Alcatel 1660SM Technical Handbook page 423

Optical interfaces parameters
Main items are:
•
FC/PC or SC/PC optical connectors
•
Wavelength bandwidth (main signal):
•
Input power:
•
Output power: –14 dBm
Measures
A measure of the following analogue parameters will be available to operator (by craft terminal or operating
system) via shelf controller and equipment controller:
•
Pin: optical power at the input connector
•
Pout: optical power at the output connector
•
Rel_Ip: relative I_pump; percentage ratio of actual I_Pump to I_Pump measured at begin of life
Alarms
The following alarm flags will be available to network operator (by craft terminal or operating system) via
shelf controller and equipment controller:
•
ILoS: Input Loss of Signal: loss of power on input connector.
Activation threshold –44 dBm, deactivation threshold –42 dBm; threshold accuracy ±0.5 dBm
Activation/deactivation time: 10 ms max
Consequent actions: shutdown of pump laser and stop of the filter control
Classification: external urgent alarm
•
Ideg: Input Degrade: low power on input connector.
Activation threshold –41 dBm, deactivation threshold –40.5 dBm; threshold accuracy ±0.5 dBm
Activation/deactivation time: 50 ms max
Consequent actions: none
Classification: external not urgent alarm
Masked by IloS.
•
LaserDeg: Laser Degrade: logic "or" of relative and absolute degrade:
– relative degrade: actual pump current higher than 1.2 * pump current measured at begin
of life;
– absolute degrade: actual pump current higher than warning threshold level.
Activation/deactivation time: 10 sec max
Consequent actions: none
Classification: internal not urgent alarm
Traffic not affected
Actions required to operator: unit replacing (preventive maintenance)
Masked by Input deg
•
HW Fail: Logic "or" (at the shelf controller level) of the following alarms:
– Ex_Pout
– Ex_Ipump
– Ex_ITEC
– Wr_Vref
Consequent actions: none
Classification: internal urgent alarm
ED
02
–38 dBm to –18 dBm
1530 to 1565 nm
(@ BER ≤ 10E
–10
)
(to be connected to a JE3–CH34 optical receiver)
3AL 91669 AA AA
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