Data Sheet

ManualsBrandsCisco ManualsBroadband NodesCompact Nodes 90070 and 90071

Description

The Compact amplifier and node accessories are proven Compact plug-in devices common to all Compact

amplifiers and nodes. They are typically field installed in accordance with system design. The Compact

accessories make it possible to configure a Compact amplifier and node to suit specific requirements. Plug-in

attenuators; equalizers, inverse equalizers and diplex filters provide a highly flexible amplifier and node that is

easily adaptable to various HFC design applications.

The accessories specified in this document include:

· Forward Equalizers

· Reverse Equalizers

· Inverse Equalizers

· Pads (attenuators)

· Attenuators

· Splitters

· Diplex Filters (Compact Amplifiers)

· Diplex Filters (Compact Nodes)

· Ingress Blocking Filter

· Push-On F-Adapter

· Plug-In Test Adapter

· Voltage Lock-Out Module

Forward Equalizers 74100

Reverse Equalizers 74140

Inverse Equalizers 74190

Pads (Attenuators) 77140

Attenuators 77150

Splitters 7704x

Diplex Filters 75110

Amplifiers Only

Diplex Filters 75126

Nodes Only

Ingress Blocking Filter

75127/75128 Nodes Only

RF-Electronics

Compact Amplifier and Node

Accessories

Summary of content (7 pages)

PAGE 1
RF-Electronics Compact Amplifier and Node Accessories Description The Compact amplifier and node accessories are proven Compact plug-in devices common to all Compact amplifiers and nodes. They are typically field installed in accordance with system design. The Compact accessories make it possible to configure a Compact amplifier and node to suit specific requirements.
PAGE 2
Compact Amplifier and Node Accessories Forward Equalizers 74100 Forward equalizers produce a tilted frequency response opposite of that produced by coaxial cable. They are normally used during amplifier or node installation to counteract the tilt produced by coaxial cable, in order to achieve the desired output tilt. An equalizer’s “dB value” indicates the amount of tilt (in dB) that the equalizer produces from 47 MHz to rated upper frequency.
PAGE 3
Compact Amplifier and Node Accessories Inverse Equalizers 74190 Inverse equalizers are cable simulators and produce cable equivalent tilt. An inverse equalizer is used in the AUX socket of the amplifier. The inverse equalizer is normally used during amplifier balancing when an amplifier is short spaced, in order to achieve a flat input signal into the first amplifier stage.
PAGE 4
Compact Amplifier and Node Accessories Splitters 7704x Plug-in Splitters and Directional Couplers are used to route and/or split RF signals in e.g. Compact amplifiers. Jumpers are used to route all signals to a selected port. The modules are available in below configurations. Part Number Type Jumper 0 dB Jumper 0 dB (input) 2-way Splitter 3.5 dB/3.5 dB Directional Coupler 2.0 dB/6.0 dB Directional Coupler 1.0 dB/10.5 dB Directional Coupler 0.6 dB/14 dB Directional Coupler 0.6 dB/18 dB A74069.10 A74089.
PAGE 5
Compact Amplifier and Node Accessories Diplex Filter 75110 Diplex Filter types 75110 for Compact amplifiers, specifications continued* Value 50/70 MHz Part Number A75110.105070 Frequency Range Reverse 5 - 50 Insertion Loss ≤ 0.10 dB @ 5 MHz < 0.70 dB @ 50 MHz Group Delay ≤ 1.0 ns, Df = 1 MHz @ 5 - 42 MHz ≤ 2.0 ns, Df = 1 MHz @ 42 - 46 MHz ≤ 5.0 ns, Df = 1 MHz @ 46 - 50 MHz Forward < 0.70 dB @ 70 MHz ≤ 5.0 ns, Df = 1 MHz @ 70 - 79 MHz 70 - 862 < 0.20 dB @ 862 MHz ≤ 1.
PAGE 6
Compact Amplifier and Node Accessories Ingress Blocking Filter 75127/75128 The Ingress Blocking Filter may be used in Compact nodes to suppress the ingress in the lower end of the reverse band. The filter reduces the ingress load on the reverse transmitter. If no filter is needed the socket is left open. Parameter Frequency Range Pass band Stop band Insertion Loss 1 Return Loss Stop band Loss Group Delay Notes: 1) Part Number 75128.101115 (single) 75128.101520 (dual) 5 - 200 MHz 0 - 11 MHz ≤ 1.
PAGE 7
Compact Amplifier and Node Accessories Voltage Lock-Out Module 75018 All power supplies for remote powering/coax line powering can be equipped with a Voltage Lock-out module to prevent damage in the event of too high current draw. If the input voltage drops below the rated level, the module will automatically shut down the power supply. Description 24 V Lock-Out Module for 24 – 65 V Power Supplies 35 V Lock-Out Module for 35 – 90 V Power Supplies Part Number A75018.0024 A75018.