C-LOGIC 3900 Instruction Manual page 21

Cable locator
Caution!
1. Full contact with the ground must be assured.
2. The transition resistance of a line break must be greater than 100kOhm.
3. When tracing the line break in multi-conductor cables, pay attention that
all cables remaining in the insulated cable or conductor must be
grounded in accordance with regulations. This is required to avoid cross
coupling of the applied signals (by a capacitive effect of the source
terminals). The tracing depth for the shielded cables and connectors is
different, since the individual wires of the conductors in the shielded
cables are twisted together.
Recommendations
1. The ground connected to the emitter can be an auxiliary ground, an outlet
ground, or a pipe that is properly grounded.
2. During tracing along the line, the position where the signal received by the
receiver drops sharply is the location of the break.
3. Adjust the power level of the emitter to suit different detection radious.
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