
Optical Switch FTTP Parameters
4025561 Rev
271
Optical Switch FTTP Parameters
Optical Switch User Alarm Data Parameters
User alarms have thresholds that can be set by the user. The default user alarm data
for this module is shown below.
Alarm Function
Low
Threshold
High
Threshold
Hys-
teresis
Typical
Range/
Nom.
Value
PInLoss3 Detects loss of light at Input 3 < NomPin3
- Delta [1]
na Hystamp
l [1]
19 to 23
dBm
PInLoss4 Detects loss of light at Input 4 < NomPin4
- Delta [1]
na Hystamp
l [1]
19 to 23
dBm
TempAlm Module temperature -20 75 0.5 25.0°C
Note: [1] NomPin3, NomPin4, Delta, and Hystampl are control variables.
Optical Switch Module Alarm Data Parameters
Module alarms are set at the factory and may not be adjusted by the user. The
module alarm data for this module is shown below.
Alarm Function
Low
Threshold
High
Threshold
Hys-
teresis
Typical
Range/
Nom.
Value
BothDark Detects loss of light at both
inputs [1]
< NomPin3
- Delta AND
< NomPin4
- Delta [2]
na na OK or
Fault
NoSwitch Detects failure of switch [1] na na na OK or
Fault
PsOk Bus input voltage [1] na na na OK or
Fault
XSPwr Detects excessive optical
input power [1]
na 24.0 dBm na OK or
Fault
Note:
[1] This alarm sets the unit to the safe state, in which the heater is turned off.
[2] NomPin3, NomPin4, and Delta are control variables.
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