver is drawing 1200mA, you may find that the SeaSPY2 system will work well for a short while, and then trip the fuse for no apparent reason. -
Page 10: Transceiver Status Leds
If your fish does not seem to be responding to commands, send the # command at least twice to return to text mode. Turning SeaSPY2 off and on again will reset its communication mode to text. -
Page 11: Connecting The Equipment
SeaSPY2 Operation Manual v.6.5 3 Connecting the Equipment The SeaSPY2 magnetometer system is designed for quick and easy deployment and can be setup without the use of any tools. Refer to Figure 3-1on page 9 for a system connection diagram. - Page 12 SeaSPY2 Operation Manual v.6.5 • Figure 3-1 - SeaSPY2 connection diagram with a GPS-enable Isolation Transceiver • NOTE: The external GPS connection is optional, for situations where internal GPS is not exposed to satellite signal. STANDARD MAIN TOW CONNECTOR STANDARD MAIN TOW CONNECTOR...
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Page 13: Longitudinal Gradiometer
The SeaSPY2 Horizontal Gradiometer expansion kit converts two standard SeaSPY2 magnetometer towfish into a simultaneous horizontal gradiometer. The kit consists of a rigid frame structure, and a Y-split tow cable that carries the SeaSPY2 power and telemetry signals simultaneously to both towfish from a single tow cable. A Gradiometer Transceiver is required for communicating with the two towfish. -
Page 14: Horizontal Gradiometer Assembly Instructions
Step 1: Position the SeaSPY2s For proper frame alignment, lay the two SeaSPY2’s on the ground 150 cm apart with the tow connector notch facing up as shown in Figure 3-5. If the SeaSPY2’s are equipped with altimeters, the altimeters should be pointing downward when the connector notch points upward. - Page 15 In order to install the assembled frame onto the SeaSPY2, simply loosen the clamping fasteners (one on each collar) enough to allow the collar to slide onto the SeaSPY2. Take care not to lose the nut on the opposite side of the bolt as you loosen it! It is not necessary to remove the collar from the wing.
- Page 16 SeaSPY2 Operation Manual v.6.5 Figure 3-6 - Correct collar positions for optimal frame alignment Figure 3-7 - Each collar has a single bolt in the center that tightens it over the towfish. The other two bolts affix the collar to the frame, and should not be removed or loosened.
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Page 17: Spare Fasteners For The Frame Clamping Bolts
SeaSPY2 Operation Manual v.6.5 3.3.2 Spare fasteners for the frame clamping bolts: Each frame collar has a single titanium bolt used to clamp and tighten the collar over the towfish. You should never need replacement fasteners unless you loosen the clamping bolts so excessively as to let the nut fall off completely, without supporting the nut in any way. -
Page 18: Getting Started
The second line of data comes from the SeaSPY2 and reports the status of three important sensors as well as the voltage at the towfish end of the tow cable. The first column shows the amount of signal currently being produced by the Overhauser sensor. -
Page 19: Seaspy2 Commands
SeaSPY2 may gain or lose a maximum of 86.4ms in a day in the worst possible environment. SeaSPY2’s time is automatically set to the Real Time Clock of the transceiver each time it is connected. If a GPS connection to Transceiver is used, the Real Time Clock closely reflects the GPS clock. - Page 20 Start sampling at 4 Hz 0 (zero) Stop sampling. This command will terminate all cycling. The SeaSPY2 will complete a reading if one is in progress at the time of the command, and return to idle mode (awaiting further commands).
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Page 21: Gradiometer Mode Commands
SeaSPY2 Operation Manual v.6.5 G or g Display GPS time and position data. G: Enable g: Disable Use this to verify the GPS connection to the Transceiver. GPS NMEA data is used to synchronize the towfish date and time to the GPS, to ensure best match between the magnetometer readings and the GPS positions. -
Page 22: Isolation Transceiver Commands
These commands are valid whether there is a SeaSPY2 connected to the tow system or not. When the transceiver is powered up, it will attempt to verify if a SeaSPY2 is connected or not. This may take 3 to 4 seconds. If it detects a SeaSPY2, it will immediately set the SeaSPY2 time to the transceiver time. -
Page 23: Seaspy2 Data Format
Standard Format The Standard data format is the most commonly used, and is usually the default setting when a SeaSPY2 magnetometer is first shipped. The data string appears as follows: *YY.JJJ/HH:MM:SS.S F:FFFFFF.FFF S:SSS D:+DDD.Dm A:AAA.A L:L TTTms_Q:QQ !!!! CR LF The first character of each line is always * (ASCII code 42). -
Page 24: Warning Messages
SeaSPY2 Operation Manual v.6.5 Altitude reading following Leak indicator value following table 6-2: Letter designators in the data string 6.1.1 Warning Messages There are four different warning messages that can be displayed in the raw data log by the magnetometer. The warning messages may be summarized as follows (table 6-3). -
Page 25: Sis-1000 Compatible Format
SeaSPY2 Operation Manual v.6.5 The warning messages above are identical to those in the standard data format description, summarized in table 6-3. The one additional message is the leak message, the first of the group. If a leak is present, an ‘L’ message will be visible in this section. -
Page 26: Interfacing To A Side Scan Sonar
Digital Systems Interface to a digital side scan sonar system involves sending the digital data output from the SeaSPY2 to a data input port on the side scan unit. The side scan unit’s telemetry is then used to relay the magnetometer data to the surface, where it is then decoded from the side scan data stream. -
Page 27: Electrical Power
The interface tow point connects to an extension bar that is fastened to the side scan towfish at its center of gravity or at the rear of the platform for heavier units. The side scan tow cable connects to the top of the bar, and the SeaSPY2 interface clips directly to the bar with a clevis pin, through a universal link that allows full rotation in two dimensions. -
Page 28: Estimating Towing Depth
400.0 500.0 600.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 10.9kg 8.2kg 5.4kg 2.7kg Towfish Only figure 8-1: Towing depth of the SeaSPY2 with various weight configurations at a typical towing speed of 4 knots. Each cable weight weighs 2721g... - Page 29 SeaSPY2 Depth Curves - 90m Cable Speed (kts) 10.9kg 8.2kg 5.4kg 2.7kg Towfish Only figure 8-3: Towing depth of the SeaSPY2 at various towing speeds between 3 and 10 knots with 90 m of cable deployed and various cable weights...
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Page 30: Inside The Towfish
Standard Towfish SeaSPY2 has a modular construction that allows for quick and easy connection and disconnection of all components and parts. For normal use, the only connection you will have to think about is the main brass tow connector. Sometimes it becomes necessary to access the internal components of the towfish - for example if you suspect something has become damaged. - Page 31 SeaSPY2 Operation Manual v.6.5 Figure 10-2 - SeaSPY2 internal structure...
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Page 32: Maintenance
SeaSPY2 Operation Manual v.6.5 10 Maintenance A SeaSPY2 system is designed to withstand years of use in harsh marine environmental conditions. If some simple procedures are observed when deploying and storing the instrumentation, your SeaSPY2 system will continue to deliver high quality performance with no need for service at the Marine Magnetics facility. -
Page 33: O-Ring Sizes
SeaSPY2 Operation Manual v.6.5 10.2 O-ring sizes All O-rings used in the SeaSPY2 towfish are made from 70-durometer nitrile-rubber. All sizes are ASTM. O-rings will not need replacement unless the towfish itself is disassembled and the O-ring receives mechanical damage. -
Page 34: Troubleshooting
Open BOB and select the Connect Mag tab from the BOB Setup Assistant. Click the COM radio button and then select the COM port from the dropdown menu. The default baud rate for SeaSPY2 is 9600 bps. Press Connect to apply settings and reveal the Terminal window. -
Page 35: Seaspy2 Test Procedure
SeaSPY2 to a different location and try the test again, as there is too much interference in its current location. When the SeaSPY2 passes an environmental test it is in a location where it should be able to take good readings of the magnetic field. -
Page 36: Side Scan Integration Test Procedure
11.3 Side Scan Integration Test Procedure The following procedure can be used to test a SeaSPY2 with a Side Scan Integration unit. Before connecting the magnetometer to the side scan unit, you can use the test cable to verify that everything is operating correctly. -
Page 37: Gradiometer Test Procedure
Issue the ! command to query the serial number of the rear towfish. Start SeaSPY2 Test Procedure Perform steps 1 through 4 of the SeaSPY2 Test Procedure from section 11.2 on the rear towfish. Repeat with the front towfish Disconnect the rear towfish and connect instead the front towfish. Repeat steps 3 to 5. -
Page 38: Troubleshooting Specific Issues
• Water is present in the circuit Output Overload! • If the SeaSPY2 is determined to be the issue, then inspect the • Gradiometer towfish is being connector. used alone without a plug in Using an ohmmeter, verify that none of the cables or connectors are •... - Page 39 SeaSPY2 Operation Manual v.6.5 • Insufficient voltage • Check the voltage going to the towfish • Damaged cable Inspect all cables for damage • • Inspect the slip-ring connections Communication issues • Poor wiring or grounding through slip-ring • For gradiometers, make sure that the towfish serial...
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Page 40: Electrical Specifications
SeaSPY2 Operation Manual v.6.5 11.6 Electrical Specifications The following table shows the expected measurements under working conditions. If you are experiencing abnormal results then consult table 11-1 for troubleshooting tips. Location Parameter Typ. Units Transceiver Input Voltage @ 24V Input Current (no towfish) Output Voltage 47.5... -
Page 41: How To Reach Us
12 How to Reach Us If you encounter a problem using your SeaSPY2 system, you should contact the distributor that you received the product from. You can also contact Marine Magnetics directly at the address mentioned below. If you have access to the Internet, our World Wide Web page offers support in the form of documents and file utilities, as well as information on product updates. -
Page 42: Warranty
During the warranty period, replacement or repairs to items as described in 1 and 2 will be made free of charge. However, Marine Magnetics’ liability in such cases will not extend to transportation charges for any item to or from the buyer, or to any lost time or to other costs that the buyer may incur.
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