Cabletron Systems pmn User Manual

Verify that the RJ45 connector on the twisted pair segment has the 
proper pinouts.

Check the cable for continuity.

Make sure that the twisted pair connection meets the cable 
specifications outlined in the Cabletron Systems Cabling Guide.

Confirm that the crossover switch is in the correct position.

If a link is not established, see 

, before 

for details).

The FE-100FX and FE-100F3 have SC style network ports (see 

Remove the protective rubber covers from the fiber optic ports on the 
applicable port on the module and from the ends of the connectors.

An odd number of crossovers (preferably one) must be 
maintained between like devices so that the transmit port of 
one device is connected to the receive port of the other device 
and vice versa.

If the fiber optic cable being used has SC style connectors that 
do not resemble MIC style connectors, or has SC connectors 
on one end and a different type on the other, such as ST 
connectors, ensure that the proper crossing over occurs.

The FE-100F3 uses Class 1 lasers. Do not use optical 
instruments to view the laser output. The use of optical 
instruments to view laser output increases eye hazard. When 
viewing the output optical port, power must be removed from 
the network adapter.