Cisco GS7000 Installation And Operation Manual page 6

Contents
Reverse Path Setup Procedure ........................................................................................... 101
Reconfiguring Forward Signal Routing ............................................................................ 103
Reconfiguring Reverse Signal Routing ............................................................................. 113
Maintenance
Opening and Closing the Housing .................................................................................... 122
Preventative Maintenance .................................................................................................. 124
Removing and Replacing Modules ................................................................................... 127
Care and Cleaning of Optical Connectors ........................................................................ 134
Troubleshooting
No RF Output at Receiver RF Test Point: Optical Power LED on Receiver Module is
off ........................................................................................................................................... 140
No RF Output: Fiber Optic Light Level is Good, Receiver Optical Power LED is on 142
Poor C/N Performance ....................................................................................................... 144
Poor Distortion Performance .............................................................................................. 146
Poor Frequency Response ................................................................................................... 148
No RF Output from Reverse Receiver .............................................................................. 150
Customer Support Information
Appendix A Technical Information
Linear Tilt Chart ................................................................................................................... 154
Forward Equalizer Chart .................................................................................................... 156
Appendix B Enhanced Digital Return Multiplexing Applications 158
Enhanced Digital Return System Overview .................................................................... 159
Enhanced Digital Return (EDR) System Installation ...................................................... 177
Transmitter Module Setup Procedure .............................................................................. 186
Reverse Balancing the Node with EDR ............................................................................ 189
Troubleshooting ................................................................................................................... 192
Appendix C Expanded Fiber Tray
Expanded Fiber Tray Overview......................................................................................... 198
Expanded Fiber Tray Installation ...................................................................................... 200
Fiber Management System ................................................................................................. 203
Configuration Examples ..................................................................................................... 209
iv
121
139
151
153
197