Appendix B Enhanced Digital Return Multiplexing Applications - Cisco GS7000 Installation And Operation Manual

Appendix B
Enhanced Digital Return Multiplexing Applications
158
B
auto letter
Appendix B
Enhanced Digital Return
Multiplexing Applications
This appendix explains the installation and application of the Cisco
Enhanced Digital Return (EDR) 85 Multiplexing System in the GS7000
Node.
The products are intended for digital transmission of reverse path
signals over a fiber optic link from the node to the headend.
The Cisco Enhanced Digital Return (EDR) 85 System expands the
functionality of GS7000 and GainMaker 4-Port and Reverse
Segmentable Nodes by increasing the performance, reach, and
efficiency of the reverse path transmissions.
The Cisco EDR 85 System includes EDR Transmitter modules that
install in GainMaker and GS7000 Nodes, and companion Cisco
Prisma® high-density (HD) EDR PRX85 Receiver modules that install
in a Prisma II or Prisma II XD chassis at the headend or hub. The
transmitter and receiver use Small Form Factor Pluggable (SFP) optical
pluggable modules (OPMs) for enhanced flexibility. The Cisco EDR 85
System operates over the 5-85 MHz range and supports all standard
reverse frequency bandwidths at 40, 42, 55, 65, and 85 MHz.
The Cisco Enhanced Digital Return (EDR) 85 Systems includes the
EDR 1:1 multiplexing system and the 2:1 multiplexing system.
In This Appendix

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