Maintenance Alarm For The Fibre-Optic Cables - SMC Networks EX245-EA2 Series Operation Manual

5.2. Maintenance alarm for the Fibre-optic cables

When the strength margin of the Fibre-optic communication is not enough, the EX245-SPN1A
issues a "Maintenance alarm" for the Fibre-optic cable, if monitor setting of communication port is
enable.
If the FO LED of the EX245-SPN1A is flashing (more than 0 dB but less than 2 dB) or ON (the
margin is 0 dB), refer to
In order to recover from this alarm, please check in the following order.
Example
②
Previous Device
Port
Step 1: Check/exchange ① the Fibre-optic cable.
Step 2: Check/exchange ② the previous device.
Step 3: Check/exchange ③ the EX245-SPN1A.
Section 6.4.5.
③
EX245-SPN1A
FO1: ON
FO2: OFF
Port1
①
Port2
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No.EX※※-OMW0011-B