www.ssilocators.com
14
SERIES
If you can no longer trace the path, even with the
G
aIn
set to maximum, connect the
t
ransmItter
to
the far end of the path and trace back to the point where you lost the signal.
Mark the straight sections of the path every few feet. Mark sharp curves, loops, and cable bundles
every few inches. Sharp changes in the path cause the
r
eceIver
Peak and Null indications to behave
differently than when tracing a straight path. Practice on the path that you know has turns and laterals
in it. This will help you to recognize the conditions within the field.
Trace the path by walking away from the
t
ransmItter
at a moderate pace. Move the
r
eceIver
to the
left and right while walking, following the Peak indications.
As you trace the path, the Peak meter reading may slowly fade as you move away from the
t
ransmItter
.
Press and release the
G
aIn
buttons as needed to compensate for changes in level (higher
or lower). One of the following may occur:
a
)
a
JunctIon
where
the
sIGnal
dIvIdes
and
Goes
several
dIrectIons
.
B
)
a
BreaK
In
the
caBle
or
shIeld
.
c
)
a
chanGe
In
the
dePth
of
the
caBle
or
PIPe
.
d
)
an
Insulated
PIPe
fIttInG
.
e
)
a
slacK
looP
of
caBle
.
Move the
r
eceIver
left to right across the cable path. When the
r
eceIver
is directly above the cable or pipe,
a Null (lowest meter reading and lowest audio tone) will occur. When moving the
r
eceIver
to left or right
of the Null point, the meter reading will rise to a maximum point (Peak). The audio tone will also be at its
highest pitch. When the
r
eceIver
is moved beyond the Peak, the meter reading will begin to fade.
Trace the path by walking away from the
t
ransmItter
at a moderate pace. Move the
r
eceIver
to the
left and right when walking, following the Null indications.
It is expected that in areas of distortion and interference the Null locating mode will have a greater
error rate than the Peak locating mode.
Null Mode
Buried cable
Buried cable
Signal over cable
Peak Mode
(End view)
Receiver Max
(End view)
Receiver Min
Signal over cable
n
ull
m
ode
l
oCating