Geometrics 770-00124-01 User Manual

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User Guide

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MFAM Ethernet Adapter

P/N 770-00124-01

Rev. A2

March 2025

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Summary of Contents for Geometrics 770-00124-01

Page 2: Table Of Contents
Table of Contents TABLE OF CONTENTS ....................... 2 1.0 INTRODUCTION: ........................4 What Magnetometers Do ..........................4 What is the MFAM? ............................4 THE MFAM Ethernet Adapter ........................... 5 2.0 ETHERNET ADAPT ER BOARD OVERVIEW ............... 5 Input and Output Connections ........................5 Micro-SD Card ..............................
Page 3 6.0 ETHERNET DATA FORMAT AND SAVED FILE FORMAT ..........24 APPENDIX A: CONNECTING THE ADAPTER VIA ETHERNET ..........27 APPENDIX B: ETHERNET ADAPTER BOARD DIMENSION ..........29 APPENDIX C: ETHERNET DATA TRANSFER FORMAT ............30 Disclaimer ......................................31 P/N 770-00124-01 Rev. A2...
Page 4: Introduction
Magnetometers are used in a variety of applications and can be fitted to airborne, marine, and land-based surveys. Geometrics is a leader in magnetometer development and is known worldwide for our total field magnetometers. Our magnetic sensors measure the total magnetic field, or total field, without directional information.
Page 5: The Mfam Ethernet Adapter
Error! Reference source not found.. THE MFAM Ethernet Adapter The Geometrics MFAM Ethernet Adapter is a versatile, easy-to-use and compact interface board that allows system developers to quickly design custom applications using the MFAM magnetometer sensor. The board converts data input and output from the MFAM driver into Ethernet protocol. With a standard RJ45 connector, the adapter allows easy integration of the MFAM with other systems.
Page 6: Micro-Sd Card
TIVA code, remove the SD card and plug it into a PC. Copy the btb.bin file (rename it to btb.bin) provided by Geometrics to the SD card root directory. Eject it from the PC and plug it back into the Ethernet adapter board.
Page 7: Data Logging And Displaying Program
Restart instrument to finish update.". Power cycle to finish the software update. Data Logging and Displaying Program Geometrics provides a LabVIEW based program, MagViewMFAM, to gather and display the Ethernet data from the adapter board. More information can be found in section 4 and 5.
Page 8 The optical axis of the sensor is shown in Figure 3 above. Note: Traditional cesium magnetometers have two dead zones – polar and an equatorial dead zone – however, one of the advantages of the MFAM is that it has just the polar dead zone. P/N 770-00124-01 Rev. A2...
Page 9 Figure 5 Illustrating Magnetic Field Vector/Inclination Angle at the Earth’s Surface At the magnetic equator, the earth’s magnetic vector is horizontal to the earth’s surface. At the magnetic poles, the field is vertical. Between these extremes in the northern hemisphere, the earth’s P/N 770-00124-01 Rev. A2...
Page 10 In Low Heading Error mode, a simpler sensor orientation can also achieve heading error cancellation, as shown in Figure 7 Low Heading Error mode is NOT available for Regular MFAMs. More information can be found in MFAM Module User Guide. P/N 770-00124-01 Rev. A2...
Page 11 Figure 6 - Orienting Sensors for Heading Error Cancellation in both Low Noise Mode and Low Heading Error Mode. Figure 7 - Orienting Sensors for Heading Error Cancellation in Low Heading Error Mode P/N 770-00124-01 Rev. A2...
Page 12: Magviewmfam Example Software
Create a folder on your hard drive and name that folder “MagViewMFAM” (Example: “C:\MagViewMFAM\”) and copy the file MagViewMFAM_V1_3_2_Standard.exe into this folder (also located on supplied USB stick) Create a shortcut to this file (right click on file, select “Create Shortcut”) Drag the shortcut to the desktop P/N 770-00124-01 Rev. A2...
Page 13: Operation
Connect the adapter to the computer using the Ethernet cable. If your computer does not have an Ethernet port (or if you need the existing one for other uses) you can use a USB to Ethernet adapter. Setup the Computer Ethernet port to a fixed IP address as outlined in P/N 770-00124-01 Rev. A2...
Page 14: Appendix A: Connecting The Adapter Via Ethernet
Appendix A: CONNECTING THE ADAPTER VIA ETHERNET. Power up the MFAM (using the provided AC adaptor is the easiest method) Double click the Shortcut on the computer desktop Make sure the IP and port (1000) match the adapter. Click the Run (little arrow on the top left corner) The program will run, and the "Connected to MFAM"...
Page 15: Commands
Because this command can cause major changes in the firmware it is password protected. If this command is ever needed contact the factory for a password to invoke this command. Passwords expire two days after being issued. P/N 770-00124-01 Rev. A2...
Page 16: Printing Graphs
A pull-down menu allows the file size / time for each block to be chosen. At the transition from closing one file and opening the next no data will be lost. P/N 770-00124-01 Rev. A2...
Page 17: Ascii Format
The GPS string (if selected for saving to disk) will always be the last item saved in the comma delimited sample line. This data comes out once per second. For faster sample rates the GPS String will be P/N 770-00124-01 Rev. A2...
Page 18: Configuration Save/Retrieve
3 of the Control Panel. Then the next time MagViewMFAM is started up, it will reload all of the configuration settings as they were when the configuration was saved automatically. If you change the configuration and want to go back to the last saved configuration, click on the “Load Configuration” button. P/N 770-00124-01 Rev. A2...
Page 19: Filters
Filters: On Page 2 of the Control Panel is a Filter Setup Box. There are three filters that can be set up to filter the magnetometer data: High Pass Filter: Select from: 0.1 Hertz 0.2 Hertz 0.5 Hertz 1 Hertz 2 Hertz 5 Hertz 10 Hertz...
Page 20: Stacked Magnetometer Data (Control Panel
Page 4 of the Control Panel: Below are two screen shots showing page 4 of the Control Panel. A simulated heartbeat has been made by differentiating the trigger signal and feeding a small current into a small coil. The amplitude P/N 770-00124-01 Rev. A2...
Page 21 The first screen shot shows a full 1 second of stacked data (500 mS before the trigger and 500 mS after the trigger, and second one shows the stacked data window zoomed in to one edge of the simulated heartbeat.- P/N 770-00124-01 Rev. A2...
Page 22: The Retrigger Mask Time
This sets a time in milliseconds that another trigger will not be allowed. This prevents noise from double triggering a stack event. I set it to 50 mS. I chose this value arbitrarily since the trigger wave form is free of noise. P/N 770-00124-01 Rev. A2...
Page 23: Notes
60 hertz or not. You can put in a variety of low pass filter as well. Remember though, that these filters are only for the data in the stacked display. They do not affect the data displayed in the mag P/N 770-00124-01 Rev. A2...
Page 24: Ethernet Data Format And Saved File Format
(taken at a 1 mS sample interval), and an 84 byte place holder for GPS information. Each data sample is further broken down (referring to Appendix C: ETHERNET DATA TRANSFER FORMAT) into Fiducial Counts, System and Magnetometer Status, Magnetometer Readings, Auxiliary Channels, and ADC channels. P/N 770-00124-01 Rev. A2...
Page 25 When the MFAM module is first powered on, the unit sends out a different data set format. In place of the magnetometer and auxiliary channels is internal diagnostic information documenting the start-up process. There are 5 main stages during the startup process. The Diagnostic Stage is documented as Mag Status bits 15-13. P/N 770-00124-01 Rev. A2...
Page 26 The MagViewMFAM program can be used to save data during startup. In fact, if the start-up process does not complete, providing Geometrics with the saved start-up data can help us diagnose the problem and provide a solution quickly. P/N 770-00124-01 Rev. A2...
Page 27: Appendix A: Connecting The Adapter Via Ethernet
Appendix A: CONNECTING THE ADAPTER VIA ETHERNET To connect to the adapter via Ethernet, you will need to manually set up your network card IP address IP Address: 192.168.0.10 Subnet Mask: 255.255.255.0 Default Gateway: 192.168.0.1 This is for the default adapter IP. If you change the IP to 192.168.2.2, then the network card IP needs to be in the same subnet, for example IP = 192.168.2.10 or subnet mask = 255.255.0.0.
Page 28 P/N 770-00124-01 Rev. A2...
Page 29: Appendix B: Ethernet Adapter Board Dimension
Appendix B: Ethernet Adapter Board dimension Figure 10 Ethernet Adapter Board dimensions in inch.
Page 30: Appendix C: Ethernet Data Transfer Format
Appendix C: Ethernet data transfer Format P/N 770-00124-01 Rev. A2...
Page 31: Disclaimer
All information provided herein is for information purposes only and does not constitute a legal contract between Geometrics and any person or entity unless otherwise specified. Information contained in this document is subject to change without prior notice and will indeed be updated periodically. Although every reasonable effort is made to present current and accurate information, Geometrics makes no guarantees of any kind.