Variable definitions

Use the data in this table to initiate a cable diagnostic test and help you understand the TDR display.

Variable Value

StartTest

When selected, enables the cable diagnostic test.

TestDone

Indicates whether the TDR test is complete (true) or not (false).

CableStatus

Indicates the status of the cable as a summation of the status of the cable conductor pairs.

  • 1—Fail: the cable is experiencing any combination of open and shorted pairs
  • 2—Normal: the cable is operating normally with no fault found

Pair1Status

Indicates the status of the first pair in the cable. Values include:

  • 1—pairFail
  • 2—pairNormal
  • 3—pairOpen
  • 4—pairShorted
  • 5—pairNotApplicable
  • 6—pairNotTested
  • 7—pairForce
  • 8—pinShort

Attention

If a 10MB or 100MB link is established without autonegotiation, Pair 1 returns Forced mode. The pair length is meaningless in this case.

Pair1Length

Indicates the length of the first pair in the cable, in meters, measured by the TDR.

Pair2Status

Indicates the status of the second pair in the cable. Values include:

  • 1—pairFail
  • 2—pairNormal
  • 3—pairOpen
  • 4—pairShorted
  • 5—pairNotApplicable
  • 6—pairNotTested
  • 7—pairForce
  • 8—pinShort

Pair2Length

Indicates the length of the second pair in the cable, in meters, measured by the TDR.

Pair3Status

Indicates the status of the third pair in the cable. Values include:

  • 1—pairFail
  • 2—pairNormal
  • 3—pairOpen
  • 4—pairShorted
  • 5—pairNotApplicable
  • 6—pairNotTested
  • 7—pairForce
  • 8—pinShort

Pair3Length

Indicates the length of the third pair in the cable, in meters, measured by the TDR.

Pair4Status

Indicates the status of the fourth pair in the cable. Values include:

  • 1—pairFail
  • 2—pairNormal
  • 3—pairOpen
  • 4—pairShorted
  • 5—pairNotApplicable
  • 6—pairNotTested
  • 7—pairForce
  • 8—pinShort

Pair4Length

Indicates the length of the third pair in the cable, in meters, measured by the TDR.

CableLength

Indicates the length of cable, in meters, based on average electrical length of 4 pairs. This measurement can be performed whether or not network traffic is present on the cable.

Pair1Polarity

Indicates the polarity of the first pair in the cable. This capability is available only when the cable gigabit link is up, regardless of traffic activity. Values include:

  • 1—inversed
  • 2—normal
  • 3—invalid

Pair1Swap

Indicates the status of the pin assignments for the first pair in the cable. Values include:

  • 1—normal
  • 2—swapped
  • 3—invalid
  • 4—error

Pair1Skew

Indicates the differential length, in meters, of the first pair in the cable.
The skew measurement can be performed only when the cable gigabit link is up, regardless of traffic activity. A value of –1 means an error occurred with the length measurement.

Pair2Polarity

Indicates the polarity of the second pair in the cable. This capability is available only when the cable gigabit link is up, regardless of traffic activity. Values include:

  • 1—inversed
  • 2—normal
  • 3—invalid

Pair2Swap

Indicates the status of the pin assignments for the second pair in the cable. Values include:

  • 1—normal
  • 2—swapped
  • 3—invalid
  • 4—error

Pair2Skew

Indicates the differential length, in meters, of the second pair in the cable.
The skew measurement can be performed only when the cable gigabit link is up, regardless of traffic activity. A value of –1 means an error occurred with the length measurement.

Pair3Polarity

Indicates the polarity of the third pair in the cable. This capability is available only when the cable gigabit link is up, regardless of traffic activity. Values include:

  • 1—inversed
  • 2—normal
  • 3—invalid

Pair3Swap

Indicates the status of the pin assignments for the third pair in the cable. Values include:

  • 1—normal
  • 2—swapped
  • 3—invalid
  • 4—error

Pair3Skew

Indicates the differential length, in meters, of the third pair in the cable.
The skew measurement can be performed only when the cable gigabit link is up, regardless of traffic activity. A value of –1 means an error occurred with the length measurement.

Pair4Polarity

Indicates the polarity of the fourth pair in the cable. This capability is available only when the cable gigabit link is up, regardless of traffic activity. Values include:

  • 1—inversed
  • 2—normal
  • 3—invalid

Pair4Swap

Indicates the status of the pin assignments for the fourth pair in the cable. Values include:

  • 1—normal
  • 2—swapped
  • 3—invalid
  • 4—error

Pair4Skew

Indicates the differential length, in meters, of the fourth pair in the cable.
The skew measurement can be performed only when the cable gigabit link is up, regardless of traffic activity. A value of –1 means an error occurred with the length measurement.