Peak Mode Locating
• Peak and Pin Point Peak modes have less error rates than
the null locating mode in most circumstances.
• The peak mode location indication should be veried by
the null to ensure locating accuracy.
With the Locator in a vertical position. Move left to right across
the path. When the Locator is directly above the cable or pipe,
rotate the Locator for a maximum signal.
As you move the Locator away
from the cable path, the meter
reading (and audio frequency
response) will drop o.
The Left/Right arrows operate
o of the Null reading. By
utilizing the Left/Right arrows
while in Peak mode the user can
simultaneously locate in both
modes thus quickly identi-
fying the match or discrepancy
between the Peak and the Null
reading.
If you rotate the receiver while
over the cable, a sharp NULL will
identify the cable’s direction which
is aligned with the at side of the
receiver.
Trace the path by walking away
from the Transmitter at a moderate
pace. Move the Receiver 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 Transmitter. Press and release the
Gain buttons as needed to compensate for changes in level
(higher or lower). One of the following may occur:
• a junction where the signal divides and goes several
directions.
• a break in the cable or shield.
• a change in the depth of the cable or pipe.
• an insulated pipe tting.
• a slack loop of cable.
If you can no longer trace the path, even with the Gain set to
maximum, connect the Transmitter 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 Receiver Peak and Null indica-
tions to behave dierently 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 eld.
Null Mode Locating
Move the Locator left to right across the cable path. When
the Receiver is directly above the cable or pipe, a Null (lowest
meter reading and lowest audio tone) will occur. When moving
the Receiver 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 Receiver is moved beyond the
Peak, the meter reading will begin to fade.
Trace the path by walking away from the Transmitter at a
moderate pace. Move the Locator 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.
Left Right Auto Gain Directional Locating
The Left/Right arrows operate o of the Null reading and will have the same
error rate as the Null locating mode. By utilizing the Left/Right arrows with
the absolute signal strength reading the user can simultaneously locate with
both Peak and Null modes, thus quickly identifying the match or discrepancy
between the Peak and the Null reading.
In this mode the unit will display directional arrows to the conductor. The audio
indicator will provide a solid tone on one side of the conductor and a pulsed
tone on the opposite side of the conductor. When the unit is centered in the
electromagnetic eld the tone will null and the depth will briey display at the
top of the LCD. This mode is gain independent.
Null shows
line direction
Buried utility
end views
Buried utility
end view
Buried utility
end view
Maximum
receiver signal
Signal over cable
PG 5 MyTana ST LINEFINDER TRANSMITTER User Manual
