abem Terrameter LS - 12.10 Cable Description Files in ADR-Format

ABEM Terrameter LS
101
<Move> 2 <X> -1 </X> </Move>
<Move> 3 <X> 0.2 </X> </Move>
<Move> 4 <X> -0.2 </X> </Move>
</Select>
The text immediately after the <Select> tag will be displayed on the instrument
Screen, and the <Move> tags define the electrode coordinates used for calculating the
electrode positions in the data file. The entire statement above can be written on one
line if preferred.
The electrodes are connected via cables to C1, C2, P1 and P2 connectors on the
contact panel. This is defined in the following statement:
<Sequence>
<Measure>
<Tx> 1 2 </Tx>
<Rx> 3 4 </Rx>
</Measure>
</Sequence>
12.10 Cable Description Files in ADR-format
The address files (cable description files - extension .ADR) are the equivalent of the
spread files in the system used by older versions of the ABEM Lund Imaging System.
It contains information about the physical configuration of the measuring channels in
relation to connections and cables presently used, and includes for instance number of
electrode cables, number electrode take-outs per section, internal and external
addresses of electrode channels, etc. All parameters are integers. Since one way of
creating a spread file for Terrameter LS is to convert from and ADR-file the format is
given as reference here.
The following format is used in the files:
n
sec
n
each
{ number of electrode cables, total number of take-outs per
cable }
n
skip
n
x-move
[n
y-move
] { active electrode skip factor, lengths for x-move, lengths for y-
move }
n
tot
[n
x
] { total no of active take-outs, no of take-outs in x-direction }
1 adr
1
cable
1
-pos
1
{ number, internal address and physical position of 1st take-out }
2 adr
2
cable
2
-pos
2
{ number, internal address and physical position of 2nd take-out }
...
...
ntot adr
ntot
cable
ntot
-pos
ntot
{ number, internal address and physical position of last
take-out }
For line oriented cable arrangements with roll-along in the direction of the cable the
parameters n
y-move
and n
x
are not specified, but only for area cover and 3D cable
arrangements. In these cases the parameter n
x-move
is set to zero. Excluded electrode
positions can be entered into the address file by assigning the address 0 (zero). These
electrode positions will then be omitted from electrode contact test and measuring.
Example address files can be found in “Section 12.13 - Standard Spread Files”.