Cisco GoQAM Operating instructions

GoQAM Modulator RF Output
and IF Output Hardware
Installation and Operation Guide

Please Read
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
TrademarkAcknowledgments
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)
PublicationDisclaimer
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
© 2007, 2012 Cisco and/or its affiliates. All rights reserved. Printed in the United States of
America.
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.

4004834 Rev D iii
Contents
Safety Precautions vii
FCC Compliance xi
About This Guide xiii
Chapter 1 Introducing the GoQAM 1
System Overview ..................................................................................................................... 2
GoQAM Input Pairs................................................................................................................. 6
Input/Output Process ............................................................................................................. 7
Front Panel Overview ........................................................................................................... 10
Back Panel Overview............................................................................................................. 12
Chapter 2 Installing the GoQAM 15
Installation Process Summary.............................................................................................. 16
Unpack and Inspect the GoQAM ........................................................................................ 18
Record the MAC Address..................................................................................................... 19
Stacking Guidelines............................................................................................................... 20
Install the Modulator Into a Rack ........................................................................................ 24
Connect Power Sources......................................................................................................... 27
Connect the DVB ASI Input Ports ....................................................................................... 29
Connect the 10/100BaseT Ethernet Port............................................................................. 31
Connect the RF OUT or IF OUT Ports ................................................................................ 33
Chapter 3 Provision the RF GoQAM 37
Understand the RF GoQAM GUIs ...................................................................................... 38
Provision GoQAMs on the DNCS ....................................................................................... 46
Chapter 4 Provision the IF GoQAM 53
Understand the IF GoQAM GUIs........................................................................................ 54
Understand the Set Up IF GoQAM GUI............................................................................. 55
Understand the Set Up UpConverter GUI......................................................................... 63
Provision an IF GoQAM on the DNCS............................................................................... 71

Contents
iv 4004834 Rev D
Chapter 5 Operating the RF Modulator 77
Understand the Boot Process ............................................................................................... 78
Change the Boot Mode.......................................................................................................... 81
Read the Default Status Screen ............................................................................................ 83
Use the Front Panel Keys to Change Configuration Settings .......................................... 84
Adjust the Frequencies of a Selected Carrier ..................................................................... 86
Adjust the RF Output Level of a Selected Carrier............................................................. 87
Mute the RF Output of a Selected Carrier.......................................................................... 88
Change the Carrier Mode of a Selected Carrier................................................................. 89
Monitor Setup Options.......................................................................................................... 90
Change an RF Carrier Frequency ........................................................................................ 98
Resetting the GoQAM ........................................................................................................... 99
Chapter 6 Operating the IF GoQAM 101
Understand the Boot Process ............................................................................................. 102
Change the Boot Mode........................................................................................................ 105
Read the Default Status Screen .......................................................................................... 107
Use the Front Panel Keys to Change Configuration Settings........................................ 108
Adjust the IF Output Level of a Selected Carrier ............................................................ 110
Mute the IF Output of a Selected Carrier .........................................................................111
Change the Carrier Mode of a Selected Carrier............................................................... 112
Monitor Setup Options........................................................................................................ 113
Select an IF Channel or Carrier .......................................................................................... 121
Chapter 7 Inspect the Modulator 123
Quarterly Inspection............................................................................................................ 124
Replace the Fuse................................................................................................................... 125
Diagnose the Fan.................................................................................................................. 127
Replace the Fan .................................................................................................................... 128
Chapter 8 Troubleshooting the GoQAM 131
Alarm Conditions ................................................................................................................ 132
Troubleshooting Alarm Messages..................................................................................... 134
Troubleshooting Boot Screen Error Messages ................................................................. 143
Chapter 9 Customer Information 147

Contents
4004834 Rev D v
Appendix A Technical Specifications 149
Installation and Operation Requirements ........................................................................ 150
IF Specifications.................................................................................................................... 152
RF Specifications .................................................................................................................. 153
ASI Input Specifications...................................................................................................... 154
Modulation Specifications .................................................................................................. 155
Digital I/O Performance Specifications............................................................................ 156
Connector Type .................................................................................................................... 157
Factory Default Settings...................................................................................................... 158
Standard Output Frequencies ............................................................................................ 159
Index 161

Safety Precautions
4004834 Rev D vii
Safety Precautions
Read,Retain,and FollowThese Instructions
Carefully read all safety and operating instructions before operating this product. Follow all
operating instructions that accompany this product. Retain the instructions for future use.
Give particular attention to all safety precautions.
WarningandCautionIcons
WARNING:
Avoid personal injury and product damage! Do not proceed beyond any icon
until you fully understand the indicated conditions.
The following icons alert you to important information about the safe operation of this
product:
You will find this icon in the literature that accompanies this product. This icon
indicates important operating or maintenance instructions.
You may find this icon affixed to this product and in this document to alert you of
electrical safety hazards. On this product, this icon indicates a live terminal; the
arrowhead points to the terminal device.
You may find this icon affixed to this product. This icon indicates a protective earth
terminal.
You may find this icon affixed to this product. This icon indicates excessive or
dangerous heat.
You may find this symbol affixed to this product and in this document. This symbol
indicates an infrared laser that transmits intensity-modulated light and emits
invisible laser radiation and an LED that transmits intensity-modulated light.
HeedAllWarnings
Adhere to all warnings on the product and in the operating instructions.
Avoid ElectricShock
Follow the instructions in this warning.
WARNING:
To reduce risk of electric shock, perform only the instructions that are
included in the operating instructions. Refer all servicing to qualified service
personnel.

Safety Precautions
viii 4004834 Rev D
Servicing
WARNING:
Avoid electric shock! Opening or removing the cover may expose you to
dangerous voltages.
Do not open the cover of this product and attempt service unless instructed to do so in the
operating instructions. Refer all servicing to qualified personnel only.
Cleaning,Water,Moisture,OpenFlame
To protect this product against damage from moisture and open flames, do the following:
Before cleaning, unplug this product from the AC outlet. Do not use liquid or aerosol
cleaners. Use a dry cloth for cleaning.
Do not expose this product to moisture.
Do not place this product on a wet surface or spill liquids on or near this product.
Do not place or use candles or other open flames near or on this product.
Ventilation
To protect this product against damage from overheating, do the following:
This product has openings for ventilation to protect it from overheating. To ensure
product reliability, do not block or cover these openings.
Do not open this product unless otherwise instructed to do so.
Do not push objects through openings in the product or enclosure.
Placement
To protect this product against damage from breakage, do the following:
Place this product close enough to a mains AC outlet to accommodate the length of the
product power cord.
Route all power supply cords so that people cannot walk on, or place objects on, or lean
objects against them. This can pinch or damage the cords. Pay particular attention to
cords at plugs, outlets, and the points where the cords exit the product.
Make sure the mounting surface or rack is stable and can support the size and weight of
this product.
WARNING:
Avoid personal injury and damage to this product! An unstable surface may
cause this product to fall.

Safety Precautions
4004834 Rev D ix
When moving a cart that contains this product, check for any of the following possible
hazards:
Move the cart slowly and carefully. If the cart does not move easily, this condition may
indicate obstructions or cables that you may need to disconnect before moving this cart
to another location.
Avoid quick stops and starts when moving the cart.
Check for uneven floor surfaces such as cracks or cables and cords.
WARNING:
Avoid personal injury and damage to this product! Move any appliance and
cart combination with care. Quick stops, excessive force, and uneven
surfaces may cause the appliance and cart to overturn.
Fuse
When replacing a fuse, heed the following warnings.
WARNING:
Avoid electric shock! Always disconnect all power cables before you change a
fuse.
WARNING:
Avoid product damage! Always use a fuse that has the correct type and rating.
The correct type and rating are indicated on this product.
GroundingThisProduct(U.S.A.andCanadaOnly)
Safety Plugs
If this product is equipped with either a three-prong (grounding pin) safety plug or a two-
prong (polarized) safety plug, do not defeat the safety purpose of the polarized or
grounding-type plug. Follow these safety guidelines to properly ground this product:
For a 3-prong plug (consists of two blades and a third grounding prong), insert the plug
into a grounded mains, 3-prong outlet.
Note: This plug fits only one way. The grounding prong is provided for your safety. If
you are unable to insert this plug fully into the outlet, contact your electrician to replace
your obsolete outlet.
For a 2-prong plug (consists of one wide blade and one narrow blade), insert the plug
into a polarized mains, 2-prong outlet in which one socket is wider than the other.
Note: If you are unable to insert this plug fully into the outlet, try reversing the plug. The
wide blade is provided for your safety. If the plug still fails to fit, contact an electrician to
replace your obsolete outlet.

Safety Precautions
x 4004834 Rev D
Grounding Terminal
If this product 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 an
earth ground, such as an equipment rack that is grounded.
20050727 Headend/Rack

FCC Compliance
4004834 Rev D xi
FCC Compliance
Where this equipment is subject to U.S.A. FCC and/or Industry Canada rules, the following
statements apply.
UnitedStatesFCC Compliance
This device has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against such interference when this equipment is operated in a commercial
environment.
This equipment generates, uses, and can radiate radio frequency energy, and if not installed
and used in accordance with the instruction manual may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference, in which case users will be required to correct the interference at their own
expense.
CanadaEMI Regulation
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la class A est conforme à la norme NMB-003 du Canada.
20061110 FCC HE

About This Guide
4004834 Rev D xiii
About This Guide
Introduction
This guide describes both the intermediate frequency (IF) Gigabit Overlay
Quadrature Amplitude Modulation (GoQAM) modulator and the radio frequency
(RF) GoQAM.
Note: In this guide, the GoQAM modulator is referred to as the GoQAM.
The RF GoQAM is a software-modified Model D9479-1 Gigabit QAM (GQAM)
Modulator. The Model D9479-3 IF GoQAM is similar to the RF GoQAM, but has IF
outputs in lieu of RF outputs, as well as a different back panel. Both are integral
components of Cisco Overlay solution. The Overlay solution uses Digital Broadband
Delivery System (DBDS) technology to create a network in which different
conditional access (CA) systems can coexist in a coherent manner. Overlay
technology allows a PowerKEY®DBDS network to be “laid over” an existing cable
network that uses a different CA system.
Important: The GoQAM requires System Release (SR) 2.5/SR 3.5 (or later) with the
Overlay feature enabled.
Purpose
This guide provides detailed specifications and component descriptions for the
GoQAM and how the GoQAM functions in Cisco’s Overlay solution. This guide also
includes all of the procedures that enable you to install, provision, and operate the
GoQAM within your cable network. Call center personnel can use this guide to
assist them with common troubleshooting procedures.
Scope
This guide includes the following topics:
Descriptions of GoQAM functions
Descriptions of GoQAM components
Installation procedures
Operation procedures
Troubleshooting guidelines
Customer information
IF and RF GoQAM technical specifications

About This Guide
xiv 4004834 Rev D
Audience
This guide is written for cable network system administrators and engineers,
operators of the Overlay DNCS, call center personnel, and system operators who are
responsible for installing, operating, maintaining, and troubleshooting the GoQAM.
DocumentVersion
This is the fourth release of this document. In addition to minor text and graphic
changes, the following table provides the technical changes to this document.
Description See Topic
Removed references to locking the front panel Throughout document
Updated compliance information Throughout document

4004834 Rev D 1
Introduction
This chapter describes how the GoQAM functions within the Overlay
environment, explains how the GoQAM processes and outputs data, and
provides illustrations and descriptions of the front and back panel
components for both the IF and the RF versions of the GoQAM.
Important! You must be operating SR 2.5/SR 3.5 (or later) to install and
provision (configure) a GoQAM on your system.
1Chapter 1
Introducing the GoQAM
In This Chapter
System Overview.................................................................................... 2
GoQAM Input Pairs ............................................................................... 6
Input/Output Process............................................................................ 7
Front Panel Overview .......................................................................... 10

Back Panel Overview............................................................................ 12

Chapter 1 Introducing the GoQAM
2 4004834 Rev D
System Overview
DiagramofCisco’s OverlaySolution
The GoQAM is an integral component of the Overlay solution. The Overlay solution
uses Digital Broadband Delivery System (DBDS) technology to create a network in
which different conditional access (CA) systems can coexist in a coherent manner.
Overlay technology assumes that a PowerKEY DBDS network will be “laid over” an
existing but different cable network.
Important! The GoQAM is supported in SR 2.5/SR 3.5 (or later).
Depending on the system architecture, the GoQAM can be used in either headends
or hubs. The following illustrations are examples of typical Overlay environment
setups.
Overlay Environment Without a Multiplexer With an IRT
In an Overlay environment without a multiplexer (MUX), the Integrated Receiver
Transcoder (IRT) does the encryption for the non-Cisco set-tops.
The following graphic illustrates how Overlay technology interfaces to a non-Cisco
headend that uses a simple IRT. The IRT performs a number of functions including
Mediacipher encryption. With an IRT, clear and encrypted signals are available
through DHEI connectors on the IRT back panel.

System Overview
4004834 Rev D 3
Overlay Environment With a MUX
In an Overlay environment with a MUX, the Modular Processing System (MPS) does
the encryption for the non-Cisco set-tops. The following graphics illustrate how
Overlay technology interfaces to a non-Cisco headend that uses a multiplexer
followed by an MPS. The MPS performs Mediacipher Encryption and may perform
QAM modulation, depending upon the specific device.
Example 1:
Example 2:
Note: The MPS is being replaced by the SmartStream Encryptor Modulator (SEM).
As with the MPS, a number of different options are available for interfacing Overlay
technology with the SEM. Specific details can be obtained by contacting Cisco
Services.

Chapter 1 Introducing the GoQAM
4 4004834 Rev D
Features
The GoQAM provides many new digital broadcast features and innovations for your
system. The following table describes these features and innovations.
Feature Function
DVB ASI Input pairs Supports a maximum ASI data rate of 216 Mbps (MPEG
packet rate) at all four inputs
Accepts two pairs of inputs. Each pair consists of an
incumbent-encrypted stream and its corresponding clear
stream. The GoQAM extracts critical packets—those without
which video cannot be reconstructed—and encrypts them
using Cisco PowerKEY encryption technologies. The GoQAM
also extracts the corresponding critical packets from the
incumbent-encrypted stream. Later, the PowerKEY packets
and the incumbent-encrypted critical packets are multiplexed
with the portion of clear stream that has not been encrypted.
10/100BaseT Ethernet
Interface
Provides a control and management interface to the DNCS
Multiplexing
Functionality
Provides program and packet identifier (PID) remapping and
filtering
MPEG Stream
Management
Provides program clock reference (PCR) timestamp correction
Provides program specific information (PSI) reconstruction
Provides transport stream monitoring

Allows adaptive insertion rate control
Stream Encryption,
Conditional Access,
and Management
PowerKEY Native stream encryption mode
Allows PowerKEY Book One ECM Handling
Provides MPEG packet insertion and entitlement control
messages (ECMs)
Supports broadcast clear-to-air and interactive encrypted
PowerKEY modes
IF Version:
64/256 QAM IF
Output (2)
Provides a separate physical connector for each QAM output
(up to 2 )
Provides a 44 MHz fixed output
Supports International Telecommunications Union (ITU) J.83
Annex-A, and Annex-B, and Annex-C standards