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This How.com.vn teaches you how to test an Ethernet cable. To test an Ethernet cable, you need a cable tester. There are different models of cable testers you can purchase. Some have a detachable receiver unit that you can use to test a cable across two rooms.
Steps
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Purchase an Ethernet cable tester. There are many models you can purchase. Make sure it has a battery in it and power it on.
Plug one end of the cable into the transmit jack. The transmit jack on the tester maybe be labeled "TX".Advertisement
Plug the other end of the cable into the receiver jack.The receiver jack may be labeled "RX" on the device. Some testers have a detachable receiver you can use to test the cable across different rooms.[1]
Check the lights on the tester. Most testers will have 2 sets of 8 LED lights that correspond to the 8 pins on the transmitting and receiving end of the Ethernet cable. There will also be a G light for the ground. It will test each pin one at a time. If all 8 pins light up on both ends, the cable is good. If any of the lights do not light up on either end, this indicates a short in the cable. Don't worry if the G light doesn't light up. If the lights on either end flash out of order, this indicates that you are testing a crossover cable. As long as all 8 lights flash, the cable is good.[2]
Community Q&A
- QuestionIf no lights are showing, is my cable tester broken?
Community AnswerYes. Most likely, your tester isn't working. - QuestionIs it possible that when using a tester, the cable checks as good, yet it does not work?
BigbigbignthvsdCommunity AnswerMaybe. It is a possibility. The ethernet cable "could: work, but you never know until you try. - QuestionI have 8 lights showing but my laptop says "cable not connected", so no signal. What is the issue?
Community AnswerTry to reconnect the cable again. Doing this may resolve your issue.
Tips
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About This Article
1. Purchase an Ethernet cable tester.
2. Plug cable into the transmitter.
3. Plug the other end of the cable into the receiver.
4. Check that all 8 lights on the tester light up.
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