Image reference from RadioDetection

Here's how a typical Cable Avoidance Tool works:

1. Electromagnetic Detection: The CAT emits a signal, usually an electromagnetic field or radio frequency, into the ground. This signal can penetrate the soil and detect the presence of metallic conductors, such as power cables or metallic pipes.

2. Receiver Unit: The operator uses a handheld receiver unit, which picks up the signals emitted by the CAT. The receiver unit typically has a screen or indicators that provide visual and audible feedback to the operator.

3. Signal Strength Indication: As the operator moves the receiver over the ground, it detects variations in the signal strength. When the receiver is directly above an underground cable or pipe, the signal strength will increase, indicating its presence.

4. Visual and Audible Feedback: The receiver unit displays the signal strength on its screen or uses a series of lights or sound indicators to help the operator determine the location and direction of the buried utility. The operator can follow the visual or audible cues to trace the route of the cable or pipe.

5. Additional Features: Some advanced Cable Avoidance Tools may have additional features like depth estimation, different frequency modes for specific utilities, and GPS integration for accurate mapping of the detected utilities.