Cisco Cisco Compact EGC Segmentable Node A90200 Data Sheet
Optoelectronics
Compact Outdoor Node Model 90275
Description
The Compact Model 90275 node has been
specially designed for outdoor use and surge
protection is provided for all input and output ports.
The flexible Model 90275 “two-in-one” node can
serve as a trunk or distribution node to feed
architectures of various densities and addresses
divergent system needs. Available with two high
level RF output ports, it is ideal for delivering video
as well as high-speed data services over advanced
hybrid fiber coax (HFC) networks. Its modular
design allows for segmentation in the reverse path
and independent redundancy for both the forward and reverse path in a reliable, cost-effective package.
Forward redundancy can be implemented via use of a second optical receiver module. The node’s reverse
path is equally flexible and FP, DFB and CWDM optical transmitters are available. The node provides for
reverse segmentation through the addition of a second transmitter and each transmitter is dedicated to the
reverse traffic from the two individual node outputs. Alternatively the second transmitter can be used in a
redundant configuration to help ensure continued service in the event of transmitter failure.
The unit’s high output level range makes it ideally suited for system upgrades to help operators push fiber
deeper into the network to increase bandwidth in support of interactive applications. The node can serve at
different output levels and multiple node sizes in an HFC-network and can be connected directly to the
subscriber’s tap network. The dual outputs with enhanced intermodulation performance and flatness enables
operators to cascade more amplifiers at the end of the system. The node features a microprocessor controlled
output level control. This ensures an output level that is independent of changing optical input levels e.g., by
redundant switching, additional fiber splices, and other fiber handling that affects the optical attenuation.
Unlike conventional designs, this automatic gain control (AGC) operates without pilot tones.
The node shares common plug-in accessories with other nodes and amplifiers in the Compact family, and
utilizes PG11 RF ports or 5/8” using provided adapters. A directional coupler RF test point is provided at the
forward output and reverse transmitter, allowing for accurate signal level measurement. Surge protection is
provided for the RF ports, and the node is equipped with a double gasket that includes an RF and a water-
dust gasket. All Compact nodes can be configured with a Scientific Atlanta status monitoring transponder to
enable remote monitoring of critical node parameters and remote control of the built-in 3-state reverse switch.
By switching to detection mode (-6 dB) it can be observed from which part of the network the ingress derives.
Once a failure has been located, the defective network segment may be isolated until the failure has been
eliminated and the remaining part of the reverse path is ensured normal traffic.
specially designed for outdoor use and surge
protection is provided for all input and output ports.
The flexible Model 90275 “two-in-one” node can
serve as a trunk or distribution node to feed
architectures of various densities and addresses
divergent system needs. Available with two high
level RF output ports, it is ideal for delivering video
as well as high-speed data services over advanced
hybrid fiber coax (HFC) networks. Its modular
design allows for segmentation in the reverse path
and independent redundancy for both the forward and reverse path in a reliable, cost-effective package.
Forward redundancy can be implemented via use of a second optical receiver module. The node’s reverse
path is equally flexible and FP, DFB and CWDM optical transmitters are available. The node provides for
reverse segmentation through the addition of a second transmitter and each transmitter is dedicated to the
reverse traffic from the two individual node outputs. Alternatively the second transmitter can be used in a
redundant configuration to help ensure continued service in the event of transmitter failure.
The unit’s high output level range makes it ideally suited for system upgrades to help operators push fiber
deeper into the network to increase bandwidth in support of interactive applications. The node can serve at
different output levels and multiple node sizes in an HFC-network and can be connected directly to the
subscriber’s tap network. The dual outputs with enhanced intermodulation performance and flatness enables
operators to cascade more amplifiers at the end of the system. The node features a microprocessor controlled
output level control. This ensures an output level that is independent of changing optical input levels e.g., by
redundant switching, additional fiber splices, and other fiber handling that affects the optical attenuation.
Unlike conventional designs, this automatic gain control (AGC) operates without pilot tones.
The node shares common plug-in accessories with other nodes and amplifiers in the Compact family, and
utilizes PG11 RF ports or 5/8” using provided adapters. A directional coupler RF test point is provided at the
forward output and reverse transmitter, allowing for accurate signal level measurement. Surge protection is
provided for the RF ports, and the node is equipped with a double gasket that includes an RF and a water-
dust gasket. All Compact nodes can be configured with a Scientific Atlanta status monitoring transponder to
enable remote monitoring of critical node parameters and remote control of the built-in 3-state reverse switch.
By switching to detection mode (-6 dB) it can be observed from which part of the network the ingress derives.
Once a failure has been located, the defective network segment may be isolated until the failure has been
eliminated and the remaining part of the reverse path is ensured normal traffic.
Features
• 862 MHz node optimized for trunk or distribution applications to feed architectures of various densities
• Extended output level range
• Extended output level range
• GaAs-FET technology for superior performance
• Full
two-way
communication
• Remarkable CTB/CSO values
• Redundancy for the forward and/or reverse path
• Segmentation of upstream signals with two (2) transmitters
• Optional status monitoring and control
• Optional status monitoring and control