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• Sensitivity mode selection – general guidelines:
• Start out at maximum sensitivity ( ) until the receiver finds the circuit under test. If the
receiver is too sensitive, then reduce the sensitivity using the button until the
receiver’s display does not peg at “99” continuously.
• Use mode for tracing: (a) in closed circuits while using the outlet plug adapter, (b)
in open circuits, (c) underground, (d) and anywhere else more signal detection is needed.
• Use mode to reduce the level of sensitivity if the highest sensitivity range has signal
saturation (display is pegging at “99” continuously).
• Use mode for tracing and when previous mode has signal saturation of “99.”
• Use mode for (a) identifying circuit breakers and fuses, (b) pinpointing individual wires
from a bundle, (c) and when previous mode has signal saturation.
Receiver Orientation
• The indication of received signal intensity depends on how the receiver is pointed in relation to the
source of the signal. If the receiver is pointed away from the signal source then there will be a low
value indicated on the receiver. If the receiver is rotated about the axis of main antenna sensitivity, the
signal varies in strength as the antenna is pointed at and then away from the circuit being traced.
• Therefore, rotate the receiver over the wire being traced until the highest reading is displayed. If
during tracing, the signal is reduced, the wire may have changed directions (e.g. from horizontal
travel across a wall to vertical travel up a wall). Rotate the receiver to find the strongest signal again.
• Use the back of the receiver to sweep the wall or floor and determine the circuit’s general
location. Use the nose of the receiver to pinpoint its location.
• Steel conduit attenuates (weakens) the signal radiating from the wires inside the conduit. Aluminum
conduit significantly attenuates the signal. So, the receiver should be set at a higher sensitivity and may
need to be placed closer to the circuit to obtain a stronger signal detection.
Test Lead Kit TL-948
A complete test lead kit is supplied for use with the transmitter:
1. Outlet Plug Adapter for plugging into
standard 120VAC outlets.
2. Two Blade Prongs for inserting into a
separate outlet with a remote neutral
conductor as a return path.
3. Ground Prong for inserting into a separate
outlet with remote ground conductor as a
return path.
4. Two Alligator Clips for connecting directly to
bare wires and grounding points.
5. Two 3’ Lead Adapters for use with above
clips and prongs to connect to bare wires
and grounding points.
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