Using The Getac Tablet; Magnav App; Starting Your Gps Survey; Downloading Your Data - Geometrics MagEx Quick Start Manual

7.0 Using the Getac Tablet

Please note that this is a customized tablet to be very low magnetic signature, NOT an off-the-shelf Getac
tablet. Power On both the Getac tablet and the MagEx. Once the tablet is on, swipe down to access the
WiFi connection (default password: password) and connect to the MagEx. Once the tablet is connected to
the MagEx (blue LED becomes solid), return to the tablet's home screen. The Getac table acts as your data
logger.

8.0 MagNav App

You will see the MagNav Icon on your tablet's home screen. Double click and open the MagNav app.
Click the Mag Data tab, magnetometer readings will be displayed. Use two fingers to zoom in or out and
double tapping for auto-zoom. You can adjust the speaker volume by clicking the setting button.
Click a project name (or Create New Project) to open it and inside the Surveys page click Create New
Survey. In the pop-up window, set up your survey parameters and click OK. The Swath Radius (in unit of
meter) controls the displayed GPS route linewidth on the Navigation screen (section 9.0). The new survey
will appear on your Surveys page. Click the survey name to enter the survey data collection.
Click the Back button (little triangle) on the bottom of the portrait screen (or on the right if in landscape
mode) to navigate back.

9.0 Starting Your GPS Survey

To begin your survey, walk to your starting point. Go to the Navigation screen. Notice that the top and
bottom margins are red. This means that the unit is not in a recording mode. Click START, the margins
become green. The recording LED starts blinking as well.
Walk around with the MagEx, the route will be displayed. The linewidth of the displayed route is controlled
by the swath radius. After covering the survey site, click STOP.
Navigate to the Heat Map page and click REFRESH to display the heat map of the collected data.
10.0 Marked Survey
GPS navigations are the most convenient data acquisition modes. However, you may not have reliable GPS
signals at some survey sites, or the required positioning accuracy is beyond what is achievable using the
GPS. Marked navigation provides a solution in such cases. Marked Survey can only be set up from the
Survey Manager. Please go to Geometrics's website and navigate to the Support Forum for details. The
button on the handle is used for the Marked surveys.

11.0 Downloading Your Data

After completing your data collection, you will need to copy your data from the tablet to a USB drive.
To do this, first insert your flash drive (do NOT use the USB drive inside the battery compartment) into the
tablet.
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