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EXFO FTB-7000 OTDR for FTB-200 v2 User Manual

Page 296

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Troubleshooting

282

FTB-7000 Series

The application displays

a message indicating

that a “live fiber error”

occurred and the fiber
was not connected to

the SM Live port.

Light has been

detected on the OTDR

port during the

acquisition or while

you were monitoring a

fiber in real-time

mode.

Disconnect the fiber from the OTDR

port. Press OK to close the message.
Start another acquisition without any

fiber connected to the OTDR. The

message about live fiber error should

not appear and the OTDR trace

should look “normal”.
If you still see the message about live

fiber error even if no fiber is

connected to the OTDR, contact

EXFO.
Never connect a live fiber to the

OTDR port without a proper setup.

Any incoming optical power ranging

from –65 dBm to –40 dBm will affect

the OTDR acquisition. The way the

acquisition will be affected depends

on the selected pulse width.

Any incoming signal greater than –

20 dBm could damage your OTDR

permanently. For live-fiber testing,

refer to the SM Live port

specifications for the characteristics

of the built-in filter.

Problem

Cause

Solution