User's Manual

Geophysical Survey Systems, Inc. Model 5101 Antenna
www.geophysical.com System Settings and User Notes
Manual MN31-124 Rev - 2
Gain Check
The surface pulse should be about 2/3 the width of the screen. If it is
greater, reduce the Gains manually. If the signal appears too small you
can manually increase the Gains, but the first gain point should never
exceed 10dB.
At the right is a screen shot from the SIR-3000. Initial pulse at the top of
the window does not “run off” the right or left edge of the window. The
red line superimposed on the window is the gain curve. Please see your
control unit documentation for more information on this feature.
Minicart
Your Model 5101 is designed to fit into the Model 614 or Model 615
minicart. Using the antenna with the minicart allows you to take
advantage of distance-based data collection which is possible with a
survey wheel. A survey wheel (rear-axle of the cart) tracks the distance
traveled and allows consistent scan spacing. The minicart is available as
a separate purchase and is also compatible with the Model 5100/5100B
high frequency antenna sold with the StructureScan systems. Please
contact your GSSI sales representative for details.
Note: The red switch on the underside of the minicart’s handle operates
as a ‘deadman’ switch. The switch must be fully depressed to activate the transmitter. If you
release the red switch during data collection, the system will automatically turn off the
transmitter within approximately 10 seconds unless you depress the switch again. This feature
makes it legal to scan walls and ceiling within the United States. Operation of the 5101 on a wall
or ceiling without a ‘deadman’ switch enabled cart or handle constitutes illegal operation with
the USA as per FCC regulations.
Survey minicart