Geometrics MagArrow, User Manual

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Magnetometers
Mode: Running/Starting - This displays the mode that magnetometer is in currently.
Starting means the magnetometer sensors are warming up. It is very likely that you will not see
the Mode as Starting since it only takes one minute or two for the sensors to warm up. Running
means that the sensors are currently running and operating normally.
Field: 45574.2968 - This is the average magnetic field reading. This can also be Invalid.
The average is calculated by taking the same time-stamped reading from each sensor and
dividing by two to get the average. Swipe down on the screen to refresh the page. The Field
value should update, indicating that the system is recording changes in the magnetic field. The
Field can also say Invalid, which means the magnetometer is near a very high magnetic field or
in a dead zone.
Instrument Time: 2018-10-20 4-17-22 - This shows UTC date and time from the GPS, respectively.
GPS
Quality: Unavailable/OK/Low Precision - This displays the current status of the GPS. This can either be
OK, or Low Precision.
Unavailable means the GPS is not outputting position information. OK means that the
Horizontal Dilution of Precision is 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 fixed and synchronizing the timing of the measurement.
Locked means that the measurement timing is phase locked to the PPS. Available/Not Locked
means that the GPS data is coming in, but the measurement is not phase locked to the PPS. Not
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/Low/Download Only/Critical - This shows the current status of the battery.
OK is the reported state of the battery when it has more than 30% charge remaining. Low is
reported when the battery has less than 30% charge remaining. Download Only means that the
battery charge is too low to run the sensors, but still has enough charge to download data files.
The WiFi will continue to function for a limited time in this condition. It is highly recommended
to change the battery when the percentage drops to 30%. Critical is the reported state when the
system is near shut off. It is likely that Critical will never been seen on the screen as the system
may have already shut off.
Percentage: 83 - This shows the approximate percentage of battery charge remaining.