Check RJ-45 Cable?

aquasudha · #1 August 30th, 2008, 08:13 AM

Hai Experts,
How can i check RJ-45 cable (strait through or cross over crimped)?
and How can i check that weather i've crimped correct or ......?

questionit · #2 August 30th, 2008, 06:01 PM

Qi

Straight cable will have same wire order (by color) at both ends.

Cross-over will have opposite wire order at each ends.

Check the cable by connecting to physical devices and simply give command PING at Command Prompt to check the cable .

Qi

sicarie · #3 August 30th, 2008, 09:06 PM

A Google search can give you exact information.

aquasudha · #4 September 1st, 2008, 10:35 AM

Quote:

Originally Posted by questionit

Qi

Straight cable will have same wire order (by color) at both ends.

Cross-over will have opposite wire order at each ends.

Check the cable by connecting to physical devices and simply give command PING at Command Prompt to check the cable .

Qi

After crimping colors r not visible properly. in this case how can i check the cable?

questionit · #5 September 1st, 2008, 11:30 AM

Quote:

Originally Posted by aquasudha

After crimping colors r not visible properly. in this case how can i check the cable?

Just connect both ends of the cable to the devices and give PING command.

You will need to check the wires if either of the following displays when you Ping:

1) Ping responce time is slow
2) Any of the 4 attemps the Ping command makes doesn't get any responce (Timed out is displayed)

Hope it helps
Qi

pradhan1983 · #6 September 4th, 2008, 12:59 PM

Straight cable will have same wire order (by color) at both ends.
For checking cross cable the order is little different.
1st end . 1(or-w) 2(or) 3(gr-w) 4(bl) 5(bl-w) 6(gr) 7(br-w) 8(br)
2nd end. 3 6 1 4 5 2 7 8

themadjester · #7 September 5th, 2008, 08:04 AM

if you are making many cables you may find it worth while to invest in a cable tester. You can get them as cheap as $10.

There can often be problems with cables that are not visually observable to this is well worth looking into.

aquasudha · #8 September 5th, 2008, 08:11 AM

Quote:

Originally Posted by themadjester

if you are making many cables you may find it worth while to invest in a cable tester. You can get them as cheap as $10.

There can often be problems with cables that are not visually observable to this is well worth looking into.

hai frnd
thanks, where i can get the cable tester? is it show the calble color arrangement in both end?

themadjester · #9 September 5th, 2008, 08:21 AM

check digikey, amazon and other internet retailers, local electronics supply in town etc.

more advances/higher quality testers will of coarse cost more but a cheap one will likely suit your purposes.

Check RJ-45 Cable?

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