Exfo FTB-800 Series for FTB-1 Manual do Utilizador descarregar pdf (Página 356)

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101

Test Results

346 FTB-700G/800 Series

Summary (Cable Test)

When the link is down:

If the determined Wire Map is either MDI, MDIX, MDI (-), MDIX (-), or

Noise (Link up), the test is declared as PASS. If the determined Wire

Map is either Short, Short-between-pair, Open, Noise (Link down), or

Unknown, the test is declared as FAIL.

Note: Refer to Ethernet Cables on page 543 for cable pinout.

 Distance To Fault (m/ft) gives the distance to fault from the near end

for each pair, unless the problem is due to excessive noise. Noise may

be due to electrical noise causing communication error.

 Prop. Delay (ns) indicates the propagation delay of a signal through

each pair.

 Length (m/ft) indicates the cable length of each pair.

Short Short-circuit between Tip and Ring wires of a pair or

Tip or ring wire of a pair is connected with an alien

wire grounded.

Open No cable plugged in, remote end open, or either one

or two wires of a pair are not connected.

Short-between

-pairs

Short between one or two wires of a pair with one or

two wires of another pair. Short between more than

two pairs, including one or two wires for each pair.

Noise Excessive noise on a pair most likely caused by a link

partner running in 10/100 Mbit/s forced mode. In this

case, no distance is reported and there is no

comparison with any threshold.

Unknown No fault has been identified but the link is down. To

maximize the cable test result, it is preferable to have

the far end equipment powered up.

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Exfo FTB-800 Series for FTB-1 Manual do Utilizador Página 356

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