Cisco GS7000 Installation And Operation Manual page 74

Chapter 2 Theory of Operation
Switch Operation
The following table describes the optical switch function.
Primary Input
Path A Optical Power >
ThresholdA (default)
Path A Optical Power <
ThresholdA (default)
Path B Optical Power >
Threshold B [1]
Path A Optical Power <
ThresholdA (default)
Path B Optical Power >
ThresholdB (User Setting)
Path B Optical Power <
ThresholdB (User Setting)
Path B Optical Power >
ThresholdB (User Setting)
Path B Optical Power <
ThresholdB (User Setting)
[1] Hysteresis Amplitude (default 1.0 dB) is the value above which the input optical
power must rise for the switch to begin sequence to return to the primary switch
position. Hysteresis Amplitude is a user configurable parameter.
Configurable Parameters
The following table defines the configurable parameters for the optical switch.
Parameter Function
Mode Automatic or manual
mode
Threshold B Switching threshold,
input optical power
at input B
54
Secondary Input
Path B Optical Power >
Threshold B [1]
Path B Optical Power >
Threshold B [1]
Path B Optical Power <
Threshold B [1]
Path B Optical Power <
Threshold B [1]
Path A Optical Power >
ThresholdA [1]
Path A Optical Power >
ThresholdA [1]
Path A Optical Power <
ThresholdA [1]
Path A Optical Power <
ThresholdA [1]
Default
Value
Auto(0)
5.0
Alarms
None
Loss of Input
Light at Path A
Loss of Input
Light at Path B
Both Dark
None
Loss of Input
Light at Path B
Loss of Input
Light at Path A
Both Dark
Values Min
Auto(0)
Manual(1)
-10.0
Optical Switch
Switch to Path A
Switch to Path B
Optical Power
Switch to Path A
Switch to Path A
Optical Power
Switch to Path B
Switch to Path A
Optical Power
Switch to Path B
Switch to Path B
Optical Power
Max Step Unit
14.0 0.1 dBm