Cisco GS7000 Installation And Operation Manual page 6

Contents
Opening and Closing the Housing ...................................................................................... 68
Preventative Maintenance .................................................................................................... 70
Removing and Replacing Modules ..................................................................................... 73
Care and Cleaning of Optical Connectors .......................................................................... 79
Troubleshooting
No RF Output at Receiver RF Test Point: Optical Power LED on Receiver Module is
off ............................................................................................................................................. 84
No RF Output: Fiber Optic Light Level is Good, Receiver Optical Power LED is on .. 86
Poor C/N Performance ......................................................................................................... 89
Poor Distortion Performance ................................................................................................ 91
Poor Frequency Response ..................................................................................................... 93
No RF Output from Reverse Receiver ................................................................................ 95
Customer Support Information
Appendix A Technical Information
Linear Tilt Chart ................................................................................................................... 100
Forward Equalizer Chart .................................................................................................... 102
Appendix B Enhanced Digital Return Multiplexing Applications 104
Enhanced Digital Return System Overview .................................................................... 105
Enhanced Digital Return (EDR) System Installation ...................................................... 119
Transmitter Module Setup Procedure .............................................................................. 126
Reverse Balancing the Node with EDR ............................................................................ 128
Troubleshooting ................................................................................................................... 131
Appendix C Expanded Fiber Tray
Expanded Fiber Tray Overview......................................................................................... 138
Expanded Fiber Tray Installation ...................................................................................... 140
Fiber Management System ................................................................................................. 143
Configuration Examples ..................................................................................................... 149
Glossary
Index
iv
83
97
99
137
153
165