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Geometrics MagArrow, User Manual

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Summary of Contents for MagArrow

Page 1: ...MagArrow UAS Deployable Magnetometer User Guide Rev B COPYRIGHT May 2019 GEOMETRICS INC 2190 Fortune Drive San Jose CA 95131 USA Phone 408 954 0522 Fax 408 954 0902 geometrics com...

Page 2: ...MagArrow via WiFi 14 Home Page 15 Status Page 17 Data Page 20 Help Page 24 Survey Manager Software Converting Data Files 24 Data Format 26 Tips on Running a MagArrow Survey 28 Flight Planning and Prep...

Page 3: ...3 Congratulations on your purchase...

Page 4: ...iniature magnetometer comprises of two high performance cesium sensors attached to one sensor driver module The two sensors are used together in order to eliminate the dead zone and reduce heading err...

Page 5: ...Your MagArrow shipped in a rugged black case The case has latches that require you to first push the button on the latch before raising the latch and opening the lid To close the latches just push dow...

Page 6: ...tery charger and discharger is recommended https hobbyking com en_us accuell s60 ac charger us plug html This is a balanced charger that charges one lithium battery pack at a time Each of the three ba...

Page 7: ...roper Placement of Battery Pack 2 As shown in the figure directly above the proper placement of the battery inside the battery compartment is with the end of the battery where the wires come out point...

Page 8: ...ne white cell voltage monitoring connector Plug the lithium battery connector into one of the yellow connectors Note The second yellow connector is used when hot swapping batteries This will allow you...

Page 9: ...ackwards 5 Slide the battery into the compartment and carefully tuck the wires in Hot Swapping the Battery A new battery pack can be plugged in while the depleted battery is still connected This will...

Page 10: ...will automatically shut down when the battery voltage gets too low for proper operation about 30 Powering On Off There is a black Power button located inside the battery compartment The button has a s...

Page 11: ...that does not fix the error then cycle the power LED Status When the system is powered on the two bright LEDs on the underside of the MagArrow will flash The pattern of flashing will depend on the sy...

Page 12: ...ower button This SD card is U3 speed class In case of a WiFi failure the SD card can be removed and read using an SD card reader However under normal circumstances the user should not need to remove t...

Page 13: ...oise into the magnetic field measurements The USB drive should not be removed unless absolutely necessary If the USB drive needs to be removed first unplug and remove the battery then remove the flash...

Page 14: ...es a wireless access point with unique name like Blue Sky or Green Pond This is an unsecured access point which means it does not require a password to connect Go to the settings of your logging devic...

Page 15: ...nformation about the status of the magnetometer the GPS and the battery From top to bottom here is what each item on the Home Page represents Home Recording Yes No This indicates if the system is curr...

Page 16: ...s less than 1 5 Low Precision means that the Horizontal Dilution of Precision is greater than 1 5 GPS Synch to Magnetometer Locked Available Not Locked Not Found This indicates that the PPS pulse is f...

Page 17: ...17 Status Page...

Page 18: ...or two for the sensors to warm up Running means that the sensors are currently running and operating normally The chart in the middle of the page provides sensor specific information Sensor Mode Start...

Page 19: ...Found means that there is no GPS fix Rarely will Not Locked and Not Found be displayed here If these are displayed try moving to an area with open sky Battery Status OK This shows the current status...

Page 20: ...a This page displays data that is on the SD card Deleting data from this page also deletes the data from the SD card When you first get to the page it may be fairly empty and look similar to the scree...

Page 21: ...acquisition Recording No Initially this will say No which means data is not being saved to storage To begin recording and saving data for the active Acquisition click START COLLECTING DATA It should...

Page 22: ...ll display beneath the search bar that will say Mark placed in the data log successfully To stop recording data click STOP COLLECTING DATA Select CREATE NEW beneath Acquisitions in order to create a n...

Page 23: ...w will pop up at the bottom of the page that will show that the file magdata has been downloaded To delete an acquisition click the DELETE button next to the acquisition you would like to delete To ch...

Page 24: ...ch as Notepad To convert the binary file to a text file csv use Survey Manager The Survey Manager program can be found on the Geometrics USB stick that shipped with the MagArrow Run the application on...

Page 25: ...tion that was just imported The Acquisition Info will appear as in the screen capture below Select Export data You will be prompted to name and save the new csv file After saving a pop up will appear...

Page 26: ...icates if Mag is considered a valid reading Compass X When included this is the strength of the magnetic field component at right angles to the mag arrow s body in nT A positive value means that the e...

Page 27: ...GPS module SatellitesUsed This is the number of satellites used as reported by the GPS module Altitude This is the altitude as reported by the GPS module HeightOverEllipsoid This is the height over e...

Page 28: ...ear surface targets For near surface targets the lower the sensor flies the better the data and more defined the anomalies Geologic mapping surveys can have much longer lines wider line spacing and ca...

Page 29: ...g the survey results Troubleshooting Magnetometer The magnetometer data reported as Invalid 1 The magnetometer may take 3 minutes to warm up 2 If MagArrow is near a magnetic object move it away from t...

Page 30: ...owing the status of the GPS satellites ftp tycho usno navy mil pub gps gpstd txt LEDs The large LEDs are flashing multiple times 5 Rapid Flashes with a 1 second gap between them Indicates that the sys...

Page 31: ...d the system is booting properly As soon as the power button is pressed a red light which sits between the Power Button and the USB will come on solid for about 3 seconds Then a green light located ne...

Page 32: ...SD card U3 speed class Not field accessible Contact sales for higher capacities Data Download over WiFi 2 4GHz using user supplied browser capable device 10 minutes of data requires 1 minute to downl...

Page 33: ...row and plug in into a windows machine 2 Unzip the file containing the firmware and run the installer 3 Select the target directory as the USB stick 4 Plug the USB stick back into the MagArrow and pow...

Page 34: ...you will see the following acronyms used to describe the type of position accuracy in question HDOP horizontal dilution of precision VDOP vertical dilution of precision PDOP position 3D dilution of p...

Page 35: ...ics governing magnetometers Heater The small heater inside the sensor that heats the absorption cell creating the atomic vapor necessary for taking measurements This length of time is the primary reas...

Page 36: ...APPENDIX D Envelope Center of Gravity and other Drawings...

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