Operation; Loss Carry Forward (Lcf); Internal Test Head - Advantech B+B SmartWorx IMcV-10G User Manual

OPERATION

LOSS CARRY FORW ARD (LCF)
When a fault is detected on the incoming optical line that would severely
affect the quality of the corresponding output optical signal, this signal is
turned OFF as opposed to sending a bad optical signal to the next unit over
the optical line. The Loss Carry Forward function provides a very positive
fault indication to the downstream unit.
If the LCF function is not enabled, the transmitted optical signal is dependent
on the SFP+ units installed. This fault indication may become very
intermittent depending on the actual optical signal level.

INTERNAL TEST HEAD

The SFP+ unit supports an internal test head function. This intrusive function
can send a "test" signal pattern to the optical port. When this pattern is
detected by the far end unit, it can be automatically looped back by the far
end unit to the local end where it is checked for errors. In this way, complete
full bandwidth, line test, and verification can be performed on the line from
only one end.
iMcV-10G Fiber Mode Converter
Internal Test Head Function
10
SFP+/SFP+