Geometrics MagArrow, Руководство пользователя

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GPS
The GPS inside the MagArrow has two functions. The first function is to provide the location at which
measurements are made. The GPS will provide roughly 1.5 meter positional accuracy under good
conditions. The second function utilizes the 1PPS to synchronize the sampling rate to ensure 1000
samples are recorded per second.
After turning the system on, it will take approximately 2-3 minutes to get a good satellite fix and for the
PPS to begin synchronizing the measurement. The 1PPS pulse is generated by the GPS, and does require
signals from several satellites before it can be generated.
If you select Start Logging before there is a GPS fix, magnetic data will NOT be saved to file.
Controlling the MagArrow via WiFi
The MagArrow creates 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 device, turn on WiFi, and connect to the MagArrow. It may take about 15 seconds for the
tablet or other device to find the access point. Only one device can be connected to the MagArrow’s
wireless access point at a time. The LEDs will Double Flash – Once per second when the device is
successfully connected to the WiFi and GPS Synch is Locked. See LED Status section above for more
information.
Open a browser on the logging device and type the following IP address into the web browser bar:
magarrow.net. This will take you to the Home Page of the MagArrow’s wireless control software. The
sections below describe the features on each of the pages in the MagArrow web-based control program.
In order, there is the Home Page, Status Page, Data Page and Help.