For certifying the performance of Cat 5e cables, what is the maximum frequency used during testing?

The maximum frequency used during the testing of Cat 5e cables is indeed 100 MHz. This parameter is significant because it reflects the design specifications and performance capabilities of the Cat 5e standard.

Cat 5e, which stands for Category 5 enhanced, was developed to support data networks with higher performance, particularly for Ethernet. Testing at 100 MHz confirms that the cabling can handle data rates up to 1 Gbps (Gigabit Ethernet) over distances of up to 100 meters, ensuring that the cables meet the necessary standards for efficient data transmission. This frequency is essential for evaluating various parameters such as attenuation, near-end crosstalk (NEXT), return loss, and other critical factors impacting network performance.

The other frequency options exceed the testing limits set by the Cat 5e standard, which specifically includes performance testing up to 100 MHz. Therefore, while other categories like Cat 6 and Cat 6a may be tested at higher frequencies, the standard for Cat 5e remains firmly at 100 MHz to ensure compliance with its specifications and intended applications.