ABEM Terrameter SAS 1000 / SAS 4000
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All CVES cables shall be rolled out in the direction of the profile, i.e. with the takeout
numbers increasing in the same direction as the coordinate numbers increase. The procedure
is: Secure the free cable end at the point of the lower coordinate number and walk the reel
towards points of higher coordinate numbers. It is a good rule to have the profiles always
running south-to-north or west-to-east (instead of north-to-south or east-to-west), to avoid
confusion when the results are to be presented (unless an existing co-ordinate system demands
else). Take-out # 21 of one shall overlap take-out # 1 of the next cable at the cable joints and
in the layout centre
9
. Overlapping takeouts connect to the same electrode.
Link together the inner and outer electrode
cables (Cable 3 and Cable 4 only at this
stage) with a cable joint (white cylindrical
connecting device). Take care to connect it
in the right direction: the groove on the
cable joints should point towards the
instrument in the layout centre
9
.
Connect electrodes to the odd-numbered take-outs on all active electrode cables
9
. The even-
numbered take-outs can be left out for the time being. If the ground is soft and moist the
electrodes can just be pushed into the ground and connected, however hammering and wetting
is often needed. Check the contact surfaces between electrode take-outs, cable jumpers and
electrodes for dirt and oxide, which can ruin the data quality, and clean if needed. Link
together inner and outer electrode cables using the white cable joints.
Connect the Electrode Selector at the centre of the cable spread, i.e. between cable #2 and
cable #3.
9
Note: For cable systems with 16 take-out cables the take-out must NOT overlap at the cable
ends but be separated with the same spacing as all other take-outs in the. Furthermore, all
electrodes should be connected from the start. Note also that the cable joints have two grooves
instead of one for this type of cable system.
Figure 10. Cable arrangement at the first measurement station in a roll-along survey, where
the first cable is excluded.
Instrument
Outer end
