Cisco Prisma II Dual Optical Input Enhanced Digital Return (EDR)

The Cisco Enhanced Digital Return (EDR) 85 System expands the functionality of Compact Segmentable Nodes by increasing the performance, reach, and efficiency of the reverse path transmissions. The Cisco EDR 85 System includes EDR Compact Segmentable Node A9020x Transmitter modules that install in the node, and companion 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 SFP (Small Form Factor Pluggable) style 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 EDR Receiver module receives the optical signal and performs conversion back to the baseband data stream. The resulting data streams are converted back to analog reverse path signals for routing to termination equipment. The EDR Receiver module is available in the half-height High Density (HD) form factor. The receiver OPMs are available in Standard Range (SR) and Extended Range (XR) configurations. Both configurations feature a dual LC/PC optical input connector that feeds two independent reverse optical receivers, each with its own RF output port. A single EDR Receiver module occupies one slot in a Prisma II XD chassis. Two EDR HD receiver modules can be vertically stacked in an associated Prisma II Host Module that occupies a single-wide slot in the Prisma II standard chassis. Up to 26 HD modules can operate in a standard 6RU chassis*, while up to 16 HD modules can operate in the Prisma II XD chassis. The ability to mix EDR Receiver modules with other Prisma II HD modules in the same chassis greatly enhances the flexibility of the platform.

* The 56-connector version of the chassis is required to make use of both receivers in one chassis slot.