This cable tester have a broken LED making it look like cables are defect
How do you test a cable tester? Do you have a cable tester tester? And how do you know that you cable tester tester is in fact working, without a cable tester tester tester?
Boring answer: You use it to test known-good and known-defective cables and check it's behaving as expected. /srs
Presumably you would also use the cable tester tester to test known-good and known-defective cable testers and check it's behaving as expected. /joke
Is there supposed to be a picture? Cause I don't see it.
How do you test a cable tester? Do you have a cable tester tester? And how do you know that you cable tester tester is in fact working, without a cable tester tester tester?
Boring answer: You use it to test known-good and known-defective cables and check it's behaving as expected. /srs
Presumably you would also use the cable tester tester to test known-good and known-defective cable testers and check it's behaving as expected. /joke
Is there supposed to be a picture? Cause I don't see it.