GSSI SIR 4000, Руководство пользователя

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Geophysical Survey Systems, Inc. SIR® 4000
Manual
MN72-433 Rev F 49
for evidence of clipping. If your data becomes clipped, leave the antenna in place and re-initialize
by pressing the Init control button. This will decrease the gains so that the data will not clip.
o
If you plan to collect multiple profiles and wish to compare them, it is usually best to set the
gain to Manual Gain Mode once you find appropriate gain settings (you can see targets and
the signal does not clip).
o
If you are performing real-time locating, leaving the Gain Mode set to Auto will allow you to
use Init when your signal quality changes between profiles.
• Edit Gain Curve:
If portions of the signal are under- or over-gained after using Auto Gain Mode,
try increasing or decreasing the number of gain points. Gain points are evenly distributed along
the scan trace; adjusting the number of points can change where amplification occurs.
o
Select Edit Gain Curve.
o
Add or erase points to modify the gain curve.
o
Save and Exit to return to the Collect Setup screen.
Output Menu
1
Scale and Units:
Verify that you are using the appropriate vertical scale, vertical units, and
horizontal units.
2
Colormap, Color Stretch, and Color Slide:
Check that you are using your preferred color scale
settings.
System Menu
1
AutoSave:
With AutoSave turned on you’ll automatically save every profile. Select this option to
save all of the files you collect, rather than be selective.
•
If performing real-time locating AutoSave may be beneficial as it will decrease the number of
selections required to clear your screen.
•
If collecting individual profiles to build into a 3D grid using software we recommend turning
AutoSave Off. As you finish collecting one line this pauses data collection while you get in
position to start the next line.
2
Save Setup:
Once you’ve made all of the modifications to the settings listed above, it’s a good idea
to save your setup. This way you can recall it later if you have to restart the system or if you know
you’ll use these settings on a regular basis.