Product Manual
6
3. Ni-Cad Recharge: When equipped with Ni-Cad
rechargeable batteries, the recharger jack is plugged
into this socket. If the red light is lit, proper contact
has been made. (NOT available in Europe)
4. Accessory Output: The Ground Plate Assemblies
Coupling
Clamp or Ground Rod Assembly connects into this
jack for a Conductive Trace or Direct Induced Trace.
TRANSMITER
COMPONENT DESCRIPTIONS
1. Ground Rod/Harness Assembly: Provides a
“ground” for greatest efciency in CONDUCTIVE
TRACING. For hard ground, the accessory Ground-
Rod /Harness Assembly is recommended.
2. 3-Piece handle: For use in INDUCTIVE LOCATING.
3. Handle Carrying Strap: Allows you to lower handle
closer to the ground for greater depth penetration
and sensitivity in locating. The same strap is used for
carrying the receiver.
4. Handle Carrying Case: Protects 3 piece handle
and makes a neater bundle.
5. Carrying Case: Sturdy protection for your TW-
6 and storage for accessories, such as coupling
clamp, headphones, mini probe, and ground plate
assembly.
6. Headphones: Stereotype headphones are
available for the TW-6. They are switch selectable
from monaural to stereo and may not work with the
TW-6 when switched to mono. You may prefer to use
the stereo phones because volume is adjustable
separately to each ear. The VCO sound is shrill and
without a volume control on the mono headphones,
the sound may be uncomfortable.
7. Ni-Cad Battery Recharge Kit: Replaces the standard
eight (8) packs of carbon zinc batteries that come
with the unit and includes the charger for charging
both transmitter and receiver simultaneously. (NOT
available in Europe).
19
circle. You need to be close enough to the transmitter for a strong
signal so that the sound will quit or “null” as you back away and
then resume again as you move backwards. You measure from
the middle of the null area back to the centerline of the pipe or
cable and that is its depth.
TRACING PROCEDURE
COUPLING CLAMP
Use the Coupling Clamp to Inductively energize and trace without
a metal-to-metal contact. Tracing distance will be less than when
using the ground rod assembly, so there is no advantage to using
the coupling clamp on pipes, unless a non-conductive wrapping
prevents bare metal contact.
Begin by plugging the Clamp into ACCESSORY OUTPUT on the
transmitter. Place Clamp around cable or other conductor (make
sure jaws are completely closed). Turn receiver and transmitter ON
and precede using tracing techniques as described earlier. The
conductor must make a closed loop, or circuit, or be grounded
for best tracing results.
It is useful to carry a “jumper” with two clips and a rod to be
driven into the ground to be sure of the ground. Two Coupling
Clamps can be used together to perform manhole-to-manhole
and drop-to-junction types of work. Plug the second Clamp into
receiver ACCESSORY INPUT jack. Then, test different strands with
the receiver Clamp to nd your signal.