BARTINGTON INSTRUMENTS
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When all data has been sent, a checksum is sent to validate the data. If the checksums do not
match then an error has occurred and the operator will be prompted to repeat the download
operation or proceed with the data as received.
If the data is received without error, the screen will change to the Save screen to allow the data
to be saved as individual Grid files.
19.3. The Save Screen
The screen will show both the total number of Grids and the next Grid to be saved. The header
information for the first Grid, giving the survey parameters, will also be shown. The options given
are:
Save Screen Option
Subsequent steps
Save current Grid
A separate
SAVE AS
window will appear and allow the
operator to select a folder and file name. When the data
has been saved, the information for the next Grid will be
presented and the process can be repeated.
Save all grids
A ‘Choose a Filename Prefix’ window will appear. Select a
folder and then enter a name to be used for all the files.
The data will then be saved with filenames comprising the
chosen prefix and the Grid number: for example, if the prefix
mygrid
is selected, the Grids will be saved in files called
mygrid1.dat, mygrid2.dat etc.
Skip current Grid
The next grid is skipped unsaved.
Abandon all data
All data are left unsaved.
Before selecting
SAVE
, the format, number of files and data delimiter must be set as required.
The data for each Grid can be saved as two files, one for the header information and the other
for data, or as a composite with the header and data in one file. The files can be formatted as a
spreadsheet with tab or comma delimiters, as a Z stream with <CR><LF> delimiters, or as XYZ
files with tab or comma delimiters (see
File Formats
).
All data is in ASCII format. X and Y represent the position in the Grid and Z represents the
amplitude of the gradient recorded at that point.
Select either one or two files, the data delimiter as a tab or comma, and the file format required.
Note:
Use the tab delimiter in countries where a comma is used for the decimal separator.
The single file with spreadsheet format and tab delimiter is recommended for initial use.
This gives an ASCII file that can subsequently be transferred directly into Excel or various
mapping programs.
