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No.EX##-OMY0004
9.2. Maintenance alarm for the Fibre-optic cables
When the signal strength margin of the Fibre-optic communication is not enough, the EX245-FPS1
issues a "Maintenance alarm" for the Fibre-optic cable, if monitor setting of communication port is
enabled.
If the FO LED of the EX245-FPS1 is flashing (more than 0 dB but less than 2 dB) or ON (the margin is 0
dB), refer to the Section 10.8.1.5.
In order to recover from this alarm, please check in the following order.
Example
Step 1: Check/exchange ① the Fibre-optic cable.
Step 2: Check/exchange ② the previous device.
Step 3: Check/exchange ③ the EX245-FPS1.
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