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Fig. 22: Setup menu –Patch Setup
Patch Setup is to configure each channel on each GEM3D receiver in the active survey section
1.
Patch Name: This is the name of the survey and is used to
name the acquired data files
. NOTE: In order for the
GeoCSAMT or MTPro processing software to create a
continuous line when the stations are rolled to a new
position the Patch Name must be change for the new
location. If the Patch Name is the same, the processing
software will average them together.
2.
User Defined North: The difference between true north and
user defined north. Requires both Hx and Hy
measurement.
3.
Array type: Allows for the selection of the type of survey to
be done. “Rotated Scalar CSAMT” allows the magnetic field
to be rotated perpendicular to the Ex field.
4.
Rolling Azimuth: For a line this is the line azimuth. “Roll
Backward” and “Roll Forward” rolls the receiver array setup
forward or backward along the profile line.
5.
Transmitter Layout: Tx1 indicates one transmitter dipole is
used (scalar). Tx2 indicates two transmitter dipoles are
used (tensor).
a.
Tx1 easting, Tx1 northing, Tx1 elevation, Tx2
easting, Tx2 northing, Tx2 elevation: These fields
are the user the defined orientation and elevation
of the transmitter dipoles. Defined by the North
reference. If “User Defined North” is set to “0” the
azimuth is true compass azimuth.
b.
Tx1 dipole length, Tx2 dipole length: If two dipole
are set up for a single transmitter or at two
separate transmitters the dipole lengths may be
different.
c.
Tx1 azimuth, Tx2 azimuth define compass bearing
of two transmitter dipoles.
6.
Segment information indicates the number of GEM3D
receiver boxes in the line and the line information. The
segment represents a single line of GEM3D receivers. The
current version of the GeodeEM3D supports only one
segment. For a 3-D survey set the single segment is laid out
