When you need to perform detailed troubleshooting of copper and fiber connections, you can use specialized equipment, such as:
- Time Domain Reflectometer (TDR): for copper connections
- Optical Time Domain Reflectometer (OTDR): for optical fiber connections
Some of the functionalities offered by such devices include:
- Signal quality
- Estimating cable lengths
- Splice locations
- Cable impedance information
- Signal loss
The TDR (see Figure 22.10 below) works by sending an electrical signal (pulse) down the wire (copper) and listening for its reflection. Reflections of the . . .
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