What does A in the Cat7a network cable represent?
The "A" in Cat7a represents enhanced, including shielding for each pair of twisted pair cables and overall shielding (S/FTP). Cat7a, also known as Enhanced Class F, is the latest recognized standard network cable defined by IEC/ISO in 2010.
The additional sheath can achieve a higher bandwidth of up to 1000MHz. Each pair of wires is shielded with foil to prevent electromagnetic interference (EMI), which is crucial in environments with electrical noise such as data centers. The overall woven shielding that wraps all four pairs of wires provides additional EMI protection. After termination, the Cat7A cable will include a drain wire to ground the power.
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