Cisco GoQAM Installation And Operation Manual

GoQAM Modulator RF Output
and IF Output Hardware

Installation and Operati on 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

T rademark Acknowledgment s

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 Discl aimer

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 Informati on 147

Contents

4004834 Rev D v

Appendix A Technical Specif ications 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 F ollow Thes e Instructi ons

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.

Warni ng and Cautio n Icons

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.

Heed All Warnings

Adhere to all warnings on the product and in the operating instructions.

Avoid El ectric Shoc k

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, W ater, Moisture, Open Flam e

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.

Grounding This Pro duct (U.S .A. and Cana da Only)

Safety Plugs

If this product is equipped with either a three-prong (grounding pin) safety plug or a two­prong (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 18­gauge 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.

United States FCC C ompliance

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.

Canada EMI Regulat ion

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.

Document V ersi on

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.

1 Chapter 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

Diagram of Cisco’s Overlay Solution

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

System Overview

4004834 Rev D 5

Feature Function

RF Version:

64/256 QAM RF
Output (2)



Provides a separate physical connector for each QAM output
(up to 2)



Allows independent level control for each QAM signal



Allows an adjustable output center frequency range of
91 MHz to 869 MHz



Provides a switched filter bank for superior broadband
combined noise performance



Supports International Telecommunications Union (ITU) J.83
Annex-A, and Annex-B, and Annex-C standards

User Interface
Features

Allows local setting of RF power levels and display of diagnostic
and debug information through the front panel and user interface

Chapter 1 Introducing the GoQAM

6 4004834 Rev D

GoQAM Input Pairs

The GoQAM associates the DVB ASI inputs as pairs of clear and encrypted inputs
for Overlay purposes. This means that each DVB ASI input constitutes a dedicated
pair of clear and encrypted streams. Each pair carries a clear digital broadcast stream
on one input and its encrypted form on the other input. For example, ASI IN 1 and
ASI IN 2 carry the clear and encrypted forms of the same digital transport stream,
respectively.

GoQAM Input Pairs Diagram

RF GoQAM Example

The following illustration depicts the fixed input and output combinations for an
RF GoQAM.

Note: For the RF GoQAM, input pair 1 can only be mapped to RF OUT 1, and input
pair 2 can only be mapped to RF OUT 3.

IF GoQAM Example

The following illustration depicts the fixed input and output combinations for an
IF GoQAM.

Note: For the IF GoQAM, input pair 1 can only be mapped to IF OUT 1, and input
pair 2 can only be mapped to IF OUT 2.

Input/Output Process

4004834 Rev D 7

Input/Output Process

This section describes how the GoQAMs modulate, encrypt, and transmit the signals
they receive from external sources.

Input/Output Dia gram (RF Version)

The following diagram illustrates the stages of the input/output (I/O) process for
the RF GoQAM.

Note: The stage numbers correspond with the following table.

Input/Output Sta ge/Descript ion Table

The following table describes the stages of the I/O process of the RF GoQAM. The
numbers correspond to the above I/O diagram.

Stage Description

1 A pair of transport streams (a clear version and a third-party encrypted

version of the same stream) are input to the modulator.

2 The digital I/O board timestamps the MPEG packets in each stream, then

filters and routes them according to their PID values.

3 The digital I/O board selects the packets to pass from both the clear and

third-party encrypted streams.

4 PowerKEY encryption is added to selected clear packets and PID values are

remapped.

5 The clear and encrypted streams are synchronized.

6 An overlay output stream is created by muxing (multiplexing) the clear, S-A

encrypted, and third-party encrypted packets.

7 The output stream is modulated at 64 QAM or 256 QAM.

Chapter 1 Introducing the GoQAM

8 4004834 Rev D

Stage Description

8 The I/O board directs the transport stream to one of the two RF Agile output

converters and sends the signal through the RF network to the DHCTs.

This section provides the installation process and lists the detailed procedures in this
guide that correspond with each process step.

Important: To ensure proper installation, read this entire guide before starting
installation and then follow these processes in the order shown.

Input/Output Dia gram (I F V ersion)

The following diagram illustrates the stages of the input/output (I/O) process for
the IF GoQAM.

Note: The stage numbers correspond with the following table.

Input/Output Sta ge/Descript ion Table

The following table describes the stages of the I/O process of the IF GoQAM. The
numbers correspond to the above I/O diagram.

Stage Description

1 A pair of transport streams (a clear version and a third-party encrypted

version of the same stream) are input to the GoQAM.

2 The digital I/O board timestamps the MPEG packets in each stream, then

filters and routes them according to their PID values.

3 The digital I/O board selects the packets to pass from both the clear and

third-party encrypted streams.

4 PowerKEY encryption is added to selected clear packets and PID values

are remapped.

Input/Output Process

4004834 Rev D 9

Stage Description

5 The clear and encrypted streams are synchronized.

6 An overlay output stream is created by muxing (multiplexing) the clear,

S-A encrypted, and third-party encrypted packets.

7 The output stream is modulated at 64 QAM or 256 QAM and sent out one

of the two IF ports.

Chapter 1 Introducing the GoQAM

10 4004834 Rev D

Front Panel Overview

Front Panel Diagr am

This illustration shows the front panel components of each type of GoQAM.

The following table describes the front panel components.

Item Component Description

1 MAJOR ALARM

indicator

This LED is red and lights for a major alarm condition.
Major alarms occur for hardware or software conditions that
indicate a serious disruption of service or the
malfunctioning or failure of important circuits. The LED
goes off when all major alarms have cleared.

2 MINOR ALARM

indicator

This LED is yellow and lights for a minor alarm condition.
Minor alarms indicate a less critical error condition. The
GoQAM may continue to operate with some loss of
functionality. The LED goes off when all minor alarms have
cleared.

3 CW indicator This LED is yellow and lights when any one of the RF

carriers is set to continuous wave (CW) mode.

4 LCD alphanumeric

display screen

This screen displays status and operating screens controlled
by the front panel keys.

5

The Down Arrow key decrements a displayed value or
navigates through a set of displayed values. This key is only
active when the display has a flashing value, which
indicates that the value can be changed. This key is
primarily used for decreasing a displayed value such as
frequency or level.

Front Panel Overview

4004834 Rev D 11

Item Component Description

6

The Up Arrow key increments a displayed value or
navigates through a set of values. This key is only active
when the display has a flashing value, which indicates that
the value can be changed. This key is primarily used for
incrementing a displayed value such as frequency or level.

7

FREQ



RF Version: The Frequency key selects the frequency
display screen on which you can adjust the RF output
frequency for each of the RF carriers.



IF Version: The frequency is fixed at 44.00 MHz.

8

LEVEL



RF Version: The Level key selects the RF Output Level
screen on which you can adjust the RF output power
level and mute the RF output (42 dBmV to 56 dBmV).



IF Version: The Level key selects the IF Output Level
screen on which you can adjust the IF output power
level and mute the IF output (27 dBmV to 37 dBmV).

9

CW

The Continuous Wave (CW) key selects the Continuous
Wave Screen on which you can set the GoQAM modulator
to output either a modulated carrier or a continuous carrier
for each of the RF carriers.

CW mode is used for testing and not for normal operation.

10

OPTIONS

The Options key scrolls through status information and
setup options.

11

ENTER

The Enter key saves configuration changes to nonvolatile
memory.

12

RF SEL



RF Version: The RF Port Selection (RF SEL) key selects
one of the RF outputs.



IF Version: Selects one of the IF outputs.

Chapter 1 Introducing the GoQAM

12 4004834 Rev D

Back Panel Overview

Back Panel Diagram

This illustration shows the back panel components for each type of GoQAM.

Back Panel Diagram

Back Panel Compon ents

The following table describes the back panel components.

Back Panel Compon ents

Important: The cooling fans for the GoQAM are mounted on the side panel.

Item Component Description

1 Power Switch On/off rocker-type power switch

2 Fuse Holder 4.0 A SLO BLO 250 V fuse (Cisco part number 188106)

3 AC Power Inlet IEC 320-conductor grounded outlet

4 RF OUT and

IF OUT Ports

F-connectors for RF or IF output, 75 Ω

Note: The RF GoQAM uses only RF OUT ports 1 and 3.

5 Gigabit Ethernet Port

LEDs

Not used (disabled) in the Overlay solution

Back Panel Overview

4004834 Rev D 13

Item Component Description

6 Gigabit Ethernet port Not used (disabled) in the Overlay solution

7 DVB ASI INPUTS 1-4

Female BNC, 75 Ω connector. Allows for the input of
MPEG-2 transport stream data at a maximum rate of 216
Mbps

8 DVB ASI LEDs Data LEDs 1 through 4 light when the DVB ASI Input

ports are receiving valid MPEG-2 transport stream packets

9 CRAFT PORT For Cisco diagnostic use only

10 10/100BaseT port Ethernet port shares data with DNCS Ethernet hub

11 GND Ground screw for grounding the GoQAM

Back Panel Indicat or Lights

The following illustration and table show the back panel indicator lights.

Item Indicator Light Description

1 ACTIVE (green) Not used (disabled) in the Overlay solution

2 LINK (green) Not used (disabled) in the Overlay solution

3 DATA 1 (green) Lights when the DVB ASI Input 1 port is receiving

valid MPEG-2 transport stream (TS) packets

4 DATA 2 (green) Lights when the DVB ASI Input 2 port is receiving

valid MPEG-2 TS packets

5 DATA 3 (green) Lights when the DVB ASI Input 3 port is receiving

valid MPEG-2 TS packets

6 DATA 4 (green) Lights when the DVB ASI Input 4 port is receiving

valid MPEG-2 TS packets

7 LINK (yellow) Lights when a valid 10/100BaseT Ethernet link

connection exists

8 ACTIVE (green)

Lights when data traffic is on the 10/100BaseT Ethernet

link

4004834 Rev D 15

Introduction

This chapter describes how to install the GoQAM into a rack and where to
connect the GoQAM to the other components within the Overlay
environment. The connections used for the GoQAM vary according to its
use in your system.

Note: Refer to Technical Specifications (on page 149) for additional
technical specifications and requirements to help you install and configure
the GoQAM in your system.

2 Chapter 2

Installing the GoQAM

In This Chapter

 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 2 Installing the GoQAM

16 4004834 Rev D

Installation Process Summary

Before Y ou Begin

This process assumes that you have already installed the GoQAM software on the
DNCS. Refer to the release notes and installation instructions for your GoQAM
release for detailed instructions. Also be sure that you have access to the Digital
Network Control System Online Help for your system release before installing the
GoQAM.

GoQAM Installation Pr ocesses

The following process summary provides the recommendations for a GoQAM
installation.

Stage Process See Procedure

1 Review system requirements and

technical specifications.

N/A

2 Consult your Bandwidth Management

Plan and the GoQAM input and
output specifications to allocate your
bandwidth resources properly.

N/A

3 Unpack and inspect the GoQAM.



Unpack and Inspect the GoQAM
(on page 18)

4 Record the MAC address from the

label located on the underside of the
GoQAM unit.



Record the MAC Address (on page

19)

5 Install the GoQAM into a rack.



Stacking Guidelines (on page 20)



Install the Modulator Into a Rack
(on page 24)

6 Connect the GoQAM to an earth

ground and then the power source.



For the 120/230 V AC GoQAM,
connect the power cord.



For the 48V DC GoQAM, connect
the power wires to the DC power
inlet.



Connect Power Sources (on page

27)

7 Connect other network devices to the

GoQAM, except the RF out ports.



Connect the DVB ASI Input Ports
(on page 29)



Connect the 10/100BaseT Ethernet
Port (on page 31)

Installation Process Summary

4004834 Rev D 17

Stage Process See Procedure

8 Define the MPEG sources and

provision the GoQAM using DNCS
Element Provisioning according to
your network wiring diagram.



Provision the RF GoQAM (on
page 37)



Provision the IF GoQAM (on page

53)



Digital Network Control System
Online Help

9 Power on the GoQAM N/A

10 Ensure that the GoQAM boots

correctly and check for alarms from the
front panel.



Understand the Boot Process (on
page 78)



Troubleshooting Alarm Messages
(on page 134)



Troubleshooting Boot Screen Error
Messages (on page 143)

11 Connect the RF or IF output ports.

Connect the RF OUT or IF OUT Ports
(on page 33)

12 Set the power output level in

accordance with your network wiring
diagram and spectrum analyzer
measurements.



Adjust the RF Output Level of a
Selected Carrier (on page 87)



Adjust the IF Output Level of a
Selected Carrier (on page 110)

13 If sessions have been defined for the

GoQAM path, verify the correct
session count by pressing the
OPTIONS button.



RF: Viewing the Session Count (on
page 91)



IF: Viewing the Session Count (on
page 114)

14 If encrypted, check the program count.



RF: Viewing the Program Count
(on page 91)



IF: Viewing the Program Count (on
page 114)

15 Verify video and audio from a local

DHCT.

See the post-upgrade procedures for
your current System Release contained
in the upgrade installation
instructions.

Chapter 2 Installing the GoQAM

18 Error! No text of specified style in document.

Unpack and Inspect the GoQAM

Carrier’s Respo nsibili ty

Cisco thoroughly inspects and carefully packs all products before shipment. The
carrier is responsible for safe shipping and delivery.

 If there are any missing parts or if there is damage to the product contact Cisco

Services.

 Retain all boxes for future equipment shipping needs. The boxes are specifically

designed for shipping the GoQAM.

Unpacking and Inspe cting Proce dure

Complete the following steps to unpack and inspect the modulator.

1 Review the Safety Precautions.
2 Inspect the shipping carton for visible damage.
3 Open the shipping carton.
4 Remove all packing material.
5 Inspect the product for visible damage.
6 Inspect for loose items that may indicate concealed damage.
7 Inspect for missing parts using the packing slip as a guide.
8 Go to Record the MAC Address (on page 19).

Record the MAC Address

Error! No text of specified style in document. 19

Record the MAC Address

This section contains instructions for recording the MAC address as part of the
installation process.

Recording the MAC Addr ess

1 Unpack and inspect the modulator.
2 Locate the label containing the MAC addresses on the underside of the chassis.

Important! The GbE MAC addresses are typically the MAC address of the

modulator plus 1 (one).

Examples:

 GQAM MAC Address: 00:02:de:41:51:03
 GbE MAC Address (Main): 00:02:de:41:51:04
 GbE MAC Address (Backup): 00:02:de:41:51:05

3 Record the MAC addresses here:

- GQAM MAC Address: ______________________________________

- GbE MAC Address (Main): _______________________________________

- GbE MAC Address (Backup): _____________________________________

Important! You will need these MAC addresses for provisioning (configuring)
the DNCS.

4 Go to Stacking Guidelines (on page 20).

Chapter 2 Installing the GoQAM

20 4004834 Rev D

Stacking Guidel ine s

The GoQAM is a high-density, high performance device for digital broadband data
delivery. One GoQAM performs the services of two QAM modulators. This space­saving feature makes the GoQAM the device of choice for contemporary digital
broadband delivery systems.

Providing proper ventilation and cooling for the modulator is mandatory. You can
stack up to 32 GoQAM devices in a standard 40-rack unit (RU) equipment rack if
you read and carefully follow the guidelines provided in this section and later in this
chapter.

Each GoQAM contains three dual fan packs that provide forced air cooling. These
fan packs, located on the side of the unit, pull air across the internal circuitry to
remove heat.

Important! In order for the fans to operate correctly, you must install each GoQAM
using the rack mount brackets included with the unit. These brackets contain
notched cutout sections to allow for clearance so that air can enter and leave the unit
without restriction.

When you install the GoQAM in the rack using the rack mounts provided, you can
install them directly above and below each other with no requirements for vented
spacers. Using these rack mounts also provides support for the modulator. The
GoQAM is not intended to be suspended or “hung” in the rack by only mounting the
front bezel support.

Controlling Operat ing Temperature

CAUTION:

Cisco headend equipment is designed to operate in a maximum 122°F (50°C)
environment. Specifically, this means that the air temperature at the air inlet
of any GoQAM must never exceed 122°F (50°C).

Each GoQAM draws up to 151 W of input power and a total of 515 BTU/hr. For a
full rack with 32 units, the sum total is 4832 W per rack, or 16,480 BTU/hr. You
should make your HVAC considerations based on these calculations.

Controlling Exhaust Air

Exhaust air management is the key to cooling multiple modulators in a custom rack
configuration. Inlet air temperature should be as cool as possible and should never
exceed 122°F (50°C). Exhaust air should have little or no restrictions. Obstructions
such as cabling or other devices that block airflow to the side or top of the rack
should be avoided.

Stacking Guidelines

4004834 Rev D 21

Considerations When Using Side by Side Equipment Racks

Often, side-by-side equipment racks will not include an internal wall between them.
You should take extreme care when installing modulators in these types of systems.
There is approximately an 18°F (10°C) rise from inlet air temperature to exhaust air
temperature on a GoQAM. This rise in temperature could have a cumulative effect
on temperature from one rack to the adjacent one. You must take extreme care not to
exceed the 122°F (50°C) maximum inlet air temperature requirement in these
situations.

Considerations When Using Racks with a Wall on One Side

Rack installations that have the outer wall or side of the rack in place on the exhaust
side of the GoQAM should note that without sufficient airflow through the rack, the
heated exhaust air may re-circulate back to the input side of the GoQAM. Depending
on the situation, this re-circulation air could eventually exceed the specified 122°F
(50°C) maximum.

Measuring the Inl et Air Temperature

If you are concerned about inlet air temperature, you should measure the
temperature of the inlet air in the actual rack as you plan to use it. You should have
all cabling in place and all adjacent units installed and running.

Important! Opening the door on the back panel of the rack can have an adverse effect
on the managed airflow. If access to the door on the back panel is not controlled, you
should take the inlet air temperature with the back panel door open since, in most
instances, opening the door will re-direct the airflow in an adverse manner.

Stacking Consider ations

You have two main options for stacking GoQAMs in a rack. The option you choose
depends on your system requirements. One option is to stack the GoQAMs in a rack
containing a top-mounted exhaust fan with vented panels on the front and back. The
second option is to place a top-vented rack over a floor plenum forced air vent. The
requirements for these two stacking options are described next in this section.

Option 1 – Using a Rack With a Top-Mounted Exhaust Fan

This stacking option uses a 40 RU configuration containing up to 32 GoQAMs. The
remaining 8 RUs are configured with 4 RUs at the bottom and 4 RUs at the top.

The 4 RU space at the bottom is covered with a vented panel on both the front and
the back. This panel allows air to freely enter the rack to cool the modulators.

Chapter 2 Installing the GoQAM

22 4004834 Rev D

The 4 RU space at the top is covered with a closed panel. This option uses an exhaust
fan located on top of the rack to draw the heated air upward and out of the rack. The
4 RU space at the top allows the ventilation space needed for the exhaust fan to
operate efficiently. The exhaust fan should be chosen so that a minimum of 600 cubic
feet per minute (cfm) flows through the rack with 2000 cfm being the ideal amount.

Example:

Stacking Guidelines

4004834 Rev D 23

Option 2 – Using a Rack With Floor Plenum Forced Air Cooling

This stacking option also uses a 40 RU configuration containing up to 32 GoQAMs.
In Option 2, however, the lower 4 RU space is covered with a solid panel instead of a
vented one. The upper 4 RU space is vented along with the entire top of the rack.
The floor plenum forced airflow must also be a minimum of 600 cfm with 2000 cfm
being the ideal amount.

Example:

Chapter 2 Installing the GoQAM

24 4004834 Rev D

Install the Modulator Into a Rack

The front bezel of the GoQAM mounts to the front of the equipment rack. The
GoQAM fits into an EIA RS-310 rack mount.

Important! You must read the preceding section, Stacking Guidelines (on page 20),
before installing the modulators into the rack.

Installation Req uirements

This section lists the power, rack, and environmental conditions necessary for
installation.

Power Requirements Table

The following table describes the power specifications for the GoQAM.

Item Specification

Supply Voltage



90V to 130V AC @ 47 to 63 Hz (AC unit)



180V to 264V AC @ 47 to 63 Hz (AC unit)



–42V to –57V DC (DC unit)

Fuses



4.0 A SLO BLO 250V (AC unit)



6.3 A SLO BLO 250V (DC unit)

Line Frequency



47 Hz to 63 Hz (AC unit only)

Power Required



RF GoQAM: 155 VA (typical)



IF GoQAM: 85 VA (typical)

Power Dissipated



RF GoQAM: 151 Watts (typical)



IF GoQAM: 81 VA (typical)

In Rush Current



35 amps maximum, Vin = 130V AC (AC unit)



75 amps maximum, Vin = 264V AC (AC unit)



15 amps maximum, Vin = -57V DC (DC unit)

Install the Modulator Into a Rack

4004834 Rev D 25

Rack Requirements Table

Item Specification

Rack Mount Type EIA RS-310

Height 1.75 in./44.45 mm

Width 19 in./482.6 mm

Depth 22.5 in./571.5 mm

Weight 13.5 lb./5.4 kg

Environmental Requirements Table

Item Specification

Operating Temperature 0° to 50°C (32° to 122°F)

CAUTION:

Avoid damage to this product! Your warranty
is void if you operate this product above the
maximum specified operating temperature.

Use caution when installing wiring and racks
to avoid obstruction of air flow. The
obstruction can occur at the side air vents of
the GoQAM or the vent fans at the GoQAM
side panel.

Important! You must use the supplied notched rack

mounts (Cisco part numbers 734845 and 734846) to
mount this modulator into the rack. These rack mounts
allow correct air circulation through the unit.

Storage Temperature Range -10° to 70°C (14° to 158°F)

Operating Humidity 5 to 95%, non-condensing

Vibration Susceptibility No data errors with a chassis vibration of 0.5 Gs. No

data errors with a vibration frequency of 10 Hz to 400
Hz

Electrostatic Shock Susceptibility No damage sustained from five discharges of 15 KV IEC

electrostatic discharge model (150pF + 150 Ω) to all
exposed connections

Chapter 2 Installing the GoQAM

26 4004834 Rev D

Installing the Mod ulator i nto a Rack

CAUTION:

Do not tangle or strain interconnecting cables.

Use caution when installing wiring and racks to avoid obstruction of airflow
into the side air vents of the GoQAM or out of the vent fans on the side of the
GoQAM.

IMPORTANT: You must use the supplied notched rack mounts to provide
additional support and to allow correct air circulation through the unit.

1 Install the rack mounts.

Important: The supplied rack mounts (Cisco part numbers 734845 and 734846)

must be used. When you use the supplied rack mounts, you can install these
modulators above or below each other in the rack with no space required. These
rack mounts provide additional support along with the following features:

 Attaches directly to the rack
 Allows you to slide modulators partially out of the rack for service
 Allows appropriate air circulation throughout the unit

2 Place the modulator in the rack.
3 Insert a mounting screw through each of the four-bezel mounting holes on the

front panel of the GoQAM and then into the rack.

4 Firmly tighten each mounting screw.
5 Go to Connect Power Sources (on page 27).

Connect Power Sources

4004834 Rev D 27

Connect Power Sources

This section contains instructions for connecting the DC and AC power sources to
the modulator.

Connecting an Eart h Ground

Complete the following steps to connect an earth ground to either the DC or AC
versions of the GoQAM.

CAUTION:

The 48 V DC GoQAM must be connected to an earth ground.

1 Place a ground wire onto the ground lug (marked GND) on back of the GoQAM;

then, use your fingers to tighten the ground lug to secure the ground wire.

2 Connect the other end of the ground wire to the rack or earth ground.

Connecting a DC Po wer Source

Complete the following steps to connect a DC power source to the 48 V DC Dual SFP
GQAM.

1 Verify that the DC power source is set to the Off position.
2 Insert the wires from the DC power source into the terminal block connector. Use

a small flat-blade screwdriver to tighten the screws at the top of the terminal
block connector to secure the wires.

Chapter 2 Installing the GoQAM

28 4004834 Rev D

3 Insert the terminal block connector into the terminal block on the back panel of

the 48 V DC GoQAM.

4 Keep the DC power source set to the Off position until you are ready to power

on the modulator.

5 Go to Connect the DVB ASI Input Ports (on page 29).

Connecting an AC Pow er Source

Complete the following steps to connect an AC power source to the 120/230 V AC
GoQAM.

1 Verify that the power switch on the back panel is placed in the Off position.
2 Connect the power cord to the AC power inlet on the back panel of the 120/230

V AC GoQAM.

3 Connect the other end of the power cord to an AC electrical outlet.
4 Keep the power switch in the Off position until you are ready to power on the

device.

5 Go to Connect the DVB ASI Input Ports (on page 29).

Connect the DVB ASI Input Ports

4004834 Rev D 29

Connect the DVB ASI Input Ports

Description

The GoQAM uses ASI input pairs to receive data from ASI-compliant transmitting
devices such as Integrated Receiver Transcoders (IRTs) and MPEG multiplexers.
These ASI inputs conform to the DVB document A010. The DVB ASI Input ports are
BNC-type connectors and connect to 75 Ω coaxial cables. Each DVB ASI Input port
allows for the input of MPEG-2 transport stream (TS) data at a maximum rate of 216
Mbps.

Location of DVB ASI Input Ports

The following illustration shows an example of an IF GoQAM connected to DVB ASI
sources.

Chapter 2 Installing the GoQAM

30 4004834 Rev D

Connecting the DVB ASI Ports

Refer to your network wiring diagram to cable the GoQAM in accordance with your
bandwidth allocation plan.

Follow these steps to connect each of the DVB ASI Input ports.

1 Locate the output (DHEI or DVB ASI) on the back of an output device.

Important: If you are connecting an IRT or other DHEI device, you must first

connect a DHEI cable to a DHEI-to-ASI converter before connecting to the
GoQAM.

2 To connect input pair 1, connect clear feed #1 to ASI input port 1 and encrypted

feed #1 to ASI input port 2.

Note: The maximum recommended length for the cable is 100 meters.

3 To connect input pair 2, connect clear feed #2 to ASI input port 3, and encrypted

feed #2 to ASI input port 4.

Note: The maximum recommended length for the cable is 100 meters.

4 Repeat steps 2 and 3 for all DVB ASI inputs according to your system’s

specifications and requirements.

5 Go to Connect the 10/100BaseT Ethernet Port (on page 31).

Connect the 10/100BaseT Ethernet Port

4004834 Rev D 31

Connect the 10/100BaseT Ethernet Port

Description

The GoQAM shares data with the DNCS through an ATM switch, a router, an
Ethernet hub, and an Ethernet port. An Ethernet connection enables the DNCS to
perform software downloads, provision the GoQAM, set up broadcast sessions,
monitor alarms, and check system performance.

Note: Connect the 10/100BaseT Ethernet port on the GoQAM to an Ethernet hub as
part of an Ethernet connection. Do not connect it directly to a DNCS workstation or
another PC.

Location of 10/10 0BaseT Eth ernet Port

The following illustration shows an example of a 10/100BaseT Ethernet connection
for the IF GoQAM.

Chapter 2 Installing the GoQAM

32 4004834 Rev D

Connecting the 10/ 100BaseT Et hernet Por t

Follow these steps to connect the GoQAM to the Ethernet network.

1 Connect the DNCS to the ATM switch using multi-mode fiber.
2 Connect the ATM switch to the router using single mode fiber.
3 Connect the router to the 10/100BaseT Ethernet hub using CAT-5 Ethernet

10/100BaseT wiring with RJ-45 connectors.

4 Connect the 10/100BaseT port on the GoQAM to the 10/100BaseT Ethernet hub

using CAT-5 Ethernet 10/100BaseT wiring with RJ-45 connectors.

Note: Use a screened or shielded cable to connect the GoQAM to the
10/100BaseT Ethernet hub.

5 Your next step is to provision the GoQAM on the DNCS. See Provision the RF

GoQAM (on page 37) or Provision the IF GoQAM (on page 53), for further

details about provisioning the GoQAM on the DNCS. Then, go to step 6.

6 After your have provisioned the GoQAM on the DNCS, power on the GoQAM

to ensure that the GoQAM boots correctly and check for alarms from the front
panel.

7 Go to Connect the RF OUT or IF OUT Ports (on page 33).

Connect the RF OUT or IF OUT Ports

4004834 Rev D 33

Connect the RF OUT or IF OUT Por ts

The back panel of the GoQAM contains ports that are labeled either RF OUT or IF
OUT depending on the model of GoQAM you are using. The RF OUT or IF OUT

ports of the GoQAM should be connected to a system of combiners, through the
cable system, and eventually to subscribers’ DHCTs. Each RF OUT or IF OUT port
provides for the transport of MPEG-2 transport stream (TS) data. The RF OUT and IF
OUT ports use F-connectors and 75 Ω coaxial cable interfaces.

Note: The Overlay solution uses only two of the RF OUT ports (RF OUT 1 and RF
OUT 3) on the RF GoQAM modulator.

CAUTION:

Turning on the GoQAM with default RF output level may cause RF
interference with the services of other units connected to the network.
Therefore, set the RF output frequency and RF output level before you
connect any RF OUT ports to the network.

Important! We strongly recommend that you configure and adjust
frequencies from the Set Up GoQAM window on the DNCS. See

Provision GoQAMs on the DNCS (on page 46) or Provision an IF
GoQAM on the DNCS (on page 71) for detailed instructions.

Location of RF OUT Por ts

The following illustration shows an example of two of the four RF OUT ports
connected to the distribution plant.

Note: The RF GoQAM uses only the RF OUT 1 and RF OUT 3 ports.

Chapter 2 Installing the GoQAM

34 4004834 Rev D

Location of IF OUT P orts

The following illustration shows an example of the two IF OUT ports on the IF
GoQAM connected to the upconverter.

Connecting the RF O ut or IF OUT Por ts

Follow these steps to connect the RF OUT or IF OUT ports.

CAUTION:

Establish the RF output level and the IF output level before you
connect the RF OUT or IF OUT ports to the distribution plant.

Important: We strongly recommend that you configure and adjust frequencies
from the Set Up GoQAM window on the DNCS. See Provision the RF
GoQAM (on page 37), or Provision the IF GoQAM (on page 53) for detailed
instructions.

1 Refer to your network wiring diagram to connect the GoQAM properly.
2 Locate the RF OUT or IF OUT ports on the back panel of the GoQAM.
3 Connect one end of a 75 Ω coaxial cable to each port to be used for the GoQAM.
4 Verify that you have established the correct output level for the RF OUT or the IF

OUT ports by completing the following steps:

a Connect the GoQAM to a spectrum analyzer to measure radio frequency

levels.

b Set the RF or IF output levels from the front panel of the GoQAM.
c Provision the GoQAM from the DNCS.

Notes:

 For the RF GoQAM, see Adjust the RF Output Level of a Selected Carrier (on

page 87) and Provision GoQAMs on the DNCS (on page 46) for more
information.

 For the IF GoQAM, see Adjust the IF Output Level of a Selected Carrier (on

page 110) and Provision an IF GoQAM on the DNCS (on page 71) for more
information.

Connect the RF OUT or IF OUT Ports

4004834 Rev D 35

5 Choose one of the following options:

 For the RF GoQAM, connect the other end of each 75 Ω coaxial cable to the

distribution plant.

 For the IF GoQAM, connect the other end of each 75 Ω coaxial cable to an

upconverter.

4004834 Rev D 37

Introduction

This chapter provides examples and descriptions of the DNCS graphical
user interfaces (GUIs) used for provisioning (configuring) the RF
GoQAM in an Overlay environment. Provisioning the GoQAM prepares
the device so that the DNCS recognizes it and so that it operates
properly.

Important! Your system must be operating SR 2.4/SR 3.4 (or later) to
use a GoQAM on your system. You must also have the Overlay feature
enabled.

Note: See Technical Specifications (on page 149) for the technical
specifications of the RF GoQAM and consult your network wiring
diagram when you provision the GoQAM to ensure a proper allocation
of bandwidth.

For more information about the DNCS and operating the DNCS
software, refer to the Digital Network Control System Online Help for your
system release.

3 Chapter 3

Provision the RF GoQAM

In This Chapter

 Understand the RF GoQAM GUIs ..................................................... 38



Provision GoQAMs on the DNCS ...................................................... 46

Chapter 3 Provision the RF GoQAM

38 4004834 Rev D

Understand the RF GoQAM GUIs

This section provides examples and descriptions of the GUIs used for provisioning
the RF GoQAM as a DBDS network element in an Overlay environment.

Important! Actual GUIs may differ slightly from the GUIs presented in this guide.

Understanding the RF GoQAM GUIs

Use the DNCS RF GoQAM GUIs to provision the RF GoQAM on the DNCS. The
main GUI is the Set Up RF GoQAM window. The Set Up RF GoQAM window
contains the following fields:

 Basic Parameters
 Advanced Parameters
 Connectivity

Note: This section includes examples and descriptions of all of the areas within these
fields.

Understanding Basi c Paramet ers

The Basic Parameters fields allow you to identify the GoQAM, assign it to a
headend, and specify the modulation type for each of the RF Out ports. If you want
to view the Basic Parameters fields while reading this section, follow these steps to
examine the Set Up RF GoQAM window.

1 From the DNCS Administrative Console, select one of the following tabs:

 For SR 2.7/3.7/4.2 and later, click the Network Element Provisioning tab.
 For SR 2.5/3.5/4.0 and earlier, click the Element Provisioning tab.

2 Click QAM. The QAM List window opens.

Understand the RF GoQAM GUIs

4004834 Rev D 39

3 Select File > New > GOQAM > RF GOQAM. The Set Up RF GoQAM window

opens with the Basic Parameters tab to the forefront and displays the Basic
Parameters fields as shown in the following example.

Basic Parameters

The following table lists the Basic Parameters fields and their descriptions.

Field Description

Headend Name Displays the name of the headend with which the modulator

is associated

QAM Name Displays the name used for the modulator

IP Address Displays the IP address of the Ethernet interface through

which the DNCS manages and controls the modulator

Modulation Type Allows you to specify one of the following modulation types

for each of the carriers:



ITU J.83 Annex B (6 MHz)



ITU J.83 Annex C DAVIC/DVB
(6 MHz)

Note: The default value is ITU J.83 Annex B (6 MHz).

Chapter 3 Provision the RF GoQAM

40 4004834 Rev D

Field Description

Administrative State Specifies whether the modulator is active within the system.

The values are:



Offline: Default



Online: Active

MAC Address Displays the MAC address of the GoQAM

Subnet Mask Displays the IP subnet mask assigned by the system

administrator

Default Gateway Displays the network default gateway assigned by the

system administrator

Ports

The following table lists the Ports field descriptions.

Field Description

Reserved TSID Range Identifies the available range of Transport Stream IDs (TSIDs)

Input Block 1 ASI 1 Clear
Transport Stream ID

Identifies the Transport Stream ID for input block 1 at ASI 1

Input Block 2 ASI 3 Clear
Transport Stream ID

Identifies the Transport Stream ID for input block 2 at ASI 3

Port to Hubs Allows you to specify which hub is associated to any selected

RF output port. The default is all hubs under the defined
headend

RF Out Parameters

The following table lists the RF OUT port (1 – 2) field descriptions.

Note: Overlay technology uses only two of the RF OUT ports on the RF GoQAM.

Field Description

Modulation Displays the modulation format of the individual carriers

The default is 64-QAM for ITU J.83 Annex B.

Transport Stream ID Displays the identifier of the transport stream ID for each RF

Out module

Understand the RF GoQAM GUIs

4004834 Rev D 41

Field Description

Channel Center Frequency
(MHz)

Displays the frequency assigned to each carrier (range is 91
MHz to 869 MHz). Valid frequencies use the following format,
with XXX representing a number from 91 to 869:



XXX.000



XXX.25



XXX.75

Continuous Wave Mode Provides an unmodulated RF carrier

Note: Continuous wave mode may be selected for each carrier.

Mute RF Output Disables the RF output. May be selected for each carrier.

Disabled Prevents the DNCS from setting up any additional sessions on

this RF output if the DNCS is choosing QAM resources. Existing
sessions are not affected and continue to function as expected.
May be selected for each RF output.

Interleaver Depth Allows you to select the Interleave setting based on the type of

set-top you are using on your system. Interleaving is a
technique to overcome correlated channel noise. Interleaving
spreads out bursts of errors to remain within the error­correcting ability of a device.

Function Keys

The following function keys appear on the Set Up GoQAM window.

Key Function

Save Saves changes to settings and closes the Set Up GoQAM window

Apply Makes changes to settings without closing the Set Up GoQAM

window

Cancel Closes the Set Up GoQAM window without saving changes that

have not been previously applied to settings

Help Opens the DNCS Online Help

Chapter 3 Provision the RF GoQAM

42 4004834 Rev D

Understanding Adv anced Parameters

The Advanced Parameters fields of the Set Up RF GOQAM window allow you to
select the configuration file. To view the Advanced Parameters fields while reading
this section, click the Advanced Parameters tab in the Set Up RF GOQAM window.

The following diagram shows an example of the Advanced Parameters fields of the
Set Up RF GOQAM window.

Advanced Parameters

The following table lists Advanced Parameters field descriptions.

Field Description

Configuration File Name Displays the name of the configuration file used by the RF

GoQAM to determine whether it is running the correct
version of application code

Select Opens the File Selection Dialog window so that you can

specify the configuration file for the selected RF GoQAM.

Understanding the File Select ion Dialog Screen

The File Selection Dialog screen allows you to specify the configuration file for the
RF GoQAM. To view the File Selection Dialog screen while reading this section, click
the Select button on the Advanced Parameters tab.

Understanding the BOOTP/TFTP Process

The BOOTP/TFTP process allows the GoQAM, after power on or reset, to request an
IP address and receive configuration parameters, application downloads, and
provisioning from the network BOOTP server. The DNCS, which is a BOOTP server,
uses a BOOTP reply to assign an IP address to the GoQAM if the unit is provisioned
in the DNCS database.

The configuration file selected in the File Selection Dialog window is included in the
BOOTP reply. The GoQAM uses the information in the configuration file to
determine whether it is running the correct version of application code. If the
GoQAM is not running the correct version of application code, it requests the correct
image file(s) from the DNCS.

Understand the RF GoQAM GUIs

4004834 Rev D 43

The following diagram shows an example of the File Selection Dialog window.

Function Keys

The following function keys appear in the File Selection Dialog screen.

Key Function

OK Places the selected file name into the Configuration File Name field

and closes the File Selection Dialog window

Filter Enables the contents of the directory to display in the Directories

and Files fields

Cancel Closes the File Selection Dialog window without changing the

original settings

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Understanding Con nectivit y

The Connectivity fields of the Set Up RF GoQAM window allow you to specify the
input device connected to each of the Input ports on the GoQAM.

Note: When you first provision the RF GoQAM, the Connectivity fields are
accessible only after you click Apply or Save from the Set Up RF GOQAM window.
Thereafter, the Connectivity fields are accessible for viewing or modification.

To view the Connectivity fields while reading this section, click the Connectivity tab
in the Set Up RF GOQAM window.

The following diagram shows an example of the Connectivity fields of the Set Up RF
GOQAM window.

Understand the RF GoQAM GUIs

4004834 Rev D 45

Connectivity

The following table lists the Connectivity field descriptions.

Field Description

QAM Name Identifies the name of the selected RF GoQAM and allows you

to specify the Input (ASI) Port (1 or 3)

Headend Name Identifies the headend in which the input device exists

Device Type Identifies the type of input device, such as an Automux or IRT

to which the RF GoQAM is connected

Device Name Identifies the name of the input device to which the RF GoQAM

is connected

Port Number Identifies the port number of the device that is connected to the

RF GoQAM. The server should be entered in the DNCS as a
generic MPEG source. Create as many ports as are available for
the server and connect to the RF GoQAM

Show TSIDs/IPs Displays the Transport Stream (TS) IDs and Internet Protocol

addresses (IPs)

Show (slot, port) Displays the slot and port of the card connected to the RF

GoQAM

Legend Displays a group of icons that represent network elements that

may be displayed in the graphical drawing area

Chapter 3 Provision the RF GoQAM

46 4004834 Rev D

Provision GoQAMs on the DN CS

In order for the RF GoQAM to operate properly as a network element within the
DBDS, you must provision the RF GoQAM on the DNCS. This section provides
procedures for provisioning an RF GoQAM on the DNCS.

Before Y ou Begin

Before you begin to provision the GoQAM on the DNCS, you need the following
information:

 IP address of the GoQAM
 Physical (MAC) address of the GoQAM
 Name you need to assign to the GoQAM
 Headend to which you need to assign the GoQAM
 RF frequencies for each output port
 Modulation type this GoQAM will use
 Transport Stream IDs for each port of the GoQAM
 Interleaver Depth for this GoQAM

Provisioning an R F GoQAM on the DNC S

Follow these steps to provision a new RF GoQAM or to adjust the settings for an
existing RF GoQAM on the DNCS.

1 Verify that you have provisioned the RF GoQAM in accordance with your

network wiring diagram and the input/output specifications for the RF GoQAM
(see Technical Specifications (on page 149)) and other network devices.

Note: Refer to the Digital Network Control System Online Help for more
information about provisioning network elements.

2 From the DNCS Administrative Console, select one of the following tabs:

 For SR 2.7/3.7/4.2 and later, click the Network Element Provisioning tab.
 For SR 2.5/3.5/4.0 and earlier, click the Element Provisioning tab.

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3 Click QAM. The QAM List window opens.

4 Choose one of the following options:

 To provision a new RF GoQAM, go to step 5.
 To change the settings for an existing RF GoQAM, go to step 7.

5 From the QAM List select File >New > GOQAM > RF GOQAM. The Set Up RF

GOQAM window opens.

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6 Enter the required configuration information into the blank fields on the Basic

Parameters tab in the Set Up RF GOQAM window, then go to step 9.

Important: Be sure to associate the port with a hub by clicking the Port to Hubs
button to open the RF Output Port window.

7 From the QAM List, highlight an RF GoQAM in the list, select File > Open. The

Set Up RF GOQAM window opens with the Basic Parameters tab to the forefront
displaying the Basic Parameters configuration fields.

8 Enter or change the desired information in the Basic Parameters fields.

Important: Be sure to associate the port with a hub by clicking the Port to Hubs

button to open the RF Output Port window.

Notes:

 See the Basic Parameters field descriptions, earlier in this section, for

descriptions of each field.

 Refer to the Digital Network Control System Online Help for your system

release for more details about required DNCS procedures.

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9 Click the Advanced Parameters tab. The Set Up RF GOQAM window opens

with the Advanced Parameters tab to the forefront displaying the Advanced
Parameters configuration fields.

10 Enter or change the desired information in the Advanced Parameters fields.

Notes:

 See the Advanced Parameters field descriptions, earlier in this section, for

more details.

 Refer to the Digital Network Control System Online Help for your system

release for more details about required DNCS procedures.

11 To define the Configuration File Name, click Select. The File Selection Dialog

window opens.

12 Enter the configuration file in the Selection field; then, click OK. The File

Selection Dialog window closes.

Note: See the File Selection Dialog tab description, earlier in this section for
more information.

13 Choose one of the following options:

 To provision the connectivity settings for a new RF GoQAM, go to step 14.
 To adjust the connectivity settings for an existing RF GoQAM, go to step 15.

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14 On the Set Up GOQAM window, click Apply.

Results:

 The system saves the settings for the new RF GoQAM.
 The Connectivity tab becomes sensitized.

Note: When you first provision the RF GoQAM, the Connectivity tab is
accessible only after you click Apply or Save from the Set Up GOQAM window.
Thereafter, the Connectivity tab is accessible for viewing or modification.

15 Click the Connectivity tab. The Set Up RF GOQAM window opens with the

Connectivity tab to the forefront displaying the Connectivity configuration
fields.

16 Select the RF GoQAM input port you want to connect to the network.
17 Select the device you want to connect to the RF GoQAM in the Connect To fields

of the Connectivity tab; then, click Save. The QAM List updates to include the RF
GoQAM.

Notes:

 The fields available in the Connect To panel of the Connectivity tab vary

according to which device is selected.

 See the Connectivity field descriptions, earlier in this section, for descriptions

of each field.

 Refer to the Digital Network Control System Online Help for your system

release for more details about required DNCS procedures.

18 When you have completed provisioning the RF GoQAM, go to Operating the RF

Modulator (on page 77).

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4004834 Rev D 53

Introduction

This chapter provides examples and descriptions of the DNCS
graphical user interfaces (GUIs) used for provisioning (configuring) the
IF GoQAM in an Overlay environment. Provisioning the GoQAM
prepares the device so that the DNCS recognizes it and so that it
operates properly.

Important: Your system must be operating SR 2.4/SR 3.4 (or later) to
use a GoQAM on your system. You must also have the Overlay feature
enabled.

Note: See Technical Specifications (on page 149) for the technical
specifications of the IF GoQAM and consult your network wiring
diagram when you provision the GoQAM to ensure a proper allocation
of bandwidth.

For more information about the DNCS and operating the DNCS
software, refer to the Digital Network Control System Online Help for
your system release.

4 Chapter 4

Provision the IF GoQAM

In This Chapter

 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

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Understand the IF GoQAM GUIs

This section provides examples and descriptions of the GUIs used for provisioning
the IF GoQAM as a DBDS network element an Overlay environment.

Important! Actual GUIs may differ slightly from the GUIs presented in this guide.

File Selection Dia log Screen

The following table lists field descriptions on the File Selection Dialog screen.

Field Description

Filter Displays the path and filename wildcard used by the system to search

for files. Enter the UNIX path, ending with /*.
This field displays the contents of the directory in the Directories and
Files fields of this window when you click Filter.

Directories Displays a list of available directories at the current path specified in

the Filter field

Files Displays a list of files within the current path specified in the Filter

field

Selection Displays the selected file

Understanding the IF GoQAM GUI s

Use the DNCS IF GoQAM GUIs to provision the IF GoQAM on the DNCS. The main
GUIs are the Set Up IF GOQAM window, the UpConverter List window, and the Set
Up UpConverter window. The following list provides descriptions of the IF GoQAM
GUIs:

 The Set Up IF GOQAM window contains the following fields:

- Basic Parameters

- Advanced Parameters

- Connectivity

 The UpConverter List window contains the UpConverter Name fields
 The Set Up UpConverter window contains the following fields:

- Basic Parameters

- Connectivity

Note: The sections within this chapter include examples and descriptions of all of the
fields within these windows.

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Understand the Set Up IF GoQAM GUI

This section provides descriptions of the fields in the Set Up IF GoQAM GUI.

Understanding Basi c Paramet ers

The Basic Parameters fields allow you to identify the IF GoQAM, assign it to a
headend, and specify the QAM modulation type. If you want to view the Basic
Parameters fields while reading this section, follow these steps to examine the Set
Up IF GOQAM window.

1 From the DNCS Administrative Console, select one of the following tabs:

 For SR 2.7/3.7/4.2 and later, click the Network Element Provisioning tab.
 For SR 2.5/3.5/4.0 and earlier, click the Element Provisioning tab.

2 Click QAM. The QAM List window opens.
3 Select File > New >GOQAM > IF GOQAM. The Set Up IF GOQAM window

opens with the Basic Parameters tab to the forefront and displays the Basic
Parameters fields as shown in the following example.

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Basic Parameters

The following table lists the Basic Parameters field descriptions.

Field Description

Headend Name Displays the name of the headend with which the

GoQAM is associated.

QAM Name Displays the name used for the GoQAM.

IP Address Displays the IP address of the Ethernet interface

through which the DNCS manages and controls
the GoQAM.

Modulation Type Allows you to specify one of the following

modulation types for each of the carriers:



ITU J.83 Annex B (6 MHz)



ITU J.83 Annex C DAVIC/DVB
(6 MHz)

Note: The default value is ITU J.83 Annex B (6
MHz).

Administrative State Specifies whether the GoQAM is active within the

system. The values are:



Offline – Default



Online – Active

MAC Address Displays the MAC address of the GoQAM

Subnet Mask Displays the IP Subnet mask assigned by the

system administrator.

Default Gateway Displays the network default gateway assigned by

the system administrator.

Ports

The following table lists the Ports field descriptions.

Field Description

Reserved TSID Range Identifies the available range of Transport

Stream IDs (TSIDs)

Input Block 1 ASI 1
Clear Transport Stream
ID

Identifies the Transport Stream ID for input
block 1 at ASI 1

Input Block 2 ASI 3
Clear Transport Stream
ID

Identifies the Transport Stream ID for input
block 2 at ASI 3

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4004834 Rev D 57

IF OUT Parameters

The following table lists the IF OUT port (1 – 2) field descriptions.

Note: Overlay technology uses only two of the IF OUT ports on the IF GoQAM.

Field Description

Modulation Displays the modulation format of the

individual carriers

Note: The default is 64-QAM for ITU J.83
Annex B.

Transport Stream ID Displays the identifier of the transport

stream ID for each IF Out port

Channel Center Frequency
(MHz)

Displays the frequency assigned to each
carrier

The frequency is fixed at 44.00 MHz on
the
IF GoQAM

Continuous Wave Mode Provides an unmodulated carrier

Note: Continuous wave mode may be
selected for each carrier.

Mute RF Output Disables the RF output. May be selected

for each output.

Note: The RF Output should be
provisioned from the front panel of the
GoQAM with the Mute RF option enabled
before you connect the IF GoQAM to the
distribution plant.

Disabled Prevents the DNCS from creating new

sessions on this output port. Existing
sessions are not affected. May be selected
for each output.

Interleaver Depth Allows you to select the Interleave setting

based on the type of set-top you are using
on your system. Interleaving is a
technique to overcome correlated channel
noise. Interleaving spreads out bursts of
errors to remain within the error­correcting ability of a device.

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58 4004834 Rev D

Function Keys

The following function keys appear on the Set Up GoQAM window.

Key Function

Save Saves changes to GoQAM settings and closes the Set Up IF

GoQAM window

Apply Makes changes to GoQAM settings without closing the Set

Up IF GoQAM window

Cancel Closes the Set Up IF GOQAM window without saving

changes that have not been previously applied to GoQAM
settings

Help Opens the DNCS Online Help

Understanding Adv anced Parameters

The Advanced Parameters fields of the Set Up IF GOQAM window allow you to
select the configuration file. To view the Advanced Parameters fields while reading
this section, click the Advanced Parameters tab in the Set Up IF GOQAM window.

The following diagram shows an example of the Advanced Parameters fields of the
Set Up IF GOQAM window.

Understand the Set Up IF GoQAM GUI

4004834 Rev D 59

Advanced Parameters

The following table lists Advanced Parameters field descriptions.

Field Description

Configuration File Name Displays the name of the configuration file used by

the GoQAM to determine whether it is running the
correct version of application code

Select Opens the File Selection Dialog window so that you

can specify the configuration file for the selected
GoQAM. See File Selection Dialog Screen, next in
this section, for more information

Understanding the File Select ion Dialog Screen

The File Selection Dialog screen allows you to specify the configuration file for the
GoQAM. To view the File Selection Dialog screen while reading this section, click
the Select button on the Advanced Parameters tab.

Understanding the BOOTP/TFTP Process

The BOOTP/TFTP process allows the GoQAM, after power on or reset, to request an
IP address and receive configuration parameters, application downloads, and
provisioning from the network BOOTP server. The DNCS, which is a BOOTP server,
uses a BOOTP reply to assign an IP address to the GoQAM if the unit is provisioned
in the DNCS database. The configuration file selected in the File Selection Dialog
window is included in the BOOTP reply. The GoQAM uses the information in the
configuration file to determine whether it is running the correct version of
application code. If the GoQAM is not running the correct version of application
code, it requests the correct image file from the DNCS.

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60 4004834 Rev D

The following diagram shows an example of the File Selection Dialog window.

File Selection Dialog Screen

The following table lists field descriptions on the File Selection Dialog screen.

Field Description

Filter Displays the path and filename wildcard used by the system to

search for files. Enter the UNIX path, ending with /*.
This field displays the contents of the directory in the Directories
and Files fields of this window when you click Filter

Directories Displays a list of available directories at the current path

specified in the Filter field

Files Displays a list of files within the current path specified in the

Filter field

Selection Displays the selected file

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4004834 Rev D 61

Function Keys

The following function keys appear in the File Selection Dialog screen.

Key Function

OK Places the selected file name into the Configuration File Name

field and closes the File Selection Dialog window

Filter Enables the contents of the directory to display in the Directories

and Files fields

Cancel Closes the File Selection Dialog window without changing the

original settings

Understanding Con nectivit y

The Connectivity fields of the Set Up GoQAM window allow you to specify the
input device connected to each of the input ports on the GoQAM.

Note: When you first provision the GoQAM, the Connectivity fields are accessible
only after you click Apply or Save from the Set Up GoQAM window.

To view the Connectivity fields while reading this section, click the Connectivity tab
in the Set Up GoQAM window.

The following diagram shows an example of the Connectivity fields within the
window.

Connectivity

The following table lists the Connectivity field descriptions.

Field Description

QAM Name Identifies the name of the selected GoQAM and allows

you to specify the Input Port (1 or 3)

Port Number Identifies the port number of the device that is connected

to the GoQAM. The server should be entered in the DNCS
as a generic MPEG source. Create as many ports as are
available for the server and connect to the GoQAM

Headend Name Identifies the headend in which the input device exists

Device Type Identifies the type of input device, such as an IRT to which

the GoQAM is connected

Device Name Identifies the name of the input device to which the

GoQAM is connected

Port Identifies the port number of the device that is connected

to the IF GoQAM. The server should be entered as the
DNCS as a generic MPEG source. Create as many ports as
are available for the server and connect to the IF GoQAM.

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Field Description

Show TSIDs/IPs Displays the Transport Stream (TS) IDs and Internet

Protocol addresses (IPs)

Show (slot, port) Displays the slot and port of the card connected to the

GoQAM

Legend Displays a group of icons that represent network elements

that may be displayed in the graphical drawing area

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Understand the Set Up UpConverter GUI

The Set Up UpConverter GUI allows you to add, provision, monitor, delete, or edit
an upconverter, assign it to a headend, and specify RF output and connectivity
parameters for the upconverter.

Important! You must connect an upconverter to the GoQAM in order to use the
procedures in this section.

Understanding the Set Up UpConv erter GUI

Follow these steps to open the UpConverter List window.

1 From the DNCS Administrative Console, select one of the following tabs:

 For SR 2.7/3.7/4.2 and later, click the Network Element Provisioning tab.
 For SR 2.5/3.5/4.0 and earlier, click the Element Provisioning tab.

2 Click UpConverter. The UpConverter List window opens.

3 Choose one of the following options:

 To create a new upconverter, to go step 4.
 To edit an existing upconverter, go to step 6.

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64 4004834 Rev D

4 From the UpConverter List window, select File > New. The Set Up UpConverter

window opens with Basic Parameters tab to the forefront.

Important! For a description of the fields in the Set Up UpConverter window, go
to Set Up UpConverter Basic Parameters, later in this section.

5 Enter the required configuration information into the blank fields of the Set Up

UpConverter window, then go to step 7.

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4004834 Rev D 65

6 Double-click one of the upconverters listed in the UpConverter Name column.

The Set Up UpConverter window opens with Basic Parameters tab to the
forefront.

Note: The IF GoQAM transmits a 44.00 MHz IF stream to an upconverter. The
upconverter converts the 44.00 MHZ IF stream to RF output at a specific RF
output port for transmission on the network. Use the Set Up UpConverter
window to add, edit, or delete these RF output ports.

7 Do you want to add an RF Output Port?

 If yes, go to step 8.
 If no, go to step 10.

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66 4004834 Rev D

8 To add an RF Out Port, click Add. An RF Output Port window similar to the

following opens.

Important! For a description of the fields in the RF Output Port window, go to
the RF Output Ports section in Set Up UpConverter Basic Parameters (on page

68).

9 Enter correct information in the RF Output Port window and move an Available

Hub to the Selected Hubs field.

10 Do you want to view or edit an RF Output port?

 If yes, go to step 11.
 If no, go to step 13.

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4004834 Rev D 67

11 To view or edit an RF Output Port, highlight a row and click Open. An RF

Output port similar to the following opens.

Note: For a description of the fields in the RF Output Port window, go to the RF
Output Ports section in Set Up UpConverter Basic Parameters (on page 68).

12 Did you make changes in the RF Output Port window?

 If yes, click Save.
 If no, click Cancel.

13 On the Set Up UpConverter window, click Apply. The system applies the

settings.

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68 4004834 Rev D

Set Up UpConverter Basic Paramet ers

The UpConverter Name is the name assigned to the upconverter.

Ports

The following table lists the Set Up UpConverter Ports field descriptions.

Field Description

Reserved TSID Range Displays the available range of transport stream

IDs



50 – 45000 for Overlay systems



11 – 50999 for Regional Control System (RCS)

Input UpConverter Stream
ID

Displays the transport stream ID of the currently
selected upconverter

RF Output Ports

The following table lists the Set Up UpConverter RF Output Ports field descriptions.

Field Description

Modulation Displays the frequency modulation for the RF

Output ports

Note: The default is 64-QAM for ITU J.83
Annex B.

Transport Stream ID Displays the identifier of the transport stream

ID for each RF Output ports

Channel Center Frequency
(MHz)

Displays the frequency assigned to the
upconverter

Continuous Wave Mode This option is not operational at this time.

Mute RF Output This option is not operational at this time.

Function Keys

The following table describes the function keys on the Set Up UpConverter window.

Field Description

Add Allows you to add a new RF Output port

Open Allows you to edit an RF Output port

Delete Allows you to delete an RF Output port

Save Saves changes and closes the window

Apply Makes changes without closing the window

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4004834 Rev D 69

Field Description

Cancel Closes the window without saving changes that

have not been previously applied

Help Opens the DNCS Online Help

Understanding Set Up UpConvert er Connect ivity

The Connectivity fields of the Set Up UpConverter window allow you to specify the
IF GoQAM connected to each of the Input ports on the upconverter.

Note: When you first provision the upconverter, the Connectivity fields only appear
after you click Apply or Save from the Set Up UpConverter window. Thereafter, the
Connectivity fields are accessible for viewing or modifying.

To view the Connectivity fields while reading this section, click the Connectivity tab
in the Set Up UpConverter window.

The following diagram shows an example of the Connectivity fields of the Set Up
UpConverter window.

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70 4004834 Rev D

Set Up UpConverter Connectivit y

The following table lists the Set Up UpConverter Connectivity field descriptions.

Field Description

UpConverter Name Identifies the name of the selected UpConverter and

allows you to select the Input Port

Headend Name Identifies the headend in which the input device exists

Device Type Identifies the type of input device to which the IF

GoQAM is connected

Device Name Identifies the name of the input device to which the IF

GoQAM is connected

Show TSIDs/IPs Displays the Transport Stream (TS) IDs and Internet

Protocol addresses (IPs)

Show (slot, port) Displays the slot and port of the card connected to the RF

GoQAM

Legend Displays a group of icons that represent network

elements that may be displayed in the graphical drawing
area

Provision an IF GoQAM on the DNCS

4004834 Rev D 71

Provision an IF GoQAM on the DN CS

In order for the IF GoQAM to operate properly as a network element within the
DBDS, you must provision the IF GoQAM on the DNCS. This section provides
procedures for provisioning an IF GoQAM on the DNCS.

Before Y ou Begin

Before you begin to provision the GoQAM on the DNCS, you need the following
information:

 IP address of the GoQAM
 Physical (MAC) address of the GoQAM
 Name you need to assign to the GoQAM
 Headend to which you need to assign the GoQAM
 RF frequencies for each output port
 Modulation type this GoQAM will use
 Transport Stream IDs for each port of the GoQAM
 Interleaver Depth for this GoQAM

Provisioning an I F GoQAM on the DNCS

Follow these steps to provision a new IF GoQAM or to adjust the settings for an
existing IF GoQAM on the DNCS.

1 Verify that you have provisioned the IF GoQAM in accordance with your

network wiring diagram and the input/output specifications for the IF GoQAM
(Appendix A) and other network devices.

Note: Refer to the Digital Network Control System Online Help for your system
release for more information about provisioning network elements.

2 From the DNCS Administrative Console, select one of the following tabs:

 For SR 2.7/3.7/4.2 and later, click the Network Element Provisioning tab.
 For SR 2.5/3.5/4.0 and earlier, click the Element Provisioning tab.

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3 Click QAM. The QAM List window opens.

4 Choose one of the following options:

 To provision a new IF GoQAM, go to step 5.
 To change the settings for an existing IF GoQAM, go to step 7.

5 Select File > New > GOQAM > IF GOQAM. The Set UP IF GOQAM window

opens.

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4004834 Rev D 73

6 Enter the required configuration information into the blank fields on the Basic

Parameters tab in the Set Up IF GoQAM window, then go to step 9.

7 From the QAM List, highlight a GoQAM in the list, select File > Open. The Set

Up IF GoQAM window opens with the Basic Parameters tab to the forefront
displaying the Basic Parameters configuration fields.

8 Enter or change the desired information in the Basic Parameters fields, then go to

step 9.

Notes:

 See the Basic Parameters field descriptions, earlier in this section, for

descriptions of each field.

 Refer to the Digital Network Control System Online Help for your system

release for more details about required DNCS procedures.

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9 Click the Advanced Parameters tab. The Set Up IF GOQAM window opens with

the Advanced Parameters tab to the forefront displaying the Advanced
Parameters configuration fields.

10 Enter or change the desired information in the Advanced Parameters fields.

Notes:

 See the Advanced Parameters field descriptions, earlier in this section, for

more details.

 Refer to the Digital Network Control System Online Help for your system

release for more details about required DNCS procedures.

11 To define the Configuration File Name, click Select. The File Selection Dialog

window opens.

12 Enter the configuration file in the Selection field; then, click OK. The File

Selection Dialog window closes.

Note: See the File Selection Dialog tab description, earlier in this section for
more information.

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13 Choose one of the following options:

 To provision the connectivity settings for a new IF GoQAM, go to step 14.
 To adjust the connectivity settings for an existing IF GoQAM, go to step 15.

14 On the Set Up IF GOQAM window, click Apply.

Results:

 The system saves the settings for the new IF GoQAM.
 The Connectivity tab becomes sensitized.

Note: When you first provision the IF GoQAM, the Connectivity tab is accessible
only after you click Apply or Save from the Set Up IF GOQAM window.
Thereafter, the Connectivity tab is accessible for viewing or modification.

15 Click the Connectivity tab. The Set Up IF GOQAM window opens with the

Connectivity tab to the forefront displaying the Connectivity configuration
fields.

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76 4004834 Rev D

16 Select the IF GoQAM input port you want to connect to the network.
17 Select the device you want to connect to the IF GoQAM in the Connect To fields

of the Connectivity tab; then, click Save. The QAM List is updated to include the
IF GoQAM.

Notes:

 The fields available in the Connect To panel of the Connectivity tab vary

according to which device is selected.

 See the Connectivity field descriptions, earlier in this section, for descriptions

of each field.

 Refer to the Digital Network Control System Online Help for your system

release for more details about required DNCS procedures.

4004834 Rev D 77

Introduction

This chapter contains procedures for viewing and changing GoQAM
RF settings, descriptions of screens and messages, and instructions for
performing routine maintenance.

Note: Actual screen settings may differ slightly from the examples
presented in this guide.

5 Chapter 5

Operating the RF Modulator

In This Chapter

 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

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Understand the Boot Process

This section describes the boot process and lists examples of the screens that appear
during a normal boot process. The Bootstrap (BOOTP) protocol is used to initialize
and to acquire the following configuration information:

 IP address
 Address mask
 Location of default gateway
 Addresses of important servers
 Name and location of software download file(s) from the network BOOTP server

Note: The GoQAM downloads software using Trivial File Transfer Protocol (TFTP),
which is a simplified version of FTP.

See Change the Boot Mode (on page 81) for a description of the boot modes available
and instructions for changing the boot mode.

See Troubleshooting Boot Screen Error Messages (on page 143) for troubleshooting
booting conditions.

1 The GoQAM sends a BOOTP request to the DNCS.
2 The DNCS responds to the BOOTP request, sending the IP address for the

GoQAM.

3 The GoQAM sends a TFTP request for the configuration file.

Note: The configuration file (goqam.config) contains environment variables,

download files, and server addresses.

4 The DNCS sends the TFTP goqam.config file.
5 If the files in the goqam.config file are different from those stored in the GoQAM,

then the GoQAM requests the download files, which consist of the following:

 Boot code for Host, NP1, NP2, and NP3
 Application code for Host, NP1, NP2, and NP3
 RF module code for RF Modules 1, 2, 3, and 4

Note: The messages that appear on the front panel of the GoQAM during the
boot process are described in Initial Boot Screens and Code Download Screens.

The following illustrations show examples of the initial boot screens.

Note: Actual screen settings may differ from the examples presented in this guide.

Understand the Boot Process

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When the GoQAM boots, the boot code version and release date appear.

If BOOTP completes successfully, the IP address boot screen appears.

Note: Although it is not a typical setting, if the GoQAM is set to run in a Standalone
mode (boot mode 0), the following Standalone mode boot screen appears instead of
the “Starting GoQAM” boot screen.

The IP address boot screen remains visible for approximately 2 seconds. If no errors
occur and no downloads are attempted, the boot code starts the application code and
the following screen appears.

Next, a screen similar to the following appears.

Then, the default status screen appears.

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The boot code, application code, and RF module code messages appear on the front
panel LCD screen during code download or during a download attempt. The
following table represents the sequence of events that occur during a complete boot
code, application code, and RF module code upgrade.

Code Type Front Panel Screen Message

Initial Boot

GoQAM Boot

vv.vv.vv MM/DD/YY

GoQAM Boot

xxx.xxx.xxx.xxx

Host Processor Boot Code

Downloading Host Code

!!! Do Not Power Off !!!

GoQAM Boot

vv.vv.vv MM/DD/YY

GoQAM Boot

xxx.xxx.xxx.xxx

Host Processor Application Code

Downloading Host Code

Please Wait ….

Writing App Code Flash

Please Wait ….

RF Code

Downloading RF # Code

Please Wait ….
(where # = 1-4)

Input Processor Boot Code

Downloading NP1 Code

Please Wait ….

Output Processor 1 & 2 Boot Code

Downloading NP2&3 Code

Please Wait ….

GoQAM Boot

vv.vv.vv MM/DD/YY

GoQAM Boot

xxx.xxx.xxx.xxx

Input Processor Application Code

Downloading NP1 Code

Please Wait ….

Output Processor 1 & 2 Application Code

Downloading NP2&3 Code

Please Wait ….

Starting GoQAM

Please Wait….

(a blank screen appears momentarily)

D9479 GoQAM

vv.vv.vv MM/DD/YY

When the code download is complete, the
default status screen appears.

CH 1 300.00 MHz 50.0 dBmV

ITUB 256QAM Alarm 0

Change the Boot Mode

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Change the Boot Mode

This section describes the available boot modes available and contains instructions
for changing the boot mode from the craft port using a diagnostic PC.

Boot Modes

Three boot modes (0 through 2) exist and are described in the following list:

 0 - Skip BootP (Standalone mode) – This mode bypasses the boot mode when

you power on the GoQAM. Use the Skip BootP mode when operating in
Standalone mode, when provisioning and monitoring the GoQAM from the
front panel or the craft port, or when operating without the control of the DNCS.
This mode skips the BOOTP and TFTP processes and jumps directly to the
application code.

 1 - Attempt BootP One Time (Attempt Bootp Once mode) – This mode is not

normally used in network operation. If used when the GoQAM is connected to
the network and the network connection is lost or reset, the GoQAM must be
rebooted. This mode attempts each BOOTP and TFTP step only once. If a failure
occurs during any step, the step is skipped; the GoQAM attempts the remaining
steps and eventually attempts to start the application. If the BOOTP and/or
configuration file TFTP steps are aborted due to errors, the GoQAM may not
communicate with the DNCS.

 2 - Bootp Until Successful (Boot Until Successful mode) – This is the default

mode. This mode continues to boot until the GoQAM receives an IP address and
all download images. This setting is useful when upgrading the software.
Booting until successful ensures that the GoQAM completes all startup
procedures successfully. Use the standard mode (boot forever until successful)
when a network controller such as the DNCS monitors and provisions the
GoQAM through the Ethernet port. This mode attempts to boot and to TFTP the
configuration file and any requested boot and/or application code files until the
entire process is successful. If an error occurs at any step, the GoQAM restarts
until a successful boot occurs.

Important! Do not select this setting when operating the GoQAM outside a
DNCS environment.

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Changing the Boot M ode

1 Connect a diagnostic PC to the CRAFT PORT on the back panel of the GoQAM.
2 Power on the diagnostic PC and activate a Procomm or Hyperterminal window

using the following modem connection settings:

 9600 baud
 1 stop bit
 No parity
 8 data bits
 No flow control

3 Power on the GoQAM; then, during the boot sequence, watch for the following

message on the PC monitor screen:

Type any key within 2 seconds to get shell prompt

Note: See the Connect Power Sources (on page 27) section for more details about

powering on the GoQAM.

4 Press any key on the PC to display the boot prompt. The following boot prompt

appears: boot>

Note: If you do not press a key in time to get the boot prompt, do one of the
following:

 Cycle power to the GoQAM, and repeat this step. See Resetting the

Modulator for more details.

 At the GoQAM> prompt, type boot; then, after the Type any key message

appears, press any key to display the boot prompt.

5 At the boot prompt, type setbootmode and press Enter. The current boot mode

setting appears.

6 Type one of the following numbers to select the boot mode:

 0 - Skip BootP
 1 - Attempt BootP One Time
 2 - Bootp Until Successful

Result: The system saves the new boot mode to nonvolatile memory (NVRAM)
with the new setting.

7 Type exit and press Enter. The GoQAM reboots using the new boot mode.
8 Disconnect the diagnostic PC.

Read the Default Status Screen

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Read the Default Status Screen

The Default Status screen provides status information such as the channel frequency
setting, RF level settings, modulation type, and the number of active alarms. The
default status screen displays after one of the following occurs:

 The reset process is complete.
 You press ENTER to complete a command.

The following is an example of the Default Status screen.

Reading the Defaul t Status Scre en

The following table describes the information displayed on the default status screen.

Display Function

CH1 Current RF Channel output selected. The CH

number corresponds to the channel number

Note: The GoQAM uses only CH1 and CH2.

285.00 MHz Established RF frequency setting for the selected
RF modulator (91 MHz to
869 MHz)

50.0 dBmV Configured RF level setting (42 dBmV to 56
dBmV)

ITUB 64QAM Selected modulation type. Values are:



ITUB 64 QAM



ITUB 256 QAM



DAVIC 256 QAM



DAVIC 16 QAM



DAVIC 64 QAM

Alarm 0 Current number of active alarms

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Use the Front Panel Keys to Change Configuration
Settings

The front panel of the GoQAM contains an alphanumeric LCD screen and three
alarm indicators. There are also several keys on the front panel to allow you to
change parameters. See the Front Panel Overview (on page 10) section for more
information on the front panel components.

Diagram of RF GoQAM Menu Structure

The following diagram illustrates the RF GoQAM menu structure in sequential
order.

Note: The settings on this menu are examples, not recommended settings.