Cisco Optical Hub and Hub-Node Installation Guide
Chapter 3 Setup and Operation
58
OL-29936-01
[1] This alarm sets the unit to the safe state. In the safe state the amplifier is turned
off causing the optical amplifier output to be disabled.
off causing the optical amplifier output to be disabled.
[2] This alarm tests for presence of +24V, -6V from the OIB.
[3] This alarm indicates the state of the internal voltages (+24V, +5.0V, Vref).
[4] See following for laser nominal set point temperature based on module
temperature.
temperature.
[5] See next table for input power alarm values.
Input Power Alarm Parameters
The following tables define the input power alarm parameters for the EDFA.
Gain Flattened EDFA - Constant Gain Mode (Default)
Product Type
Major
High
High
Minor
High
High
Minor
Low
Low
Major
Low
Low
Values
Typical
Value
Value
Hysteresis
Units
17.0 / 21.0 dBm
Low Gain
Low Gain
45.0
25.0
-8.0
-10.0
Ok
Alarm
-7.0
0.1
dBm
17.0 / 21.0 dBm
High Gain
High Gain
45.0
25.0
-13.0
-15.0
Ok
Alarm
-12.0
0.1
dBm
Gain Flattened EDFA - Constant Power Mode
Product Type
Major
High
High
Minor
High
High
Minor
Low
Low
Major
Low
Low
Values
Typical
Value
Value
Hysteresis
Units
17.0 / 21.0 dBm
Low/High Gain
45.0
25.0
0
-10.0
Ok
Alarm
5.0
0.1
dBm
Broadcast EDFA - Constant Power Mode (Default)
Product Type
Major
High
High
Minor
High
High
Minor
Low
Low
Major
Low
Low
Values
Typical
Value
Value
Hysteresis
Units
17.0/20.0/22.0
dBm
dBm
45.0
25.0
0
-10.0
Ok
Alarm
5.0
0.1
dBm
Broadcast EDFA - Constant Gain Mode
Product Type
Major
High
High
Minor
High
High
Minor
Low
Low
Major
Low
Low
Values
Typical
Value
Value
Hysteresis
Units
17.0/20.0/22.0
dBm
dBm
45.0
25.0
-13.0
-15.0
Ok
Alarm
-12.0
0.1
dBm