abem WalkTEM 2, Abridged User Manual

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ABEM WALKTEM 2 ABRIGDED USER MANUAL
5. CENTRE LOOP LAYOUT (TL-10k HP6, 100x100m Transmitter Loop)
A. Similar layout to using the TL-1k6:
-
pull out the TL-10k transmitter loop first,
this loop is split across two reels;
-
leave the loose end of the loop by the
instrument and walk around with the
cable drums;
-
next lay out the RC-5, if used (not necessary
if primary focus is deeper responses);
-
lay out the RC-200;
-
RC-5 / RC-200 are now connected to the
instrument via 62m extension leads
(total lead-in distance for each
coil is now 95m);
-
the TL-10k is connected to
the TX unit via the 3m
lead-in cable;
-
see Section 3 “Damping
Resistor Decisions” for
instructions on manually choosing a damping
resistor.
B. Powering the TX:
- a 100m transmitter loop would normally be powered with a minimum of 24V (i.e. 2 batteries).
6. CENTRE LOOP LAYOUT (TL-40k HP6, 200x200m Transmitter Loop)
A. Start by laying out transmitter Loop:
-
each side is one complete reel of cable;
-
leave the loose end of the loop by the
instrument and walk around with the
cable drums;
-
no RC-5 because the 200m loop has a
long switch-off time, so shallow responses
are undetectable;
-
the RC-200 is now connected to
the instrument via
two 62m
extension leads;
-
the TL-40k is connected
to the instrument via
the 3m lead-in cable
again;
-
see Section 3 “Damping
Resistor Decisions”
for
instructions on manually
choosing a
damping resistor.
B. Powering the TX:
- a 200m transmitter loop should be powered with a minimum of 24V (i.e. 2 batteries).