Table 4-30 Description of the Cable Diagnostics

The Cable status includes the following items: Table 4-31 Description of the Cable Status.

 

 

 

 

 

•

Item

Description

 

 

 

 

 

•

Pair

The twist pair of the UTP cable. The pair groups as follow:

 

 

 

A (Pin 1,2)

 

 

 

B (Pin 3,6)

 

 

 

C (Pin 4,5)

 

 

 

D (Pin 7,8)

 

 

 

 

 

•

Length[m]

When properly terminated, Cable Diagnostics reports the approximate cable

 

 

 

length in meters of each of the four cable pair A, B, C, and D.

 

 

 

 

 

•

Status

The cable test results. Possible values are:

 

 

 

• Proper - The cable passed the test.

 

 

 

• Open - The cable is connected on only one side or there is no cable connected

 

 

 

to the port

 

 

 

• Short - A short has occurred in the cable. With 10/100BASE link, the status of

 

 

 

Pair C and Pair D will be “Short”.

 

 

 

• Abnormal termination – An improper termination be detected. Proper

 

 

 

termination of Cat5 cable requires 100Ω differential impedance between

 

 

 

the positive and negative cable terminals. IEEE STD 802.3 allows for a

 

 

 

termination of as large as 115Ω or as small as 85Ω. If the termination

 

 

 

falls out of this range, it is reported as falls an anomalous termination.

 

 

 

 

 

 

 

Table 4-31 Description of the Cable Status

"Be sure to running the Cable diagnostics with standard Cat 5e or Cat 6 UTP cable. With some of the

Note: UTP cables that not match the standard of Cat 5e, it might cause the 10/100Base-TX link down after the cable diagnostics.

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