Geometrics MagArrow Скачать руководство пользователя страница 30

GPS 

GPS Synch to Magnetometer indicates NOT FOUND or GPS status indicates Unavailable 

1.

 

Move the MagArrow to a location with a clear view of the sky.* 

2.

 

If there are nearby radio transmitters, move away from them. 

3.

 

Check that GPS satellite reception is normal on some other device such as a cell phone. 

*The GPS satellite constellation comprises satellites in low earth orbit that provide the ranging signals 
and navigation data messages to the GPS receiver in the MagArrow. Users with a clear view of the sky 
will have a minimum of four GPS satellites in view. The satellites broadcast ranging signals and 
navigation data allowing the GPS receiver to measure their pseudoranges in order to estimate the 
MagArrow's position, in a passive, listen-only mode. 

The exact number of satellites operating at any particular time varies depending on the number of 
satellite outages and operational spares in orbit. The following link will obtain a simple text document 
maintained by the US Navy showing 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 system has a problem and needs user attention. These problems may include: 

1.

 

The battery has less than 30% of its charge remaining. 

2.

 

The SD card is not properly inserted. 

3.

 

The SD card is corrupted, has failed, or is slow. The maximum storage write time is slow 
(>1000ms.)  

4.

 

The SD card is full. 

5.

 

The magnetometer sensors are not producing good quality data or have failed. 

Pressing the power button causes no LED flash 

1.

 

The most likely cause of this is a fully discharged battery. 

Pressing the power button causes only a brief flash of the LEDs 

1.

 

Check that the cell voltage monitoring connector is correctly mated. 

2.

 

Replace the battery with one that is fully charged. 

The large LEDs flash twice with a pause between pairs of flashes, but your device can't connect. 

The two flashes indicate that the MagArrow is connected to some device. 

1.

 

Check the other phones and tablets to find the one it is connected to. 

2.

 

Disable that devices WiFi either in the settings or by setting it to "airplane mode". 

Содержание MagArrow

Страница 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...

Страница 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...

Страница 3: ...3 Congratulations on your purchase...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 17: ...17 Status Page...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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