Cisco Cisco Prisma II EDR Receiver Installation Guide

 

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OL-32414-01 

Key operating parameters of the receiver can be controlled and monitored by an 
ICIM2 or ICIM2-XD, LCI software, ROSA software, CLI commands, or the ICIM 
Web Interface. In addition, some transmitter information can be monitored via the 
receiver. 

Note: Node data is only available for GS7000 Nodes that have a transponder-less 
LCM installed and an interface cable installed between transmitter and LCM. For 
details, see the Cisco Enhanced Digital Return (EDR) C2185 Transmitter for Compact 
Segmentable Nodes A9020x Installation and Operation Guide, part number 62-7023683-01 

. Some transmitter data is available in all cases. 

 

At the transmit end of the system, reverse path RF input signals from each Prisma II 
Transmitter port are routed to an EDR 2:1 Transmitter Module in the Prisma II 
chassis. The transmitter module converts each signal to a baseband digital data 
stream and combines the signals into a serial data stream using time-division 
multiplexing (TDM). The baseband data stream is then converted to an optical signal 
for transmission to the headend or hub EDR receiver. 

The data stream is carried optically over fiber, via an SFP type OPM module, to a 
remote headend or hub location where the optical signal is detected and converted 
back to a serial electrical signal. The data is then descrambled and deframed, and is 
then switched to a digital-to-analog converter (DAC), where the analog spectrum 
that was sampled at the transmit side is reconstructed. The baseband data stream is 
converted to an optical signal for transmission back to the headend or hub. 

The following block diagram shows the transmitter module's internal components. 

 

 

 

The EDR Transmitter module uses the same style housing as Prisma II optical 
receivers and transmitters, except that it uses a double-wide module housing. This 
housing occupies two adjacent slots in the Prisma II or Prisma XD chassis.