Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have bought a network cable tester and in the manual it said that all lights from 1-8-G should light up in sequence. However I get only 8 without G, although the cable is in working condition.

Here is a picture of the manual:

enter image description here

Here is a video

The product's model is NS-468. If you have the same product, can you tell me what is wrong and what G is intended for?

share|improve this question
G = ground => for STP (Shielded Twisted Pair) Most common use is unshielded. – Fiasco Labs Mar 16 at 19:57
up vote 11 down vote accepted

There is nothing wrong with your tester.
There are 8 strands in an unshielded network cable which is what you tested in your video.
A shielded cable also has a grounded metal sheath surrounding the 8 strands. The G on your tester refers to this.
I have a similar tester but in mine the shield is referred to as "Shield".

share|improve this answer
G refers to metal sheath? If so, why it does not blink? – Boris_yo Sep 30 '11 at 18:34
The cable in your video doesn't appear to have one, it's unshielded. – Tog Sep 30 '11 at 18:36
There is nothing wrong with that, it is a perfectly valid cable type. – Tog Sep 30 '11 at 18:42
Oh i got it now. I was slow back then. – Boris_yo Oct 2 '11 at 21:09

In my CHL-468 tester, the G position is not populated by an LED. I actually soldered in an LED and got it to work.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.