Perle Systems S-100MM-XXXXX manual DIP Switch Settings, Link Mode Switch, Far End Fault Switch

DIP Switch Settings

Link Mode (Switch 1)

Switch Position	Mode
Up (default)	Link Pass-Through Mode
Down	Standard Mode

Link Pass-Through: In this mode, the link state on one fiber connection is directly reflected through the media converter to the other fiber connection.

For example, if a Far End Fault (FEF) indication is received on port MM1, the media converter in turn sends a signal to turn off the transmitter on port MM2/SM2. When the Far-End Fault indication is cleared the transmitter is then turned back on.

Standard Mode: In this mode, the links on the fiber side can be brought up and down independently of each other. A loss of link on either fiber connection can occur without affecting the other fiber connection.

Far End Fault (Switch 2)

Switch	Mode
Position
Up (default)	Enabled
Down	Disabled

Enabled: If the media converter detects a loss of fiber signal on the fiber receiver, the media converter will immediately send a FEF on the fiber link. This, in effect, notifies the fiber link partner that an error condition exists on the fiber connection.

If the remote media converter is set up for Far End Fault (FEF) and the local media converter is set up with Link Pass-Through, a loss of fiber link on either the transmit or receive link will be passed through to the end fiber connection.

Disabled: Far End Fault indications are not transmitted regardless of the condition of the receive signal on the 100BASE-FX fiber connection.

Fast Fiber to Fiber Media Converter – Installation Guide 4