Скачать с ютуб Cat6 Testing Poor Workmanship - Untwisted Wires and Kinks with Fluke DSX 8000 Versiv 2 в хорошем качестве

Cat6 Testing Poor Workmanship - Untwisted Wires and Kinks with Fluke DSX 8000 Versiv 2

Cat6 Testing Untwisted Wires and Kinks in the Wire Fluke DSX 8000 Versiv 2 TLDW: Untwisting wires is the quickest way to failing a wire test. About an inch of untwisting is all you need to fail. It's fairly resistant to removing the outer sheathing. I could pass with 6" of the cable sheathing stripped but a negative impact on performance was showing. Kinks in the wire it was fairly resistant to - however if you kink the wire and remove the kink later, much of the wires performance would be restored. So some of my kinked wire failures were from the NEXT value which I had to lookup. Link of quoted text below: "What is near-end crosstalk (NEXT)? Near-end crosstalk (NEXT) is an error condition that can occur when connectors are attached to twisted pair cabling. NEXT is usually caused by crossed or crushed wire pairs. The error condition does not require that the wires be crushed so much as the conductors inside become exposed. Two conductors only need to be close enough so that the radiating signal from one of the wires can interfere with the signal traveling on the other. Most medium- to high-end cable testers are capable of testing for NEXT errors. When signals moving through adjacent pairs of wire in a twisted pair copper cabling interfere with each other, it leads to crosstalk. Near-end crosstalk occurs when a signal on one pair of wires is picked up by an adjacent pair of wires. It is the portion of the transmitted signal that's electromagnetically coupled back into the received signal causing interference. How is near-end crosstalk measured? NEXT is expressed in dB. A higher dB indicates less crosstalk is received by the disturbed link. Lower NEXT means more crosstalk. Higher NEXT means less crosstalk." https://www.techtarget.com/searchnetw.... Cat6 Punchdown print: https://www.thingiverse.com/thing:614... Remixed from this version: https://www.thingiverse.com/thing:197... Cat6 RJ45's https://www.amazon.com/gp/product/B09...