abem Terrameter SAS 1000, Инструкция по эксплуатации

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ABEM Terrameter SAS 1000 / SAS 4000
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to the right of the receiving dipole) this will be a negative number.
For the Wenner array it is identical to the spacing multiplier index.
For the Schlumberger array it is the number of electrode spacings between the
outer and inner electrodes.
Dx: The spacing multiplier index applies to gradient, dipole-dipole, and pole-dipole
arrays and defines the electrode spacing. For example, in dipole-dipole arrays it is
the dipole size (AB and MN) measured in number of electrode spacings. It is also
used, if needed, for potential (SP) measurements to define the receiving electrode
spacing.
For Wenner and Schlumberger arrays it is the number of electrode spacings
between the two center electrodes.
XYZ

:

0|1|2|3

When this type is defined, the X, Y, Z co-ordinates of the A, B, M, and N electrodes are used
in
the following order:
A
x
, A
y
, A
z
, B
x
, B
y
, B
z
, M
x
, M
y
, M
z
, N
x
, N
y
, N
z
.
XYZ co-ordinates are normally given in meters. If XYZ:0 is defined, however, the co-
ordinates are given in station numbers. In the other cases 1 denotes that only X co-ordinates
are listed, 2 that X and Y co-ordinates are listed and 3 that X, Y, and Z co-ordinates are listed.
16.4 DATA
There are two parameters that affect the data rows; the acquisition mode determines the
format of the measured values and co-ordinate type determines the format of the electrode
positions. In general, the data comes in the form:
”Data no.” ”Time” ”Electrode positions” ”Measured values”.
”Data no.” is just an ordering number of the data. It is possible to attach one or more
symbols to the end of the number to represent the status of the data (see the table
below for more information).
Symbol Description
- The data point was skipped and does not contain any information.
? There might have been a drop in the transmitted current. Please check the data.
! A general error occurred during data acquisition. Data may be invalid.
^ Overflow during data acquisition.
~
The data point was skipped due to current transmission failure.
An example:
.
.
.
114
115?
116?
117
The status symbols and their meaning