ABEM Terrameter SAS 1000 / SAS 4000
- 116 -
118
119
120-
121-~
122-~
123-
.
.
.
”Time” is the elapsed time in seconds between the creation of the original data record
and the acquisition of the data point.
”Electrode positions” can be either in the
Index
-format or the
XYZ
-format described
above.
”Measured values” depends on acquisition mode as follows (and in the order
indicated):
1.
SP: {V E}
{Voltage (V) Error (%)}.
2.
Resistivity: {I V E}
{Current (mA) Voltage (V) Apparent resistivity (
m) Error (%)}.
3.
IP (single time window): {I V
p
R
a
T
on/off
T
D
T C
a
E}
{Current (mA) Voltage (V) Apparent resistivity (
m) Time On/Off (sec) Delay (sec)
Integration time (sec) Apparent chargeability (msec) Error (ms)}.
4.
IP (multiple time windows): {I V
p
R
a
T
on/off
T
D
T
1
C
a1
T
2
C
a2
T
3
C
a3
. . . T
n
C
an
E}
{Current (mA) Voltage (V) Apparent resistivity (
m) Time On/Off (sec) Delay (sec)
Integration time #1 (sec) Apparent chargeability #1 (msec) Integration time #2 (sec)
Apparent chargeability #2 (msec) Integration time #3 (sec) Apparent chargeability #3
(msec) . . . Integration time #N (sec) Apparent chargeability #N (msec) Error (ms)}.
NOTE!
There is one exception to the above rule. The electrode layouts with codes -1
and 0 (
Untitled
and
Resistance
) force the co-ordinate type to
XYZ
and replace
apparent resistivity with resistance.
16.5
TOPOGRAPHY
The number of lines containing topography data is given in the header (line 5) and the first
line containing topography data is line N
H
+N
D
+1.
There are two different ways of presenting the topography information.
General Topography Information
The data are given in a whitespace separated XYZ format. The first co-ordinate should be the
location of the first electrode. The rest of the co-ordinates, however, do not necessarily have
to be bound to the electrode locations. The co-ordinates need not be sorted.
An example:
-40
0
5.5
–20
0
6.5
0
0
6.0
50
0
4.8
150
0
3.0
