Cisco GainStar Mini Node RF Module and Pedestal Housing

Cisco GainStar Mini Node RF Module and Pedestal Housing
Cisco GainStar Mini Node Modules
and Pedestal Housings
Installation and Operation Guide
For Your Safety
Explanation of Warning and Caution Icons
Avoid personal injury and product damage! Do not proceed beyond any
symbol until you fully understand the indicated conditions.
The following warning and caution icons alert you to important information about
the safe operation of this product:
You may find this symbol in the document that accompanies this
product. This symbol indicates important operating or maintenance
instructions.
You may find this symbol affixed to the product. This symbol indicates
a live terminal where a dangerous voltage may be present; the tip of the flash
points to the terminal device.
You may find this symbol affixed to the product. This symbol indicates
a protective ground terminal.
You may find this symbol affixed to the product. This symbol indicates
a chassis terminal (normally used for equipotential bonding).
You may find this symbol affixed to the product. This symbol warns of
a potentially hot surface.
You may find this symbol affixed to the product and in this document.
This symbol indicates an infrared laser that transmits intensity-modulated
light and emits invisible laser radiation or an LED that transmits intensitymodulated light.
Important
Please read this entire guide. If this guide provides installation or operation
instructions, give particular attention to all safety statements included in this guide.
Notices
Trademark Acknowledgments
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its
affiliates in the U.S. and other countries. A listing of Cisco's trademarks can be found
at www.cisco.com/go/trademarks.
Third party trademarks mentioned are the property of their respective owners.
The use of the word partner does not imply a partnership relationship between Cisco
and any other company. (1009R)
Publication Disclaimer
Cisco Systems, Inc. assumes no responsibility for errors or omissions that may
appear in this publication. We reserve the right to change this publication at any
time without notice. This document is not to be construed as conferring by
implication, estoppel, or otherwise any license or right under any copyright or
patent, whether or not the use of any information in this document employs an
invention claimed in any existing or later issued patent.
Copyright
© 2010-2011 Cisco and/or its affiliates. All rights reserved.
Information in this publication is subject to change without notice. No part of this
publication may be reproduced or transmitted in any form, by photocopy, microfilm,
xerography, or any other means, or incorporated into any information retrieval
system, electronic or mechanical, for any purpose, without the express permission of
Cisco Systems, Inc.
Contents
Important Safety Instructions .................................................................................................................... vi
Chapter 1
Introduction
Description ............................................................................................................................................... 1-3
GainStar Mini Node Characteristics........................................................................... 1-3
Power Supply ................................................................................................................ 1-3
Input and Output Ports ................................................................................................ 1-3
Configuration ................................................................................................................ 1-4
Test Points ...................................................................................................................... 1-4
AC Shunt Power Directors .......................................................................................... 1-4
GainStar Node Ordering Matrix ................................................................................. 1-5
Accessories ............................................................................................................................................... 1-6
Customer Installable Accessories for GainStar Mini Node..................................... 1-6
Illustrations .............................................................................................................................................. 1-7
GainStar Mini Node Test Points ................................................................................. 1-7
GainStar Mini Node Accessories ................................................................................ 1-8
Block Diagrams ....................................................................................................................................... 1-9
GainStar Mainboard ..................................................................................................... 1-9
Chapter 2
Installation and Configuration
Before You begin ..................................................................................................................................... 2-2
Required Tools .............................................................................................................. 2-2
Torque Specifications ................................................................................................... 2-2
Mini Node Module Cover............................................................................................ 2-3
Mini Node RF Module ................................................................................................. 2-3
Housing Dimensions .................................................................................................... 2-4
Opening the Mini Node Housing ......................................................................................................... 2-5
To Open the Mini Node Housing ............................................................................... 2-5
Attaching the Coaxial Connectors ........................................................................................................ 2-6
To Prepare the LE Module for the connector installation ....................................... 2-6
To Connect the RF Connector Pin .............................................................................. 2-8
Installing the Housing ............................................................................................................................ 2-9
To Install the Housing on a Strand (Aerial) .............................................................. 2-9
To Install the Housing in a Pedestal ......................................................................... 2-10
Continued on next page
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iii
Contents, Continued
Installing the Accessories ..................................................................................................................... 2-11
To Install the Attenuator Pads .................................................................................. 2-11
To Install the Equalizers ............................................................................................. 2-12
To Set Up RF Output Port .......................................................................................... 2-13
System Power ........................................................................................................................................ 2-14
System Power (44 to 90 VAC) ................................................................................... 2-14
AC Shunt .................................................................................................... 2-15
System Power (100 to 240 VAC) ............................................................................... 2-16
Removing and Reinstalling the Optical Modules ............................................................................ 2-17
To Remove or Reinstall the Optical Transmitter .................................................... 2-17
Connecting the Fiber Optical Service Cable to the Mini Node....................................................... 2-19
Warring: Radiation ..................................................................................................... 2-19
Fiber Cable Handing .................................................................................................. 2-19
Fiber Connectors and Fiber Optical Service Cable ................................................. 2-20
To Attach the Service Cable Connector ................................................................... 2-20
Attaching the Fiber Connectors .......................................................................................................... 2-21
To Attach the Fiber Connectors ................................................................................ 2-21
Installing the WDM Module................................................................................................................ 2-23
To Install the WDM Module...................................................................................... 2-23
Closing the Mini Node Housing ......................................................................................................... 2-26
To Close the Mini Node Housing ............................................................................. 2-26
Chapter 3
Balancing and Setup
Preparing for Forward Path Balancing ................................................................................................ 3-2
Before You Begin ........................................................................................................... 3-2
Balancing the Forward Path .................................................................................................................. 3-3
Introduction ................................................................................................................... 3-3
To test the Forward Input Optical Power .................................................................. 3-3
To Determine the Output Tilt...................................................................................... 3-4
To Set Up the Output Tilt ............................................................................................ 3-5
To Set Up the Forward Output Level......................................................................... 3-8
Balancing the Reverse Path.................................................................................................................... 3-9
To Set Up the Reverse Input Level ............................................................................. 3-9
To Set Up the Equalizer Value for Reverse Path .................................................... 3-10
Continued on next page
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4035009 Rev B
Contents, Continued
Setting OMI for Reverse Path Transmitter ........................................................................................ 3-14
To Set Up the OMI for Reverse Path Transmitter .................................................. 3-14
Chapter 4
Trouble Shooting
Equipment ................................................................................................................................................ 4-2
Low RF Output ........................................................................................................................................ 4-3
No Forward RF Signal ............................................................................................................................ 4-4
Low or Degraded Forward RF Signal .................................................................................................. 4-5
No Reverse RF Signal ............................................................................................................................. 4-6
Low or Degraded Reverse RF Signal ................................................................................................... 4-7
Troubleshooting Carrier-to-Noise Problems....................................................................................... 4-9
Miscellaneous Problems ....................................................................................................................... 4-10
No Power Supply .................................................................................................................................. 4-11
Cleaning Optical Connectors............................................................................................................... 4-12
Recommended Equipment ........................................................................................ 4-12
Tips for Optimal Fiber-Optic Connector Performance .......................................... 4-12
To Clean Optical Connectors..................................................................................... 4-13
Fiber Optic Connector Cleaning Instructions ......................................................... 4-13
Chapter 5
Customer Support Information
Obtaining Product Support ................................................................................................................... 5-2
Chapter 6
Technical Information
Forward Linear Equalizer ...................................................................................................................... 6-2
Reverse Cable Equalizer......................................................................................................................... 6-4
GainStar Mini Node Accessories Part Numbers ................................................................................ 6-6
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v
Important Safety Instructions
Read and Retain Instructions
Carefully read all safety and operating instructions before operating this equipment,
and retain them for future reference.
Follow Instructions and Heed Warnings
Follow all operating and use instructions. Pay attention to all warnings and cautions
in the operating instructions, as well as those that are affixed to this equipment.
Terminology
The terms defined below are used in this document. The definitions given are based
on those found in safety standards.
Service Personnel-The term service personnel applies to trained and qualified
individuals who are allowed to install, replace, or service electrical equipment. The
service personnel are expected to use their experience and technical skills to avoid
possible injury to themselves and others due to hazards that exist in service and
restricted areas.
User and Operator-The terms user and operator apply to persons other than service
personnel.
Ground(ing) and Earth(ing)-The terms ground(ing) and earth(ing) are synonymous.
This document uses ground(ing) for clarity, but it can be interpreted as having the
same meaning as earth(ing).
Electric Shock Hazard
This equipment meets applicable safety standards. Refer to this equipment’s data
sheet for details about regulatory compliance approvals.
WARNING:
Avoid electric shock! Opening or removing the equipment cover may expose
you to dangerous voltages. Refer all servicing to qualified service personnel
only.
Electric shock can cause personal injury or even death. Avoid direct contact with
dangerous voltages at all times.
Know the following safety warnings and guidelines:
 Only qualified service personnel are allowed to perform equipment installation or
replacement.
 Only qualified service personnel are allowed to remove equipment covers and
access any of the components inside the chassis.
Continued on next page
vi
4035009 Rev B
Important Safety Instructions, Continued
Equipment Placement
WARNING:
Avoid personal injury and damage to this equipment. An unstable mounting
surface may cause this equipment to fall.
To protect against equipment damage or injury to personnel, comply with the
following:
Install this equipment in a restricted access location (access restricted to service
personnel).
Make sure the mounting surface or rack is stable and can support the size and
weight of this equipment.
Strand (Aerial) Installation
CAUTION:
Be aware of the size and weight of strand-mounted equipment during the
installation operation.
Ensure that the strand can safely support the equipment’s weight.
Pedestal Installation
WARNING:
Avoid possibility of personal injury. Ensure proper handling/lifting techniques
are employed when working in confined spaces with heavy equipment.
Ensure this equipment is securely fastened to the mounting surface or rack where
necessary to protect against damage due to any disturbance and subsequent fall.
Ensure the mounting surface or rack is appropriately anchored according to
manufacturer’s specifications.
Ensure the installation site meets the ventilation requirements given in the
equipment’s data sheet to avoid the possibility of equipment overheating.
Ensure the installation site and operating environment is compatible with the
equipment’s International Protection (IP) rating specified in the equipment’s data
sheet.
Connecting to Utility AC Power
Important: If this equipment is a Class I equipment, it must be grounded.
If this equipment plugs into an outlet, the outlet must be near this equipment, and
must be easily accessible.
Connect this equipment only to the power sources that are identified on the
equipment-rating label, which is normally located close to the power inlet
connector(s).
Continued on next page
4035009 Rev B
vii
Important Safety Instructions, Continued
 This equipment may have two power sources. Be sure to disconnect all power
sources before working on this equipment.
 If this equipment does not have a main power switch, the power cord connector
serves as the disconnect device.
 Always pull on the plug or the connector to disconnect a cable. Never pull on the
cable itself.
Connection to Network Power Sources
Refer to this equipment’s specific installation instructions in this manual or in
companion manuals in this series for connection to network ferro-resonant AC
power sources.
AC Power Shunts
AC power shunts may be provided with this equipment.
Important: The power shunts (where provided) must be removed before installing
modules into a powered housing. With the shunts removed, power surge to the
components and RF-connectors is reduced.
CAUTION:
RF connectors and housing seizure assemblies can be damaged if shunts are not
removed from the equipment before installing or removing modules from the
housing.
Grounding (Utility AC Powered Equipment in Pedestals, Service Closets, etc.)
This section provides instructions for verifying that the equipment is properly
grounded.
Safety Plugs(USA Only)
This equipment is equipped with either a 3-terminal (grounding-type) safety plug or
a 2-terminal (polarized) safety plug. The wide blade or the third terminal is provided
for safety. Do not defeat the safety purpose of the grounding-type or polarized safety
plug.
To properly ground this equipment, follow these safety guidelines:
Grounding-Type Plug
For a 3-terminal plug (one terminal on this plug is a protective grounding pin), insert
the plug into a grounded mains, 3-terminal outlet.
Note: This plug fits only one way. If this plug cannot be fully inserted into the outlet,
contact an electrician to replace the obsolete 3-terminal outlet.
Polarized Plug
For a 2-terminal plug (a polarized plug with one wide blade and one narrow blade),
insert the plug into a polarized mains, 2-terminal outlet in which one socket is wider
than the other.
Continued on next page
viii
4035009 Rev B
Important Safety Instructions, Continued
Note:If this plug cannot be fully inserted into the outlet, try reversing the plug.
If the plug still fails to fit, contact an electrician to replace the obsolete 2-terminal
outlet.
Grounding Terminal
If this equipment is equipped with an external grounding terminal, attach one end of
an 18-gauge wire (or larger) to the grounding terminal; then, attach the other end of
the wire to a ground, such as a grounded equipment rack.
Safety Plugs (European Union)
Class I Mains Powered Equipment
Provided with a 3-terminal AC inlet and requires connection to a 3-terminal mains
supply outlet via a 3-terminal power cord for proper connection to the protective
ground.
Note: The equipotential bonding terminal provided on some equipment is not
designed to function as a protective ground connection.
Class II Mains Powered Equipment
Provided with a 2-terminal AC inlet that may be connected by a 2-terminal power
cord to the mains supply outlet. No connection to the protective ground is required
as this class of equipment is provided with double or reinforced and/or
supplementary insulation in addition to the basic insulation provided in Class I
equipment.
Note: Class II equipment, which is subject to EN 50083-1, is provided with a
chassis mounted equipotential bonding terminal. See the section titled
Equipotential Bonding for connection instructions.
Equipotential Bonding
If this equipment is equipped with an external chassis terminal marked with the IEC
60417-5020 chassis icon ( ), the installer should refer to CENELEC standard EN
50083-1 or IEC standard IEC 60728-11 for correct equipotential bonding connection
instructions.
Continued on next page
4035009 Rev B
ix
Important Safety Instructions, Continued
General Servicing Precautions
WARNING:
Avoid electric shock! Opening or removing the equipment cover may expose
you to dangerous voltages. Refer all servicing to qualified service personnel
only.
CAUTION:
These servicing precautions are for the guidance of qualified service personnel
only. To reduce the risk of electric shock, do not perform any servicing other
than contained in the operating instructions unless you are qualified to do so.
Refer all servicing to qualified service personnel.
Be aware of the following general precautions and guidelines:
 Servicing - Servicing is required when this equipment has been damaged in any
way, such as power supply cord or plug is damaged, liquid has been spilled or
objects have fallen into this equipment, this equipment has been exposed to rain or
moisture, does not operate normally, or has been dropped.
 Wristwatch and Jewelry - For personal safety and to avoid damage of this
equipment during service and repair, do not wear electrically conducting objects
such as a wristwatch or jewelry.
 Lightning - Do not work on this equipment, or connect or disconnect cables,
during periods of lightning.
 Labels - Do not remove any warning labels. Replace damaged or illegible warning
labels with new ones.
 Covers - Do not open the cover of this equipment and attempt service unless
instructed to do so in the instructions. Refer all servicing to qualified service
personnel only.
 Moisture - Do not allow moisture to enter this equipment.
 Cleaning - Use a damp cloth for cleaning.
 Safety Checks - After service, assemble this equipment and perform safety checks
to ensure it is safe to use before putting it back into operation.
Electrostatic Discharge
Electrostatic discharge (ESD) results from the static electricity buildup on the human
body and other objects. This static discharge can degrade components and cause
failures.
Take the following precautions against electrostatic discharge:
 Use an anti-static bench mat and a wrist strap or ankle strap designed to safely
ground ESD potentials through a resistive element.
 Keep components in their anti-static packaging until installed.
 Avoid touching electronic components when installing a module.
Continued on next page
x
4035009 Rev B
Important Safety Instructions, Continued
Fuse Replacement




To replace a fuse, comply with the following:
Disconnect the power before changing fuses.
Identify and clear the condition that caused the original fuse failure.
Always use a fuse of the correct type and rating. The correct type and rating are
indicated on this equipment.
Modifications
This equipment has been designed and tested to comply with applicable safety, laser
safety, and EMC regulations, codes, and standards to ensure safe operation in its
intended environment. Refer to this equipment’s data sheet for details about
regulatory compliance approvals.
Do not make modifications to this equipment. Any changes or modifications could
void the user’s authority to operate this equipment.
Modifications have the potential to degrade the level of protection built into this
equipment, putting people and property at risk of injury or damage. Those persons
making any modifications expose themselves to the penalties arising from proven
non-compliance with regulatory requirements and to civil litigation for
compensation in respect of consequential damages or injury.
Accessories
Use only attachments or accessories specified by the manufacturer.
4035009 Rev B
xi
Laser Safety
Introduction
This equipment contains an infrared laser that transmits intensity-modulated light
and emits invisible radiation.
Warning: Radiation
 Do not apply power to this equipment if the fiber is unmated or unterminated.
 Do not stare into an unmated fiber or at any mirror-like surface that could reflect
light emitted from an unterminated fiber.
 Do not view an activated fiber with optical instruments (for example, eye loupes,
magnifiers, microscopes).
 Use safety-approved optical fiber cable to maintain compliance with applicable
laser safety requirements.
Warning: Fiber Optic Cables
Continued on next page
xii
4035009 Rev B
Laser Safety, Continued
Maximum Laser Power
The maximum laser power that can be produced through this product, due to
misadjustment or component failure, is 8.8 mW.
Location of Laser Labels
The following illustration displays the location of warning labels on this equipment.
Transmitter Example
4035009 Rev B
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xiv
4035009 Rev B
Chapter 1
Introduction
Overview
The GainStar Mini Node Platform addresses the needs of today's broadband networks.
All GainStar Mini Nodes provide superior performance and reliability combined with
a user-friendly layout.
This chapter introduces you to the GainStar Mini Node and describes its main
components, configuration options, and accessories.
Purpose
This guide provides instructions for installing, configuring, setting up, and
troubleshooting the GainStar Mini Node.
Who Should Use This Document
This document is intended for authorized service personnel who have experience
working with similar equipment. The service personnel should have appropriate
background and knowledge to complete the procedures described in this document.
Qualified Personnel
CAUTION:
Allow only qualified and skilled personnel to install, operate, maintain, and
service this product. Otherwise, personal injury or equipment damage may occur.
Only appropriately qualified and skilled personnel should attempt to install, operate,
maintain, and service this product.
Scope
This guide discusses the following topics.
 Description of the GainStar Mini Node
 Installing and Configuring the Mini Node
 Balancing and Setup of Forward and Reverse Signal Paths
 Troubleshooting the Mini Node
 Customer Support Information
 Description of Configuration Options and Accessories
Document Version
This is the Rev B of this document. The statuses of former releases are listed in the
following table.
Document Release
Cisco GainStar Mini Node Modules and Pedestal Housings
Installation and Operation Guide
Version
Status
REV A
Published
Continued on next page
4035009 Rev B
Introduction
1-1
Overview, Continued
In This Chapter
Topic
1-2
See Page
Description
1-3
Accessories
1-6
Illustrations
1-7
Block Diagrams
1-9
Introduction
4035009 Rev B
Description
The GainStar Mini Node is available in the following forward bandwidth.
 1 GHz/862 MHz
The GainStar Mini Node is available in the following reverse/forward path splits.
 42/54 MHz
 65/87 MHz
All 1 GHz GainStar Mini Nodes contain a base and a lid. The base houses the RF
mainboard, the power supply, and the Mini Node cover.
The following chapters provide a detail description of GainStar Mini Node
components.
GainStar Mini Node Characteristics
The GainStar Mini Node has the following characteristics.
 Can be set up for 862 MHz or 1 GHz performance
 Selectable single or dual outputs with an onboard signal director
 LED display for optical input power
 AGC optical input range of –4 to +2 dBm
 Standard plug-in attenuators can be used to adjust the gain and equalization
 Both FP and DFB transmitters available
 Surge-resistant circuitry ensures resistance to high voltage transients (6kV)
 Thermal RF control minimizes gain movement over temperature
 10 A current capacity (steady state) and 15 A surge survivability
 Outdoor housing is IP68 dustproof and watertight
 Strand and pedestal mount housing configurations are available
 All ports accept PG11 connectors or 5/8” connectors using provided adapters
 RoHS 6 / 6 compliant
Power Supply
The available input power voltages for the GainStar Mini Node are 44 VAC to 90 VAC
or 100 VAC to 240 VAC.
Input and Output Ports
This Mini Node has one optical input port and one or two RF output ports. The
number of output ports is determined by the signal director.
Continued on next page
4035009 Rev B
Introduction
1-3
Description, Continued
Configuration
All GainStar Mini Nodes are configured with the following items:
 Forward Interstage Attenuator
 Forward Output Equalizer with Attenuator
 Forward Output Attenuators
 Signal Directors
 Reverse Amplifier module (Not included in forward only configuration)
 Reverse Equalizer with Attenuator (Not included in forward only configuration)
Test Points
There are two RF test points on the GainStar Mini Node.
AC Shunt Power Directors
The GainStar Mini Node has two AC shunt power directors located near the ports of
the Mini Node. These power directors are used to direct AC current to and from the
Mini Node output ports.
Continued on next page
1-4
Introduction
4035009 Rev B
Description, Continued
GainStar Mini Node Ordering Matrix
For the latest available Mini Node ordering information, contact your customer service
representative.
S
1. Product Family
14. (Reserved for Future Use)
S = GainStar
0 = None
Family
2. Product Type
13. Transmitter Options
00 = No Transmitter
01 = 1310 nm FP
02 = 1310 nm DFB
1 = Node
3 = Mini Node
5 = Amplifier
7 = Line Extender
12. Connector Options
0 = No
3. Gain
Configuration
1 = Standard Output
1 = FC/APC
2 = SC/APC
4. Port Configuration
1 = Single port / 2 port
w/ splitter
2 = Dual port / 4 port
w/splitter
11. Housing Configuration
1 = Strand Mount
2 = Pedestal
10. Power Supply Configuration
(First Digit) - Power Supply
5. Bandwidth
8 = 5-862 MHz
G = 5-1000 MHz
1 = Line Power Supply 44 to 90 VAC
2 = Mains Power Supply 100 to 240 VAC
(Second Digit) - Line cord type
0 = No
1 = US cord
2 = China cord
3 = Europe cord
6. Forward/Reverse Split
2 = 42/54 Split
5 = 55/70 Split
6 = 65/87 Split
9. Transponder
0 = w/o Transponder
7. Reverse Amp
0 = No Rev. Module
3 = Rev. Module w/ 20dB
4035009 Rev B
8. Accessories
0 = Standard Configuration
Introduction
1-5
Accessories
Customer Installable Accessories for GainStar Mini Node
The GainStar Mini Node is equipped to work with the following accessories.
The following table lists the customer installable accessories and their part numbers.
Note: All GainStar Mini Node accessories are unique to the GainStar Mini Node
Platform product line.
Accessory
Part Number
Quantity
Attenuator pads
4036021 (0 dB)
through 4036041 (20
dB), 0 dB through 20
dB in 1 dB increments
1 required for reverse input
(Not included in forward only
configuration)
Forward Linear
Equalizer
1 GHz
4034459, 0 to 4 dB
1 required for forward output; 1
pad also required and plugged
into EQ
Forward Linear
Equalizer
862 MHz
4034456, 0 to 4 dB
Reverse Cable Equalizer
65 MHz
4034462, 0 to 5 dB
Reverse Cable Equalizer
42 MHz
4034465, 0 to 5 dB
4034466, 6 to 10 dB
0 to 5 dB EQ (4034462 or
4034465) and 0 dB Pad (4036021)
are provided—Other values
must be ordered.
(Not included in forward only
configuration)
GainStar mininode
4040809
Fiber bulkhead,screw,Solid line
4034460, 5 to 9 dB
4034461, 10 to 14 dB
1 required for reverse output
(Not included in forward only
configuration)
4034457, 5 to 9 dB
4034458, 10 to 14 dB
4034463, 6 to 10 dB
Upgrade Kit(order)
clip
Note: When upgrading from forward only to a forward and reverse, the Reverse
Transmitter, Reverse Amplifier Module, Reverse Equalizer with PAD, Reverse input
PAD, and Reverse output PAD accessories are required.
1-6
Introduction
4035009 Rev B
Illustrations
GainStar Mini Node Test Points
The following diagram shows the Mini Node test points.
Note:
 Test point shown is -20 dB/-16.5 dB (with signal director) for Forward output RF
test point.
 Test point shown is -20 dB/-23.5 dB (with signal director) for Reverse input RF test
point.
 OMI test point.
Continued on next page
4035009 Rev B
Introduction
1-7
Illustrations, Continued
GainStar Mini Node Accessories
The following diagram shows the accessory locations for the Mini Node module.
Continued on next page
1-8
Introduction
4035009 Rev B
Block Diagrams
GainStar Mainboard
The following block diagram shows the forward and reverse path of the GainStar Mini
Node.
Continued on next page
4035009 Rev B
Introduction
1-9
1-10
Introduction
4035009 Rev B
Chapter 2
Installation and Configuration
Overview
Introduction
This chapter provides instructions for installing and configuring the Gain Star Mini
Node in your cable system.
In This Chapter
Topic
4035009 Rev B
See Page
Before You Begin
2-2
Opening the Mini Node Housing
2-5
Attaching the Coaxial Connectors
2-6
Installing the Housing
2-9
Installing the Accessories
2-11
System Power
2-14
Removing and Reinstalling the Optical Modules
2-17
Connecting the Fiber Optical Service Cable to the Mini Node
2-19
Attaching the Fiber Connectors
2-21
Installing the WDM Module
2-23
Closing the Mini Node Housing
2-26
Installation and Configuration
2-1
Before You Begin
The procedures in this chapter assume that you have completed the following:
 Prepared the installation site
 Located the coaxial cable, with or without the pin-type coaxial connectors
mounted on the cable
Required Tools
Before you start, make sure that you have the following tools:
 Torque wrench with a 1/2-inch socket
 Flat-blade screwdriver and Philips screw driver
 Heavy-duty wire cutters or snips
 Torque wrench set
Torque Specifications
The following table gives the torque specifications for the Mini Node.
Fastener
Torque Specification
Housing closure bolts
6.8 Nm to 9.0 Nm
Housing grounding screw
0.9 Nm to 1.0 Nm
Housing plugs test point
port plugs
6.8 Nm to 9.0 Nm
RF PG11 to 5/8” adapter
12.0 Nm to 16.0 Nm
Strand clamp mounting
bracket bolts
6.8 Nm to 9.0 Nm
RF F-Cable Connector
Per manufacturer
instructions
Hard Line Cable Connector
Per manufacturer
instructions
Bulkhead screw
0.3 Nm to 0.5 Nm
Illustration
Continued on next page
2-2
Installation and Configuration
4035009 Rev B
Before You Begin, Continued
Mini Node Module Cover
The Gain Star Mini Node module has an aluminum cover attached. To perform
normal field maintenance, the cover will not have to be removed.
Mini Node RF Module
The following two diagrams display the two types of Gain Star Mini Node RF
Module:42/54 MHz split and 65/87 MHz split.
Note: This document is applicable for both splits while using the diagrams of 42/54
MHz split to display the installation and configuration in a general view.
42/54 MHz split RF Module
65/87 MHz split RF Module
Continued on next page
4035009 Rev B
Installation and Configuration
2-3
Before You Begin, Continued
Housing Dimensions
The diagram below shows the dimensions, in inches and millimeters, of the Mini
Node housing with a standard lid. Use these measurements to calculate clearance
requirements for your installation.
9.8 in / 250 mm
7.8 in / 197 mm
15.1 in / 384 mm
9.8 in / 249 mm
3.5 in / 90 mm
2-4
Installation and Configuration
4035009 Rev B
Opening the Mini Node Housing
To Open the Mini Node Housing
Complete the following steps to open the Mini Node housing.
Important: Before unscrewing the housing bolts, make sure the removable hinge
locking pin is in place. The locking pin prevents separation of the lid from the base.
1.
Loosen the housing closure bolts on the housing lid.
2.
Open the housing.
Note: The closure bolts should remain attached to the housing.
4035009 Rev B
Installation and Configuration
2-5
Attaching the Coaxial Connectors
To Prepre the Mini Node Module for Connector Installation
Complete the following steps to trim longer pins.
1
Loosen each RF connector bolt.
Continued on next page
2-6
Installation and Configuration
4035009 Rev B
Attaching the Coaxial Connectors, Continued
2
The Gain Star Mini Node requires pin-type connectors for all RF connections.
The 5/8’’ RF connector will be needed for pins extending from 23 mm to 25
mm (0.9 in. to 1.0 in). The PG11 RF connector will be needed for pins
extending 19 mm to 21 mm (0.7 in. to 0.8 in). You must trim longer pins
before inserting them into the housing.
If the center conductor pin extends past the STRIP line on the housing, trim
the pin flush to the STRIP line. The following diagram shows a visual guide of
the center conductor trim length.
Continued on next page
4035009 Rev B
Installation and Configuration
2-7
Attaching the Coaxial Connectors, Continued
To Connect the RF Connector Pin
Complete the following steps to connect the RF connector pin to the Mini Node
housing.
2-8
1
Begin this procedure with the Mini Node housing open. Refer to Opening the
Mini Node Housing (on page 2-5).
2
If the center conductor pin extends beyond the STRIP line on the housing,
trim the pin with heavy-duty wire cutters.
3
If the RF connector is PG11, go to Step 4. If the RF connector is 5/8”, screw the
RF cable connector adapter onto the housing before proceeding to Step 4.
4
Insert the appropriate RF connector into the housing at the desired RF port.
Tighten the connector nut according to manufacturer specifications.
5
Tighten the RF F-Cable connector bolt from 0.9 Nm to 1.0 Nm.
6
Repeat steps 2 through 4 for each RF port used.
7
Proceed to Installing the Housing (on page 2-9).
Installation and Configuration
4035009 Rev B
Installing the Housing
To Install the Housing on a Strand (Aerial)
Complete the following steps to install the housing on a strand (aerial). The housing
does not need to be opened for strand installation.
Important: The minimum strand diameter should be 5/16 inch.
1
Loosen the strand clamp bolts.
2
Lift the housing into proper position on the strand.
3
Slip the strand clamps over the strand and finger-tighten the clamp bolts. This
allows additional movement of the housing as needed.
4
Move the housing as needed to install the coaxial cable and connectors. See
the diagram below.
5
Using a ½-inch torque wrench, tighten the strand clamp bolts from 6.8 Nm to
9.0 Nm. Make sure there is good mechanical contact between the strand and
the housing.
Note: A slight tilt of the face of the housing is normal. Cable tension will
cause the housing to hang more closely to vertical.
6
Connect the coaxial cable to the pin connector according to connector
manufacturer specifications.
7
Proceed to Installing the Accessories (on page 2-11).
Continued on next page
4035009 Rev B
Installation and Configuration
2-9
Installing the Housing, Continued
To Install the Housing in a Pedestal
Complete the following steps to install the housing in a pedestal.
1
Drill two 3/8” holes in the mounting plate or mounting bracket with 127 mm or
215.9 mm distance. The thickness of the metal plate is 10 to 15 mm.
2
Lift the housing to proper position on the wall or box.
3
Align the pedestal mounting holes on the bottom of the housing with the two
holes drilled in the metal plate and insert the bolts through the mounting plate
into the two threaded mounting holes.
4
Using a ½-inch torque wrench, tighten the Pedestal clamp bolts from 6.8 Nm to
9.0 Nm.
Note: A slight tilt of the face of the housing is normal. Cable tension will cause
the housing to hang more closely to vertical.
2-10
5
Connect the coaxial cable to the pin connector according to connector
manufacturer specifications.
6
Proceed to Installing the Accessories (on page 2-11).
Installation and Configuration
4035009 Rev B
Installing the Accessories
To Install the Attenuator Pads
Complete the following steps to install the attenuator pads in the Mini Node.
Note: For best results, follow this installation procedure exactly.
1
Begin this procedure with the housing open. Refer to Opening the Mini Node
Housing (on page 2-5).
Note: These accessories can be installed without removing the cover.
2
Install the pad(s) specified by the design print in the appropriate pad slot(s).
Note:
Be sure that all the pins on the attenuator pad bottom align with the pin holes
in the attenuator pad slot, allowing the attenuator pad to install flat against
the Mini Node module.
The forward output pad and forward Interstage pad (1 GHz: 3 dB; 862 MHz:
2 dB) are installed at the factory to set the operational gain of the station. Do
not change these pads in the field unless required by system design.
3
Install other options or accessories as desired.
Continued on next page
4035009 Rev B
Installation and Configuration
2-11
Installing the Accessories, Continued
To Install the Equalizers
Complete the following steps to install the equalizers in the Mini Node.
Note: For best results, follow this installation procedure exactly.
1
Begin this procedure with the housing open. Refer to Opening the Mini Node
Housing (on page 2-5).
Note: These accessories can be installed without removing the Mini Node cover.
2
Detailed instructions on tilt value set up can be found on page 3-4. For a list of
available accessory pad values and part numbers, see Technical Information (on
page 6-1).
Note:
The forward output equalizer and pad (1 GHz: 7 dB; 862 MHz: 6 dB) are factory
installed, and should not be changed in the field.
The plug-in output equalizer and an on-board equalizer combine to generate the
total internal tilt for the station. The plug-in output equalizer value is different
from the 1 GHz, or 862 MHz platform, in order to achieve optimum performance.
3
Install the reverse equalizer specified by the design print in the reverse equalizer
slot. The default factory reverse tilt is set at 0 dB. For the exact location of the
reverse equalizer, refer to the accompanying illustration. For a list of available
reverse equalizers, see Technical Information (on page 6-1).
4
Install other options or accessories as desired.
Continued on next page
2-12
Installation and Configuration
4035009 Rev B
Installing the Accessories, Continued
To Set up RF Output Port
Follow these steps to test the Gain Star Mini Node.
1
Factory default is one output port (Main shown below).
2
Before powering the Gain Star Mini Node, make sure all accessories are
installed and properly seated.
3
Make sure the unit is properly connected to the power supply. Refer to
System Power (on page 2-14).
4
For one High-level output, RF output Main is the active port. Make sure a
Signal Director (SD) is installed in the position marked “Signal Director” on
the Mini Node. The following diagram shows how to use the Signal Director.
5
For two outputs, Main, Aux are active ports.
Black Mark
Signal Director
4035009 Rev B
Installation and Configuration
2-13
System Power
System Power (44 to 90 VAC)
The Mini Node draw AC power from the coaxial cable. This AC power comes from
an external AC power supply.
CAUTION:
RF connectors and housing seizure assemblies can be damaged if AC shunt
power directors are not removed from the Mini Node before installing.
Power can come from the output ports, and each Mini Node can pass or block AC
power flow on any port without affecting RF continuity. However, at least one port
must pass AC power to bring power into the Mini Node.
Note: A red AC shunt power director is included with the unit. The red shunt is
used to activate the port that supplies power.
To set the power direction, install AC shunt power directors for the ports through
which you wish to pass AC.
CAUTION:
RF connectors and housing seizure assemblies can be damaged if AC shunt
power directors are not removed from the Mini Node before installing or
removing the amplifier model from the housing.
Before powering the Gain Star Mini Node, make sure all accessories are installed and
properly seated.
Important: The Main and Aux ports are the RF/Power Ports.
Main
Aux
Continued on next page
2-14
Installation and Configuration
4035009 Rev B
System Power, Continued
AC Shunt
Check the system maps to determine which AC Shunt should be inserted.
1
Open the housing. Refer to Opening the Mini Node Housing (on page 2-5).
2
Plug the Gain Star power shunt (red and black) into the AC shunt locations.
The red AC shunt indicates where power is coming into the Gain Star Mini
Node. The black AC shunt indicates where power is leaving the Gain Star
Mini Node. See table below as an example. The black AC shunt should be
installed before the red AC shunt.
3
Close the housing. Refer to Closing the Mini Node Housing (on page 2-23).
AC Shunt
Main
Aux
Powered from Main port
Red
Black
Powered from Aux port
Black
Red
Black Power Shunt
Red Power Shunt
Continued on next page
4035009 Rev B
Installation and Configuration
2-15
System Power, Continued
System Power (100 to 240 VAC)
The Mini Node can draw AC power from the local mains power.
The following information is applicable to the Mini Node powered by 100 to 240
VAC.
 Before powering the Gain Star Mini Node, make sure all accessories are installed
and properly seated.
Note: There is no AC shunt for the Mini Node powered by 100 to 240 VAC.
2-16
Installation and Configuration
4035009 Rev B
Removing and Reinstalling the Optical Modules
The following optical components can be removed and reinstalled from the mini
node optical section.
To Remove or Reinstall the Optical Transmitter
Complete the following steps to remove or reinstall an optical transmitter from the
optical section.
1
Open the housing. Refer to Opening the Mini Node Housing (on page 2-5).
2
Remove the AC shunt power directors (line power) or pull out the power
plug (mains power). Refer to System Power (on page 2-14).
3
Disconnect the fiber connector from the fiber bulkhead on the cover.
4
Remove the fiber pigtail through the fiber retainer clips.
5
Using a flat-blade screwdriver, loosen the mounting screw to remove the
optical transmitter.
Continued on next page
4035009 Rev B
Installation and Configuration
2-17
Removing and Reinstalling the Optical Modules, Continued
6
7
Pull the transmitter out from the Main board.
a)
If you are not reinstalling the transmitter at this time, proceed to step 11.
b)
If you are reinstalling the transmitter now, proceed to step 7.
Insert the transmitter in the slot and ensure that the transmitter is seated
properly.
Note: Insertion slot is labeled on the cover.
8
Use a flat-blade screwdriver to tighten the mounting screw.
9
Route the fiber pigtail through the fiber retainer clips.
Note: Route excess fiber loosely through the fiber retainer clips.
2-18
10
Reconnect the fiber connector to the fiber bulkhead.
11
Insert the AC shunt power directors (line power) or plug in the power plug
(mains power). Refer to System Power (on page 2-14).
12
Close the mini node housing. Refer to Closing the Mini Node Housing (on
page 2-23).
Installation and Configuration
4035009 Rev B
Connecting the Fiber Optic Service Cable to the Mini Node
Warning: Radiation
Do not apply power to this equipment if the fiber is unmated or unterminated.
Do not stare into an unmated fiber or at any mirror-like surface that could reflect
light emitted from an unterminated fiber.
Do not view an activated fiber with optical instruments (for example, eye loupes,
magnifiers, microscopes).
Use safety-approved optical fiber cable to maintain compliance with applicable laser
safety requirements.
Fiber Cable Handling
With repeated use, optical connectors can become dirty or scratched. This can
seriously degrade system performance. It is critical that connectors be maintained in
good condition. Do not disconnect or connect any connectors unless absolutely
necessary. Always clean both halves of each connector with a alcohol solution (99%
recommended) and lint-free wipes when preparing to join the two halves. Use
compressed air to clean the adapter.
Note: A ferrule cleaner, part number 468517, may be ordered for use with SC style
connector.
Continued on next page
4035009 Rev B
Installation and Configuration
2-19
Connecting the Fiber Optical Service Cable to the Mini Node, Continued
Fiber Connectors and Fiber Optical Service Cable
The following illustration shows the fiber connectors available with the mini node
when using fiber optic service cables.
To Attach the Service Cable Connector
Complete the following steps to attach the connector to the housing.
2-20
1
Install the RF PG11 to the 5/8” adapter and torque from 12.0 Nm to 16.0 Nm.
2
Feed the jacketed fibers one at a time through the fiber entry port.
3
Screwing the main nut into the fiber entry port and torque from 6.8 Nm to 9.0
Nm.
4
Screw the rotational nut back onto the main nut and torque from 9.0 Nm to
12.0 Nm.
5
Use heat shrink to seal as required.
6
Proceed to Attaching the Fiber Connectors (on page 2-21).
Installation and Configuration
4035009 Rev B
Attaching the Fiber Connectors
To Attach the Fiber Connectors
Note: Before attaching the fiber connectors, make sure the mini node housing is open.
For instructions, refer to Opening the Mini Node Housing (on page 2-5).
To attach the fiber connectors, you must perform the following:
 Prepare the connectors for installation.
 Install the fiber connectors.
Complete the following steps to attach the fiber connectors.
1
Carefully route the pigtails through the fiber retainer clips one at a time so that
each fiber pigtail connector lines up with its corresponding connector on the
cover.
Important: Do not attach the connectors until they have been cleaned. See
step 4 below.
Note:
 Route the fiber pigtails clockwise and as close to the outside edge.
 Be careful not to use a tight fiber radius. The radius should be at least
30 mm.
2
Clean the tips of the fiber connectors.
3
Attach the fiber connectors as shown in the following illustration. The
suggested fiber length is 580 mm.
4
Insert the forward input optical connector in the below fiber bulkhead.
Continued on next page
4035009 Rev B
Installation and Configuration
2-21
Attaching the Fiber Connectors, Continued
5
2-22
Insert the reverse output optical connector in the above fiber bulkhead.
Installation and Configuration
4035009 Rev B
Installing the WDM Module
The following WDM can only be installed for the 42/54 MHz split Mini Node.
To install the WDM Module
Complete the following steps to install the WDM Module from the optical section
1
Insert the WDM clips in the board and ensure that the WDM clips are seated
properly.
2
Insert the WDM into the WDM clips and ensure that the module is seated
properly.
Continued on next page
4035009 Rev B
Installation and Configuration
2-23
Installing the WDM Module, Continued
3
Route the fiber pigtail through the fiber retainer clips, connect Forward
Receiver to the Optical Input Port, and connect the Reverse Transmitter to
the Optical Output Port.
4
Insert the bulkhead in the bulkhead holder, use a cross-shaped screwdriver
to tighten the screw from 0.3 Nm to 0.5 Nm.
Continued on next page
2-24
Installation and Configuration
4035009 Rev B
Installing the WDM Module, Continued
5
Connect the Common Connector to the Optical Input/Output Port.
6
Insert the Optical Fiber Connector in the bulkhead.
7
Power up the Gain Star Mini Node referring to System Power (on page 2-14).
4035009 Rev B
Installation and Configuration
2-25
Closing the Mini Node Housing
To Close the Mini Node Housing
Complete the following steps to close the Mini Node housing.
1
Make sure that the housing gaskets are clean and in the correct position. Wipe
off any excess dirt and debris.
2
Close the housing.
3
Lightly secure the six ½-inch closure bolts with a hex driver or ratchet.
4
Using a torque wrench, tighten the six closure bolts to 2.8 Nm.
Important: Tighten the closure bolts in the correct sequence as specified in
Torquing Sequence (on page 2-2).
5
Using the same pattern, tighten the housing closure bolts from 6.8 Nm to 9.0
Nm.
Torquing Sequence
The following diagram shows the proper torquing sequence for the housing closure
bolts.
2-26
Installation and Configuration
4035009 Rev B
Chapter 3
Balancing and Setup
Overview
This chapter provides instructions for selecting and implementing the correct
balancing methods for the GainStar Mini Node in your cable system. Balancing sets
the operating levels of the station to ensure proper performance.
Important: Use the information in this chapter to identify the equipment needed for
balancing and to determine the correct forward path balancing method for your
system installation.
In This Chapter
Topic
4035009 Rev B
See Page
Preparing for Forward Path Balancing
3-2
Balancing the Forward Path
3-3
Balancing the Reverse Path
3-9
Setting OMI for Reverse Path Transmitter
3-14
Balancing and Setup
3-1
Preparing for Forward Path Balancing
Before You Begin
Before you begin balancing, it is important to review and understand the following
information. This information will show you which balancing process is appropriate
for your Mini Node.
Before balancing, make sure you have configured the mainboard according to the
specifications in your design print and that the Mini Node has warmed up for
approximately one hour. The table below shows the items needed for balancing.
3-2
You need a ...
To ...
Copy of the design print
Determine expected input and output
signal levels.
Torque wrench with 1/2-inch
socket
Open and close the system amplifier
housing.
Spectrum analyzer or signal
analysis meter capable of
working with frequencies up to
the highest design frequency
Determine absolute and relative signal
levels.
Test point probe
(part number 1010409)
Access the test points.
Length of 75 ohm coaxial cable
with F-connectors on each end
Connect the test point probe to the test
equipment.
Balancing and Setup
4035009 Rev B
Balancing the Forward Path
Introduction
Be sure to use the correct procedure for forward path balancing. Refer to To Test the
Forward Input Optical Power (on page 3-3) for help in identifying the procedure
that best fits your system installation and node type. Before you begin, make sure
that the mainboard is configured according to the specifications in the design print,
and that the node has warmed up for approximately one hour.
The forward section of the GainStar Mini Node performs conversion, amplification,
equalization, and test point functions for the forward path signal.
To Test the Forward Input Optical Power
Follow these steps to set or adjust input optical power.
1
Clean the input fiber interface.
2
Connect the input fiber connector to see the Optical Power from the LED
indicator. Following diagram shows the different input optical power level
indicated by the lighting status of LED.
3
Read the input optical power from the LED indicator. The recommended
range is -4 dBm to +2 dBm.
4
Compare the measured levels to the design input levels on the system design
print.
a) Proceed to step 5.
b) Adjust the Optical Power.
5
Connect the input fiber to the below fiber bulkhead.
Continued on next page
4035009 Rev B
Balancing and Setup
3-3
Balancing the Forward Path, Continued
To Determine the Output Tilt
Complete the following steps to determine the output tilt of the Mini Node.
Continued on next page
3-4
Balancing and Setup
4035009 Rev B
Balancing the Forward Path, Continued
1
Connect the test point probe to the forward output test point.
2
Consult the design print to find the proper output tilt.
3
To determine the actual output tilt, calculate the difference (in dB) between
the levels of the lowest and highest specified frequencies.
4
Proceed to To Set the Output Tilt (on page 3-5).
To Set Up the Output Tilt
862 MHz Equalizers
The forward output tilt can be adjusted using the Forward Equalizer (EQ). Each EQ
has a range of values. Each EQ value is set by installing the appropriate attenuator
pad value. There are three forward EQ’s for the 862 MHz Platform: 0 dB to 4 dB,
P/N 4034456; 5 dB to 9 dB, P/N 4034457; and 10 dB to 14 dB, P/N 4034458. See the
table below for the full range of forward input and output tilt set up arrangements
for the 862 MHz Platform.
Forward
Equalization
Forward Equalizer
Description
PN
Pad for Forward Equalizer
Description
PN
0 dB 1 GHz Plug-In Attenuator
4036021
1 dB 1 GHz Plug-In Attenuator
4036022
2 dB 1 GHz Plug-In Attenuator
4036023
3 dB 1 GHz Plug-In Attenuator
4036024
4 dB
4 dB 1 GHz Plug-In Attenuator
4036025
5 dB
5 dB 1 GHz Plug-In Attenuator
4036026
6 dB 1 GHz Plug-In Attenuator
4036027
7 dB 1 GHz Plug-In Attenuator
4036028
8 dB 1 GHz Plug-In Attenuator
4036029
9 dB
9 dB 1 GHz Plug-In Attenuator
4036030
10 dB
10 dB 1 GHz Plug-In Attenuator
4036031
11 dB 1 GHz Plug-In Attenuator
4036032
12 dB 1 GHz Plug-In Attenuator
4036033
13 dB 1 GHz Plug-In Attenuator
4036034
14 dB 1 GHz Plug-In Attenuator
4036035
0 dB
1 dB
2 dB
3 dB
6 dB
7 dB
8 dB
11 dB
12 dB
13 dB
14 dB
GS Fwd
Linear EQ,
0 to 4 dB
862 MHz
Platform
GS Fwd
Linear EQ,
5 to 9 dB
862 MHz
Platform
GS Fwd
Linear EQ,
10 to 14 dB
862 MHz
Platform
4034456
4034457
4034458
Continued on next page
4035009 Rev B
Balancing and Setup
3-5
Balancing the Forward Path, Continued
1GHz Equalizers
The forward output tilt can be adjusted using the Forward Equalizer (EQ). Each EQ
has a range of values. Each EQ value is set by installing the appropriate attenuator
pad value. There are three forward EQ’s for the 1 GHz Platform: 0 dB to 4 dB, P/N
4034459; 5 dB to 9 dB, P/N 4034460; and 10 dB to 14 dB, P/N 4034461. See the table
below for the full range of forward input and output tilt set up arrangements for the
1 GHz Platform.
Forward Equalizer
Forward
Equalization Description
PN
Pad for Forward Equalizer
0 dB
0 dB 1 GHz Plug-In Attenuator
4036021
1 dB 1 GHz Plug-In Attenuator
4036022
2 dB 1 GHz Plug-In Attenuator
4036023
3 dB 1 GHz Plug-In Attenuator
4036024
4 dB
4 dB 1 GHz Plug-In Attenuator
4036025
5 dB
5 dB 1 GHz Plug-In Attenuator
4036026
6 dB 1 GHz Plug-In Attenuator
4036027
7 dB 1 GHz Plug-In Attenuator
4036028
8 dB 1 GHz Plug-In Attenuator
4036029
9 dB
9 dB 1 GHz Plug-In Attenuator
4036030
10 dB
10 dB 1 GHz Plug-In Attenuator
4036031
11 dB 1 GHz Plug-In Attenuator
4036032
12 dB 1 GHz Plug-In Attenuator
4036033
13 dB 1 GHz Plug-In Attenuator
4036034
14 dB 1 GHz Plug-In Attenuator
4036035
1 dB
2 dB
3 dB
6 dB
7 dB
8 dB
11 dB
12 dB
13 dB
14 dB
GS Fwd
Linear EQ,
0 to 4 dB
1 GHz
Platform
GS Fwd
Linear EQ,
5 to 9 dB
1 GHz
Platform
GS Fwd
Linear EQ,
10 to 14 dB
1 GHz
Platform
4034459
4034460
4034461
Description
PN
Continued on next page
3-6
Balancing and Setup
4035009 Rev B
Balancing the Forward Path, Continued
 Increasing the equalizer value reduces the level at lower frequencies, relative to
the level at 862 MHz / 1 GHz.
 Decreasing the equalizer value increases the level at lower frequencies, relative to
the level at 862 MHz / 1 GHz.
Note:
 The forward output equalizer is installed at the factory, and should not be
changed in the field.
 The plug-in output equalizer and an on-board equalizer combine to generate the
total internal tilt for the station. The plug-in output equalizer value is different
from the 1 GHz, or 862 MHz platform, in order to achieve optimum performance.
Continued on next page
4035009 Rev B
Balancing and Setup
3-7
Balancing the Forward Path, Continued
To Set Up the Forward Output Level
After setting the tilt, complete the following steps to select the proper pad values for
the Mini Node. The output level of the Mini Node is set by selecting the proper pad
value.
1
Connect the test probe to the forward output test point.
2
Measure the output level at the high test design frequency, and compare this level
with the design level (on the design print).
a) 862 MHz for 862 MHz version
b)
3
1000 MHz for 1000 MHz version
Is the measured output level within ±0.5 dB of the design level?
Add 20 dB (signal output) or 16.5 dB (dual outputs) to the measured levels to find
the true levels.
a)
If the output level is within ±0.5 dB of the design output level, proceed to step 5.
b)
If the output level is more than the design output level, replace the forward
output pad with a higher value pad.
c)
If the output level is less than the design level, replace the forward output pad
with a lower value pad, and proceed to step 5.
4
Repeat steps 2 and 3 until the output level is correct. For optimum performance, the
output level in each port should not exceed 50 dBmV (single output) or 46.5 dBmV
(dual outputs)
5
Proceed to To Set Up the Reverse Input Level (on page 3-9).
CAUTION:
The pad should be configured carefully to control forward output level, otherwise,
output module damage may occur, which results in Node distortion.
3-8
Balancing and Setup
4035009 Rev B
Balancing the Reverse Path
Introduction
This section covers reverse RF amplifier cascade balancing. Balancing refers to the
process of individually aligning reverse amplifier station gain and tilt characteristics
to achieve reverse amplifier cascades that have optimum, repeatable transmission
characteristics.
There are a variety of test equipment combinations that enable proper balancing of
the reverse path. Regardless of the type of equipment used, the balancing process is
fundamentally the same.
To Set Up the Reverse Input Level
Complete the following steps to test the reverse input level.
Important: You cannot balance the node without the proper reverse input signals.
1
Connect the test equipment to the reverse input test point shown in the
illustration below.
2
The recommended input range is 5 dBmV/ch to 20 dBmV/ch.
3
Measure the input level, and compare this with the design level. The test
point attenuates input signals by 20 dB (for one reverse input port), or 23.5 dB
(for two reverse input ports).
4
Are measured levels within the design limits?
5
a)
If yes, proceed to step 5.
b)
If no, or if no signals are present, find the problem before proceeding.
You cannot balance the node without proper input signals.
Remove the test probe from the reverse input test point, leaving other
equipment connectors in place.
Continued on next page
4035009 Rev B
Balancing and Setup
3-9
Balancing the Reverse Path, Continued
To Set Up the Equalizer Values for Reverse Path
42 MHz Platform
The reverse output tilt can be adjusted using the Reverse Equalizer (EQ). Each EQ
has a range of values. Each EQ value is set by installing the corresponding attenuator
pad value. There are two reverse EQ’s for the 42 MHz Platform: 0 dB to 5 dB, P/N
4034465; 6 dB to 10 dB, P/N 4034466. See the table below for the full range of
configurations for the 42 MHz Platform EQs.
Reverse
Equalization
Reverse Equalizer
Description
Pad for Reverse Equalizer
PN
Description
PN
0 dB 1 GHz Plug-In Attenuator
4036021
1 dB 1 GHz Plug-In Attenuator
4036022
2 dB 1 GHz Plug-In Attenuator
4036023
3 dB 1 GHz Plug-In Attenuator
4036024
4 dB
4 dB 1 GHz Plug-In Attenuator
4036025
5 dB
5 dB 1 GHz Plug-In Attenuator
4036026
6 dB 1 GHz Plug-In Attenuator
4036027
7 dB 1 GHz Plug-In Attenuator
4036028
8 dB 1 GHz Plug-In Attenuator
4036029
9 dB 1 GHz Plug-In Attenuator
4036030
10 dB 1 GHz Plug-In Attenuator
4036031
0 dB *
1 dB
2 dB
3 dB
6 dB
7 dB
8 dB
9 dB
10 dB
GS Rev
Cable EQ,
0 to 5 dB
42 MHz
Platform
GS Rev
Cable EQ,
6 to 10 dB
42 MHz
Platform
4034465
4034466
* The section in gray indicates factory default values.
Continued on next page
3-10
Balancing and Setup
4035009 Rev B
Balancing the Reverse Path, Continued
65 MHz Platform
The reverse output tilt can be adjusted using the Reverse Equalizer (EQ). Each EQ
has a range of values. Each EQ value is set by installing the corresponding attenuator
pad value. There are two reverse EQ’s for the 65 MHz Platform: 0 dB to 5 dB, P/N
4034462; 6 dB to 10 dB, P/N 4034463. See the table below for the full range of
configurations for the 42 MHz Platform EQs.
Reverse
Equalization
Reverse Equalizer
Description
Pad for Reverse Equalizer
PN
Description
PN
0 dB 1 GHz Plug-In Attenuator
4036021
1 dB 1 GHz Plug-In Attenuator
4036022
2 dB 1 GHz Plug-In Attenuator
4036023
3 dB 1 GHz Plug-In Attenuator
4036024
4 dB
4 dB 1 GHz Plug-In Attenuator
4036025
5 dB
5 dB 1 GHz Plug-In Attenuator
4036026
6 dB 1 GHz Plug-In Attenuator
4036027
7 dB 1 GHz Plug-In Attenuator
4036028
8 dB 1 GHz Plug-In Attenuator
4036029
9 dB 1 GHz Plug-In Attenuator
4036030
10 dB
10 dB 1 GHz Plug-In Attenuator
* The section in gray indicates factory default values.
4036031
0 dB *
1 dB
2 dB
3 dB
6 dB
7 dB
8 dB
9 dB
GS Rev
Cable EQ,
0 to 5 dB
65 MHz
Platform
GS Rev
Cable EQ,
6 to 10 dB
65 MHz
Platform
4034462
4034463
Continued on next page
4035009 Rev B
Balancing and Setup
3-11
Balancing the Reverse Path, Continued
Complete the following steps to select the proper reverse Equalizer value.
1
Connect the test point probe to the OMI test point.
2
Compare the calculated tilt with the design tilt (on the design print).
Continued on next page
3-12
Balancing and Setup
4035009 Rev B
Balancing the Reverse Path, Continued
3
4
Is the reverse Output tilt within ± 0.5dB of the design tilt?
a)
If the output tilt is within ± 0.5dB of the design tilt, proceed to the next
section.
b)
If the output tilt is more than the design tilt, replace the reverse EQ with a
lower value.
c)
If the output tilt is less than the design tilt, replace the reverse EQ with a
higher value.
Measure the output tilt again, and then proceed to Setting OMI for Reverse
Path Transmitter (on page 3-14)
Note: The reverse equalizer is installed at the factory with 0 dB pad.
4035009 Rev B
Balancing and Setup
3-13
Setting OMI for Reverse Path Transmitter
To Set Up the OMI for Reverse Path Transmitter
Follow these steps to setup OMI for the reverse path transmitter. See below.
1
Consult the system design print to find proper OMI levels.
When the GainStar Mini Node is powered on, the green LED will light.
2
Insert the test probe into the test probe as above position.
3
Test the signal level at the maximum frequency of reverse path.
4
When the measured level is 20 dBmV, the corresponding OMI of the reverse
transmitter is 10%, OMI can be changed by adjusting the reverse output PAD. See
the chart below.
dBmV
5
3-14
Remove the test probe from the test point.
Balancing and Setup
4035009 Rev B
Chapter 4 Troubleshooting
Overview
This chapter describes the steps you may take to troubleshoot the GainStar Mini
Node.
In This Chapter
Topic
4035009 Rev B
See Page
Equipment
4-2
Low RF Output
4-3
No Forward RF Signal
4-4
Low or Degraded Forward RF Signal
4-5
No Reverse RF Signal
4-6
Low or Degraded Reverse RF Signal
4-7
Troubleshooting Carrie-to-Noise Problems
4-9
Miscellaneous Problems
4-10
No Power Supply
4-11
Cleaning Optical Connectors
4-12
Troubleshooting
4-1
Equipment
The following equipment may be necessary to perform some troubleshooting
procedures.
4-2

CLETOP or OPTIPOP ferrule (CLETOP Type A for SC, Type B for LC)

Compressed air (also called “canned air”)

Lint-free wipes moistened with optical-grade (99%) isopropyl alcohol

Optical connect scope

Optical power meter to measure light levels

Proper fiber connector for optical power meter to make optical connections

Spectrum analyzer or a field strength meter to measure RF levels

Test point probe, part number 1010409, to access test points
Troubleshooting
4035009 Rev B
Low RF Output
Use the steps in the following table to troubleshoot low RF output of the GainStar
Mini Node.
Low RF Output Troubleshooting Table
Possible Cause
Solution
Low RF input at the transmitter.
Verify correct RF input to the
transmitter.
Check the amplifiers preceding the
transmitter for proper inputs and
outputs.
Defective or improperly spliced optical
coupler (between headend transmitter
and node).
Replace or re-splice the coupler.
Unterminated leg of the optical
coupler.
Make sure all unused fiber pigtails are
terminated.
Low optical input to the node. The
optical input level should be typically
-4 to +2 dBm. Refer to the system
design print for the proper level.
If connectors are dirty, clean them. Refer
to Cleaning Optical Connectors (on
page 4-12).
Make sure all unused fiber pigtails are
terminated.
Inspect fiber routing that might be
wrapped too tightly.
Check for proper optical output from
transmitter.
Check the link loss.
Replace any scratched connectors.
Failure in the optical receiver.
4035009 Rev B
Replace the GainStar Mini Node. Use
the output test point of the optical
receiver to verify output levels.
Troubleshooting
4-3
No Forward RF Signal
The forward RF signal can be measured at the –20 dB RF test point on the mainboard
forward output test points.
No Forward RF Signal Troubleshooting Table
Before you begin troubleshooting for no forward RF signal, verify that the Mini
Node is receiving the proper optical input signal from the forward transmitter.
Important: You cannot balance the Mini Node without the proper optical input
signal.
Possible Cause
Solution
No forward RF signal at the forward
output test point.
Verify that all the proper accessories,
pads, EQs, and signal directors are firmly
installed in the correct locations.
Verify that the factory installed
accessories are firmly installed in the
correct locations.
Replace the mainboard.
4-4
Troubleshooting
4035009 Rev B
Low or Degraded Forward RF Signal
The forward RF signal can be measured at the –20 dB RF test point on the mainboard
forward output test points.
Low or Degraded Forward RF Signal Troubleshooting Table
Before you begin troubleshooting for a low or degraded forward RF signal, verify
that the Mini Node is receiving the proper forward optical input signal from the
forward transmitter.
Important: You cannot balance the Mini Node without the proper forward optical
input signal.
Make sure you have configured the mainboard according to the specifications in the
design print and that the node has warmed up for approximately one hour.
Make sure you are using the proper tilt reference when setting levels. An 862 MHz
or 1 GHz design balanced at 550 MHz requires a corrected tilt reference to
compensate for the difference in carrier levels between 550 MHz and 862 MHz or
1 GHz. The tilt reference at 550 MHz is lower than the tilt reference at 862 MHz or 1
GHz. Refer to Technical Information (on page 6-1) for more information.
Possible Cause
Solution
There is a proper forward RF signal at
the forward output test point, but a low
or degraded signal at one or all of the
forward output test points.
Verify that all the proper accessories,
pads, EQs, and signal directors are
firmly installed in the correct locations.
Verify that the factory installed
accessories are firmly installed in the
correct locations.
Note: Verifying factory installations
involves removing the mainboard
cover. Reinstall the mainboard cover
properly.
Replace the mainboard.
4035009 Rev B
Troubleshooting
4-5
No Reverse RF Signal
The reverse RF signal can be measured at the mainboard reverse input test point and
reverse OMI test points.
No Reverse RF Signal Troubleshooting Table
Before you begin troubleshooting for no reverse RF signal, verify that the node is
receiving the proper reverse RF input signals from the downstream amplifiers at the
node reverse input ports.
Important: You cannot balance the amplifier without the proper reverse RF input
signals.
Possible Cause
Solution
No reverse RF signal at the reverse input
test point(s).
Verify the connection of the RF Cable
Connector.
Verify that the node is receiving the
proper reverse RF input signals.
Important: You cannot balance the node
without the proper reverse RF input
signals.
Verify that all the proper accessories,
pads, EQs, Reverse Amplifier, and signal
director are firmly installed in the correct
locations.
Verify that the factory installed
accessories are firmly installed in the
correct locations.
Replace the reverse amplifier module.
4-6
Troubleshooting
4035009 Rev B
Low or Degraded Reverse RF Signal
The reverse RF signal can be measured at the mainboard reverse input test point and
reverse OMI test points.
Low or Degraded Reverse RF Signal Troubleshooting Table
Before you begin troubleshooting for no reverse RF signal, verify that the node is
receiving the proper reverse RF input signals from the downstream amplifiers at the
node reverse input ports.
Important: You cannot balance the amplifier without the proper reverse RF input
signals.
Make sure you have configured the mainboard according to the specifications in the
design print and that the node has warmed up for approximately one hour.
Make sure you are using the proper total tilt reference when setting receive levels.
Refer to the reverse equalizer charts in Technical Information (on page 6-1) for more
information.
Possible Cause
Solution
Low or degraded reverse RF signal at the
reverse input test point(s).
Verify that the node is receiving the
proper reverse RF input signals.
Important: You cannot balance the node
without the proper reverse RF input
signals.
There are proper reverse RF signals at the
reverse input test point, but a low or
degraded signal at the OMI test point.
Measure the reverse input test point and
the OMI test point. Subtract the reverse
amplifier gain and add the pad values
and EQ insertion loss to verify proper
reverse amplifier gain.
Verify that all the proper accessories,
pads, EQs, Reverse amplifier, and signal
directors (if applicable) are firmly
installed in the correct locations.
Verify that the factory installed
accessories are firmly installed in the
correct locations.
Verify that any unused RF ports are
properly terminated.
Continued on next page
4035009 Rev B
Troubleshooting
4-7
Low or Degraded Reverse RF Signal, Continued
Reverse RF signal still low or degraded.
If degradation is generated in the reverse
amplifier, replace the reverse amplifier.
If degradation is generated by the
downstream amplifier reverse RF signal,
troubleshoot the RF module feeding this
station.
Replace the reverse amplifier module.
4-8
Troubleshooting
4035009 Rev B
Troubleshooting Carrier-to-Noise Problems
Complete the following steps to troubleshoot carrier-to-noise problems.
Carrier-to-noise problems Troubleshooting Table
Possible Cause
Solution
Low optical input to the Mini
Node. The optical input level
should be typically -4 to +2
dBm. Refer to the system
design print for the proper
level.
If connectors are dirty, clean them. Refer to Cleaning
Optical Connectors (on page 4-12).
Inspect fiber routing that might be wrapped too
tightly.
Check for proper optical output from transmitter.
Check the link loss.
Replace any scratched connectors.
Verify RF input to the transmitter.
4035009 Rev B
Low RF input at transmitter.
Check all amplifiers preceding the transmitter for
proper inputs and outputs.
Failure in optical receiver.
Replace the GainStar Mini Node module.
Defective or improperly
spliced optical coupler
between headend transmitter
and node.
Replace or re-splice the coupler.
Unterminated leg of optical
coupler.
Make sure all unused fiber pigtails are terminated.
Make sure all unused fiber pigtails are terminated.
Troubleshooting
4-9
Miscellaneous Problems
Complete the following steps to troubleshoot miscellaneous problems.
Miscellaneous problems Troubleshooting Table
Possible Cause
No RF signal present in
network.
Solution
Check network power supply.
Verify that power is present at the node power supply.
Check that the optical signal is present on fiber.
Check that voltage level on the optical receiver is the same
as it was when commissioned.
Check that output RF is present at forward output test
point.
Poor pictures on
network.
Check RF input level at transmitter.
Check optical output of transmitter.
Check optical levels at forward optical receiver.
Check and clean fiber connectors. See Cleaning Optical
Connectors (on page 4-12).
Check RF levels at Mini Node outputs.
No RF output from
headend or hub reverse
optical receiver.
Check fiber connector in headend or hub.
Check fiber for optical input level.
Check fiber connections.
Check reverse transmitter in node.
Check RF input level to transmitter in node.
Ensure that cable is connected and not crushed.
Check for RF at amplifier reverse input test point.
Excessive noise in return.
Check fiber connections and clean if necessary.
Check noise level at transmitter test point.
4-10
Troubleshooting
4035009 Rev B
No Power Supply
No Power Supply
Before you begin troubleshooting for the power supply, verify that the power supply
is receiving power.
Important: You cannot balance the node without the proper power supply.
Possible Cause
Solution
No Power supply.
Verify that the power supply is receiving
power.
Important: You cannot balance the Mini
Node without the proper power supply.
Replace the GainStar Mini Node.
4035009 Rev B
Troubleshooting
4-11
Cleaning Optical Connectors
Note: The proper procedure for cleaning optical connectors depends on the
connector type. The following describes general instructions for cleaning optical
connectors. Many companies have established procedures for cleaning conductors
which should be followed. If your company has established procedures, the
following instructions should be considered along with your procedures.
Cleaning fiber-optic connectors can help prevent interconnect problems and aid
system performance. When optical connectors are disconnected or reconnected, the
fiber surface can become dirty or scratched. If not addressed, this dirt or damage
may lead to interconnect problems and reduced system performance.
Fiber-optic connectors should be inspected prior to mating and cleaned as needed to
remove all dust and contaminants without leaving any residue. Connectors should
be visually inspected after cleaning to confirm that they are clean and undamaged.
Recommended Equipment
The following equipment is recommended to clean the ends of fiber-optic
connectors.
 CLETOP or OPTIPOP ferrule cleaner (CLETOP Type A for SC)
 Compressed air (also called “canned air”)
 Lint-free wipes moistened with optical-grade (99%) isopropyl alcohol
 Optical connector scope
Tips for Optimal Fiber-Optic Connector Performance
Follow these guidelines to ensure optimal connector performance.
 Do not connect or disconnect optical connectors while optical power is present.
 Always use compressed air before cleaning the fiber-optic connectors.
 Always use end caps on connectors when they are not in use.
 Always use compressed air to clean the end caps.
 If you have any degraded signal problems, clean the fiber-optic connector.
 Advance a clean portion of the ferrule cleaner reel for each cleaning.
 Turn off optical power before making or breaking optical connections in order to
avoid microscopic damage to fiber mating surfaces.
Continued on next page
4-12
Troubleshooting
4035009 Rev B
Cleaning Optical Connectors, Continued
To Clean Optical Connectors
Note: The proper procedure for cleaning optical connectors depends on the
connector type. The following describes general instructions for cleaning optical
connectors. Many companies have established procedures for cleaning conductors
which should be followed. If your company has established procedures, the
following instructions should be considered along with your procedures.
 Connect or disconnect fiber only when equipment is OFF or in Service mode.
 Do not apply power to this equipment if the fiber is unmated or unterminated.
 Do not look into an unmated fiber or at any mirror-like surface that could reflect
light that is emitted from an unterminated fiber.
 Do not view an activated fiber with optical instruments such as eye loupes,
magnifiers, or microscopes.
 Use safety-approved optical fiber cable to maintain compliance with applicable
laser safety requirements.
Fiber Optic Connector Cleaning Instructions
Connector cleanliness is crucially important for optimum results in fiber-optic
communications links. Even the smallest amount of foreign material can make it
impossible to obtain the expected insertion and return losses. This can reduce the
range of the equipment, shorten its expected service life, and possibly prevent the
link from initializing at all.
New equipment is supplied with clean optical connectors and bulkheads. All optical
connectors (bulkheads and jumpers) should be inspected using an appropriate
optical scope prior to connector mating. If endface contamination is observed, the
connector should be cleaned and then re-inspected to verify cleaning.
Connectors and Bulkheads
Most fiber-optic connectors are of the physical contact (PC) type. PC type connectors
are designed to touch their mating connectors, thereby preventing air gaps which
cause reflections. For optimum performance, all dirt must be removed.
Bulkheads can also become dirty enough to affect performance, either from airborne
dust or from contamination introduced by connectors.
Continued on next page
4035009 Rev B
Troubleshooting
4-13
Cleaning Optical Connectors, Continued
Important: Read the above warning before performing cleaning procedures.
Cleaning Connectors
Important:
 All external jumper connectors must be cleaned before inserting them into the
optical module.
 Before you begin, remove optical power from the module or ensure that optical
power has been removed.
Complete the following steps to clean fiber-optic connectors that will be connected to
the optical module.
1
Inspect the connector through an optical connector scope. If the connector is
damaged, for example, scratched, burned, and so forth, replace the jumper.
2
If the connector is dirty but otherwise undamaged, clean the connector as
follows:
a) Make several swipes across the face of the connector with the appropriate
ferrule cleaner. This will remove dust and some films.
b) Listen for a slight "squeak" typically generated during this process,
indicating a clean connector.
c)
3
Inspect the connector again through the scope to confirm that it is clean.
If a second inspection indicates that further cleaning is needed:
a) Use 99% isopropyl alcohol and a lint-free wipe to clean the connector.
b) Use the appropriate ferrule cleaner again to remove any film left over
from the alcohol.
c)
4
Inspect the connector again through the scope and confirm that it is clean.
If necessary, repeat steps 3a-3c until the connector is clean.
Continued on next page
4-14
Troubleshooting
4035009 Rev B
Cleaning Optical Connectors, Continued
Cleaning Bulkheads
Important:
 Do not detach the bulkhead from the module front panel for cleaning under any
circumstances. There is little or no slack in the fiber attached to the bulkhead, and
any attempt to remove the bulkhead will risk damage to the fiber.
 It is generally more difficult to clean bulkhead connectors and verify their
condition due to the inaccessibility of the fiber end face. For this reason, you
should only attempt to clean a bulkhead connector when a dirty connector is
indicated.
 Complete the following steps to clean the bulkhead.
1
Insert a dry bulkhead swab into the bulkhead and rotate the swab several
times.
2
Remove the swab and discard.
Important: Swabs may be used only once.
3
Check the bulkhead optical surface with a fiber connector scope to confirm
that it is clean. If further cleaning is needed:
a) Moisten a new bulkhead swab using a lint-free wipe moistened with
optical grade (99%) isopropyl alcohol.
b) With the connector removed, fully insert the bulkhead swab into the
bulkhead and rotate the swab several times.
c)
Remove the swab and discard. Swabs may be used only once.
d) Repeat steps 1 and 2 with a new dry bulkhead swab to remove any excess
alcohol or residue.
e) Check with a fiber connector scope again to confirm that there is no dirt
or alcohol residue on the optical surface.
f)
If any alcohol residue remains, repeat steps 3d-3f.
4
Mate all connectors to bulkheads and proceed to Verifying Equipment
Operation.
5
It is also recommended that all connectors be visually inspected after cleaning
to verify the connector is clean and undamaged.
Continued on next page
4035009 Rev B
Troubleshooting
4-15
Cleaning Optical Connectors, Continued
Verifying Equipment Operation
Perform circuit turn-up. If the equipment does not come up, that is fails verification
or indicates a reflection problem, clean the connectors and bulkheads again.
For Further Assistance
If you have any questions or concerns about cleaning fiber-optic connectors, contact
Customer Service using the contact information provided in Customer Support
Information (on page 5-1).
4-16
Troubleshooting
4035009 Rev B
Chapter 5
Customer Support Information
Overview
This chapter contains information on obtaining product support.
In This Chapter
Topic
Obtaining Product Support
4035009 Rev B
Customer Support Information
See Page
5-2
5-1
Obtaining Product Support
IF…
THEN…
you have general questions about this
product
Contact your distributor or sales agent
for product information or refer to
product data sheets on www.cisco.com.
you have technical questions about this
product
Call the nearest Technical Service center
or Cisco office.
you have customer service questions or
need a return material authorization
(RMA) number
Call the nearest Customer Service center
or Cisco office.
Support Telephone Numbers
Telephone Numbers
This table lists the Technical Support and Customer Service numbers for your area.
Region
Centers
Telephone and Fax Numbers
North America
Cisco Services
For Technical Support, call:
Atlanta, Georgia Toll-free: 1-800-722-2009
United States
Local: 678-277-1120 (Press 2 at the prompt)
For Customer Service, call:
Toll-free: 1-800-722-2009
Local: 678-277-1120 (Press 3 at the prompt)
Fax: 770-236-5477
E-mail: customer-service@cisco.com
Europe,
Middle East,
Africa
Belgium
For Technical Support, call:
Telephone: 32-56-445-197 or 32-56-445-155
Fax: 32-56-445-061
For Customer Service, call:
Telephone: 32-56-445-444
Fax: 32-56-445-051
E-mail: service-elc@cisco.com
Japan
Japan
Telephone: 82-2-3429-8800
Fax: 82-2-3452-9748
E-mail: songk@cisco.com
Continued on next page
5-2
Customer Support Information
4035009 Rev B
Obtaining Product Support, Continued
Korea
Korea
Telephone: 82-2-3429-8800
Fax: 82-2-3452-9748
E-mail: songk@cisco.com
China (mainland) China
Telephone: 86-21-2401-4433
Fax: 86-21-2401-4455
E-mail: repaircentercn@external.cisco.com
All other
Asia-Pacific
countries &
Australia
Hong Kong
Brazil
Brazil
Telephone: 852-2588-4746
Fax: 852-2588-3139
E-mail: support.apr@sciatl.com
Telephone: 11-55-08-9999
Fax: 11-55-08-9998
E-mail: fattinl@cisco.com or
ecavalhe@cisco.com
Mexico,
Central America,
Caribbean
Mexico
For Technical Support, call:
Telephone: 52-3515152599
Fax: 52-3515152599
For Customer Service, call:
Telephone: 52-55-50-81-8425
Fax: 52-55-52-61-0893
All other
Latin America
countries
Argentina
For Technical Support, call:
Telephone: 54-23-20-403340 ext 109
Fax: 54-23-20-403340 ext 103
For Customer Service, call:
Telephone: 770-236-5662
Fax: 770-236-5888
E-mail: keillov@cisco.com
4035009 Rev B
Customer Support Information
5-3
5-4
Customer Support Information
4035009 Rev B
Chapter 6
Technical Information
Overview
This appendix contains forward and reverse equalizer typical insertion loss at
various frequencies.
In This Appendix
Topic
4035009 Rev B
See Page
Forward Linear Equalizer
6-2
Reverse Cable Equalizer
6-4
GainStar Mini Node Accessories Part Numbers
6-6
Technical Information
6-1
Forward Linear Equalizer
1 GHz Forward Linear Equalizer Loss Table
EQ
Value
(dB)
Typical Insertion Loss (dB) at Various Frequencies (MHz)
Part
Number 54
77
86
550
600
650
750
870
1000
0
0.6
0.6
0.6
0.3
0.3
0.2
0.2
0.2
0.4
1
1.6
1.6
1.6
0.8
0.8
0.7
0.7
0.6
0.8
2.6
2.6
2.6
1.4
1.3
1.2
1.1
1.0
1.0
3
3.6
3.6
3.5
1.9
1.8
1.7
1.5
1.3
1.0
4
4.6
4.5
4.5
2.4
2.3
2.2
2.0
1.8
1.2
5
5.8
5.8
5.7
2.9
2.7
2.5
2.1
1.6
1.0
6
6.8
6.7
6.7
3.4
3.0
2.8
2.4
1.7
1.0
7.8
7.7
7.7
3.8
3.5
3.2
2.6
1.9
1.0
8
8.8
8.7
8.6
4.2
3.9
3.5
2.9
2.0
1.0
9
9.8
9.6
9.5
4.6
4.2
3.8
3.1
2.0
1.0
10
10.8
10.7
10.6
5.8
5.4
4.9
4.0
2.8
1.0
11
11.8
11.7
11.6
6.1
5.7
5.2
4.2
2.8
1.0
12.8
12.6
12.5
6.5
6.0
5.5
4.3
2.9
1.0
13
13.8
13.6
13.5
6.9
6.3
5.7
4.4
2.9
1.0
14
14.7
14.5
14.4
7.2
6.7
6.0
4.5
3.0
1.0
2
7
12
4034459
4034460
4034461
Continued on next page
6-2
Technical Information
4035009 Rev B
Forward Linear Equalizer, Continued
862 MHz Forward Linear Equalizer Loss Table
EQ
Value
Part
Number
Typical Insertion Loss(dB)at Various Frequencies(MHz)
54
77
86
550
600
650
750
862
0
0.5
0.5
0.5
0.2
0.2
0.1
0.1
0.3
1
1.5
1.5
1.4
0.7
0.6
0.5
0.4
0.6
2.5
2.4
2.4
1.1
1.0
0.9
0.8
0.7
3
3.4
3.4
3.3
1.6
1.4
1.3
1.0
0.7
4
4.4
4.4
4.3
2.0
1.8
1.6
1.2
0.7
5
5.8
5.8
5.7
2.8
2.7
2.3
1.7
1.0
6
6.8
6.7
6.7
3.3
3.0
2.7
1.9
1.0
7.8
7.7
7.6
3.8
3.4
3.1
2.1
1.0
8
8.8
8.7
8.6
4.2
3.8
3.3
2.3
1.0
9
9.8
9.6
9.6
4.5
4.1
3.5
2.5
1.0
10
10.8
10.6
10.5
5.0
4.5
3.8
2.6
1.0
11
11.8
11.6
11.5
5.3
4.8
4.1
2.7
1.0
12.7
12.5
12.4
5.6
5.0
4.3
2.8
1.0
13
13.7
13.5
13.3
5.9
5.3
4.5
2.9
1.0
14
14.7
14.4
14.2
6.2
5.5
4.7
3.0
1.0
(dB)
2
7
12
4035009 Rev B
4034456
4034457
4034458
Technical Information
6-3
Reverse Cable Equalizer
42 MHz Reverse Cable Equalizer Loss Table
EQ Value
(dB)
Part
Number
Typical Insertion Loss(dB)at Various
Frequencies(MHz)
5
40
42
0
0.7
0.5
0.5
1
1.7
0.6
0.6
2.6
0.7
0.7
3.6
0.8
0.7
4
4.5
0.9
0.8
5
5.5
1.0
0.9
6
6.7
1.0
1.0
7
7.6
1.0
1.0
8.6
1.1
1.0
9.5
1.2
1.0
10.4
1.2
1.0
2
4034465
3
8
4034466
9
10
Continued on next page
6-4
Technical Information
4035009 Rev B
Reverse Cable Equalizer, Continued
65 MHz Reverse Cable Equalizer Loss Table
EQ Value
(dB)
5
65
0
0.8
0.6
1
1.8
0.7
2.8
0.8
3.8
0.9
4
4.8
1.0
5
5.7
1.0
6
6.7
0.6
7
7.7
0.6
8.6
0.6
9
9.6
0.6
10
10.6
0.7
2
3
8
4035009 Rev B
Part Number
Typical Insertion Loss(dB)at
Various Frequencies(MHz)
4034462
4034463
Technical Information
6-5
GainStar Mini Node Accessories Part Numbers
The following table provides part numbers for the GainStar Mini Node accessories.
6-6
Attenuator Pad Value
Part Number
0 dB 1 GHz Plug-In Attenuator
4036021
1 dB 1 GHz Plug-In Attenuator
4036022
2 dB 1 GHz Plug-In Attenuator
4036023
3 dB 1 GHz Plug-In Attenuator
4036024
4 dB 1 GHz Plug-In Attenuator
4036025
5 dB 1 GHz Plug-In Attenuator
4036026
6 dB 1 GHz Plug-In Attenuator
4036027
7 dB 1 GHz Plug-In Attenuator
4036028
8 dB 1 GHz Plug-In Attenuator
4036029
9 dB 1 GHz Plug-In Attenuator
4036030
10 dB 1 GHz Plug-In Attenuator
4036031
11 dB 1 GHz Plug-In Attenuator
4036032
12 dB 1 GHz Plug-In Attenuator
4036033
13 dB 1 GHz Plug-In Attenuator
4036034
14 dB 1 GHz Plug-In Attenuator
4036035
15 dB 1 GHz Plug-In Attenuator
4036036
16 dB 1 GHz Plug-In Attenuator
4036037
17 dB 1 GHz Plug-In Attenuator
4036038
18 dB 1 GHz Plug-In Attenuator
4036039
19 dB 1 GHz Plug-In Attenuator
4036040
20 dB 1 GHz Plug-In Attenuator
4036041
Plug-In 75 Ω Terminator 3 – PIN
4036140
Power Shunt(black)
4034476
Power Shunt(red)
4034477
Signal Director
4034468
Test point probe
1010409
Technical Information
4035009 Rev B
Cisco Systems, Inc.
5030 Sugarloaf Parkway, Box 465447
Lawrenceville, GA 30042
678 277-1120
800 722-2009
www.cisco.com
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates
in the U.S. and other countries. A listing of Cisco's trademarks can be found at
www.cisco.com/go/trademarks.
Third party trademarks mentioned are the property of their respective owners.
Product and service availability are subject to change without notice.
© 2010-2011 Cisco and/or its affiliates. All rights reserved.
Aug 2011
Part Number 4035009 Rev B
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