Geometrics Memory-Mag G-856AX, Operation Manual

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Geometrics, Inc
.
G-856AX Operation Manual
34
download procedure is used for single sensor, dual sensor (gradiometer) or base
station configurations.
2. Define the grid and interpolate all data. MagMap2000 allows the user to define the
spacing between discrete readings and between survey lines. Then the program
assigns a position to each reading creating a uniform grid. Positions are editable
individually or by line.
3. Search the data for spikes or erroneous readings and remove them using the options
provided under the Filter menu item.
4. If desired, flag anomalies in the profile data that may be associated with targets of
interest (archeological, environmental, utility, ordnance, geological, etc.). These
flags will appear on the position map thus showing there location on the survey
grid.
5. If desired create maps of the data as 2-D or 3-D plots with multiple color or shaded
relief contours. These features are accessed by right-clicking on the map or
survey line and selecting the desired output from the menu that appears. The
Flags discussed in item 4 above are also reproduced on the 2-D and 3-D map data
plots.
6. Survey results can be exported as a file in ASCII (Text) format for processing or
plotting using other analysis programs such as Geometrics MagPick program,
Geosoft or Surfer.
Manual Transcription
If no computer is available for data retrieval it may be necessary to simply archive the
data with pencil and paper. To manually retrieve data, find the first reading in the survey
(often 000) that was listed in your field notes or by iteration (see section The G-856AX
can also be configured to store survey measurements automatically. In this mode you
will only need to press
READ
in order for the console to read and store the measurement.
To enable automatic storage press:
AUTO , STORE, ENTER
If you wish to revert to the standard manual store mode press:
AUTO , STORE, CLEAR
7 - Recalling measurements from memory). After the first reading is found and data
written down, depress ENTER to increment the magnetometer as many times as needed
to see and hand record all the data. If you are retrieving data from a base station, you will
be recording the data on the basis of measurement time rather than station number.