Chauvin Arnoux C.A 6681 Notice De Fonctionnement page 57

3.2.8 TRACING AN UNDERGROUND CIRCUIT
Preconditions:
The circuit measured must not be live.
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Connect the transmitter as shown in Fig. 17;
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The transmitter must be correctly earthed;
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Select the automatic mode of the receiver;
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Use the power of the signal displayed to find and trace the circuit.
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Remarks:
The distance between the earth wire and the circuit to be located must be as
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long as possible. If this distance is too short, the signals and the circuit
cannot be located precisely.
The depth of detection is strongly influenced by the earthing conditions.
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Select suitable receive sensitivities to locate the circuit precisely.
If you move the receiver slowly along the circuit to be located, you will see
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that the screen changes somewhat. The most powerful signals represent the
precise position of the circuit.
The longer the distance between the signals transmitted (by the transmitter)
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and the receiver, the lower the power of the signals received and the lower
the depth of detection.
C.A 6681 Cable locater
English
Fig.17
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