Chapter 2 Theory of Operation
54
Switch Operation
The following table describes the optical switch function.
Primary Input
Secondary Input
Alarms
Optical Switch
Path A Optical Power >
ThresholdA (default)
Path B Optical Power >
Threshold B [1]
None
Switch to Path A
Path A Optical Power <
ThresholdA (default)
Path B Optical Power >
Threshold B [1]
Loss of Input
Light at Path A
Switch to Path B
Optical Power
Path B Optical Power >
Threshold B [1]
Path B Optical Power <
Threshold B [1]
Loss of Input
Light at Path B
Switch to Path A
Path A Optical Power <
ThresholdA (default)
Path B Optical Power <
Threshold B [1]
Both Dark
Switch to Path A
Optical Power
Path B Optical Power >
ThresholdB (User Setting)
Path A Optical Power >
ThresholdA [1]
None
Switch to Path B
Path B Optical Power <
ThresholdB (User Setting)
Path A Optical Power >
ThresholdA [1]
Loss of Input
Light at Path B
Switch to Path A
Optical Power
Path B Optical Power >
ThresholdB (User Setting)
Path A Optical Power <
ThresholdA [1]
Loss of Input
Light at Path A
Switch to Path B
Path B Optical Power <
ThresholdB (User Setting)
Path A Optical Power <
ThresholdA [1]
Both Dark
Switch to Path B
Optical Power
[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
Default
Value
Values
Min
Max
Step
Unit
Mode
Automatic or manual
mode
Auto(0)
Auto(0)
Manual(1)
Threshold B Switching threshold,
input optical power
at input B
5.0
-10.0
14.0
0.1
dBm
Содержание GS7000
Страница 1: ...Cisco 1 2 GHz GS7000 Node Installation and Operation Guide ...
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Страница 7: ...Contents v Glossary 213 Index 225 ...
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Страница 19: ...Laser Warning Labels xvii ...
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Страница 23: ...Equipment Description 3 The following illustration shows the external housing of the 1 2 GHz GS7000 Node ...
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Страница 38: ...Chapter 2 Theory of Operation 18 Left Right Segmented ...
Страница 84: ...Chapter 2 Theory of Operation 64 1 1 EDR Transmitter 3 2 1 EDR Transmitter 7 ...
Страница 96: ...Chapter 3 Installation 76 ...
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Страница 112: ...Chapter 4 Setup and Operation 92 Left Right Segmented ...
Страница 116: ...Chapter 4 Setup and Operation 96 Right side Ports 4 5 and 6 illustration ...
Страница 143: ...Opening and Closing the Housing 123 ...
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Страница 232: ...Appendix C Expanded Fiber Tray 212 ...
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