How to test an RJ45 cable in place?
rafaloune
Posted messages
2
Status
Membre
-
brupala Posted messages 111938 Registration date Status Membre Last intervention -
brupala Posted messages 111938 Registration date Status Membre Last intervention -
My homemade straight RJ45 cable runs through the walls (20m), connecting the Livebox to a Windows XP computer with "limited or no connectivity." I have re-terminated several new connectors. Connected at the Livebox side, I measure ohms with a multimeter at the other end: I find that the measurements are identical for pairs 1 and 2, 3 and 6, 4 and 5, and 7 and 8, which proves that the signal is indeed being sent by the box, right?
When I try with another homemade straight RJ45 cable (a bit shorter at 6m) placed on the ground, everything works fine. I’ve read all the posts about RJ45... I don’t know what to do anymore.
Does anyone have an idea on how to test the cable in place?
When I try with another homemade straight RJ45 cable (a bit shorter at 6m) placed on the ground, everything works fine. I’ve read all the posts about RJ45... I don’t know what to do anymore.
Does anyone have an idea on how to test the cable in place?
Configuration: Windows XP SeaMonkey 1.0.2
2 réponses
You can't really check a cable; if you use another one and it works, then you can conclude that your cable is not good (or maybe it's too long, who knows, but still).
Continuity doesn't mean anything; you only know that your wire isn't cut, but it doesn't tell you whether the data is being transmitted properly. There's a huge difference between simple electric current and a signal. The cable can be pinched, untwisted, or even rusty, why not (who knows if a mouse didn’t chew on the sheath). Imagine you have a nail in your cable; your tester will only see that as good (you could have continuity from one pair to another).
It may seem silly, but these are things that can happen; the nail story comes from the experience of a friend.
--
Those who want to know how to use eMule Paradise, contact me by email.
Continuity doesn't mean anything; you only know that your wire isn't cut, but it doesn't tell you whether the data is being transmitted properly. There's a huge difference between simple electric current and a signal. The cable can be pinched, untwisted, or even rusty, why not (who knows if a mouse didn’t chew on the sheath). Imagine you have a nail in your cable; your tester will only see that as good (you could have continuity from one pair to another).
It may seem silly, but these are things that can happen; the nail story comes from the experience of a friend.
--
Those who want to know how to use eMule Paradise, contact me by email.
