T568A vs T568B - what's the difference and how to test patch leads.

Summary

In this video, the host demonstrates how to test network patch leads using the Patch App & Go system. The video covers the differences between T568A and T568B wiring standards, with a recommendation to use the more common B system. The host explains the importance of understanding straight-through and crossover cables and walks through the process of testing leads using couplers, ensuring accurate wiring. By visually inspecting the pin layout and using the app for quick testing, users can easily verify their patch cables for proper connections.

Takeaways

• 🔧 The video is a continuation of the home networking series, focusing on testing patch leads using the Patch App & Go tool.
• 📏 There are two systems for laying out conductors, T568A and T568B, with B being the most commonly used system.
• 🔄 Straight-through patch leads are the most common type, while crossover leads are less frequent and used for connecting similar devices like PCs.
• 💡 The color code in patch leads matters, with white-orange representing the B method and white-green representing the A method.
• 📲 The Patch App & Go tool is used to test patch leads, and the process involves quick tests using RJ45 couplers and a mobile app.
• 📑 The tester app provides options for different cable types, such as Category 6, and allows the user to select between the A and B methods.
• ✅ Both the A and B patch leads passed the quick tests using the Patch App & Go system.
• 🔄 For crossover leads, one end is wired with the A method and the other with the B method, flipping the terminals for sending and receiving data.
• 🛠️ Testing the crossover lead showed a mismatch but confirmed correct wiring by visually checking the pinout colors on both ends.
• 🎯 The video reinforces the recommendation to stick with the B method for most installations, as it's the most common system.

Q & A

What is the purpose of the Patch App & Go tester in the video?

The Patch App & Go tester is used to test patch leads to confirm that the connections or terminations are correctly laid out between the patch panel and data points in a network installation.

What is the difference between the T568A and T568B wiring systems?

The difference between T568A and T568B wiring systems lies in the color layout of the conductors. T568B is the more commonly used system, especially in Europe, while T568A is also used but less frequently.

Why is the T568B system more commonly recommended?

T568B is more commonly recommended because it is the most widely used system in networking installations, especially in Europe. It ensures compatibility with most network setups.

What is the function of a straight-through patch lead?

A straight-through patch lead is used to connect devices like PCs to switches or hubs. It ensures that the correct terminals on both ends of the cable (1 and 2 for sending, 3 and 6 for receiving) are connected without any crossover.

When would you need to use a crossover patch lead?

A crossover patch lead is used when connecting two similar devices, such as two PCs. It swaps the sending and receiving terminals on one end to allow direct communication between the devices.

How can you visually identify if a patch lead is wired using the T568A or T568B method?

To identify the wiring method, hold the RJ45 connector with the gold pins facing up and look at the left-most pin (pin 1). If it's white and orange, the patch lead uses the T568B method. If it's white and green, it uses the T568A method.

What equipment is needed to test patch leads using the Patch App & Go?

To test patch leads with the Patch App & Go, you need the Patch App & Go dongle, RJ45 couplers, and the Patch App & Go mobile app. You also need the leads to be tested and smart plugs for connecting the devices.

What steps are involved in testing a patch lead using the Patch App & Go?

To test a patch lead: 1) Connect the dongle and a smart plug to each end of the patch lead. 2) Use the app to select the cable type and wiring system (A or B). 3) Press the 'Test' button and check the results for a pass or fail indication.

How does the Patch App & Go determine if a patch lead is correctly wired?

The Patch App & Go checks if the wiring at both ends of the patch lead follows the correct pattern (either T568A or T568B) and if the connection is stable. It gives a pass or fail result based on these criteria.

What is the significance of the Euro module in network installations?

The Euro module is a connection point for network cables in a structured cabling system. It often has markings for both T568A and T568B systems, making it easier to follow the correct wiring pattern during installation.