ABEM Terrameter SAS 4000 / SAS 1000
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N:
Number of integration intervals. Valid range: 1-10.
If no parameter list is defined the current parameter values are returned in a text string with
the same format.
If the multiplication factor (
mult
) equals one, each IP interval’s integration time will be equal
to t
0
/f
s
. If the multiplication factor is equal to two, the length of each successive IP interval
will be doubled, i.e. if the first interval is 100 ms the second will be 200 ms the third 400 ms
and so on. The total integration time, however, cannot exceed 8 seconds.
19.2.11
Set Mode
OPM
mode
Sets the measurement mode. The valid parameter values are listed in Table 2. If no parameter
is given, the current mode is returned. The mode selected is active until another mode is
selected or the program is terminated.
Mode Description
0
Disables measurements
1
SP
2
Resistivity
3
IP
19.2.12
Set Resistivity
STR
I
mA
, I
mode
, f
s
, t
D
, t
Acq
Sets the parameters specific for resistivity measurements.
I
mA
:
Output current (mA). Valid range: 1-1000.
I
mode
:
Output current mode. Valid values: 0 = automatic ranging, 1 = fixed current.
f
s
:
Sampling frequency (Hz). It should be set in accordance with power line
frequency that can exist in the area where measurements are being done. Valid
values: 50, 60.
t
D
:
The delay time between current switch on and start of sampling. Valid values
0.0-4.0 s (in steps of 0.1 s)
t
Acq
:
The time used for sampling (integration). Valid values 0.1-4.0 s (in steps of 0.1
s).
If no parameter list is defined the current parameter values are returned in a text string with
the same format.
The total time for one single measurement pulse will be equal to 4 * (t
D
+ t
Acq
) seconds.
Table 3
Valid measurement mode parameters.
