Alarm Interface - Huawei OptiX OSN 2500 Quick Installation Manual

4
Installing and Routing the Alarm Cables
a

Alarm Interface

Alarm output interface(ALMO1) and alarm output concatenating
interface(ALMO2)
Pin Funciton
The positive of critical and
1
major alarm output
The negative of cirtical and
2
major alarm output
The positivie of minor and
3
warning alarm output
4 Reserved
Alarm input interface (ALMI1~ALMI2)
Pin Funciton
1 Alarm input 1
2 The ground of alarm input 1
3 Alarm input 2
4 Alarm input 3
Pin Funciton
5 Reserved
The negative of major and
6
warning alarm output
7 Reserved
8 Reserved
Pin Funciton
5 The ground of alarm input 3
6 The ground of alarm input 2
7 Alarm input 4
8 The ground of alarm input 4
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SEI board