How to Test and Verify the Performance of Shielded LAN Cables
Introduction
In today’s fast-paced digital world, reliable and high-performance network connectivity is paramount. Within structured cabling systems, shielded LAN cables play a crucial role in ensuring the integrity of data transmissions and mitigating electromagnetic interference (EMI) and radio frequency interference (RFI). To ensure optimal performance, it is essential to thoroughly test and verify the performance of shielded LAN cables upon installation and periodically thereafter.
Test Methods
1. Fluke Networks LinkWare Live
Fluke Networks LinkWare Live is a comprehensive cloud-based cable certification software that offers a wide range of testing capabilities, including for shielded LAN cables. It provides real-time test results, documentation, and project management tools, making it an efficient solution for testing and verifying the performance of shielded LAN cables.
2. Ideal Networks LAN Cable Tester
Ideal Networks LAN Cable Testers are handheld devices specifically designed for testing the performance of shielded LAN cables. They provide fast and accurate results, measuring parameters such as wire map, continuity, and length. These testers are ideal for quick and convenient on-site testing and troubleshooting.
Performance Parameters
1. Continuity and Wire Map
Continuity testing verifies that each wire in the cable is properly connected and free from breaks or shorts. Wire mapping checks the correct wiring configuration and ensures that the cable is wired according to the specified standard (e.g., TIA-568-A or TIA-568-B).
2. Length
Length testing measures the physical length of the cable and helps identify any excessive lengths that may affect signal performance or cause impedance mismatches.
3. Delay Skew
Delay skew measures the time difference between the arrival of signals at different pairs within the cable. Excessive delay skew can cause data errors and performance degradation, especially in high-speed applications.
4. Return Loss
Return loss measures the amount of signal power that is reflected back towards the source due to impedance mismatches in the cable. High return loss indicates poor signal quality and can lead to connectivity issues.
Verification Methods
1. Fluke Networks OptiFiber Pro
Fluke Networks OptiFiber Pro is a fiber optic test set that can also be used to verify the performance of shielded LAN cables. It measures parameters such as loss, power, and reflectance, ensuring that the cable meets the specified performance requirements.
2. Visual Inspection
Visual inspection involves examining the cable for any physical damage, such as cuts, kinks, or improper terminations. This can help identify potential sources of performance issues and ensure the overall integrity of the cable installation.
Conclusion
Testing and verifying the performance of shielded LAN cables is essential to ensure a reliable and high-performance network infrastructure. By following the aforementioned test and verification methods, network professionals can ensure that shielded LAN cables meet the specified standards, provide optimal signal integrity, and minimize the risk of network performance degradation. Regularly scheduled testing and verification can help identify potential issues at an early stage, reducing downtime and ensuring the ongoing performance of critical network systems.