3
Procedure to select the tracer range
1. Unit should be on, if not, turn it on by momentarily pressing the On/Off button.
2. Press and hold On/Off button for approximately 3 seconds until a beeping and flashing following the
pattern below indicates that the desired sensitivity level is set:
a) Low sensitivity: a single (1) flash and beep.
b) Medium sensitivity: double (2) flash and beep.
c) High sensitivity: triple (3) flash and beep.
The sensibility level is selected in the following sequence:
Low
Medium High
Sensitivity adjustment sequence
When the unit is turned off, the tracer will retain the last selected sensitivity setting.
HOW TO GET THE MOST OF YOUR FAULT FINDER
• Working with open circuits
On detection of an open circuit the transmitter injects a special radio signal into the circuit, which can
be picked up by the tracer probe.
When tracing an open circuit, keep in mind that RF (radio frequency) signals injected in the faulty wire
being traced, will be easily absorbed by any conductor nearby. (i.e. other wires, metal frames, etc.)
The effect of this absorption may vary from a reduction in the tracer’s range, to a total shielding of the
signal with no detection being possible at all.
In order to avoid confusing a shielded portion of the faulty wire with the actual fault on it, the circuit
should be checked on all possible sections to confirm that no signal is picked up after the suspected
faulty section.
• Working with short circuits (and tracing circuits)
When the transmitter detects a short circuit (or closed circuit), it injects current pulses in the wires,
which generate magnetic fields. Unlike radio signals, magnetic fields are not absorbed by nearby
conductors and therefore can be picked up by the tracer probe in a wider range of situations.
Some circuit characteristics that may affect the tracing of a circuit:
1. Circuits in which the live and ground (return) wire run parallel and close to each other in the same circuit.
The two magnetic fields of opposite and equal magnitude tend to cancel each other out, thereby
reducing the tracer range.
2. Wires enclosed or tightly lining the metal frame or body of the vehicle, (i.e. door frames, etc.), have the
same effects as having the live and ground wires running in parallel in the same circuit since, the metal
frame or vehicle body will be acting as a ground wire. Another unfavorable factor may be due to the
channeling effects steel parts have on magnetic fields. These two cases, individually or combined, will
reduce and sometimes impede the tracing of the wire sections affected.
