Overview
This lecture introduces the use of a toner and probe (also known as a tone generator and probe) as tools for identifying and tracing network cables in a structured cabling system.
Purpose of a Toner and Probe
- A toner and probe set is used to locate and identify specific cables in a bundle or at patch panels.
- The toner sends an electrical signal or tone through a cable, which the probe can detect by sound.
How to Use a Toner and Probe
- Connect the toner (tone generator) to one end of the cable you want to trace.
- Use the probe on the cable bundle elsewhere to detect the tone emitting from the correct cable.
- The probe produces an audible tone only when near the cable carrying the signal from the toner.
Common Applications
- Useful for identifying unlabelled or misplaced cables in networking closets or patch panels.
- Helps network technicians avoid disconnecting the wrong cable during troubleshooting or moves/adds/changes.
Safety and Limitations
- Toner and probe should not be used on powered circuits, as it may damage the equipment.
- The probe only detects the tone for the specific cable, not for electrical cables or other types of wires.
Key Terms & Definitions
- Toner (Tone Generator) — A device that sends a distinct signal through a wire or cable to aid in identification.
- Probe — A device that detects and amplifies the tone signal in a wire so it can be heard by the technician.
- Patch Panel — A hardware assembly containing ports used to connect and manage network cables.
Action Items / Next Steps
- Practice using a toner and probe on a test cable run to develop familiarity with the devices.
- Review safety guidelines to prevent use on live or powered circuits.