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Cisco GS7000 User Manual
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Appendix B
Enhanced Digital
Return Multiplexing Ap
plications
160
S
y
s
t
em
F
u
n
c
t
i
o
na
l
D
i
ag
r
a
m
s
Single Transmitter Configur
ation
Single Transmit
ter Configuration for
EDR
1:1 Tra
nsmitter Module
The following illustrat
ion shows how the GS7
000 Node functions in E
nhanced
Digital Return con
figuration with one 1:1 EDR tra
nsmitter module instal
led as the
single transmitter.
Important:
This con
figuration requires a 4x1 Reve
rse Configuration Mod
ule (for
6-port OIB), as sho
wn.
179
181
Table of Contents
Default Chapter
3
For Your Safety
3
Notices
4
Table of Contents
5
Important Safety Instructions
9
Electrostatic Discharge
12
Laser Safety
15
Laser Warning Labels
17
General Information
21
Equipment Description
22
Functional Description
24
Theory of Operation
35
Chapter 2 Theory of Operation
37
System Diagrams
37
Forward Path
41
Reverse Path
42
Power Distribution
43
RF Amplifier Module
44
Forward Configuration Module
49
Reverse Configuration Module
54
Optical Interface Board (OIB)
58
Optical Receiver Module
59
Optical Analog Transmitter Modules
63
Optical Amplifier (EDFA) Modules
65
Optical Switch Module
72
Local Control Module
78
Power Supply Module
81
Installation
85
3 Chapter 3 Installation
86
Tools and Test Equipment
86
Node Housing Ports
88
Strand Mounting the Node
89
Pedestal or Wall Mounting the Node
92
Fiber Optic Cable Installation
94
RF Cable Installation
102
Applying Power to the Node
105
Setup and Operation
109
4 Chapter 4 Setup and Operation
110
Tools and Test Equipment
110
System Diagrams
111
Forward Path Setup Procedure
117
Reverse Path Setup Procedure
121
Reconfiguring Forward Signal Routing
123
Reconfiguring Reverse Signal Routing
133
Maintenance
141
5 Chapter 5 Maintenance
142
Opening and Closing the Housing
142
Preventative Maintenance
144
Removing and Replacing Modules
147
Care and Cleaning of Optical Connectors
154
Troubleshooting
159
6 Chapter 6 Troubleshooting
160
No RF Output at Receiver RF Test Point: Optical Power LED on Receiver Module Is off
160
No RF Output: Fiber Optic Light Level Is Good, Receiver Optical Power LED Is on
162
Poor C/N Performance
164
Poor Distortion Performance
166
Poor Frequency Response
168
No RF Output from Reverse Receiver
170
Customer Support Information
171
Appendix A Technical Information
173
Linear Tilt Chart
174
Forward Equalizer Chart
176
Appendix B Enhanced Digital Return Multiplexing Applications
178
This Appendix Explains the Installation and Application of the Cisco
179
In this Appendix
179
Enhanced Digital Return System Overview
179
System Block Diagram
184
Enhanced Digital Return (EDR) System Installation
197
Transmitter Module Setup Procedure
206
Reverse Balancing the Node with EDR
209
Troubleshooting
212
Appendix C Expanded Fiber Tray
217
Expanded Fiber Tray Overview
218
Expanded Fiber Tray Installation
220
Fiber Management System
223
Configuration Examples
229
Other manuals for Cisco GS7000
Installation And Configuration Guide
162 pages
Troubleshooting
12 pages
Installation Instructions
12 pages
Maintenance
14 pages
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Cisco GS7000 Specifications
General
Brand
Cisco
Model
GS7000
Category
Network Hardware
Language
English
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