Standard for near end crosstalk of category 6A cable (CAT 6A)

A standard for near end crosstalk of a category 6A cable (CAT 6A), comprising:

• a registered jack 45 (RJ45);
• a clamp;
• a first attenuator;
• and
• a second attenuator;
• wherein the RJ45 comprises at least one first signal twisted pair and a second signal twisted pair;
• the at least one first signal twisted pair is configured to transmit a first source signal and a second source signal;
• and the second signal twisted pair is configured to transmit a third source signal and a fourth source signal;
• the clamp is connected to the RJ45;
• the clamp comprises at least one first signal pair connector and a second signal pair connector;
• the at least one first signal pair connector is electrically connected to the at least one first signal twisted pair;
• the second signal pair connector is electrically connected to the second signal twisted pair;
• the clamp further comprises a first differential amplification circuit and a second differential amplification circuit;
• the first differential amplification circuit is configured to perform differential operation on the first source signal and the second source signal, so as to convert an impedance of the at least one first signal twisted pair;
• and the second differential amplification circuit is configured to perform differential operation on the third source signal and the fourth source signal, so as to convert an impedance of the second signal twisted pair;
• the first attenuator is electrically connected to the at least one first signal pair connector;
• and
• the second attenuator is electrically connected to the second signal pair connector;
• and the second attenuator and the first attenuator are configured to measure near end crosstalk between the at least one first signal twisted pair and the second signal twisted pair.