Shielding (EMI): Why Your Audio Hums
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Visualizing: Shielding (EMI): Why Your Audio Hums
Cables act like tiny antennas. They can pick up 'noise' from power lines, microwaves, and Wi-Fi routers. This is Electromagnetic Interference (EMI).
Types of Shielding
- Foil (F): A thin layer of aluminum. Good for high-frequency noise.
- Braid (B): A mesh of copper wires. Good for low-frequency structural integrity.
UTP vs STP
In networking, UTP (Unshielded Twisted Pair) is standard. In noisy environments (near power cables), you need STP (Shielded Twisted Pair) to prevent data packet loss.
Technical References
- IEEE 802.3: Noise and Interference Mitigation.
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