Table of Contents
Related Manuals for Marine Magnetics Synapse
Summary of Contents for Marine Magnetics Synapse
- Page 1 Synapse and Synapse Horizontal Gradiometer Quick Start Guide Rev. 2025-01 Marine Magnetics Corp Tel: +1 905 479-9727 Fax: 905 479-9484 135 SPY Court Email: support@marinemagnetics.com Markham, ON URL: www.marinemagnetics.com L3R 5H6 Canada...
-
Page 2: Table Of Contents
Layback distance estimation for optimal magnetometer positions............................ 7 Pressure Sensor .......................................... 8 Altimeter - Optional ........................................8 Operating the Synapse system using BOB Software ................................9 Single Synapse configuration in BOB ..................................11 2-Node Synapse array configuration in BOB ................................12 Assigning the Master node ....................................... -
Page 3: Introduction
RS-232 or USB interface. For side-scan integrations, the isolation transceiver is embedded into the integration cable. A Synapse array system may include 2 or more (up to 30) nodes interconnected via a single CAN bus daisy chain cable, and can be installed on frames of various geometries. -
Page 4: Synapse Horizontal Transverse Gradiometer
Synapse Horizontal Transverse Gradiometer The Synapse horizontal transverse gradiometer consists of two Synapse marine magnetometers that can be used individually or as a gradiometer pair when mounted on a lightweight and streamlined aluminum frame. For stability, the frame is equipped with vertical fins holding float and keel pods. -
Page 5: Connection Diagram
An isolation transceiver is required to operate the Synapse magnetometer system. In the case of the side-scan integration, the isolation transceiver electronics are included in the side-scan Integration Cable. The Synapse system combines data from all connected magnetometer nodes and sends it to the isolation transceiver via the tow connection. -
Page 6: Rs-232 Interface
Output Power (2 mag + 2 x ALT) RS232 Baud Rate 2400* 115200 115200 Table 2-1 - Electrical specifications of the Synapse side-scan Integration cable *Although supported, baud rates below 9600 are not recommended for use with Synapse magnetometers, and can lead to communication delays and errors. -
Page 7: Gradiometer Frame Assembly
Synapse Horizontal Gradiometer - Quick Start Guide Gradiometer Frame Assembly The horizontal transverse gradiometer frame consists of three main components that need to be assembled prior to deployment: Horizontal ‘wing’ with towfish collar clamps at both ends Vertical fin with an air-filled float pod ... -
Page 8: Layback Distance Estimation For Optimal Magnetometer Positions
0.8m. This combined magnetometer offset from the side-scan sonar tow connection to the tail end of the magnetometer towfish (sensor location) amounts to 10.4m when the Y-split adapter cable is used with the gradiometer frame. When a single Synapse towfish is used without the Y-split adapter cable, the total magnetometer offset is 6.1m. -
Page 9: Pressure Sensor
The Synapse altimeter has a range of 1m to 90m, and a resolution of 0.1m. An altitude value expressed in meters is added to every magnetic field reading and is formatted as follows ‘A:015.05m’ in the serial terminal.Note that the altitude data field does not appear if an altimeter is not installed in the towfish, or if the altimeter is disabled as a peripheral in the Synapse configuration menu. -
Page 10: Operating The Synapse System Using Bob Software
Operating the Synapse system using BOB Software Marine Magnetics BOB is the magnetometer interface software that provides data logging, survey planning and data corrections for all Marine Magnetics products. Additional processing and data visualization features can also be activated using the BOB Analytic Module (BAM) license. Free BOB software is available from the following URL: https://bob.marinemagnetics.com/... - Page 11 2-node horizontal transverse gradiometer frame and a 5-node horizontal array. All Synapse systems also require that a single Master node be assigned. This node will collate all the data from the array and communicate with the isolation transceiver.
-
Page 12: Single Synapse Configuration In Bob
Synapse Horizontal Gradiometer - Quick Start Guide Single Synapse configuration in BOB To configure a Synapse system with a single node, select the single node option from the drop-down menu and ensure the node serial number is configured as Master node. -
Page 13: 2-Node Synapse Array Configuration In Bob
Synapse Horizontal Gradiometer - Quick Start Guide 2-Node Synapse array configuration in BOB To configure a Synapse system with two nodes, select the Horizontal Gradiometer option from the drop-down menu. Only one node can be configured as the Master node in an array. -
Page 14: Assigning The Master Node
Enabling and disabling the altimeter The integrated altimeter transducer in all Synapse units can be disabled if necessary to prevent interference with other acoustic sensors present in the survey system. In arrays with multiple altimeters located closely (e.g., 1.5m Horizontal Gradiometer frame), only one altimeter must be activated to... -
Page 15: Finalizing The Configuration In Bob
Synapse Horizontal Gradiometer - Quick Start Guide Finalizing the configuration in BOB The final step 4 in BOB Setup Assistant summarizes the survey parameters and COM port connections, and offers options for time synchronization source for the magnetometer towfish. For best results, the magnetometer should be synced to the GPS/UTC time. This requires a GPS connection. -
Page 16: Magnetometer Data Display In Bob
Total Field, Analytic Signal, and Partial Gradient maps. Please refer to the BOB User Manual for further details on all features and functions. Figure 6-1 - Typical BOB user interface when reviewing existing Synapse Horizontal Gradiometer data and interpolated maps generated in BAM. -
Page 17: Real-Time And Review Panes Of The Profile Plot
Synapse Horizontal Gradiometer - Quick Start Guide Real-time and Review panes of the Profile Plot The Profile Plot window in BOB contains a vertical divider that can be used to split the view into the Review pane (left) and the Real-Time Readings pane (right). -
Page 18: Calibrating The Depth Sensor Zero Level
The Attitude Indicator display, accessed through the Mag menu, can monitor the Synapse magnetometer or gradiometer's real-time orientation. Figure 6-4 - The Attitude Indicator displays Pitch, Roll and Altitude readings from the active node whenever the Synapse magnetometer is actively sampling. -
Page 19: Saving And Exporting Survey Data
Synapse Horizontal Gradiometer - Quick Start Guide Saving and exporting survey data All data collected by BOB are always stored in the BOB survey database whenever sampling is enabled. The database is stored internally and cannot be directly accessed, but it can be backed up to a file for archiving, or exported in CSV format for processing in 3 party software. -
Page 20: Survey Export Log Format - Description Of All Data Columns And Units
Synapse Horizontal Gradiometer - Quick Start Guide 6.4.1 Survey Export Log format – Description of all data columns and units (*) represents n/a Column Value Description Reading_Date 23-Aug-2023 Date of the sample reading, magnetometer clock Reading_Time 17:59:00.001 Time of the sample reading, magnetometer clock... -
Page 21: Configuring The Isolation Transceiver
The transceiver communicates with the PC using a configurable baud rate (default: 115200 ), and with the connected towfish using a separate baud rate (default: 31200 for Synapse). Both of these can be modified through the transceiver configuration menu. It is not necessary to have the towfish or tow cable connected to check the transceiver operation and configuration settings. -
Page 22: Synapse Data Format
Synapse Data Format Standard Format – Single magnetometer The Standard data format is the most commonly used and is usually the default setting when a Synapse magnetometer is first shipped. The data string appears as follows: ~HHMMSS.sss SSSL FFFFF.FFF DDDD.D AAA.AA ASG AV.V AW +PP.PP +RRR.RR YYY.YY*CS CR LF... -
Page 23: Compact Format - Single Magnetometer
(no signal strength data in compact format) Sensor Lock Status. (G during normal sampling) Rubidium Synapse: A,B,C or D: Starting up, E: heat stabilizing, F: Scanning for signal, G: Locked. Overhauser Synapse: TBD Magnetic field in nT, with a precision of 1pT. -
Page 24: Compressed (Base64) Format - Single Magnetometer
Gradiometer and Array Data – Standard format When more than one Synapse node is connected, their respective data strings simply get concatenated together by the Master node before being forwarded to the isolation transceiver, with only a single time stamp column at the start. -
Page 25: Troubleshooting
(integrated into the side-scan integration cable), check the baud rate and the power supply. The Synapse system requires one of the array nodes (units) to be assigned as the master node. If no master node is assigned, it will appear as though the towfish is not connected If more than one master node is assigned, the data seen in the RS-232 terminal will contain unreadable text and non-ASCII characters. -
Page 26: Examples Of Data With Indications Of Various Potential Issues
Examples of data with indications of various potential issues: Synapse data string will contain dashes as placeholders for all sensor measurements that are missing or not working properly, making it easy to tell how many data fields one should expect. However, if a specific sensor is not installed or is disabled (in the configuration menu), there will be no dashes for it.
Need help?
Do you have a question about the Synapse and is the answer not in the manual?
Questions and answers