Reverse Path Setup Procedure ........................................................................................... 101
Reconfiguring Forward Signal Routing ............................................................................ 103
Reconfiguring Reverse Signal Routing ............................................................................. 113
Maintenance 121
Opening and Closing the Housing .................................................................................... 122
Preventative Maintenance .................................................................................................. 124
Removing and Replacing Modules ................................................................................... 127
Care and Cleaning of Optical Connectors ........................................................................ 134
Troubleshooting 139
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 151
Appendix A Technical Information 153
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 197
Expanded Fiber Tray Overview......................................................................................... 198
Expanded Fiber Tray Installation ...................................................................................... 200
Fiber Management System ................................................................................................. 203
Configuration Examples ..................................................................................................... 209
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