Geophysical Survey Systems, Inc.
SIR® 4000
Manual
MN72-433 Rev F
108
How to Use Screen Capture:
1
Button sequence:
Press and hold the Down arrow for at
least 2 seconds, then release the Down arrow and press the
Up arrow once. Screen Capture works in either Collect or
Playback mode. You will hear an audio indication that the
SIR 4000 has saved the screen capture.
2
Screen Capture Image:
The SIR4000 screen capture feature will save the entirety of the
image that is currently on the screen. This means that for longer data files, you must scroll
left or right to capture images from an entire file. It is stored as the file name with a letter
designator. For example, an image from FILE___036.DZT will be saved as
FILE___036A.PNG. Multiple .PNG files can be captured from a single .DZT file.
3
Transfer the File:
Transfer the data file (DZT) file to your computer following the steps in
the next section. The .PNG file(s) will transfer automatically along with the associated .DZT.
There is no way to transfer the image without transferring the data.
6.7: Setup for Single Line 3D Collection in Digital 2D
Follow these instructions if you want to build a 3D area out of multiple individual survey profiles.
You will save each profile as a different file and create the 3D project in RADAN’s 3D Module. This
method does not use the Quick3D mode on the SIR 4000. For instructions on how to use the control unit
to aid in 3D data collection in Digital 3D mode see Chapter 7.
Step 1 – Distance Mode Setup
To begin, follow the guide for 2D Distance Mode (see above). The following setup options are also
recommended for single line 3D collection.
Position:
Set Position to Manual under the Radar Menu. This will ensure that you do not accidentally
auto-position over different ground surface conditions while collecting, which makes it impossible to
compare depth or time between multiple profiles.
Gain:
After you have set the gains so that you are not clipping, set Gain under the Process Menu to
Manual. This will prevent auto-gain over a different area while collecting, which would produce a
‘checkerboard’ pattern. Gain differences will mask features and create edge-effects.
Select Datapath:
For single-line 3D Collection,
GSSIs recommend creating separate datapaths when
collecting a bi-directional 3D grid. Create new folders for files collected in the X-direction and for files in
the Y-direction. It is good practice to make a separate folder for unidirectional grid lines.
AutoSave:
Set AutoSave to Off. This will pause the system between profiles allowing you to reposition
the antenna to start the next profile.
Step 2 – Grid Setup
Arrange your survey grid so that you can cross your targets with at least three profiles; this will allow you
to tell the difference between a point target and a linear target. For example, if you are looking for graves
2 meters in length your survey profiles should be spaced no more than 0.5 m apart. Try to orient your
survey grid so that you cross the graves perpendicular to their long axis in order to have the greatest
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