Cisco Cisco Prisma II EDR Receiver Installation Guide
Chapter 1 Module Introduction
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reverse band spectrum are sampled by an analog-to-digital converter (ADC). A
high-speed serial data stream is constructed by scrambling and framing the data.
This data stream is carried optically over fiber to a remote hub or headend, where
the receiver detects the optical signal and converts it back to a serial electrical signal.
The data is unpacked and sent to a digital-to-analog converter (DAC), which
reconstructs the originally transmitted analog spectrum.
high-speed serial data stream is constructed by scrambling and framing the data.
This data stream is carried optically over fiber to a remote hub or headend, where
the receiver detects the optical signal and converts it back to a serial electrical signal.
The data is unpacked and sent to a digital-to-analog converter (DAC), which
reconstructs the originally transmitted analog spectrum.
This system consists of an optical transmitter module installed in a GainMaker Node,
GS7000 Node, or Compact Node, and an optical receiver module installed in a
Prisma II or Prisma XD chassis at the hub or headend.
GS7000 Node, or Compact Node, and an optical receiver module installed in a
Prisma II or Prisma XD chassis at the hub or headend.
CAUTION:
The EDR receiver is designed to work exclusively with EDR transmitters as
part of the Cisco EDR system. Results with other transmitters are not
guaranteed. Do not install Cisco EDR transmitters in any daisy chain with one
or more Cisco EDR receivers.
The EDR receiver is designed to work exclusively with EDR transmitters as
part of the Cisco EDR system. Results with other transmitters are not
guaranteed. Do not install Cisco EDR transmitters in any daisy chain with one
or more Cisco EDR receivers.
Receiver Description
The receiver module contains two separate optoelectronic receiver circuits. Optical
input is through an OPM connector mounted on the front of the module. The RF
output is through two connectors on the rear of the module.
input is through an OPM connector mounted on the front of the module. The RF
output is through two connectors on the rear of the module.
Each RF output can be attenuated by as much as 10 dB, relative to no attenuation, in
0.5 dB increments. The actual RF output levels of the receiver, attenuated by 20 dB,
can be monitored at a selectable test point on the front panel.
0.5 dB increments. The actual RF output levels of the receiver, attenuated by 20 dB,
can be monitored at a selectable test point on the front panel.
The receiver supports 1:1 and 2:1 configurations in an XD form factor for both
Prisma II (using Host Module) and Prisma XD Chassis. The OPM optical input uses
a dual LC/PC connector and supports all standard reverse bandwidths: 40, 42, 55, 65,
and 85 MHz.
Prisma II (using Host Module) and Prisma XD Chassis. The OPM optical input uses
a dual LC/PC connector and supports all standard reverse bandwidths: 40, 42, 55, 65,
and 85 MHz.
The receiver can be operated in any of the following operating modes:
Single 2:1
Dual 1:1
Dual 2:1
Single 2:1 on Primary + Single 1:1 on Secondary
Single 1:1 on Primary + Single 2:1 on Secondary
Legacy Single 2:1
Legacy Dual 2:1
The factory default operating mode is Dual 2:1; other modes can be selected by the
user. For additional details on these operating modes, see Receiver Operating Modes
(on page 5).
user. For additional details on these operating modes, see Receiver Operating Modes
(on page 5).
Additionally, the receiver can be operated in any of three redundancy modes: