scrambler guide

Series 8656x Scrambler Installation and Operation Guide

Please read this entire guide Veuillez lire entirement ce guide Bitte das gesamte Handbuch durchlesen Srvase leer completamente la presente gua Si prega di leggere completamente questa guida

Important

Please read this entire guide before you install or operate this product. Give particular attention to all safety statements.

Important

Veuillez lire entirement ce guide avant d'installer ou d'utiliser ce produit. Prtez une attention particulire toutes les rgles de scurit.

Zu beachten

Bitte lesen Sie vor Aufstellen oder Inbetriebnahme des Gertes dieses Handbuch in seiner Gesamtheit durch. Achten Sie dabei besonders auf die Sicherheitshinweise.

Importante

Srvase leer la presente gua antes de instalar o emplear este producto. Preste especial atencin a todos los avisos de seguridad.

Importante

Prima di installare o usare questo prodotto si prega di leggere completamente questa guida, facendo particolare attenzione a tutte le dichiarazioni di sicurezza.

Series 8656X Scrambler Installation & Operation Guide

Notices

Trademark acknowledgments

Scientific-Atlanta is a registered trademark of Scientific-Atlanta, Inc. 8600X is a trademark of Scientific-Atlanta, Inc. All other trademarks shown are trademarks of their respective owners.

Copyright

1998 Scientific-Atlanta, Inc. 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 Scientific-Atlanta, Inc.

504081 Rev D v

Important Rules for Safe Operation

Warning

WARNING!

THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY. TO REDUCE RISK OF ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO. REFER ALL SERVICING TO QUALIFIED SERVICE PERSONNEL.

Notice for CATV installers

If you are a CATV installer, read the information in the box below.

Read and retain instructions

Carefully read all safety and operating instructions before operating this product, and retain them for future reference.

Heed warnings

Follow all warnings and cautions in the operating instructions, as well as those that are affixed to this product.

504081 Rev D vi

Continued on next page

504081 Rev D vii

Important Rules for Safe Operation, Continued

Follow instructions

Follow all operating instructions that accompany this product.

Cleaning

Before cleaning, unplug this product from the socket-outlet. Do not use liquid or aerosol cleaners. Use a damp cloth for cleaning.

Water and moisture

Do not expose this product to moisture. Do not place this product on a wet surface, or spill liquids on or near this product.

Placement

Place this product close enough to a main AC socket-outlet to accommodate the length of the product power cord.

Make sure the mounting surface 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.


504081 Rev D viii


Accessories

Caution:

Maintain electrical safety! Power-operated equipment or accessories that you connect to this product should bear the UL listing mark or CSA certification mark on the accessory itself, and should not be modified so as to defeat the safety features. This will help avoid any potential for electric shock or fire. If in doubt contact qualified service personnel. Use this product only with a cart, stand, bracket, table, or other mounting accessories that meet Scientific-Atlanta specifications. Carefully follow all instructions for proper mounting.

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.

Ventilation

This product has openings for ventilation to protect it from overheating. To ensure product reliability, do not block or cover these openings.

Do not place entertainment equipment, lamps, books, or other objects on top of this product.

Do not place this product in any of the following locations. - On a bed, sofa, rug, or similar surface - Over a radiator or heat register - In a built-in installation, such as a bookcase or rack, unless the installation

provides proper ventilation

WARNING!

AVOID ELECTRIC SHOCK AND FIRE HAZARD! NEVER PUSH OBJECTS THROUGH THE OPENINGS IN THIS PRODUCT. FOREIGN OBJECTS CAN TOUCH DANGEROUS VOLTAGE POINTS OR CAUSE ELECTRICAL SHORTS THAT CAN RESULT IN ELECTRIC SHOCK OR FIRE.

504081 Rev D ix


504081 Rev D x


Power sources

A label on this product indicates the correct power source for this product. Operate this product only from a socket-outlet with the voltage and frequency indicated on the product label.

If you are uncertain of the type of power supply to your home or business, consult Scientific-Atlanta or your local power company.

WARNING!

AVOID ELECTRIC SHOCK AND FIRE HAZARD! DO NOT OVERLOAD SOCKET-OUTLETS AND EXTENSION CORDS. FOR PRODUCTS THAT REQUIRE BATTERY POWER OR OTHER SOURCES TO OPERATE, REFER TO THE OPERATING INSTRUCTIONS FOR THOSE PRODUCTS.

Grounding

This product is equipped with one of the following types of safety plug. Three-prong (grounding pin) plug Two-prong (polarized) plug

Follow the guidelines in the table below to properly ground this product.

IF this product has a... THEN insert this plug...

3-prong plug,

Note: The middle prong on this plug is a protective grounding pin.

into a grounded mains, three-socket outlet.

Note: If you are unable to insert this plug fully into the socket-outlet, try reversing the plug. If the plug still fails to fit, contact an electrician to replace your obsolete socket-outlet.

2-prong plug,

Note: This plug has one wide prong and one narrow prong. It is a polarized plug.

into a grounded mains, two-socket outlet in which one socket is wider than the other.

Note: This plug fits only one way. If you are unable to insert this plug fully into the outlet, contact your electrician to replace your obsolete socket-outlet.

Power cord protection

504081 Rev D xi

Route all power supply cords so that people cannot walk on, or place objects on or against, them. This can pinch or damage the cords. Pay particular attention to cords at plugs, socket-outlets, and the points where the cords exit the product.


504081 Rev D xii


Servicing

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.

WARNING!

AVOID ELECTRIC SHOCK! OPENING OR REMOVING THE COVER MAY EXPOSE YOU TO DANGEROUS VOLTAGES.

Damage requiring service

For damage that requires service, unplug this product from the socket-outlet. Refer service to qualified personnel under the following conditions. When there is damage to the power-supply cord or plug If liquid enters, or an object falls on this product If you expose this product to rain or water If this product does not operate normally by following the operating instructions If you drop this product or damage its cabinet When this product exhibits a distinct change in performance

Caution:

Avoid damage to this product! Adjust only those controls the operating instructions describe. Improper adjustment of other controls may result in damage that may require extensive corrective work by a qualified technician.

Safety check

Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that this product is in proper operating condition.

x 504081 Rev D

Contents Summary

Chapter 1 Installing or Removing the Scrambler

Chapter 2 Setting Up the Scrambler

Chapter 3 Calibrating the Scrambler

Chapter 4 Operating the Scrambler

Chapter 5 Operating Modes

Chapter 6 Compatibility

Chapter 7 Troubleshooting

Appendix A Technical Information

Appendix B Guidelines for Configuring VBI Lines

Appendix C Installing the XD Chip, XM Chip, and SRAM

Appendix D Customer Information

504081 Rev D xi

Contents

Important Rules for Safe Operation........................................................................................v

Chapter 1 Installing or Removing the Scrambler

Overview ..................................................................................... 1-1

8600x HCT System Components................................................. 1-4

About the Scrambler ................................................................... 1-6

Scrambler Models........................................................................ 1-8

Safety Advisories ............................................................... 1-10

Site Requirements...................................................................... 1-11

Configuring Jumpers................................................................. 1-13

Installing the Scrambler in a Rack............................................ 1-19

Connecting the Scrambler to a Baseband Video Source......... 1-21

Connecting the Scrambler to a Television Modulator............. 1-22

Connecting Audio for Audio Masking Scramblers ................. 1-26

Connecting the Scrambler to a Stereo Encoder ....................... 1-29

Connecting the Scrambler to the HEC ..................................... 1-38

Connecting the Scrambler to the ISP ....................................... 1-46

Connecting the Scrambler to a Data Repeater ........................ 1-49

Removing a Scrambler .............................................................. 1-50

Chapter 2 Setting Up the Scrambler

Overview ..................................................................................... 2-1

Setup Overview........................................................................... 2-2

Turning On the Scrambler.......................................................... 2-3

Adjusting the LCD Intensity ...................................................... 2-6

Setting the Scrambler Address ................................................... 2-9

Configuring the Scrambler from System Manager.................. 2-10

xii 504081 Rev D


504081 Rev D xiii

Contents, Continued

Chapter 3 Calibrating the Scrambler

Overview ........................................................................................... 3-1

Section AGeneral Information...................................................... 3-3

Section Overview ........................................................................ 3-3

Quick Reference to Calibrations................................................. 3-4

Calibration Equipment................................................................ 3-5

Entering Calibration Mode ........................................................ 3-7

Section BVideo Scrambling Calibration ....................................... 3-8


Calibrating Sound Carrier Level ................................................ 3-9

Calibrating Audio Pulse Height ............................................... 3-11

Calibrating Pulse Delays........................................................... 3-13

Cross-Pulse Monitor Method.................................................... 3-14

Spectrum Analyzer Method ..................................................... 3-18

Demodulator Method ............................................................... 3-30

Setting Vertical Interval Start and End.................................... 3-35

Calibrating Sync Buzz .............................................................. 3-38

Calibrating Regenerated Sync .................................................. 3-41

Section CAudio Masking Calibration........................................ 3-44

Section Overview ...................................................................... 3-44

Equipment Setup....................................................................... 3-46

Enabling Audio Masking.......................................................... 3-48

Adjusting RF Deviation: Direct Measurement ........................ 3-49

Adjusting RF Deviation: Bessell Null Method ......................... 3-50

Adjusting the Main Audio Level.............................................. 3-52

Calibrating FM Deviation ......................................................... 3-53

Calibrating Barker Audio ......................................................... 3-54


xiv 504081 Rev D

Contents, Continued

Chapter 4 Operating the Scrambler

Overview ..................................................................................... 4-1

Controls and Indicators .............................................................. 4-2

Reading the Status Screen .......................................................... 4-3

System Manager Control .......................................................... 4-10

Maintenance.............................................................................. 4-11

Chapter 5 Operating Modes

Overview ..................................................................................... 5-1

Introduction to Operating Modes .............................................. 5-2

Quick Reference to Operating Modes ........................................ 5-4

Chapter 6 Compatibility

Overview ........................................................................................... 6-1

Section ASystem Compatibility .................................................... 6-2


System Compatibility Quick Reference...................................... 6-3

Jerrold Compatibility................................................................... 6-5

Hamlin/Eagle Compatibility ...................................................... 6-8

Zenith Compatibility................................................................... 6-9

TOCOM Compatibility ............................................................. 6-12

Pioneer Compatibility (For Future Release) ............................. 6-15

Section BKit Installation.............................................................. 6-17

Section Overview ...................................................................... 6-17

Installing the MVP Interface Kit in a Jerrold Encoder ............ 6-18

Installing the MVP Piggyback Kit in a Jerrold Encoder .......... 6-23

Installing the ZVE Interface Kit in a Zenith Z-TAC Encoder. 6-28

Installing the PM Interface Kit in a Zenith Encoder ............... 6-31

504081 Rev D xv


xvi 504081 Rev D

Contents, Continued

Chapter 7 Troubleshooting

Overview ..................................................................................... 7-1

Troubleshooting Guide................................................................ 7-2

Before You Call the Technical Assistance Center...................... 7-7

Diagnostic Status....................................................................... 7-12

Displaying Diagnostic Status.................................................... 7-14

Appendix A Technical Information

Overview ...................................................................................A-1

General Specifications...............................................................A-2

Audio Masking Specifications..................................................A-7

Connectors.................................................................................A-9

Appendix B Guidelines for Configuring VBI Lines

Overview ....................................................................................B-1

VBI Line Restrictions..................................................................B-2

Vertical Interval Settings............................................................B-3

Appendix C Installing the XD Chip, XM Chip, and SRAM

Overview ................................................................................... C-1

Installation Overview................................................................ C-2

Safety Advisories ............................................................... C-4

Installing the XD and XM Chips .............................................. C-5

Installing the SRAM................................................................ C-11

Setting Up the Scrambler with a Download SRAM ............. C-15

Setting Up the Scrambler with a Blank SRAM...................... C-18


504081 Rev D xvii

xviii 504081 Rev D

Contents, Continued

Appendix D Customer Information

Overview .................................................................................... D-1

Customer Support...................................................................... D-2

Returning Products .................................................................... D-3

Your Comments, Please ............................................................. D-5

FCC Compliance/Doc Compliance ............................................................ inside back cover

Series 8656x Scrambler Installation & Operation Guide

1 Installing or Removing the Scrambler

504081 Rev D Installing or Removing the Scrambler 1-1 1

Chapter 1

Installing or Removing the Scrambler

Overview

Introduction

This chapter introduces you to the Series 8656X(CCIR-M, NTSC) Scrambler and gives the information on the following: site requirements step-by-step instructions for installing or removing the scrambler from your

8600X Home Communications Terminal (HCT) Addressable System scrambler components scrambler functions scrambler configurations safety

Safety information

IMPORTANT SAFETY INFORMATION:

Read the Safety Advisories section before attempting to install or operate this equipment. Look for this symbol throughout this manual:

Definition

The 8656X Scrambler is a device that scrambles the video signal so that cable-ready television sets cannot receive an unauthorized channel. The scrambler also inserts Vertical Blanking Interval (VBI) and audio pulse data. Refer to About the Scrambler later in this chapter for the other scrambler functions.


1-2 Installing or Removing the Scrambler 504081 Rev D

Overview, Continued

Installation overview

The following is a list of tasks to be completed when installing the Series 8656X Scrambler. Detailed instructions for each procedure are provided in this chapter (unless otherwise indicated). Configure jumper settings (if needed). Install the scrambler in a rack. Connect the scrambler to a video source. Connect the scrambler to a television modulator. Connect audio for audio masking scramblers. Connect the scrambler to a stereo encoder (optional). Connect the scrambler to a HEC. Connect the scrambler to an ISP (optional). Connect the scrambler to a data repeater (optional). Set up the scrambler for operation. (See chapter 2.) Calibrate the scrambler. (See chapter 3.)

Removal overview

To remove the 8656X Scrambler from a live system, you will need to do the following: Delete the scrambler from System Manager Disconnect all connections and remove the scrambler from the rack.

Refer to Removing a Scrambler at the end of this chapter for instructions.



Overview, Continued

In this chapter

This chapter contains the following topics.

Topic See Page

8600X HCT System Components 1-4

About the Scrambler 1-6

Scrambler Models 1-9

Safety Advisories 1-12

Site Requirements 1-13

Configuring Jumpers 1-16

Installing the Scrambler in a Rack 1-24

Connecting the Scrambler to a Baseband Video Source 1-27

Connecting the Scrambler to a Television Modulator 1-29

Connecting Audio for Audio Masking Scramblers 1-33

Connecting the Scrambler to a Stereo Encoder 1-29

Connecting the Scrambler to the HEC 1-38

Connecting the Scrambler to the ISP 1-46

Connecting the Scrambler to a Data Repeater 1-49

Removing a Scrambler 1-50


8600x HCT System Components

Introduction

To prepare your site for a scrambler and to install it, you should be familiar with the function and terminology of the components in an 8600x HCT Addressable System.

System Manager

System Manager controls the 8600x HCT system by enabling you to authorize and deauthorize HCTs, change the function of service, configure and control scramblers, turn on and off the Headend Controller (HEC) operation such as a database in the HEC.

Headend Controller

The HEC is a device that stores and forwards information, such as authorizing a channel or upgrading a service for a subscriber. The HEC receives its information from System Manager and continuously cycles this information to the HCTs.

Scrambler

The scrambler is the device that scrambles the video signal so that cable-ready television sets cannot receive an unauthorized channel. (Refer to About the Scrambler in this chapter for additional scrambler functions.)

Information Service Processor

The Information Service Processor (ISP) takes Interactive Viewing Guide (IVG) data and text channel data and converts it to the proper format as needed by the HCTs. The ISP receives IVG and text channel data from service providers for the following purposes: The IVG service provider supplies television programming information. The text channel service provider supplies text information for viewing virtual

channels.



8600x HCT System Components, Continued

Diagram

Refer to the illustration below for the components of an 8600x HCT system.


About the Scrambler

Diagram of the front and back panels

The diagram below shows the front and back panels of the Series 8656X Scrambler.

Scrambler functions

The Series 8656X Scrambler performs the following functions in an addressable system (one that is able to communicate with individual HCTs): Scrambles the video signal so that cable-ready television sets cannot view an

unauthorized channel. Masks the audio. Interfaces with a HEC to receive performance parameters and HCT data. Interfaces with an ISP to receive, store, and transmit IVG data and text channel

data. Places HCT data in the vertical blanking interval (VBI). Places data on the sound carrier in the form of AM (amplitude modulated)

pulses. Interfaces with a data repeater, allowing data to flow through additional

channels. Transmits timing and descrambling information to Scientific-Atlanta home

terminals. Provides system compatibility with other brands of set-top converters.


About the Scrambler, Continued

How the scrambler works

The Series 8656X Scrambler scrambles the video by suppressing the vertical and horizontal intervals and by inverting various parts of the video signal. The scrambler also sends timing and descrambling data to HCTs as audio data pulses, data on selected VBI lines, or both.

Compatibility

The Series 8656X Scrambler supports all Scientific-Atlanta addressable and non-addressable HCTs. The Series 8656X Scrambler provides limited support for the following encoders: Jerrold (baseband and RF) Hamlin/Eagle Zenith TOCOM Pioneer

Compatibility with these encoders is discussed in detail in chapter 6, Compatibility.


Scrambler Models

Models

The table below lists the Scientific-Atlanta 8656X Scrambler models available.

Model Description Memory Part Number

8656-XEU-AM Audio masking scrambler 512 kb 546582 8656-XEU-AMC Audio masking-capable scrambler 512 kb 564687

SoundProtect audio masking feature

Scientific-Atlantas SoundProtect feature enables audio masking, which allows cable operators to mask the sound on certain channels. This feature is provided with Model 8656-XEU-AM Scramblersscramblers equipped with the additional Audio Masking board. Model 8656-XEU-AMC (audio masking-capable) scramblers do not contain an Audio Masking board when shipped from the factory; however, they can be retrofitted with an Audio Masking board at the factory. All other scrambler models cannot be retrofitted.

Scramblers equipped with the Audio Masking board mask the audio for scrambled channels and supply either monaural barker audio (AM radio quality) or a 400 Hz tone instead of the program (main) audio. The barker audio or 400 Hz tone is selected by a jumper setting on the Audio Masking board.

You can use the audio masking feature with only monaural audio. This feature is not compatible with stereo audio. However, if you disable audio masking, the scrambler can pass stereo audio. The cable provider can supply stereo audio to the scrambler, and the scrambler will convert it to monaural whenever you enable masking.

Authorized HCTs/home terminals

Only the following authorized HCTs and home terminals can demask audio for audio-masked channels. Below are a few examples:

Model 8610XE58 HCT Model 8610XX51 HCT Model 8610-SBAR HT Model 8610X551 HCT Model 8610X568 HCT Model 8610-STAR HT Model 8610X554 HCT Model 8610XX58 HCT Model 8610-STAN HT Model 8610XZ58 HCT Model 8611VA79 HT Model 8610SZAN HT Model 8610X558 HCT Model 8611VAB9 HT Model 8610-SZAR HT Model 8610X451 HCT Model 8610-SBAN HT


When tuned to the audio masked channel, HCTs incapable of demasking and cable-ready televisions will receive barker audio provided by the cable operator or a 400 Hz tone instead of the main audio for the authorized channel.



Scrambler Models, Continued

Related information

For more information about installing and configuring the audio masking option, refer to the following sections: Configuring Jumpers in chapter 1 Connecting Audio for Audio Masking Scramblers in chapter 1 Audio Masking Calibrations in chapter 3, section C


Safety Advisories

Warnings and cautions

STOP! Read the following safety advisories before proceeding.

WARNINGS!

AVOID ELECTRIC SHOCK AND DAMAGE TO THIS PRODUCT! WHEN YOU REPLACE A FUSE, BE SURE TO USE THE CORRECT TYPE AND RATING. THE CORRECT TYPE AND RATING ARE INDICATED ON THE BACK PANEL.

AVOID ELECTRIC SHOCK! MAKE SURE TO DISCONNECT POWER FROM THE SCRAMBLER BEFORE REMOVING THE COVER.

AVOID PERSONAL INJURY AND PRODUCT DAMAGE! SLIDING THIS PRODUCT TOO FAR FORWARD OR BACKWARD IN THE RACK CAN CAUSE IT TO FALL.

Cautions:

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

Avoid damage to this product! Use only the line voltage that is indicated on the back panel.

These servicing instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. Refer all servicing to qualified service personnel.


Site Requirements

Introduction

Before you install the scrambler, make sure your installation site meets the requirements in this section.

Rack

You need a standard EIA (USA) equipment rack. The rack must be at least 610 mm (24 in.) deep.

Power

You need a power source with the specifications in the table below.

Item Specification

Power input voltage 97.5 V AC to 132 V AC

Caution:

Avoid damage to this product! Use only the line voltage that is indicated on the back panel.

Line frequency 50/60 Hz

Power consumption 50 W maximum

Fuse

WARNING!

AVOID ELECTRIC SHOCK AND DAMAGE TO THIS PRODUCT! WHEN YOU REPLACE THE FUSE, BE SURE TO USE THE CORRECT TYPE AND RATING. THE CORRECT TYPE AND RATING ARE INDICATED ON THE BACK PANEL.

You can access the power fuse from the back panel of the scrambler. To change the fuse, see chapter 4, Operating the Scrambler.



Site Requirements, Continued

Operating temperature

The operating temperature range of this product is 0C to 50C (32F to 122F).

Caution:

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

Temperature control

We recommend that you do the following to keep this product from overheating: Place this product in an air-conditioned environment. Keep all cooling vents on this product obstruction-free. Ventilate the rack. Refer to Forced air vs. passive ventilation below.

Forced air vs. passive ventilation

There are two types of ventilation methods: forced air and passive: Forced-air ventilation forces air flow through the rack Passive ventilation assists air movement through the rack

The table below compares the two methods for ventilation.

Method When to Use How to Ventilate Space Requirements

Forced-air ventilation

Use when you stack the scrambler closely with other equipment in a high-density rack.

Use devices such as a centrifugal blower, a computer floor, or air cooling to force air flow through the rack.

Important! Maintain at least 44 mm (1.75 in.) of space above and below the scrambler.


Passive ventilation

Use when you stack the scrambler loosely with other equipment in a standard rack.

Use devices such as a vented panel between the scrambler and the rack to ensure adequate air movement through the rack.

Important! Maintain at least 89 mm (3.5 in.) of space above and below the scrambler.


Configuring Jumpers

Introduction

This section provides information on how to configure jumpers for the scrambler.

Audio masking

If the scrambler includes the optional audio masking feature, the scrambler is equipped with an Audio Masking board located over the Digital board. For audio masking scramblers, you may need to change the jumper settings on the Audio Masking board to select the audio option you want. You may also need to change the jumper settings for pre-emphasis and audio gain.

Note: Refer to SoundProtect audio masking feature in Scrambler Models earlier in this chapter for more information about audio masking.

Prerequisite

If you need to change jumper settings, you should remove the scrambler cover and change the jumper settings before installing the scrambler in a rack.



Configuring Jumpers, Continued

Jumper settings: Audio Masking board

The table below gives the scrambler jumper settings the with the optional Audio Masking board, part number 546582. Refer to the procedure and diagram on the following page for more information.

Feature Jumper Function Setting

Main audio JP2 Has pre-emphasis Pins 1 and 2

Does not have pre-emphasis (Default)

Pins 2 and 3

Main audio gain + JP3 Increase gain Pins 1 and 2

Decrease gain Pins 2 and 3

Main audio gain - JP4 Decrease gain Pins 1 and 2

Increase gain Pins 2 and 3

Audio Masking option JP5 Barker audio Pins 1 and 2 (JP6 open)

JP6 400 Hz tone (Default) Pins 1 and 2 (JP5 open)

Barker audio gain + JP7 Increase gain Pins 1 and 2

Decrease gain Pins 2 and 3

Barker audio gain - JP8 Decrease gain Pins 1 and 2

Increase gain Pins 2 and 3

Note: When setting gain for main audio and barker audio, jumpers must be set as a pair. For example, to increase main audio gain, set both JP3 and JP4 as indicated above.




Jumper locations: Audio Masking board

The diagram below gives the jumper locations for the Audio Masking board.

Procedure: Changing jumper settings for audio masking

If you need to change the jumper settings, follow the instructions below.

Step Action

1

WARNING!

AVOID ELECTRIC SHOCK. DISCONNECT POWER FROM THE SCRAMBLER BEFORE YOU BEGIN.

Remove power from the scrambler. 2 Use a screwdriver to remove the scrambler cover. 3 Select the audio option for audio masking. Option Action 400 Hz tone Leave jumper installed on pins 1 and 2 of JP6.

(Default)

Barker audio 1.Remove the jumper from JP6 and place it on pins 1 and 2 of jumper JP5.

2. Supply barker audio input to the terminal on the back panel. (Refer to Connecting Audio for Audio Masking Scramblers later in this chapter.)



Procedure: Changing jumper settings for audio masking (continued)

Step Action

4 Select the main audio pre-emphasis option.

Option Action

Main audio provided to the scrambler does not have pre-emphasis

Leave jumper installed on pins 2 and 3 of JP2. (Default)

Main audio provided to the scrambler has Pre-emphasis (for example, BTSC composite audio)

Remove the jumper from pins 2 and 3 of JP2 and place it on pins 1 and 2 of JP2.

5 Is the main audio input below -15dBm?

If yes, set these jumpers and go to step 7.

Jumper Action

JP3 Place the jumper on pins 1 and 2.

JP4 Place the jumper on pins 2 and 3. If no, go to step 6.

6 Is the main audio input above +15dBm? If yes, set these jumpers and go to step 7.

Jumper Action


JP4 Place the jumper on pins 1 and 2. If no, go to step 7.

7 Is the barker audio input below -15 dBm? If yes, set these jumpers and go to step 9.

Jumper Action




If no, go to step 8.




Procedure: Changing jumper settings for audio masking (continued)

Step Action

8 Is the barker audio input above +15 dBm? If yes, set these jumpers and go to step 9.

Jumper Action




9 Replace the cover of the scrambler.

10 Reconnect the power to the scrambler.

Jumper settings: Digital board

Refer to the following table for the settings for the Digital board jumpers. These jumpers are configured at the factory and normally you do not need to change them.

Note: You may need to change these jumper settings if a pin falls out during shipping.

Jumper Setting

With Audio Masking Board Setting

Without Audio Masking Board

J9 Pin 1 only Pins 1 and 2




Note: J11 is the jumper for the Audio Masking board.




Jumper locations: Digital board

The diagram below gives the jumper locations for the Digital board.

Whats next

Once you have configured jumpers on the scrambler, you need to install it in a rack. See Installing the Scrambler in a Rack on the next page.


Installing the Scrambler in a Rack

Introduction

The front panel of the scrambler mounts to the front of a rack. The front panel supports the entire weight of the scrambler. If you want more support for the scrambler, see the additional support methods below.

Additional support methods

Two additional support methods are as follows: Angle support brackets Rack slides

Note: You do not need to remove the scrambler from the rack for calibrations.

Brackets vs. slides

Use the following table to determine which support method fits your needs.

Method Part Number Description Installation

Angle support brackets

345763 Attach to the rack, but not to scrambler (stationary assembly).

Form two shelves that support scrambler when it is inside the rack.

Allow the scrambler to slide partially out of the rack for servicing.

WARNING!

AVOID PERSONAL INJURY AND PRODUCT DAMAGE! SLIDING THE SCRAMBLER TOO FAR FORWARD OR BACKWARD IN THE RACK CAN CAUSE IT TO FALL.

Install and secure to rack.


Rack Slides (Universal Rack Slide Kit)

275317 Attach to both the rack and to the scrambler

Support the scrambler inside and outside of the rack.

Allow the scrambler to slide completely out of the rack for servicing.

Install according to the Universal Rack Slide Kit Installation Manual, part number 345773. This manual is enclosed with the kit.



Installing the Scrambler in a Rack, Continued

Mounting the front panel

Follow these steps to mount the front panel to the rack.

Step Action

1 Position the scrambler in the rack.

2 Insert a mounting screw through each of the four holes on the front panel of the scrambler, then into the rack.

3 Firmly tighten each mounting screw.

Whats next

Once you have installed the scrambler, you need to connect the scrambler to a video source. See Connecting the Scrambler to a Baseband Video Source on the next page.


Connecting the Scrambler to a Baseband Video Source

Requirement

The scrambler requires a baseband video source before it can become fully operational. However, you can operate the front panel controls and menu system without connecting a baseband video source. Typical video sources are satellite receivers or video signal generators.

Procedure

To connect the scrambler to a baseband video source, connect one coaxial cable between VIDEO BB IN on the scrambler and the baseband output of the video source.

Diagram: Connecting to baseband video

Whats next

Once you have attached the scrambler to a baseband video source, you need to connect the scrambler to a television modulator. See Connecting the Scrambler to a Television Modulator on the next page.


Connecting the Scrambler to a Television Modulator

Introduction

You must connect the scrambler to a Model 6350 Television Modulator or equivalent modulator.

Definition

A television modulator is a device that takes the incoming video signal and modulates it to an intermediate frequency (IF) carrier. The modulator then converts the video IF to an RF frequency. The television modulator also receives audio signal and modulates it to a sound IF carrier. The modulator then converts the audio IF to an RF frequency.

Requirements

The following requirements apply to the television modulator: The television modulator must have a DIFLA IF loop-through. For audio masking scramblers, the television modulator must have a Broadband

Audio Modulator module.

Procedure

Follow these steps to connect the scrambler to a Scientific-Atlanta Model 6350 (CCIR-M, NTSC) Television Modulator or equivalent television modulator. Refer to Diagram: Connecting to a Model 6350 Television Modulator later in this section.

Step Action

1 Before you connect the scrambler, set the picture-to-sound (p/s) carrier ratio for the modulator to 15.0 dB 1.0 dB.

2 Connect a coaxial cable between VIDEO BB OUT (J5) on the scrambler and VIDEO BB IN (J6 or J7) on the television modulator.



Connecting the Scrambler to a Television Modulator, Continued

Procedure (continued)

Step Action

3 Connect a coaxial cable between VIDEO IF IN (J4) on the scrambler and VIDEO IF OUT (J9) on television modulator.

4 Connect a coaxial cable between VIDEO IF OUT (J3) on the scrambler and VIDEO IF IN (J12) on the television modulator.

5 Determine if you need to make other connections based on the type of HCTs in your system.

Type of HCT Action

8600X HCTs only No more actions required. You have completed the connections.

Any non-8600X HCTs Go to step 6.

6 Connect a coaxial cable between AUDIO IF IN (J2) on the scrambler and AUDIO IF OUT (J8) on the television modulator.

Note: If this is an audio masking scrambler, connect the audio source to the scrambler as shown in Connecting Audio for Audio Masking Scramblers later in this section.

7 Connect a coaxial cable between AUDIO IF OUT (J1) on the scrambler and AUDIO IF IN (J11) on the television modulator.




Diagram: Connecting to a Model 6350 Television Modulator




For more information

See the Model 6350 CCIR-M (NTSC) Television Modulator Installation and Operation Guide, part number 371929.

Whats next

If you are using an audio masking scrambler, see Connecting Audio for Audio Masking Scramblers on the next page. If your scrambler does not use audio masking, you have completed installation and now must setup the scrambler for operation. Go to chapter 2, Setting up the Scrambler.

If you need to connect a stereo encoder, HEC, or ISP, see the appropriate sections in this chapter for connection procedures.


Connecting Audio for Audio Masking Scramblers

Introduction

For audio masking scramblers, main audio is supplied to the scrambler instead of to the television modulator by a number of different sources. Examples of a main audio source would be a satellite receiver, local receiver, or a tape machine.

To connect for audio masking, you need to connect main audio and barker audio to the scrambler. Refer to the two illustrations that follow.

Connecting main audio

Main audio is the normal audio that a subscriber hears on the channel. Supply the main audio input to the terminal block on the back panel of the scrambler as shown in the following diagram.



Connecting Audio for Audio Masking Scramblers, Continued

Scrambler audio input and output Scrambler audio input is 600 W, balanced. If only unbalanced main audio is available, connect main audio to the scramblers AUDIO IN + and connect the audio source shield (ground) to both AUDIO IN - and GROUND.

Note: Be sure to remove the insulation from the end of the shield (ground) wire at least one-half inch before inserting it into the receptacle.

Scrambler audio output is 600 W, balanced. If your television modulator requires unbalanced input, connect the scramblers AUDIO OUT + to the modulator audio input and connect the scramblers GROUND to the modulators audio ground. Do not connect the scramblers AUDIO OUT to the main audio sources ground.

Audio source The audio source can provide monaural audio or BTSC composite baseband audio. Audio supplied to the scrambler is assumed to not have pre-emphasis. If audio to the scrambler has pre-emphasis (this includes BTSC audio), place jumper JP2 (Audio Masking board) over pins 1 and 2.



Connecting Audio for Audio Masking Scramblers, Continued

Connecting barker audio

Barker audio is the audio that a non-authorized subscriber hears. For example, on an audio-masked channel, some cable operators may supply an audio message such as, If you wish to receive this channel.

If you want barker audio, connect barker audio input and main audio input as shown in the following diagram.

Barker audio input

Scrambler barker audio input is 600W, balanced. If only unbalanced audio is available, connect barker audio source to REMOTE 4 (Barker Audio In +) and connect the barker audio source shield (ground) to REMOTE 5 (Barker Audio In -) and GROUND.

504081 Rev D Installing or Removing the Scrambler 1-29

Connecting the Scrambler to a Stereo Encoder

Introduction

This optional procedure applies to those using stereo encoding. You need to interconnect your Series 8656X Scrambler with a Model 6380A Stereo Encoder and a Model 6350 (CCIR-M, NTSC) Television Modulator.

Requirement

Your Scientific-Atlanta Model 6350 (CCIR-M, NTSC) Television Modulator (or equivalent) must have a broadband audio module.

Stereo encoder connections

You can connect the stereo encoder to the scrambler and television modulator in one of three ways: Connect for 4.5 MHz output (separate audio and video) Connect for audio IF output (41.25 MHz)see note Connect for balanced BTSC output

Note: For audio IF output, the way you connect for cable systems that have only 8600X HCTs differs from the way you connect for cable systems that combine other types of home terminals (for example, Scientific-Atlanta Models 8580, 8590, or 8600 Home Terminals).



Connecting the Scrambler to a Stereo Encoder, Continued

Procedure: Connecting for 4.5 MHz output

Follow the steps below to connect the stereo encoder to the scrambler and television modulator for a 4.5 MHz output (separate audio and video).

Note: The Series 8656X Scrambler does not accept baseband video plus 4.5 MHz audio. The scrambler baseband video path has a low-pass filter with a cutoff at 4.0 MHz. Baseband video goes to the scrambler; 4.5 MHz audio goes to the television modulator.

Step Action 1 Verify that the television modulator is wired to accept 4.5 MHz audio and

video as separate inputs. 2 Connect a 75W coaxial cable between CARRIER OUT on the stereo

encoder and 4.5 MHz AUDIO IN (J15) on the television modulator. 3 Connect a 75W coaxial cable between VIDEO OUT (4.5 MHz OPT) on

the stereo encoder and VIDEO BB IN (J6) on the scrambler. 4 Connect a 75W coaxial cable between VIDEO BB OUT (J5) on the

scrambler and MAIN VIDEO IN (J6) on the television modulator.




Diagram: Connection for 4.5 MHz output




Procedure: Connecting for audio IF output8600X HCTs only

Use this procedure if your cable system contains only 8600 X HCTs.

Follow the steps below to connect the stereo encoder, scrambler, and television modulator for Audio IF (41.25 MHz) output (option AIFM).

Step Action

1 Verify that the television modulator is wired to accept a 41.25 MHz input.

Important! The television modulator must accept a 41.25 MHz input.

2 Connect a 75 W coaxial cable between CARRIER OUT on the stereo encoder and 41.25 MHz AUDIO IF IN (J11) on the television modulator.

3 Connect a 75 W coaxial cable between VIDEO OUT (4.5 MHz OPT) on the stereo encoder and VIDEO BB IN (J6) on the scrambler.

4 Connect a 75 W coaxial cable between VIDEO BB OUT (J5) on the scrambler and MAIN VIDEO IN (J6) on the television modulator.




Diagram: Connecting for audio IF output8600X HCTs only




Procedure: Connecting for audio IF outputother converters

Use this procedure if your cable system combines 8600X HCTs with several different types of converters (for example, Scientific-Atlanta Models 8580, 8590, or 8600 Home Terminals).

Follow the steps below to connect the stereo encoder, scrambler, and television modulator for Audio IF (41.25 MHz) output (option AIFM).

Step Action

1 Verify that the television modulator is wired to accept a 41.25 MHz input.

Important! The television modulator must accept a 41.25 MHz input.

2 Connect a 75 W coaxial cable between CARRIER OUT on the stereo encoder and AUDIO IF IN (J2) on the scrambler.

3 Connect a 75 W coaxial cable between AUDIO IF OUT (J1) on the scrambler and AUDIO IF IN (J11) on the television modulator.






Diagram: Connecting for audio IF outputother converters




Procedure: Connecting for balanced composite BTSC output

Follow the steps below to connect the stereo encoder, scrambler, and television modulator for balanced composite BTSC output.

Step Action

1 Be sure that the television modulator is stereo-ready.



4 Connect a twisted pair between AUDIO IN + and - (terminal strip) on the television modulator and COMPOSITE BTSC OUT + and - (terminal strip) on the stereo encoder.

Connect the cable shield to COMPOSITE BTSC OUT GND on the stereo encoder.

Note: Ground at only one end of the cable.




Diagram: Connecting for balanced composite BTSC output


See the Model 6380A BTSC Stereo Encoder Installation and Operation Guide, part number 373556.

Installing or Removing the Scrambler 504081 Rev D 1-38

Connecting the Scrambler to the HEC

Introduction

This optional procedure applies only to those having a HEC. To connect the Series 8656X Scrambler to the inband addressable system, you must connect one scrambler to the Scientific-Atlanta Series 8658 Headend Controller (HEC). You can then connect a second scrambler to the first, a third to the second, and so on in a daisy-chain arrangement.

HEC

The HEC receives transactions from System Manager and transmits HCT data to scramblers as one of the following: Audio inband AM pulses on the sound carrier only VBI data on video lines only A combination of audio inband AM pulses on the sound carrier and VBI data on

video lines

Connections

You can connect scramblers to the HEC in two ways: Direct (local) connection Modem (remote) connection

Direct (local) connection

Connects the scrambler chain to a local HEC. To use a direct connection, you may use any model HEC. The Model 8658-305 HEC can only be used for a direct connection.

Important! If you have 8600X HCTs in your cable system, you must use a direct connection and use only Series 8656X Scramblers in the headend.

Modem (remote) connection

Connects the scrambler chain to a remote HEC. You must have the proper HEC model (Model 8658-301 HEC or Model 8658-302 HEC) to use a modem connection.

Data connections are necessary for the following Scientific-Atlanta addressable systems: 8570 Home Terminals ( Direct or Modem)


8590 Home Terminals (Direct or Modem) 8600 Home Terminals (Direct or Modem) 8610 Home terminals (Direct or Modem) 8600X HCTs ( Direct Connection only)



Connecting the Scrambler to the HEC, Continued

Cables and accessories

If you have the appropriate HEC for your installation, you should already have all of the necessary cables and accessories (they are supplied with the HEC). You must order modems separately. The cables and accessories you need depend on the connection you are using: Direct (local) connection Modem (remote) connection

Direct (local) connection

Be sure you have the following cables for a direct connection:

One 4ft, RS-485 data cable for each scrambler (part number 546582). This cable is for daisy chaining two or more scramblers. We supply this cable with the Series 8656X Scrambler.

One 50-ft, RS-485 data cable (part number 292276). This cable is for connecting the first scrambler to the HEC. We supply this cable with the Model 8658-305 HEC. If you have another model HEC, you need to order this cable separately.

One 9-pin data terminator (part number 538141).

Modem (remote) connection

You need the following cables for a remote connection:

One 4-ft, RS-485 cable for each scrambler (part number 546582). This cable is for daisy chaining two or more scramblers. We supply this cable with the Series 8656X Scrambler.

One 3-ft, RS-232 modem data cable (part number 570403).

One RS-232 surge protector assembly (part number 180142). This assembly includes a DB-9 female-to-female adapter. We supply this surge protector assembly with Model 8658-301 HEC and Model 8658-302 HEC.

One 10-ft, RS-232, DB-9toDB-25 adapter cable (part number 463037). This cable is for connecting the HEC modem to the RS-232 surge protector at the HEC site.

One RS-485, DB-9toDB-37 data cable (part number 292172). This is a custom cable for connecting the scrambler to an RS-232toRS-485 converter.


One 9-pin data terminator (part number 538141).




Terminator

You must use a 9-pin terminator (data-termination plug) to terminate the scrambler chain. Use this terminator for direct connections and for modem connections. The part number for the terminator is 538141. It is shipped with your scrambler.

Procedure: Direct connection

Follow these steps to connect the Series 8656X Scrambler to a local Series 8658 HEC.

Step Action

1 Connect an RS-485 data cable (part number 546582 or 292276) between HEC DATA IN on the scrambler and one of the multiprotocol ports on the HEC. (The male end connects to the scrambler.)

Note: The multiprotocol ports are located on the adapter card in slot 2 on the back panel of the HEC (in slot 3 for a four-headend system).

2 Do you need to connect additional scramblers? If yes, connect a 4-ft, RS-485 data cable (part number 546582)

between HEC DATA OUT on the scrambler you just connected to the HEC, and HEC DATA IN on the next scrambler in the chain. (The male end connects to HEC DATA IN.)


3 Is this scrambler the last scrambler in the chain? If yes, install a 9-pin data terminator (part number 538141) on the

HEC DATA OUT connector. This procedure is complete. If no, return to step 2.




Diagram: Direct connection

The diagram below shows the connections between a local HEC and a Series 8656X Scrambler.




Modem connections

To connect the Series 8656X Scrambler to a remote HEC, you must make connections at two locations: HEC site Scrambler site

Note: The modem at the scrambler site communicates with the modem at the HEC site through leased telephone lines.

Procedure: HEC-to-modem connection

Follow the steps below to connect the Series 8658 HEC to a modem at the HEC site.

Step Action

1 Locate the DB-9 female-to-female adapter that is included with the RS-232 surge protector assembly (part number 180142).

On one end of this adapter, loosen, but do not remove the two screws (or hex nuts, depending on your model).

On the other end of the adapter, remove the screws.

2 Plug the EQUIP side of the RS-232 surge protector into the end of the DB-9 female to female adapter with the loosened screws.

Connect the other end of the DB-9 female to female adapter (the end with no screws) to the RS-232 data cable.

Plug the RS-232 data cable into one of the multiprotocol ports on the HEC. Secure this cable to the HEC.

Note: The multiprotocol ports are located on the adapter card in slot 2 on the back panel of the HEC (in slot 3 for a four-headend system).

3 Plug the DB-9 (female) end of the RS-232 data cable into the LINE side of the RS-232 surge protector.

4 Connect the surge protector GROUND cable to the headend system ground.

Note: You need to peel the backing from the double-sided tape on the back of the surge protector and place the surge protector where it does not block vents and is safe from being bumped.



Procedure: HEC-to-modem connection (continued)

Step Action

5 Plug the DB-25 (male) end of the RS-232 data cable into the modem.

6 Connect the modems telephone jack to the leased telephone line.

Diagram: HEC-to-modem connection

The diagram below shows the connections between a HEC and a modem at the HEC site.




Procedure: Scrambler-to-modem connection

Follow the steps below to connect the Series 8656XScrambler to an RS-232toRS-485 converter and modem at the scrambler site.

Step Action

1 Locate the DB-9toDB-37 custom data cable supplied with the HEC (part number 292172). This cable is part of the HEC kit for remote operation.

2 Plug the DB-9 end of the custom data cable into HEC DATA IN on the scrambler.

3 Plug the DB-37 end of the custom data cable into the RS-485 port of an RS-232toRS-485 converter.

4 Do you need to connect additional scramblers? If yes, connect a 4-ft, RS-485 data cable (part number 546582)

between HEC DATA OUT on the scrambler you just connected to HEC DATA IN on the next scrambler in the chain. (The male end connects to HEC DATA IN.)


5 Is this the last scrambler in the chain?

If yes, install a 9-pin data terminator (part number 538141) on the HEC DATA OUT connector. Go to step 6.

If no, return to step 4.

6 Connect the RS-232toRS-485 converter to a 9600 baud (or faster) synchronous modem.

7 Connect the modems telephone jack to the leased telephone line.




Diagram: Scrambler-to-modem connection

The diagram below shows the connections between a Series 8656X Scrambler and a RS-232toRS-485 converter and modem.


See the Headend Controller v6.0 Installation & Operation Guide, part number 565293.


Connecting the Scrambler to the ISP

Introduction

This optional procedure only applies to addressable systems that have the Scientific-Atlanta Information Services Processor (ISP). Only scramblers used for IVG and text data need to be connected to the ISP. These scramblers are also connected in the daisy chain with the HEC.

The ISP provides the addressable system with IVG and text-channel capabilities. The Series 8656X Scrambler receives IVG data and text-channel data and re-transmits this data on VBI video lines.

Requirements

To complete this installation procedure, you need the following: A Scientific-Atlanta ISP and software One RS-485 data cable (or equivalent) for each scrambler connection. (One cable

is supplied with the ISP. Additional cables may be ordered.) One or more dedicated Series 8656X Scramblers. You must dedicate the

scrambler to either IVG or text-channel data. In the 8600X HCT Addressable Control System, the IVG scrambler is used to send IVG data only. This IVG scrambler cannot send any other type of data. This is also true for the text-channel scrambler. The text-channel scrambler is used to send text-channel data only.

One terminator (data-termination plug) to terminate the scrambler chain (part number 538141)

Procedure

Follow these steps to connect one or more dedicated Series 8656X Scramblers to the Scientific-Atlanta ISP.

Step Action

1 Connect one RS-485 cable between ISP DATA IN on the scrambler, and the RS-485 port on the ISP. Note: The ISP has two RS-485 communication ports for connection to dedicated Series 8656X Scramblers.


2 Is this the last scrambler in the chain? If yes, place the terminator in ISP DATA OUT on the scrambler. This

procedure is complete. If no, go to step 3.



Connecting the Scrambler to the ISP, Continued


Step Action

3 Connect an RS-485 cable between ISP DATA OUT on the scrambler you connected in step 1 and ISP DATA IN on the next dedicated scrambler in the chain.

4 For all remaining scramblers NOT connected to the ISP: Connect a terminator to the scramblers ISP DATA OUT connection.

5 Return to step 2.

Diagram: Connecting one scrambler to the ISP

The diagram below shows the connections between one scrambler and the ISP.

Note: Scramblers still need to be in the HEC daisy chain. HEC connections are omitted from this diagram for clarity.



Connecting the Scrambler to the ISP, Continued

Diagram: Daisy chaining scramblers to the ISP

The diagram below shows the connections between multiple scramblers and the ISP.


See the Information Services Processor Installation and Operation Guide, part number 573031.


Connecting the Scrambler to a Data Repeater

Introduction

This optional procedure only applies to cable systems that use audio in-band home terminals (models 8570, 8590, 8600, and 8610). The Series 8656X Scrambler can send audio pulse data to a data repeater. The repeater sends the same data stream as the scrambler to which it is connected, regardless of scrambling mode.

Connecting to a data repeater

Connect one RS-485 cable between DATA REPEATER on the scrambler and DATA IN on the data repeater.

Cable requirements

The following table indicates cable requirements based on the scrambler model.

Scrambler Model Number RS-485 Cable Requirements

8656XEUAM

8656XEUAMC

Use the standard cable with no modifications.

8656XEU Swap pins 1 and 2 on one end of the RS-485 cable.

1- Installing or Removing the Scrambler 504081 Rev D 50

Removing a Scrambler

Introduction

You must perform the following procedures when removing a scrambler from a live system. Detailed steps for each procedure follows in the next two sections.

Procedure Description

1 Delete scrambler from System Manager 10/20.

2 Physically remove scrambler from the rack.

Deleting a scrambler in System Manager 10/20

Prior to removing a scrambler from your system, you must delete the scrambler from System Manager 10/20. This prevents error messages from appearing when you physically remove the scrambler. The table below lists steps for deleting a scrambler in System Manager 10/20. For more information about the log on procedure or configuring different types of scramblers in System Manager 10/20, see System Manager 10/20 Software Users Guide, part numbers 562940 (version 4.0) and 573884 (version 4.5).

Step Action

1 Log on to System Manager

2 From the Main Menu: Select Scramblers. Select Control.

3 The Scrambler Configuration screen appears. Do the following: Select a headend code. Select a scrambler address.

4 Click Find.

Result: The screen reflects that particular scramblers configuration.

5 Click Delete.

Result: This scrambler is deleted and the procedure is done.


Once you delete the scrambler in System Manager 10/20, you may now physically remove the scrambler from the rack. The next section explains that procedure.



Removing a Scrambler, Continued

Physically removing a scrambler

Follow the steps below to disconnect and remove a scrambler from a live system.

Step Action

1 Disconnect the cables from AUDIO IF IN and AUDIO IF OUT on the back of the scrambler and connect them together using an F-81 barrell connector.

2 Disconnect the VIDEO IF IN and VIDEO IF OUT cables from the back of the scrambler and connect them together using an F-81 barrell connector.

3 Disconnect the VIDEO BB IN and VIDEO BB OUT cables from the back of the scrambler and connect them together using an F-81 barrell connector.

4 Turn the power off on the scrambler.

5 Disconnect the power cable.

6 Is this scrambler the end of the HEC data daisy chain?

IF. THEN.

Yes Remove the 9-pin data terminator (part number 538141) from HEC DATA OUT on the back of the scrambler.

Disconnect the DB-9 data cable from HEC DATA IN on the back of the scrambler and connect the terminator to the DB-9 end of the data cable. Go to step 7.

No Disconnect the RS-485 data cable from both the HEC DATA IN and HEC DATA OUT on the back of the scrambler and connect the cables to each other.




Physically removing a scrambler (continued)

Step Action

7 Is this scrambler connected to an ISP?

IF. THEN

NO Go to step 9.

YES Go to step 8.

8 Is this scrambler at the end of the ISP data daisy chain?

IF THEN

YES Remove the 9-pin data terminator (part number 538141) from HEC DATA OUT on the back of the scrambler.

Disconnect the DB-9 data cable from HEC DATA IN on the back of the scrambler and connect the terminator to the DB-9 end of the data cable. Go to step 9.

NO Disconnect the RS-485 data cable from both the HEC DATA IN and HEC DATA OUT on the back of the scrambler and connect the cables to each other.




Physically removing a scrambler (continued)

Step Action

9 Do you have any connections to the terminal block?

IF THEN

YES Remove any terminal block connections from the scrambler and leave them disconnected.

NO Go to step 10.

10 Unscrew the scrambler and slide it out of the rack.

1998 Scientific-Atlanta, Inc. All rights reserved.

Series 8656x Scrambler Installation & Operation Guide

2 Setting Up the Scrambler

504081 Rev D Setting Up the Scrambler 2-1

Chapter 2

Setting Up the Scrambler

Overview

Introduction

After installation, you need to set up the scrambler for operation. Setting up the scrambler involves selecting the correct setting for each function that you want the scrambler to perform. Carefully review each function before making any changes to the functions current settings, which may be correct for your purposes.

This chapter gives step-by-step procedures for setting up the Series 8656X Scrambler for operation within your system.

In this chapter

This chapter contains the following topics.

Topic See Page

Setup Overview 2-2

Turning On the Scrambler 2-3

Adjusting the LCD Intensity 2-7

Setting the Scrambler Address 2-11

Configuring the Scrambler from System Manager 2-13

2-2 Setting Up the Scrambler 504081 Rev D

Setup Overview

Introduction

This section gives an overview of the setup procedures for scrambler configuration. The information in this section provides the correct sequence for setting up the scrambler before you calibrate it in chapter 3. This section also explains the role of System Manager in setting up the scrambler.

Setup

The following procedures are recommended for setting up scramblers.

Procedure Description

1 Using the scrambler front panel status screen interface, set the scrambler addressoperating mode 8Address Setup.

(Refer to Setting the Scrambler Address in this chapter for detailed instructions.)

2 Configure all other scrambler parameters from System Manager. Refer to Configuring the Scrambler from System Manager later in this chapter.

Note: Refer to the following for more information: System Manager Software Users Guide, part numbers 562940

(version 4.0) and 573884 (version 4.5) and System Managers online help

System Manager IV/V Users Guide (part number 289734)

3 Using the scrambler front panel status screen interface, calibrate the scrambler using operating mode 0Calibration.

(Refer to chapter 3, Calibrating the Scrambler, for detailed instructions.)


Turning On the Scrambler

Introduction

When you turn on the Series 8656X Scrambler, it goes through a test sequence and one or more LCD screens appear.

Caution

Caution:

Watch for test-fail messages when turning on the scrambler. These messages indicate specific hardware problems. Record the messages and contact the Scientific-Atlanta Technical Assistance Center for your region. See Customer Support in Appendix D at the end of this manual.

Procedure

Follow the steps below to turn on the scrambler.

Step Action Result

1 Make sure the power switch is OFF.

Make sure the REMOTE/ LOCAL switch is set to LOCAL.

Plug the power cord into a standard AC socket-outlet.



Turning On the Scrambler, Continued


Step Action Result

2 Turn on the power switch. The power indicator light on the front panel should turn ON.

Within 2 seconds, the following screens display on the front panel LCD.

Important Notes:

In the screens above, n.nn reflects the firmware revision installed in the scrambler.

The last screen to display is the status screen. It always appears at the completion of a normal power-on sequence. If you cannot see the screens, try adjusting the LCD intensity. See Adjusting the LCD Intensity later in this chapter.


Turning On the Scrambler, Continued

Power on error messages

An error message may appear instead of the normal status screen. The table below contains the possible error messages.

Message screen Possible Cause Check and Correct

Hardware Error!! See Diag Menu 16

Note: If a hardware error is detected, this error message will flash once every 5 seconds.

The scrambler detected a hardware error during its power-on test.

Note: This message appears if any power-on test screens show a test failure.

Turn off the scrambler and back on again. If the error message still appears, contact Scientific-Atlanta.

BAD OR MISSING BASEBAND VIDEO!

There is no baseband video connected to the scrambler.

Check the baseband video source. You need to make sure your source is providing video.

*** WARNING! *** PLL FREQ INCORRECT

The video PLL has temporarily lost lock.


Adjusting the LCD Intensity

Introduction

When you turn on the scrambler, you should immediately see the LCD screen on the front panel.

If you cannot see the screen, you can adjust the LCD intensity. You can also fine-adjust the LCD intensity to make the screen more legible.

Adjustment methods

You can use either of two methods to adjust the LCD intensity (screen brightness): Calibration method Power-on method

Use the table below to determine which method to use to adjust the LCD intensity.

Screen Display Adjustment Method

Legible, but you would like to readjust the brightness

Calibration method. Refer to Calibration method.

Not visible Power-on method. Refer to Power-on method.

Completely blacked out Power-on method. Refer to Power-on method.

Calibration method

Follow the steps below to adjust the LCD intensity with scrambling operating mode 0Calibration.

Step From this screen... Press... 1 PRM SySu IEB 000

AVA 33s IE1 255

Note: The status screen appears at normal power on and reappears whenever you exit an operating mode.

SELECT


2 Select Mode ID _ _

0 (zero) ENTER



Adjusting the LCD Intensity, Continued

Calibration method (continued)

Step From this screen... Press...

3 Enter Password _ _ _ _

4321 ENTER

4 Calibration LCD Intensity

ENTER

5 LCD Intensity +INC -DEC 009

+ to make the screen brighter, or - to make the screen dimmer.

6 LCD Intensity SEL = NEXT 009

ENTER

7 +SAVE -CANCEL SELECT for next

+ to save new value, or - to return to the status screen.



Adjusting the LCD Intensity, Continued

Power-on method

Follow the steps below to adjust the LCD intensity with the power-on method.

Step Action

1 Turn off the scrambler.

2 From the scrambler keypad, do the following: Press and hold down 0. Turn on the power switch. Release the 0 key after about 1 second.

3 Within 2 seconds of completing step 2, press 0 again.

The following LCD screen appears.

Press ENTER when intensity is OK.

Note: The LCD screen enters a continuous cycle. During this cycle, the screen displays in varying degrees of intensity (or visibility).

4 When the brightness is correct, press ENTER.

5 The following LCD screen appears.

+/- fine adjust Setting = nnn

Is the intensity acceptable? If yes, go to step 6. If no, press + or - to fine-adjust the intensity.

6 Press ENTER.


Setting the Scrambler Address

Introduction

You must set a unique address for the scrambler. Setting the scrambler address establishes a link among the scrambler, the HEC, and System Manager.

Note: We recommend that you make this address the same number as the channel ID that appears on the HCT.

Method

You must set the scrambler address from the scrambler front panel.

Procedure

Follow the steps below to assign the scrambler an address using the scrambler front panel keypad and operating mode 8Address Setup.

Step From this screen... Press...

1 PRM SySu IEB 000AVA 33s IE1 255

SELECT.

2 Select Mode ID_ _

8 (Address Setup). ENTER. Note: You do not need to use leading zeros (0s) to enter mode numbers or numeric fields, although the scrambler will allow it.

3 Address Setup

No action. Displays for 2 seconds (default).

4 Enter New ValueAddress 1-254

No action. Displays for 2 seconds (default).

5 Address Setup_ _ _ (New=nnn)

the number keys to enter a value from 1 to 254.

Enter.

Note: Valid scrambler addresses are 1 to 254. You do not need to use leading zeros (0s).


6 +SAVE -CANCELSELECT for next

+ to save. to cancel and return to status screen.


Configuring the Scrambler from System Manager

Introduction After you set the scrambler address, you must configure all other scrambler parameters from System Manager. This section gives an overview of the procedure for configuring a new scrambler from System Manager. Notes: For detailed instructions for using System Manager 10/20, refer to the System

Manager Software Users Guide, part numbers 562940 (version 4.0) and 573884 (version 4.5) or the System Managers online help.

For information about System Manager IV/V, refer to the System Manager IV/V Software Users Guide (part number 289734).

System Manager

System Manager controls scrambler functions as indicated in the table below.

System Manager

Scrambler Control

10/20 Overwrites all changes made at the scrambler front panel, unless you set the scrambling parameter on the Scrambler Configuration screen to IGNORE.

IV/V Provides scrambler control for audio inband systems.

Guidelines

Follow these guidelines when configuring a scrambler from System Manager. Know the address of the scrambler. The scrambler uses its address to

communicate with the HEC and System Manager. Know the headend code. This number identifies the HEC that the scrambler will

communicate with.

Procedure: Configuring scramblers

Follow the steps below to configure the scrambler in System Manager.

Step Action

1 Log on to System Manager.

Result: The System Manager Main Menu appears.


2 Highlight and select Scramblers. Pull down and select the Control submenu. Result: The Scrambler Configuration Selection screen appears.



Configuring the Scrambler from System Manager, Continued

Procedure: Configuring scramblers (continued)

Step Action

3 On the Scrambler Configuration Selection screen, do the following: Select the headend code for this scrambler. Enter the scrambler address. Click OK.

Result: The Scrambler Configuration screen appears.

Note: The fields on this screen are described in detail in the System Managers online help.

4 On the Scrambler Configuration screen, do the following: Configure all the needed fields. Press SAVE. Press EXIT.

Result: You have configured your scrambler.




Scrambler Configuration screen field descriptions

The fields on the Scrambler Configuration screen are described briefly in the table below. The Operating Mode column identifies the scrambler operating mode that corresponds to the field, when applicable.

For detailed information about scrambling modes and other operating modes, refer to chapter 5, Operating Modes. Also refer to System Managers online help for detailed field descriptions as needed.

Field Description Operating

Mode

Headend Code The code for the headend where this scrambler is installed

Scrambler Address Identifies the scrambler for communications with System Manager and the HEC

Note: You must first enter the scrambler address at the scramblers front panel; then, enter the same address the System Managers Scrambler Configuration screen.

8

Channel Number The channel number for this scrambler

Channel ID The number displayed on the home terminal as the channel number; should match the channel number entered above

4

HEC Headend Number Always 1 except for audio-only HEC headends

Location ID Used if more than one scrambler transmits this channel

Current Dynamic Mode

Used if the scrambling mode is set to Dynamic 1

Sync Buzz Reduction SAP Buzz Reduction

Used to reduce descrambling buzz 12

Delay Mode Timing Delay Mode. A security feature that sets the delay between the descrambling pulse and the horizontal sync pulse

2


Field Description Operating Mode

Time Out Drop Field/Random Axis Timeout. Used if Drop Field is set to enable. Defines the maximum time in mode without a video scene change

9




Scrambler Configuration screen field descriptions (continued)

Field Description Operating Mode

Split Sync Enable Used if the scrambling mode is SA Sync Suppress 13

Drop Field Used if the scrambling mode is SA Sync Suppress 11 Pirate Defeat-I Pirate Defeat-II Pirate Defeat-III Pirate Defeat-IV

Enables or disables the home terminal pirate defeat feature

83

Current Jerrold Mode

Jerrold Tier

Used if a Jerrold (General Instrument) scrambling mode is used

1

Jerrold Tier for Previews

Used if you set a Jerrold Tier value for a preview channel

Frequency The channel frequency

Cable For dual-cable systems, cable A or B

Scrambler Digital Address

Used for simplex communication

Note: Simplex communication is used when the scrambler is not co-located with the HEC. The scrambler is programmed from the scramblers front panel. All options on System Managers Scrambler Configuration screen are set to Ignore.

31

Memory Size The scrambler memory size

Note: You can check the scrambler memory size at the scramblers front panel using the Diagnostic Stats mode (Data NVRAM value).

16

Data Stream The type of data being received from the HEC and the ISP

5

Scrambler Type Defines outgoing data to the home terminal 6

Scrambling Mode The type of scrambling to be used for this channel 1


SA Vid

scrambler guide

Documents