mvp ii modulating video processor installation and...

M V P I I

M o d u l a t i n g V i d e o P r o c e s s o r

I n s t a l l a t i o n a n d O p e r a t i o n M a n u a l

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Instrument

VIDEO MOD

AUDIO DEV

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REM

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CLEAR

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A

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STEREO

PRV

LEVEL

MODE

BB RF

SERVICE CODE

OP

SND COMP

-20dB

IF MVP II

CAUTIONRISK OF ELECTRIC SHOCK

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

TO REDUCE THE RISK OF ELECTRIC SHOCK,DO NOT REMOVE COVER (OR BACK).NO USER-SERVICEABLE PARTS INSIDE.

CAUTION:

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

Special Symbols That Might Appear on the Equipment

This symbol indicates that dangerous voltage levels are present within the equipment. These voltages are not insulated and may be of sufficient strength to cause serious bodily injury when touched. The symbol may also appear on schematics.

The exclamation point, within an equilateral triangle, is intended to alert the user to the presence of important installation, servicing, and operating instructions in the documents accompanying the equipment.

For continued protection against fire, replace all fuses only with fuses having the same electrical ratings marked at the location of the fuse.

This equipment operates over the marked Voltage and Frequency range without requiring manual setting of any selector switches. Different types of line cord sets may be used for connections to the mains supply circuit and should comply with the electrical code requirements of the country of use. This equipment requires a grounding conductor in the line cord. The line cord provided with the equipment is acceptable for use with NEMA Style 5-15R ac receptacles supplying nominal 120 Volts.

WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

CAUTION: TO PREVENT ELECTRICAL SHOCK, DO NOT USE THIS (POLARIZED) PLUG WITH AN EXTENSION CORD, RECEPTACLE, OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.

CAUTION: USE ONLY MAIN LINE CORD THAT COMPLIES WITH THE COUNTRY’S PRODUCT SAFETY REQUIREMENTS.

It is recommended that the customer install an AC surge arrestor in the AC outlet to which this device is connected. This is to avoid damaging the equipment by local lightning strikes and other electrical surges.

FCC Compliance This equipment 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 harmful interference when the 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 Installation 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 the user will be required to correct the interference at his/her own expense. Any changes or modifications not expressly approved by Motorola could void the user’s authority to operate this equipment under the rules and regulations of the FCC.

You may find the following booklet, prepared by the Federal Communication Commission, helpful: How to Identify and Resolve Radio-TV Interference Problems, Stock No. 004-000-0342-4, U.S. Government Printing Office, Washington, DC 20402.

Changes or modification not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Canadian Compliance This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numérique de la classe A respects toutes les exigences du Règlement sur le matériel brouilleur du Canada.

Declaration of Conformity

Declaration of Conformity

We Motorola, Inc. 101 Tournament Drive

Horsham, PA 19044, U.S.A.

declare under our sole responsibility that the

Modulating Video Processor Model MVP II

to which this declaration relates is in conformity with one or more of the following standards:

EMC Standards

EN55022 EN55024 EN55013 EN50083- CISPR-22 CISPR-24 CISPR-13

IEC60065

Safety Standards

EN60065 EN60825 EN50083-1 EN60950 IEC 60950 + A1: 1992 + A2: 1993 + A3: 1995 + A4: 1996

following the provisions of the Directive(s) of the Council of the European Union:

EMC Directive 89/336/EEC Low Voltage Directive 73/23/EEC

Copyright © 2002 by Motorola, Inc.

All rights reserved. No part of this publication may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation or adaptation) without written permission from Motorola, Inc.

Motorola reserves the right to revise this publication and to make changes in content from time to time without obligation on the part of Motorola to provide notification of such revision or change. Motorola provides this guide without warranty of any kind, either implied or expressed, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Motorola may make improvements or changes in the product(s) described in this manual at any time.

Motorola, the stylized M logo, General Instrument, and the General Instrument logo are registered in the US Patent & Trademark Office. All other product or service marks are the property of their respective owners. © Motorola, Inc. 2002

MVP II Installation and Operation Manual

Contents

Section 1 Introduction

Using This Manual............................................................................................................................................................................1-2 Related Documentation ...................................................................................................................................................................1-2 Document Conventions ...................................................................................................................................................................1-3 If You Need Help ...............................................................................................................................................................................1-3 Calling for Repairs............................................................................................................................................................................1-3

Section 2 Overview

New and Improved Features............................................................................................................................................................2-1 Emulation Modes..............................................................................................................................................................................2-3 Video Scrambler ...............................................................................................................................................................................2-4 Audio Privacy....................................................................................................................................................................................2-7 In-Band Service Data........................................................................................................................................................................2-7 Audio Inputs......................................................................................................................................................................................2-7 Addressable Control ........................................................................................................................................................................2-8 Standby Operating Function ...........................................................................................................................................................2-8 Clear Operating Function ................................................................................................................................................................2-9 Power Backup...................................................................................................................................................................................2-9 Block Diagram ................................................................................................................................................................................2-10

Section 3 Controls and Indicators

Front Panel........................................................................................................................................................................................3-1 Audio Mode Display ................................................................................................................................................................3-4 Audio Level Indicator ..............................................................................................................................................................3-6 Video Mode Indicators ............................................................................................................................................................3-7

Rear Panel .........................................................................................................................................................................................3-7 Internal Switches (Top Cover).......................................................................................................................................................3-12 Status Displays...............................................................................................................................................................................3-14

Section 4 Installation

Determining the Appropriate Emulation Modes............................................................................................................................4-1

ii Contents


Setting the Emulation Mode............................................................................................................................................................ 4-1 Setting the Options .......................................................................................................................................................................... 4-1 Setting Scrambling Modes.............................................................................................................................................................. 4-2 Setting Service Codes ..................................................................................................................................................................... 4-2 Setting Local/Remote Operation .................................................................................................................................................... 4-2 Setting the Remote Address........................................................................................................................................................... 4-2 Setting Up the System..................................................................................................................................................................... 4-2

Mounting .................................................................................................................................................................................. 4-3 Cabling ..................................................................................................................................................................................... 4-4 Setting IF Levels...................................................................................................................................................................... 4-6 Upconverting to the RF Channel ........................................................................................................................................... 4-6

Section 5 Operation

Emulation Modes ............................................................................................................................................................................. 5-1 Standard Modes ...................................................................................................................................................................... 5-3 Non-standard Modes............................................................................................................................................................... 5-4 Security Modes........................................................................................................................................................................ 5-5 Special and Alignment Operating Modes ............................................................................................................................. 5-7

Option Modes ................................................................................................................................................................................... 5-9 Scrambling Modes ......................................................................................................................................................................... 5-10

Sync Mode Switch Settings ................................................................................................................................................. 5-10 Video Mode Switch Settings ................................................................................................................................................ 5-12

Section 6 Troubleshooting

Status Displays ................................................................................................................................................................................ 6-1 Power On Sequence................................................................................................................................................................ 6-1 Alignment Mode ...................................................................................................................................................................... 6-1

Audio Faults ..................................................................................................................................................................................... 6-1 Video Faults...................................................................................................................................................................................... 6-1

Video Fault Indicator............................................................................................................................................................... 6-2 Over Indicator .......................................................................................................................................................................... 6-2

System Fault..................................................................................................................................................................................... 6-2 Fault Code Indicators ...................................................................................................................................................................... 6-3

Appendix A Specifications

Video..................................................................................................................................................................................................A-1 Audio .................................................................................................................................................................................................A-1 Scrambling........................................................................................................................................................................................A-1 Composite IF Output........................................................................................................................................................................A-1

Contents iii


Remote Control................................................................................................................................................................................ A-2 Auxiliary IF Switch Drive................................................................................................................................................................. A-2 Test Point ......................................................................................................................................................................................... A-2 Standby Input................................................................................................................................................................................... A-3 Alarm Output.................................................................................................................................................................................... A-3 AC Power Line Requirements ........................................................................................................................................................ A-3 Physical Dimensions....................................................................................................................................................................... A-3 Environmental.................................................................................................................................................................................. A-3

Appendix B Waveform Examples

Abbreviations and Acronyms

Figures Figure 1-1 Front and rear views of the MVP II ..............................................................................................................................1-1 Figure 2-1 Location of front panel controls and displays ...........................................................................................................2-2 Figure 2-2 Location of rear panel controls and connections......................................................................................................2-2 Figure 2-3 Normal video - no sync suppression ..........................................................................................................................2-5 Figure 2-4 Sync suppression .........................................................................................................................................................2-5 Figure 2-5 Normal video..................................................................................................................................................................2-6 Figure 2-6 Video inversion..............................................................................................................................................................2-6 Figure 2-7 Display indications of STANDBY options...................................................................................................................2-8 Figure 2-8 MVP II block diagram ..................................................................................................................................................2-10 Figure 3-1 Front panel of MVP II.....................................................................................................................................................3-1 Figure 3-2 Rear panel of MPV II-N ..................................................................................................................................................3-7 Figure 3-3 Label next to sliding door...........................................................................................................................................3-12 Figure 4-1 Rack mounting for the MVP II ......................................................................................................................................4-3 Figure 4-2 MVP II/C6M interconnection.........................................................................................................................................4-4 Figure 4-3 Satellite receiver/VC II Plus SD/CMTS/MVP II/C6M interconnection ........................................................................4-5 Figure 4-4 MVP II/C6M interconnection ( HRC phase-locked configuration) ............................................................................4-7 Figure 4-5 C8M-*-*/MVP II IF interfacing ........................................................................................................................................4-8 Figure 4-6 MVP II/C8M-*-* interfacing using the CW output........................................................................................................4-9 Figure 4-7 MVP II / C8U-* interfacing using CW output .............................................................................................................4-10 Figure 4-8 Satellite receiver/CMTS/MVP II/C6M interconnection..............................................................................................4-11 Figure 4-9 Analog satellite receiver/CMTS/MVP II/C8M-*-* connections..................................................................................4-12 Figure 4-10 DSR-4500 / CMTS / MVP II / C8U-* non-phase lock ................................................................................................4-13 Figure 4-11 Satellite receiver/VC II Plus SD/CMTS/MVP II/SA6350 interconnection...............................................................4-14 Figure 4-12 Satellite receiver/VC II Plus SD/CMTS/MVP II/CTM20 interface ............................................................................4-15

iv Contents


Figure 4-13 MVP II/SA 8556-007 Scrambler/C6M interface ....................................................................................................... 4-16 Figure B-1 AM timing......................................................................................................................................................................B-1 Figure B-2 VBI timing......................................................................................................................................................................B-2 Figure B-3 6 dB sync suppression................................................................................................................................................B-2 Figure B-4 Inversion reference pulse used in baseband scrambling........................................................................................B-3 Figure B-5 Video low filter frequency response and group delay .............................................................................................B-4 Figure B-6 Audio clear mode .........................................................................................................................................................B-5 Figure B-7 2H audio privacy mode................................................................................................................................................B-6 Figure B-8 Stereo privacy mode....................................................................................................................................................B-7

Tables Table 2-1 Paths to standby............................................................................................................................................................. 2-8 Table 3-1 Front panel connections and functions....................................................................................................................... 3-1 Table 3-2 Information to determine the proper audio mode....................................................................................................... 3-5 Table 3-3 Level indicator when active........................................................................................................................................... 3-6 Table 3-4 Interpretation of LED indicators ................................................................................................................................... 3-6 Table 3-5 Use of audio indicators.................................................................................................................................................. 3-6 Table 3-6 Rear panel connections and functions ........................................................................................................................ 3-7 Table 3-7 Emulation mode switches ........................................................................................................................................... 3-10 Table 3-8 Options mode switches ............................................................................................................................................... 3-11 Table 3-9 Internal switches .......................................................................................................................................................... 3-12 Table 3-10 SW3 switch functions ................................................................................................................................................. 3-13 Table 3-11 Information accessed on SERVICE CODE display ....................................................................................................... 3-14 Table 5-1 Information provided in mode tables ........................................................................................................................... 5-1 Table 5-2 Mode definition listed by mnemonic ............................................................................................................................ 5-2 Table 5-3 Standard operating mode characteristics ................................................................................................................... 5-3 Table 5-4 Non-standard modes ..................................................................................................................................................... 5-5 Table 5-5 Security operation modes ............................................................................................................................................. 5-6 Table 5-6 Special and alignment operating modes ..................................................................................................................... 5-8 Table 5-7 Option DIP switches....................................................................................................................................................... 5-9 Table 5-8 SYNC mode switches..................................................................................................................................................... 5-10 Table 5-9 Descriptions of the scrambling modes set by the SYNC mode switches ................................................................ 5-11 Table 5-10 VIDEO mode switch functions..................................................................................................................................... 5-12 Table 5-11 Descriptions of the scrambling operation modes set by the VIDEO mode switches............................................ 5-13 Table 6-1 Fault indicators............................................................................................................................................................... 6-3


Section 1 Introduction

The Motorola® Modulating Video Processor, MVP II, is designed to scramble video and provide audio privacy on a user-selected channel in a CATV system. Only authorized set-top terminals can interpret the scrambling information and descramble these signals appropriately for channel viewing. While the MVP II can function independently as a high performance CATV modulator, it is designed to operate in a system incorporating an addressable controller.

The MVP II is a feature and performance-enhanced version of the original MVP scrambler. This unit can be used with CFT-3300 set-tops (with the MVP II-LS, Line Shuffler option board) and all STARCOM® pay and addressable set-tops by emulating any previous General Instrument encoder.

The MVP II is designed for greater flexibility of installation and provides an increased number of standard operating modes. As a result, the MVP II offers improved compatibility with other equipment and increased signal security options.

Figure 1-1 illustrates the front and rear panels of the MVP II:

Figure 1-1 Front and rear views of the MVP II

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VIDEO MOD

AUDIO DEV

AUDIO/VIDEOAUDIO IN

VIDEO OUT

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CLEAR

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IF OUT

AUX IFIN

INTERCARRIERIN

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REMOTE ADDRESS SERVICE CODE EMUL 1 6 7 12OPTIONS

AUXALAR M GND

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STD Y

100-240V , 50-60 Hz, 0.4/0.25A, 35W~

1-2 Introduction


Using This Manual This manual is organized into six sections and makes extensive use of tables to assist you in using the many mode options and operating parameters that are available in the MVP II.

Section 1 Introduction includes a brief description of the MVP II, identifies the information contained in this manual, and provides you with return repair instructions and phone numbers in case you need assistance.

Section 2 Overview provides general information about the MVP II. This includes a description of the features, a block diagram, and theory of operation.

Section 3 Controls and Indicators identifies all controls, indicators, and displays.

Section 4 Installation describes each step of the installation process.

Section 5 Operation describes the modes of operation and summarizes their characteristics in a series of tables.

Section 6 Troubleshooting provides troubleshooting tips.

Appendix A Specifications provides technical specifications for the MVP II.

Appendix B Waveform Examples provides examples of signal waveforms for reference and diagnostic troubleshooting.

Related Documentation The following manuals describe equipment that can be used with the MVP II:

C6M/C6MP Commander 6® Modulator Installation and Operation Manual

C6M-II Commander 6® Modulator Installation Manual

Commander IV® Processor and Modulator Installation Manual

C6U Commander 6® Upconverter Installation Manual

C8M-L-*/C8M-H-* Commander™ 8 Modulator Installation Manual

C8U-L/C8U-H Commander™ 8 Upconverter Installation Manual

DSR-1500 Installation Manual

DSR-4500 Installation Manual

BTSC Encoder Model CMTS Installation Manual

Although these documents provide information that may be of interest to you, they are not necessary to install or operate the MVP II.

Introduction 1-3


Document Conventions Before you begin using the MVP II, familiarize yourself with the stylistic conventions used in this manual:

SMALL CAPS Denotes silk screening on the equipment, typically representing front and rear-panel controls, I/O connections and indicators (LEDs).

* (asterisk) Indicates that there are several versions of the same model number and the information applies to all models. When the information applies to a specific model, the complete model number is given.

Italic type Denotes a displayed variable, a variable that you must type, or is used for emphasis.

If You Need Help If you need assistance while working with the MVP II, contact the Motorola Technical Response Center (TRC):

Inside the U.S.A.: 1-888-944-HELP (1-888-944-4357)

Outside the U.S.A.: 1-215-323-0044

Online: http://www.motorola.com/broadband, click HTML/Modem Version, click Customer Support, then click Web Support.

The TRC is open from 8:00 AM to 7:00 PM Eastern Time, Monday through Friday and 10 AM to 6 PM Eastern Time, Saturday. When the TRC is closed, emergency service only is available on a call-back basis. Web Support offers a searchable solutions database, technical documentation, and low priority issue creation/tracking 24 hours per day, 7 days per week.

Calling for Repairs If repair is necessary, call the Motorola Repair Facility at 1-800-227-0450 for a Return for Service Authorization (RSA) number before sending the unit. The RSA number must be prominently displayed on all equipment cartons. The Repair Facility is open from 8:00 AM to 5:00 PM Central Time, Monday through Friday.

When calling from outside the United States, use the appropriate international access code and then call 956-541-0600 to contact the Repair Facility.

When shipping equipment for repair, follow these steps:

1 Pack the unit securely.

2 Enclose a note describing the problem.

3 Enclose a copy of the invoice that verifies the warranty status.

1 Ship the unit PREPAID to the following address:

Motorola, Inc. Broadband Communications Sector Attn: RSA #___________ 5401 North Beach Street Dock 122 Fort Worth, Texas 76137

http://www.motorola.com/broadband


Section 2 Overview

This section provides general information, a description of features and basic functions, and a block diagram of the MVP II.

Although the MVP II produces some scrambling modes that may not be recognized by all subscriber set-topss, the unit is compatible with all Motorola RF and baseband descrambling set-topss. The MVP II can function as a replacement for the following RF scrambler encoders: SSE-200AN, DSE-1000, DSE-1001, DSE-1010, DSE-1110, DSE-1111.

The front and rear panel switches and displays provide operational information quickly and easily. The MVP II can be controlled locally from front panel switches or remotely by an addressable controller: operational control can be selected either at the rear panel or through an access door on the top cover.

New and Improved Features The MVP II has the following new and improved features to enhance performance, increase flexibility, improve signal security, and make use of the product easier:

The auxiliary IF switch box is relocated internal to the MVP II.

Service code and remote address push-button thumbwheel switches are replaced by rotary hex switches.

A system fault output is added to the rear panel terminal block. The conditions that cause the output to go low (ground) are presented in Section 6, “Troubleshooting” .

The audio and video test point connectors on the front panel are combined and controlled with two switches labeled AUDIO/VIDEO and IN/OUT.

Adjustments for video depth of modulation and audio deviation are added to the front panel.

Three rotary hex switches located beneath the top cover door control descramble timing, scramble timing, and alternate modes.

In standby, with the level control at maximum, the IF output level is now +45 dBmV minimum Picture Intermediate Frequency (PIF).

Audio input impedance (600 Ohms balanced/50 K Ohms unbalanced) is selectable from the rear panel.

A 12 dB input level attenuator and new audio Automatic Level Control (ALC) circuit is selectable from the rear panel.

2-2 System Overview


The location of controls, displays, and connections are shown in Figures 2-1 and 2-2:

Figure 2-1 Location of front panel controls and displays

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VIDEO MOD

AUDIO DEV

AUDIO/VIDEOAUDIO IN

VIDEO OUT

SYNCV

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VIDEO SYNCSTDY

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VIDEO

CLEAR

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CLEAR

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Setvideo/sync

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Audiomode

display

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door

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label

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label

Figure 2-2 Location of rear panel controls and connections

+ G - + G -MVP II

IF OUT

AUX IFIN

INTERCARRIERIN

OFF ON

V. FILTER

OFF ON

OFF ONBIPHASE

IN

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INVIDEOPROCOUT

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AUXALARM GND

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STDY

100-240V , 50-60 Hz, 0.4/0.25A, 35W~

Terminalstrip

OptionsSetremote

addresses

Setservicecodes

Setemulation

mode

Detailed descriptions are provided in Section 3, “Controls and Indicators”.

System Overview 2-3


Several specific features designed to improve general operation include:

Stereo Interfaces The MVP II provides two BTSC stereo interfaces: 4.5 MHz and composite baseband. The desired interface is chosen via a switch on the rear panel, and a STEREO LED on the front panel indicates which interface is selected.

Remote Operation An MVP II can be controlled by an ACC-4000 addressable controller. This address selectable feature is beneficial for loading queue entries into the unit to execute timed service code switching for offering pay-per-view events.

Security The MVP II offers enhanced scrambling systems to improve security. Brief descriptions of the security features are found in Section 5, “Operation” . However, preventing piracy involves many technical, legal, and logistical issues and is much more complex than simply invoking the latest countermeasure.

Emulation Modes There are three basic emulation modes in the MVP II to support RF and baseband products and mixed mode systems that incorporate both types of set-topss. The three fundamental emulation modes are:

RF Emulation The unit scrambles the video signal by suppressing the sync information. Timing

and data information are amplitude modulated (AM) on the sound carrier. When emulating a DS/E, several multi-mode scrambling algorithms can be employed to provide enhanced signal security.

Baseband Emulation All of the features of DS/E emulation mode are available. Several baseband video inversion functions, and audio privacy, are also available. This mode uses an in-band data scheme that is multiport compatible and does not require AM modulating on the sound carrier.

Mixed Emulation Used when both RF and baseband-type set-topss reside in the same system. Both data formats are transmitted and the operating modes are limited to the various sync suppression functions that are compatible with both set-topss.

2-4 System Overview


Video Scrambler Video scrambling is accomplished by suppressing the signal level in the horizontal and vertical blanking intervals and by inverting the active picture level. The mechanisms of video scrambling and the actions that initiate them are described below:

Sync Suppression The MVP II scrambles video by suppressing the signal levels in the horizontal and

vertical blanking intervals. This prevents unauthorized TV receivers from locking on to the sync pulses during these intervals, resulting in a scrambled picture. Normal video with no sync suppression is illustrated in Figure 2-3. For comparison, sync suppression is illustrated in Figure 2-4.

In all operating modes, suppression can be set to 6 dB, 10 dB, or switched at a pseudorandom rate between these two. Suppression level change can also be initiated by a scene change. Figure B-3 in Appendix B, “Waveforms”, illustrates a 6 dB sync suppressed, zero Average Picture Level (APL) video signal.

Video Inversion When operating in Baseband Emulation mode, the MVP II can provide additional scrambling by inverting the active picture level, and suppressing sync. Signals can be transmitted as either clear or inverted video and can be pseudorandomly switched between these types. Switching can also be initiated by a scene change. For comparison, normal video is illustrated in Figure 2-5, and inversion is illustrated in Figure 2-6.

The MVP II also inverts the incoming video signal about a 50 APL reference. This results in a picture in which the brightness levels are the opposite of those in the incoming signals (for example, white becomes black). The output signal can be switched from inverted to clear, either dynamically or on a scene change, in the same fashion as sync suppression levels are changed. Figure B-4 in Appendix B, “Waveforms”, illustrates an inverted 50 APL video signal.

Scene Change The suppressed sync levels are changed based on the occurrence of a scene change in the video. When a scene change is sensed, and the sync suppression level is changed, scrambling is disabled for three seconds to prevent excessive changes due to camera panning.

Scene Change Dynamic The suppressed sync levels are again changed based on the occurrence of a scene change in the video. However, if a scene change does not occur, a pseudorandom switch is made. The pseudorandom rate is selectable (15, 30, 45, or 60 seconds). At the end of each time period, a decision is made on a pseudorandom basis, whether or not to change sync level. Thus, it is virtually impossible to anticipate what the next level of sync suppression will be.

Dynamic - 32 Fields This is a test function that causes sync suppression levels to change from 6 dB to 10 dB, to clear every 32 fields. This function is used for factory alignment and should not be used during normal operation.

System Overview 2-5


Figure 2-3 illustrates normal video with no sync suppression:

Figure 2-3 Normal video - no sync suppression

IRE:FLTVolts0.8

0.6

0.4

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-0.2

50.0

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-50.0

Normalsync

-15.0 -10.0 -5.0 0.0 5.0 10.0 15.0 20.0 25.0Microseconds

Figure 2-4 illustrates sync suppression:

Figure 2-4 Sync suppression

IRE:FLTVolts

0.4

0.2

-0.2

-0.4

-0.6

50.0

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Suppressedsync

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2-6 System Overview


Figure 2-5 illustrates normal video:

Figure 2-5 Normal video

IRE:FLTVolts0.8

0.6

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Figure 2-6 illustrates video inversion:

Figure 2-6 Video inversion

IRE:FLTVolts0.8

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Invertedvideo

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F1L100

System Overview 2-7


Audio Privacy In baseband emulation mode, two audio privacy features are provided:

2H Audio Privacy With a baseband audio input and the INTERCARRIER switch off, the baseband audio signal

is band-limited to 15 kHz by a Low Pass Filter (LPF) and pre-emphasized. In the 2H position, this signal is then frequency modulated onto a subcarrier with a frequency equal to two times the horizontal scanning frequency before being modulated to sound IF. This is illustrated in Figure B-7 in Appendix B, “Waveforms”. The Automatic Level Control (ALC) circuit can be disabled on the rear panel using option switch 3. The deviation limiter is always active. This function is not compatible with a BTSC stereo signal.

Stereo Privacy When audio privacy and BTSC stereo compatibility are required, the Stereo Privacy (SP) function can be used. The source of the stereo signal must be from an external stereo encoder and delivered to the MVP II on the audio subcarrier (4.5 MHz for NTSC). When a proper emulation mode is selected and the AUDIO function switch is in the down position, the intercarrier signal is mixed to 4.75 MHz below the picture carrier (at IF).

An unmodulated carrier at normal spacing (4.5 MHz below picture) is also present at the IF output, 15 dB below the modulated sound carrier. This is illustrated in Figure B-8 in Appendix B, “Waveforms”.

In-Band Service Data In-band service data refers to the information inserted by the MVP II that is specific to the scrambled service chosen. This information is sent within the channel via the video or sound carrier, and used by the set-top/descrambler for proper recovery of that service. Information regarding the two types of data is presented below:

AM Data When in any RF emulation mode, descrambling information including timing, service code, and other channel-specific data, is transmitted by amplitude modulating the sound carrier as shown in Figure B-1 in Appendix B, “Waveforms”. In addition to the standard descrambling information, false or spurious information can be transmitted to confuse signal pirates.

VBI Data When in any baseband emulation mode, descrambling information, service code, and other channel specific data is transmitted during a video line in the Vertical Blanking Interval (VBI). The information is encoded as the presence or absence of a 120 IRE peak-to-peak 3.58 MHz signal on the selected line. This information is transmitted once during every vertical blanking interval. Any previous information on the selected line (18) is replaced with the VBI data stream. This is illustrated in Figure B-2 in Appendix B, “Waveforms”.

2-8 System Overview


Audio Inputs Audio signals can be interfaced to the MVP II by one of three methods. The methods, listed below, allow the MVP II to be easily connected to most audio sources:

Monaural Baseband Audio Input

In the clear setting, with a baseband input and the INTERCARRIER switch off, the baseband audio signal is band-limited (15 kHz LPF) and pre-emphasized before being modulated to sound IF. The ALC circuit can be disabled by placing option switch 3, located on the rear panel, in the down position. The deviation limiter is always active, and the front panel deviation control can be used to trim the audio level 6 dB from the center detent position of the potentiometer.

BTSC Baseband Audio Input

A composite BTSC stereo signal from an external stereo encoder can be applied to the baseband audio input terminals of the MVP II. Option switch 11 must be in the down position to process the signal properly. In this position, the low pass filter, pre-emphasis, and ALC circuits are bypassed and the deviation limiter is disabled. The front panel deviation control can be used to trim the audio level 6 dB from the center detent position of the potentiometer. Audio privacy functions are disallowed with this setting.

Audio Intercarrier Input

With external audio subcarrier input and the INTERCARRIER switch on, the audio that is modulated on the externally supplied audio subcarrier is mixed to sound IF. With this setting, the baseband audio section of the MVP II is powered down and the audio level indicator is on. For wiring information, see Figure 5-2 in Section 4,”Installation”.

Addressable Control A Motorola addressable controller, such as the ACC-4000, can remotely control the operating modes of the MVP II by sending a formatted serial datastream through the Data Commander equipment to the bi-phase input of the MVP II.

The status of the MVP II can be monitored by assessing a datastream sent from the bi-phase output of the Data Commander equipment to the addressable controller.

The bi-phase input and output are 75 Ohm F-type connector ports.

Standby Operating Function In STANDBY, all scrambling is disabled. The three paths to STANDBY are described in Table 2-1. The corresponding displays are shown in Figure 2-7:

Table 2-1 Paths to standby

Priority Mode Initiated By

1 Local STANDBY Front panel STDY switch in up position

2 Contact STANDBY Rear panel STDY lug is grounded

3 Remote STANDBY Standby queue command

System Overview 2-9


Figure 2-7 Display indications of STANDBY options

Local standby

Contact standby

Remote standby

The MVP II does not process audio or video in STANDBY. The following functions are also disabled:

All video and sync scrambling

2H Privacy reverts to Mono BB Clear

Stereo Privacy reverts to 4.5 MHz Clear

All VIDEO, SYNC scramble, and AUDIO indicators are off

RF, BB, and OP LEDs are off

Microprocessor controlled options (Option switches 4 through 12)

All In-band data (AM and/or VBI)

The following functions continue to function in STANDBY:

Option switches 1, 2, 3, and 11, if enabled

Checking for a valid intercarrier condition

STEREO indicator is on if 4.5 MHz is selected and valid

STEREO indicator is on if Stereo BB option is selected (Option switch 11 is on)

Addressable Control Processing

Fault Code handling (see Service Code Fault Indicators in Section 6, “Troubleshooting”)

Video clamp and AGC

Clear Operating Function Although scrambling is disabled when using the Clear function, Motorola data is still transmitted (AM and/or VBI). The following functions continue to function in CLEAR:

Option switches 1, 2, 3, and 11 if enabled

Checking for a valid intercarrier condition

STEREO indicator is on if 4.5 MHz is selected and valid

STEREO indicator is on if Stereo BB is selected (Option Switch 11 is on)

2-10 System Overview


Addressable Control Processing

Fault Code handling

Video AGC

Power Backup The MVP II contains a rechargeable vanadium pentoxide lithium battery to maintain power to the internal memory in the event of a power failure. As delivered from the factory, this battery may not be fully charged. It is recommended that after cabling is complete, the MVP II be powered up for 48 hours to charge the battery. After this charging period, power failures of up to seven days do not alter the internal MVP II memory, and the unit comes on line retaining the previous configuration. If the power outage lasts longer than seven days, the MVP II may have to be reconfigured.

System Overview 2-11


Block Diagram A block diagram of the MVP II is shown in Figure 2-8:

Figure 2-8 MVP II block diagram

Audi

oin SW

3

SW11

SW1 SW

2

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12 d

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Section 3 Controls and Indicators

The MVP II can be quickly and easily setup for operation using switches, indicators, and displays located on the front and rear panels. This section describes each of these features and provides information to help you use them effectively.

Front Panel The MVP II front panel operating controls and connections are illustrated in Figure 3-1:

Figure 3-1 Front panel of MVP II

0-

+0-


VIDEO MOD

AUDIO DEV

AUDIO/VIDEOAUDIO IN

VIDEO OUT

SYNCV

C

VIDEO SYNCSTDY

LOC

REM

VIDEO

CLEAR

SC

FAULT

INV

DYN

OVER

SYNC

CLEAR

10dB

DYN

6dB

SC

AUDIO

CLEAR

STEREOPRV

LEVEL

MODEBB RF

SERVICE CODE

OPSND COMP

-20dBIF MVP II-N

A

B

C

D

E

F

G

H I J

K L

M

N O P Q

R

S

Identification and functional descriptions of all front panel items are provided in Table 3-1:

Table 3-1 Front panel connections and functions

Key Indicator Function

A VIDEO MOD The video depth of modulation adjustment is a limited range adjustment that compensates for errors in the video/sync ratio of the incoming signal. The potentiometer has a center detent position at which a video signal with the proper 2.5:1 video/sync ratio yields 85% video depth of modulation.

The video clamp and AGC internal to the MVP II correct variation in video size 6 dB (0.5 to 2 volts peak-to-peak). Since most incoming signals have some sync compression (typically 2 IRE by measurement of random sources), an initial depth of modulation setting of 90% yields 92% after correction by the AGC.

B AUDIO DEV

The audio deviation adjustment is a limited range adjustment that compensates for errors in the amplitude of the incoming signal. The potentiometer has a center detent position that yields 25 kHz deviation for a 0 dBm input. The adjustment is post ALC (if enabled) and has a range of 6 dB. For a graphical illustration of this adjustment, see Figure B-7 in Appendix B,” Waveforms”.

C AUDIO

VIDEO

The audio and video test points share a common BNC-type connector. This switch selects which signal is available at the test point.

3-2 Controls and Indicators



D IN

OUT

This switch selects input or output of the selected audio or video signal.

E

This BNC-style connector is used to monitor either the audio or video signal. The output impedance is 600 Ohms in the audio position, and 75 Ohms in the video position.

F V

C

This switch controls the output of the Sync monitoring connector allowing you to use either composite or vertical sync to trigger test equipment.

G

This BNC test point is designed to provide a signal source for a low (75 Ohm) impedance load such as an oscilloscope or waveform monitor sync input.

H

0-

+

VIDEO

Push-button switch that selects video scrambling modes. See Video Mode Switch Settings in Section 5, “Operation”, for a description of switch positions.

I

0-

+

SYNC

Push-button switch that selects sync scrambling modes. See Sync Mode Switches in Section 5, “Operation”, for a description of switch positions.

J LOC

REM

In the LOC position, this switch provides local control of the MVP II by use of the front and rear panel switches. The green LOC LED is illuminated.

In the REM position, control of the MVP II is transferred to an addressable control system. The yellow REM LED is illuminated.

The status of the MVP II can be read by the Addressable Controller in either Local or Remote operation.

K STDY

With this switch in the STDY position, scrambling modes are not functional and scrambling displays are not illuminated. The composite IF output signal is not scrambled and no data are transmitted. The red STDY LED is on, and the SERVICE

CODE indicator shows a standby condition as illustrated in Figure 2-7 in Section 2, “Overview”. All other indicators, except the FAULT and STEREO (if selected), are off.

Controls and Indicators 3-3



L AUDIO

CLEAR

STEREOPRV

LEVEL

MODE

The MVP II accepts an audio signal in three formats: monaural baseband, BTSC baseband, and modulated intercarrier. The assumption is made that if the signal source is a modulated intercarrier, the format is BTSC, and the front panel STEREO indicator is illuminated.

In addition to the input formats, two audio privacy modes are available. The input signal format and selected emulation mode are factors in deciding if either of these modes can be used. Table 3-2 is included to help you determine the proper audio modes.

The AUDIO LEVEL indicator is a three-state (green/red/off) LED that:

Determines correct baseband input level. Table 3-2, Table 3-3, and Table 3-5 provides additional information on how to determine the input signal.

Determines audio mode. See Table 3-4 for information on how to interpret the AUDIO LEVEL indicator.

M

MODE

With the AUDIO MODE switch up and the MVP II in local operation, the unit is in Audio Clear and the CLEAR LED is illuminated. With the switch down, the unit is in Audio Privacy and the PRV LED is illuminated (see Audio Mode Display in this section.) Refer to Section 5, “Operation”, and Appendix B, “Waveforms”, for more information regarding the use of audio privacy.

N VIDEO

CLEAR

SC

FAULT

INV

DYN

OVER

The VIDEO mode display indicates the status of video scrambling:

CLEAR Clear video out

INV Inverted video out

SC Scrambling changes on a scene change

DYN Scrambling changes pseudorandomly unless a scene change override occurs

FAULT Video Fault (check incoming video)

OVER Ratio of sync level to peak video out of spec (check incoming video)

See Video Mode Indicators in this section for more information on this display.

O SYNC

CLEAR

10dB

DYN

6dB

SC

This display indicates the status of sync scrambling:

CLEAR Clear sync

6dB Sync suppressed by 6 dB

10dB Sync suppressed by 10 dB

SC Sync suppression level changes on a scene change

DYN Sync suppression level changes pseudorandomly unless a scene change override occurs

With the MVP II in Local and the EMUL mode and OPTIONS switches on the back panel set for RF, Baseband, Mixed Mode, or SSE modes, the SYNC section LEDs indicate the mode selected by the SYNC push-button switches on the front panel.

In Remote Operation, the LEDs indicate the mode selected by the Addressable Controller. If the Dynamic or Scene Change function is selected, the 6dB and 10dB LEDs alternate in a random fashion.




P

BB RF

SERVICE CODE

OP

This is a digital display of the service code as set by:

The rear panel SERVICE CODE switch in the local position

The addressable controller in remote operation

Fault codes, described in Service Code Fault Indicators in Section 6, “Troubleshooting”, are displayed if a problem exists. The decimal points indicate the following options (from left to right):

BB VBI data

RF AM data

OP Data or Timing Camouflage options selected

Q

SND

Sound IF carrier level adjustment. Used to set the sound-to-picture carrier level ratio.

R -20dB

Composite IF output monitoring connector. – 20dB test point used to monitor the IF level at the output and sound-to-picture carrier ratio. This is an F-type connector.

S

COMP

Composite IF carrier level adjustment. Adjusts the IF level for interfacing to the upconverter.

Audio Mode Display Table 3-2 is designed to help you determine the proper audio mode(s).

To use this table:

1 Determine the input signal format.

2 Note the first line in the table that gives the modes for input signal format.

3 Determine if the selected emulation mode allows privacy.

4 Check the table for the necessary switch positions and possible options (such as ALC).



Table 3-2 Information to determine the proper audio mode

Input Signal Format Mono BB Stereo BB Intercarrier 4.5MHz

Available Modes CLR PRV (2H) CLR CLR PRV (SP)

Error

Valid Emulation Modes All 1, 8 and A All All 1, 8 and A

Audio Mode Switch Up Down Don't care Up Down

Intercarrier Switch Off Off Off On On On

Option Switch 11 (BTSC) Off Off On Don't Care

Don't Care

ALC Available Yes Yes No No No

Deviation Limiter Active Yes Yes No No No

Audio Input Impedance Selectable

Yes Yes Yes No No

Audio Input Attenuator Available Yes Yes Yes No No

Deviation Control Active Yes Yes Yes No No

Displays

CLR (LED) On Off On On Off Off

PRV (LED) Off On Off Off On Off

STEREO (LED) Off Off On On On Off

F4 (flashing display) No No No No No Yes

Level Indicator Active Yes Yes No (Green)

No (Off) No (Off)

Operating mode used if an error condition occurs

N/A Mono or Stereo BB (See Note

1)

N/A N/A 4.5 MHz Clr

Mon BB Clr (See Note 2)

Note 1: The error condition is from selecting a privacy mode with an illegal emulation mode. Note 2: The error condition results from the absence of the intercarrier signal with the INTERCARRIER switch ON.



Audio Level Indicator The following table shows the relationship between the input and the AUDIO LEVEL indicator display:

Table 3-3 Level indicator when active

Input Signal Mono BB Stereo BB 4.5 MHz LEVEL Indicator Active Always Green Off Off

The following table describes how to interpret the active AUDIO LEVEL indicator display:

Table 3-4 Interpretation of LED indicators

ALC State LED Indicator Status ALC is on (deviation limiter active)

Always Red Input signal is too high or too low. Check the input signal size. Adjust the source level or use the MVP II input attenuator to correct the input signal.

Usually Green OK

ALC is off (deviation limiter active)

Always Red Input signal is too high. Since the ALC is off, the level indicator is green unless an over condition occurs. Check the input signal size. Adjust the source level or use the MVP II input attenuator to correct the input signal.

Usually Green OK

Flashing Red Deviation Limiter is active. This is analogous to adjusting the audio level on a cassette deck where an occasional over condition is acceptable. The front panel control can be used to fine-adjust the deviation. Most operators compare audio level to an unprocessed signal, such as an off-air signal.

The following table describes how to use the AUDIO indicators to determine the input signal:

Table 3-5 Use of audio indicators

If the Mode is: the STEREO LED is: the LEVEL Indicator is: the Input Signal should be Clear On Green BTSC BB

Clear On Off 4.5 MHz

Prv On Off 4.5 MHz (SP Mode)

Prv Off Green/Red Mono BB (2H Mode)

Clear Off Green/Red Mono BB



Video Mode Indicators The VIDEO LEDs indicate the mode selected by the VIDEO push-button switch on the front panel only when the MVP II is in Local operation, and the Emulation mode and OPTIONS switches on the back panel are set for Baseband mode. In Remote operation, the LEDs indicate the mode selected by the addressable controller. If the Dynamic (DYN LED is on) or Scene Change (SC LED is on) function is selected, the CLEAR and INV LEDs alternate in a random fashion.

In RF emulation mode, the LEDs are not illuminated. In Mixed emulation mode, the LEDs show CLEAR.

A red VIDEO FAULT or OVER LED indicates one of the following:

VIDEO FAULT LED On No Video is present. Check the SERVICE CODE indicator on the front panel. F7 on the display means the video is absent. Check the AUDIO/VIDEO monitoring connector on the front panel. The switches should be in the VIDEO and IN positions. If no signal is present, check the VIDEO IN connector on the back panel.

Incorrect Sync signals. Check the sync signals at the SYNC monitoring connector on the front panel.

OVER LED On Indicates that the ratio between peak active video and Sync tip is incorrect. Check that

the incoming video is within specification. Small errors can be eliminated by adjusting the front panel VIDEO MOD control.

Rear Panel The MVP II rear panel operating controls and connections are illustrated in Figure 3-2:

Figure 3-2 Rear panel of MPV II-N

+ G - + G -MVP II-N

IF OUT

AUX IFIN

INTERCARRIERIN

OFF ON

V. FILTER

OFF ON

OFF ONBIPHASE

IN

BIPHASEOUT

INVIDEOPROCOUT

AUDIO OUT AUDIO IN

0 1 2

3 4

5 6 7 8 9

0 1 2

3

4 5

6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

01

23456789AB

CD

E

F


AUXALAR M GND

A B

C

D

E

F G

H I J

KL

M N O

P

Q

R

S

PIX LOIN

STD Y

100-240V , 50-60 Hz, 0.4/0.25A, 35W

Identification and functional descriptions of all rear panel items are provided in Table 3-6:

Table 3-6 Rear panel connections and functions


A MVP II-N

Power cord connector. Acceptable for use with NEMA Style 5-15R ac receptacles supplying nominal 120 volts.

B

IF OUT

The composite IF output signal is used as the input to the upconverter. This is a 75 Ohm F-type coaxial connector.




C AUX IFIN

Auxiliary IF input is used to connect an auxiliary IF source if the MVP II occupies the only IF input of the upconverter and there is a need for IF switching, i.e., emergency alert override required. The AUX IF IN port is activated by grounding the AUX terminal on the rear panel terminal strip. This is a 75 Ohm F-type coaxial connector.

D

INTERCARRIERIN

OFF ON

INTERCARRIER input and slide switch. When a baseband audio signal is modulated at the intercarrier frequency, i.e., BTSC stereo encoder, the signal can be applied to the INTERCARRIER input. Moving the slide switch to the ON position enables this port. When enabled, the front panel LED labeled STEREO is illuminated. This is a 75 Ohm F-type coaxial connector.

E

OFF ON

PIX LOIN

External picture local oscillator 45.75 MHz IF carrier signal input and slide switch. This is a 75 Ohm F-type coaxial connector.

This is an optional input used if needed to insert a coherent IF carrier for phase-locked upconversions. When this signal is used, the slide switch MUST be in the ON position. If this switch is on without an input signal, there is no IF output from the MVP II.

F

BIPHASEIN

Addressable Data Stream input (BIPHASE IN). This is a 75 Ohm F-type coaxial connector.

This input is employed when a remote Addressable Controller is used to control the MVP II. Properly formatted serial data is transferred to the MVP II from the Addressable Controller via this input.

G BIPHASE

OUT

Addressable Data Stream Output (BIPHASE OUT). This is a 75 Ohm F-type coaxial connector.

This output is employed when a remote Addressable Controller is used to control the MVP II. It provides a path for data from the MVP II to the Addressable Controller.

H

0 1 2 3

4 5 6 7 8 9 0 1 2

3 4

5 6 7 8 9 0 1 2 3

4 5 6 7 8 9

REMOTE ADDRESS

The REMOTE ADDRESS rotary hex, selection switches are used to set an address by which a remote Addressable Controller can recognize a specific MVP II.

I

0 1 2 3

4 5 6 7 8 9 0 1 2

3 4

5 6 7 8 9 0 1 2 3

4 5 6 7 8 9

SERVICE CODE

The SERVICE CODE rotary hex, selection switches set the service code sent by the MVP II to set-tops when in Local operation. All set-tops do not recognize all service codes. In Remote operation, service codes are set by the remote Addressable Controller.

J

01234

56 7 8 9 A B

CD

EF

EMUL

The emulation mode switch position functions are listed in Table 3-7.




K ALARM

The ALARM output can be used to detect a failure condition either in the MVP II or in other equipment that provides signals to the MVP II. The ALARM output is low for any of the following conditions:

INTERCARRIER switch is on and signal is not present (F4)

Internal logic failure (F6)

No video (F7)

No power

Alignment mode selected

See Service Code Fault Indicators in Section 6, “Troubleshooting”, for more information regarding fault (F) codes.

L AUX

The AUX IF input is selected when the auxiliary IF terminal strip contact is grounded.

M STDY

The MVP II is placed in STANDBY when the STDY terminal strip contact is grounded. The SERVICE CODE display indicates CSB. STANDBY, when invoked by a contact closure on the rear terminal block, is accessed by three routes: local, contact, and remote.

N + G -

AUDIO OUT

The processed audio output (with the unit in Audio Privacy mode), provides processed baseband audio frequency modulating (FM), a 2H subcarrier with Automatic Level Control (ALC), and a band limited noise interference signal. In the Audio Clear mode, this output is processed baseband audio with ALC and pre-emphasis. There is no audio output when the INTERCARRIER switch is in the ON position.

O + G -

AUDIO IN

The baseband audio input terminals accept monaural or composite BTSC baseband stereo signals. This signal can be delivered in single-ended (one signal wire and a ground return) or differential form (two opposite polarity signal wires and a ground return).

If single-ended delivery is used, the minus (−) input terminal must be connected to the ground terminal.

P

1 6 7 12OPTIONS

This twelve position OPTIONS DIP switch is used to set audio and scrambling options. Table 3-8 provides a listing of the switch numbers and their identification. For more detailed information on the use of the OPTIONS switches, refer to Table 5-7, Section 5, “Option Modes”.

Q PROCOUT

This processed video output provides processed baseband (video clamped) with Automatic Gain Control (AGC) and control information inserted in the vertical blanking interval (Baseband emulation or Mixed emulation modes). Video can be scrambled depending on the MODE

switch settings on the front panel. This is a 75 Ohm F-type coaxial connector.




R V. FILTER

OFF ON

The input video filter slide switch engages a low pass filter with a – 3 dB point of approximately 3.58 MHz (color subcarrier frequency). The V. FILTER switch should be in the ON position when the MVP II is set with the AM data (timing and data AM modulated on the sound carrier) enabled. Plots of the nominal filter frequency and group delay response are illustrated in Figure B-5 in Appendix B, “Waveforms”.

S IN

The video input requires a baseband video signal meeting NTSC system M-format specifications. This is a 75 Ohm F-type coaxial connector.

Table 3-7 Emulation mode switches

Recommended Video Mode Switch Settings Switch Position Description Select B before A or C Select E before D or F Any other setting

0 RF x x x

1 Baseband x x x

2 Mixed x x x

3 SSE x x x

4 Alternate * BB only RF only Mixed

5 Eagle * BB only RF only Mixed

6 Sinewave * BB only RF only Mixed

7 Tri-mode BB only RF only Mixed

8 BB Tri-mode x x x

9 Combo 1 BB only RF only Mixed

A Mixed Video x x x

B external tagging x x x

C unused (RF) x x x

D unused (RF) x x x

E unused (RF) x x x

F Alignment x x x

x = Does not apply

* = No longer supported



Table 3-8 Options mode switches

DIP Switch Position Option Switch Description 1 Audio Input Impedance (600/50 K)

2 Audio Input Attenuator (on/off)

3 Audio ALC (on/off). This new feature includes a separate deviation limiter circuit that is not inhibited by the ALC on/off switch.

4 Unused

5 Timing Camouflage

6 Data Camouflage

7 Combo 0

8 Combo 2

9 Pioneer Scene Change

10 Sync Processor

11 Baseband BTSC

12 Timing Camouflage 2



Internal Switches (Top Cover) A small sliding door in the top cover, as illustrated in Figure 2-1 in Section 2, “System Overview”, provides access to three hexadecimal switches. Switches SW1, SW2, and SW3 are set at the factory and do not require adjustment for normal system conditions.

Figure 3-3 illustrates the label affixed to the top cover, next to the sliding door. This label shows the location of the switches beneath.

Figure 3-3 Label next to sliding door

Internal switch positions

Warning: When changing the EPROM, please be sure to remove ac power and use proper handling to avoid electrostatic discharge (ESD).

EPROM

Descramble timingEagle/Hamlin

tag controlSW1SW3

Scramble timingSW2

The identification and functions of these switches are provided in Table 3-9:

Table 3-9 Internal switches

Switch Number Identification Function SW1 Descramble Timing Descramble timing is defined as the distance between the 50%

point of the leading edge of the AM timing pulse on the sound carrier and the start of scrambling. SW1 is factory set to position 6 and each step moves the pulse 140 ns. Lower numbers advance the pulse while higher numbers delay the pulse.

SW2 Scramble Timing Scramble timing is defined as the distance between the 50% point of the leading edge of scrambling to the 50% point of the leading edge of horizontal sync. SW2 is factory set to position 6 and each step moves the pulse 140 ns. Lower numbers advance the pulse while higher numbers delay the pulse.

SW3 Eagle/Hamlin Tag Control (also used for SA and other custom tag control modes)

Used to switch between Eagle, Hamlin, SA, and other custom tag control modes as illustrated in Table 3-10.



Table 3-10 SW3 switch functions

Setting Name Description

0 ELBB ON

Enables End of Line Big Burst.

1 SAXEN1 Disables the VBI LPF during lines 11,12,13,19,20 allowing SA 8600X data to be inserted on those lines. The End of Field (EOF) burst is moved back to Line 260. Line 13 Big Burst moved to Line 14. 0 APL pedestals added to lines 22, 261 & 262. Moves end of scrambling 2 lines earlier. Used when SA time shift is enabled and older SA(<8600X) boxes are installed.

2 SAXEN2 Disables the VBI LPF during lines 11,12,13,14,15,19,20,23 allowing SA 8600X data to be inserted on those lines. The End of Field (EOF) burst is moved back to Line 260. Line 13 Big Burst moved to Line 14. 0 APL pedestals added to lines 22, 261 & 262. Moves end of scrambling 2 lines earlier. Used when SA time shift is enabled and older SA(<8600X) boxes are installed

3 SAXEN3 Disables the VBI LPF during lines 11,12,13,19,20 allowing SA 8600X data to be inserted on those lines. The End of Field (EOF) burst is moved back to Line 261. Line 13 Big Burst moved to Line 14. 0 APL pedestals added to lines 22 and 262. Moves end of scrambling 1 line earlier. Used when only 8600X boxes are installed

4 SAXEN4 Disables the VBI LPF during lines 11,12,13,14,15,19,20,23 allowing SA 8600X data to be inserted on those lines. The End of Field (EOF) burst is moved back to Line 261. Line 13 Big Burst moved to Line 14. 0 APL pedestals added to lines 22 and 262. Moves end of scrambling 1 line earlier. Used when only 8600X boxes are installed

5 L23E Enables 50 APL pedestal on L23 and start of scrambling out one line. This mode emulates the C1.3 and prior releases that are needed for Pioneer compatibility.

6 L13E (DBS only)

Same as standard DBS but adds L13 (@120IRE) in all modes (clr, 6db, 10db).

7 160E (DBS only)

Sets the Big Burst level to 160IRE in all modes (rather than just 10dB).

8 N/A -----

9 TC3E 3rd TC mode. Moves TC2 pulse from timing to data position

A Z17B Blanks Line 17… Needed when CFT2000Z boxes are operating in GI mode.

B VS5X Moves end of scrambling and descrambling earlier (to L261). Needed for RF system that complained of some TV and VCR instability.

C SDB Adds 4 cnts to front edge of scrambling pulse… Needed for some versions of BB5 boxes.

D WIRL Adds 0IRE pedestals to L261 and L262. Needed by wireless XMTRs peak detect/metering circuits.

E LS_En Locally disables scrambling, LSSDC, and VBI LPF. Used when Line Shuffler board is installed.

F ELBB OFF

Disables End of Line Big Burst



Status Displays The SERVICE CODE display on the front panel shows information on various rear panel and internal settings. To access this information,

1 Put the MVP II in Remote operation.

2 Use the SYNC switch as described in Table 3-11.

Table 3-11 Information accessed on SERVICE CODE display

Display Function SYNC Switch Position

Description

OPBB R F

On-Screen Messages

4 Displays r in the left digit when messaging is enabled and OFF with all 3 digits when disabled. Err displayed indicates error conditions. Message data is transmitting when the BB indicator is on.

OPBB R F

Encryption Indication

5 Displays S (standard encryption ) or E (enhanced encryption) in left digit when encryption is enabled and OFF with all 3 digits when disabled. The middle digit indicates the encryption key in use (0•15). The right digit indicates the mode of encryption (0•3). Queue key A or B is active when the BB indicator is on. Queue key indexing is active when the RF indicator is on. Key rotation is active when the OP indicator is on.

OPBB R F

Option Board Status

6 Refer to your option board operation and installation manual.

OPBB R F

Option Board Status


OPBB R F

Option Board Status


OPBB R F

Extended Tag 9 Displays extended tag (1•256) when enabled and OFF when disabled. Tag is purchasable when the OP indicator is on.

OPBB R F

Extended Tag Offset

A Displays t in the left digit and the extended tag offset (0•63) in the center and right digits when enabled and OFF with all 3 digits when disabled. The tag is purchasable when the OP indicator is on.



Display Function SYNC Switch Position

Description

Setting Alloweda a

b b

c cd de e

f fg g

OPBB R F

Options a-Switch 5 b-Switch 6

c-Switch 7 d-Switch 8

e-Switch 9 f-Switch 10

g-Switch 11

BB and RF-Switch 12

B The 12-position DIP switch on the rear panel is divided into two groups. The first four switches directly control circuit functions such as the audio input impedance and cannot be read by the µP. Switches 5 to 12, if active, light the corresponding section of the left and right digits in the display.

Local Remote

OPBB R F

Emulation Mode

C The current emulation mode settings for both local and remote are shown as hexadecimal numbers in the display.

OPBB RF

Logic Version D Displays the operational logic version.

OPBB R F

Firmware (Code) Version

E Displays the processor code revision.

OPBB R F

Device Address F Displays the last 3 digits (most significant) of the device address (for firmware versions C1.3 and below). Receiving biphase data when the BB indicator is on. Device is addressed through the data stream when the RF indicator is on. Device is transmitting upstream when the OP indicator is on.


Section 4 Installation

Listed below are the steps required to install the MVP II:

1 Determine the emulation modes compatible with the set-top base.

2 Set the emulation mode.

3 Select and set options.

4 Select and set scrambling modes.

5 Select and set the service codes.

6 Select LOC/REM and set remote address.

7 Perform system set up (mount in rack, make required cable connections, etc.).

Determining the Appropriate Emulation Modes Using the information provided in Section 5, “Operation” , select the modes that are compatible with your set-top terminal base.

To determine the compatible emulation modes:

1 Compare the emulation modes for each set-top type.

2 Determine the mode or modes compatible with all of the set-tops in your system.

3 Write down your selections.

If both RF and Baseband set-tops are used in the system, Mixed Mode Emulation must be the mode that is used. Neither Video Inversion nor Audio Privacy is available in the mixed mode.

Setting the Emulation Mode To set the emulation mode:

1 Using Table 3-7 in Section 3, “Controls and Indicators”, find the emulation mode switch position corresponding to the mode determined above.

2 Set the emulation mode switch on the rear panel (hexadecimal switch labeled 0-F) to that alphanumeric value.

Setting the Options Once the basic mode has been set, various options can be added to enhance security. These options consist of three types:

Those that can be added to the current mode.

Those that have no effect because of the current mode.

Those that are disallowed. This type cannot be entered.

Select the options desired, and set on the 12-position OPTIONS DIP switch on the rear panel.

4-2 Installation


Setting Scrambling Modes The scrambling modes allowable are determined by the basic mode previously selected.

1 Select the switch for the sync suppression mode desired from Table 5-8 in Section 5, “Operation” .

2 Set the SYNC mode push-button switch on the front panel.

3 If BB emulation is used, select the switch for the sync suppression mode desired from Table 3-7 in Section 3, “Controls and Indicators” .

4 Set the VIDEO mode push-button switch on the front panel.

Setting Service Codes Set the service codes desired on the three rotary hex switches located on the rear panel. The switches may be set to any number from 000 to 999. Valid service codes are 1 through 256.

Setting Local/Remote Operation Local/Remote operation is selected by using the LOC/REM toggle switch on the front panel. In Local operation, all control functions are selectable from switches on the front and rear panels.

In Remote operation the MVP II is controlled by an Addressable Controller that communicates with the MVP II via the bi-phase input and output.

The MVP II status, whether in Local or Remote, can be read by the Addressable Controller.

Setting the Remote Address When in remote operation, it is necessary to set a unique address for each MVP II in the system. This address must be a number in the range of 260097 to 260999. Only the last three digits can be set using the REMOTE ADDRESS switches located on the back panel.

Setting an address out of the prescribed range results in a fault code being displayed on the front panel. The remote address can be displayed on the SERVICE CODE indicator. See Status Displays in Section 3, “Controls and Indicators”, for details.

Setting Up the System The MVP II can be used with a variety of headend equipment. The type of equipment used determines the configurations that are necessary. Appendix C, “Compatible Set-tops”, shows some of the commonly used modulator/encoder combinations and their connections to the MVP II. Arrangements other than those shown are possible to meet specific needs.

Installation 4-3


Mounting In a typical installation, the MVP II is mounted in a standard 19-inch rack above its associated modulator, as shown in Figure 4-1. To ensure an adequate flow of cooling air, a space of at least 1.75 inches (1U spacing) should be provided above and below the modulator and the MVP II.

CAUTION!

To maximize product life, refer to National Electric Code (NEC) guidelines for proper grounding of the MVP II to equipment racks and to the grounding system of the building.

Figure 4-1 Rack mounting for the MVP II

1.75"spacing

Rear supports(part # 213-883-000)

Front

4-4 Installation


Cabling Use 75-Ohm coax for all connections to and from the MVP II except for baseband audio. Cables should be as short as practical.

The INTERCARRIER slide switch should be in the OFF position if baseband audio is connected to the audio input terminals on the back panel.

The PIX LO IN port is used to phase lock at IF. The corresponding switch must be OFF unless a proper input signal is connected.

A basic configuration is shown in Figure 4-2:

Figure 4-2 MVP II/C6M interconnection

+ G - + G -MVP II

IF OUT

AUX IFIN

INTERCARRIERIN

OFF ON

V. FILTER

OFF ON

OFF ONBIPHASE

IN

BIPHASEOUT

INVIDEOPROCOUT

AUDIO OUT AUDIO IN

0 1 2

3 4

5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1 2

3 4

5 6 7 8 9 0123456789

AB

CD

E F


AUXALAR M GND

PIX LOIN

STD Y

100-240V , 50-60 Hz, 0.4/0.25A, 35W~

Basebandvideo in

Tocombiner

Basebandaudio

AC 115VIN INOUT OUT AUX PRGM

RF OUT PIF SIF IF IN COMP IFOUT CW OUT

EXT SUBCARIN

VIDEO IN

GG

SUBCARAUX

PRGMG+ -

AUDIO A

G+ -AUDIO BVIDEO B

AB

REF OUT REF IN

C6M

MVP II

C6M: IF AGC must be disabled

"AUX"

"G"

Installation 4-5


A widely used configuration is shown in Figure 4-3:

Figure 4-3 Satellite receiver/VC II Plus SD/CMTS/MVP II/C6M interconnection

+ G - + G -MVP II

IF OUT

AUX IFIN

INTERCARRIERIN

OFF ON

V. FILTER

OFF ON

OFF ONBIPHASE

IN

BIPHASEOUT

INVIDEOPROCOUT

AUDIO OUT AUDIO IN

0 1 2

3 4

5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1 2

3 4 5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1 2

3 4

5 6 7 8 9 01

23456789AB

CD E F


AUXALARM GND

PIX LOIN

STDY

100-240V , 50-60 Hz, 0.4/0.25A, 35W~

950-1450MHz IN

VIDEOOUT

COMPOSITEVIDEO

MICROWAVETRAP

FUSE

POWEROFF ON

VIDEO INVERSION

AF OUT

OPTION

115V60 Hz115V60 Hz

C6M

MVP II

CMTS Stereo encoder

VC II Plus SD

Satellite receiver

POWER

AC 115VCOMPOSITEIF OUTPUT

4.5 MHzOUT

IF INPUT

SAP ININOUTINPUT AINPUT B

VIDEOLOOPTHRU

ST/MONO

GND+ - GND GNDRIGHTGND+ -

RIGHTGND+ -

LEFTGND+ -

LEFTGND+ -

BASEBANDOUT

GND+ -A/B

REMOTE

Switch is "ON"

Tocombiner

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

FUSEVIDEOOUT

BYPASSIN

LOOPTHRU

VIDEOIN

GND115 VAC

60 Hz



EXT SUBCARIN

VIDEO IN

GG

SUBCARAUX

PRGMG+ -

AUDIO A

G+ -AUDIO BVIDEO B

AB

REF OUT REF IN

C6M: IF AGC must be disabled.

"AUX"

"G"

4-6 Installation


If a Commander 6 Modulator (C6M) is used, the IF AGC must be disabled. This means that Switch 501, position 8 (of the C6M), must be placed in the ON position. See the C6M/C6MP Commander 6® Modulator Installation and Operation Manual for more information.

Setting IF Levels The following adjustments should be made with the MVP II in STANDBY.

1 Determine the composite IF level required by the modulator from the modulator IF input specification.

2 Attach a spectrum analyzer to the COMP IF output monitoring connector on the front panel. Use the COMP IF carrier adjustment to set the composite IF carrier level to 20 dB less than that required by the modulator (the output monitor contains a 20 dB pad).

3 Use the SND IF level adjustment to set the desired sound IF carrier level 10 dB down from video (typical).

Upconverting to the RF Channel Usually, a standard CATV modulator is used as the upconverter from the MVP II IF output to the desired RF channel. Ensure that you make this connection after any IF AGC amplifier or disable the IF AGC. This step is necessary because the IF AGC tries to make corrections based on the peak IF level. If you use sync suppression, the peak level is video, the IF level varies with the video, and large variations of amplitude occur. Additionally, ensure that the signal does not pass through the vestigial sideband filter in the modulator. This function is performed by the MVP II and if repeated causes poor video performance and erratic scrambling.

Installation 4-7


Figures 4-4 through 4-13 illustrate interconnections of the MVP II with other typical system components.

Figure 4-4 MVP II/C6M interconnection ( HRC phase-locked configuration)

+ G - + G -MVP II

IF OUT

AUX IFIN

INTERCARRIERIN

OFF ON

V. FILTER

OFF ON

OFF ONBIPHASE

IN

BIPHASEOUT

INVIDEOPROCOUT

AUDIO OUT AUDIO IN

0 1 2

3 4

5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1 2

3 4

5 6 7 8 9 0123456789

AB

CD E F


AUXALARM GND

PIX LOIN

STDY

100-240V , 50-60 Hz, 0.4/0.25A, 35W~

Basebandvideo in

MVP II

Tocombiner



EXT SUBCARIN

VIDEO IN

GG

SUBCARAUX

PRGMG+ -

AUDIO A

G+ -AUDIO BVIDEO B

AB

REF OUT REF IN

C6M


"AUX"

"G"

Audio in(mono)

4-8 Installation


Figure 4-5 C8M-*-*/MVP II IF interfacing

2.5A 250V

T

CW OUTSIF INPIF OUTPIF IN

L(A)B | | |

COMP IF OUTREF IN AUX INPGM IN EXT IN/OUTSIF OUT

B-VIDEO IN-AVIDEO B OUT

RG +

BS SGA MADE IN JAPANGP100-240V~,50-60Hz,0.5A/0.3A,40W Time-lag

REMOTEOUT IN

RF OUT

G + G+ G+

OFF ON OFF ON

IN

OFF ON

PROCOUT VIDEO

V FILTER

AC 115V 240V 35W

IF OUTAUX IF

ININTERCARRIER

INPIX LO

INBIPHASE

INBIPHASE

OUTALARM

AUXSTDY

GND + G - + G -

6 7OPTIONS

1 12

AUDIO OUT AUDIO IN

REMOTE ADDRESS SERVICE CODE EMUL

0 1 2 3

4 5 6 7 8 9 0 1 2

3 4

5 6 7 8 9 0 1 2 3

4 5 6 7 8 9 0 1 2

3 4

5 6 7 8 9 0 1 2 3

4 5 6 7 8 9 0 1 2

3 4

5 6 7 8 9 012345

6 7 8 9 A BC

D

EF

75-ohmterminator

75-ohmterminator

-G+MVP-II

Basebandaudio

C8M-*-*

To outputcombiner network

Basebandvideo

Installation 4-9


Figure 4-6 MVP II/C8M-*-* interfacing using the CW output

2.5A 250V

T


L(A)B | | |



RG +


REMOTEOUT IN

RF OUT

G + G+ G+

OFF ON OFF ON

IN

OFF ON

PROCOUT VIDEO

V FILTER

AC 115V 240V 35W

IF OUTAUX IF

ININTERCARRIER

INPIX LO

INBIPHASE

INBIPHASE

OUTALARM

AUXSTDY

GND + G - + G -

6 7OPTIONS

1 12

AUDIO OUT AUDIO IN


0 1 2 3

4 5 6 7 8 9 0 1 2

3 4

5 6 7 8 9 0 1 2 3

4 5 6 7 8 9 0 1 2

3 4

5 6 7 8 9 0 1 2 3

4 5 6 7 8 9 0 1 2

3 4

5 6 7 8 9 012345

6 7 8 9 A BC

D

EF

PIX LO switchmust be on

-G+MVP-II

Basebandaudio

C8M-*-*

75-ohmterminator

Basebandvideo


4-10 Installation


Figure 4-7 MVP II / C8U-* interfacing using CW output

115-240V*,50-60Hz,0.6A/0.4A,45W 43

GND

GND

1 52

SELECT INPUT (GND) RF OUT MAIN IN AUX IN PGM IN MAIN IN AUX IN PGM IN RF OUT CW OUT REMOTE REF IN

MADE IN JAPAN

OUT IN

CONVERTER A CONVERTER B6

AUX

A

AUX

B

SERIAL NUMBERT

2.5A 250V

TYPE; ET

Use only with a250 V Fuse

OFF ON OFF ON

IN

OFF ON

PROCOUT VIDEO

V FILTER

AC 115V 240V 35W

IF OUTAUX IF

ININTERCARRIER

INPIX LO

INBIPHASE

INBIPHASE

OUT

6 7OPTIONS

1 12

ALARMAUX

STDYGND + G - + G -

AUDIO OUT AUDIO IN


MVP IIBaseband

video

Basebandaudio

PIX LO switchmust be on

+30 dBmV +53 dBmV

To outputcombinernetwork

Referencegenerator

Installation 4-11


Figure 4-8 Satellite receiver/CMTS/MVP II/C6M interconnection

+ G - + G -MVP II

IF OUT

AUX IFIN

INTERCARRIERIN

OFF ON

V. FILTER

OFF ON

OFF ONBIPHASE

IN

BIPHASEOUT

INVIDEOPROCOUT

AUDIO OUT AUDIO IN

0 1

2 3

4 5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1

2 3

4 5 6 7 8 9 0 1

2

3 4

5 6 7 8 9

0 1

2 3

4 5 6 7 8 9 0

123456789A

BC

D

E F


AUXALARM GND

PIX LOIN

STDY

100-240V , 50-60 Hz, 0.4/0.25A, 35W~

IF input950 to 1450 MHz

-30 to -55 dB

+18 to +24 Vdcfrom externalpower supply

CMTS Stereo encoder

Satellite receiver

POWER


4.5 MHzOUT

IF INPUT


VIDEOLOOPTHRU

ST/MON O


RIGHTGND+ -

LEFTGND+ -

LEFTGND+ -

BASEBANDOUT

GND+ -A/B

REMOTE

audiocompositebaseband video in out

70 MHz IF input950-1450 MHz

FUSE

GND

GND

GND

DATA

-

DATA

+

CLOC

K -

CLOC

K +

MONO

-

MONO

+

R -

L -L + R +

VC S

YNC

GND

GND

GND

GND

LNB

IN

LANG

120 VAC50 Hz45 V

Basebandstereoaudio

Video

RF outputto systemcombiner



EXT SUBCARIN

VIDEO IN

GG

SUBCARAUX

PRGMG+ -

AUD IO A

G+ -AUD IO BVIDEO B

AB

REF OUT REF IN

C6M

MVP II


Switch is "ON"

Video

"AUX"

"G"

4-12 Installation


Figure 4-9 Analog satellite receiver/CMTS/MVP II/C8M-*-* connections

2.5A 250V

T


L(A)B | | |



RG +


REMOTEOUT IN

RF OUT

G + G+ G+

POWER


4.5 MHzOUT

IF INPUT


VIDEOLOOPTHRU

ST/MONO


RIGHTGND+ -

LEFTGND+ -

LEFTGND+ -

BASEBANDOUT

GND+ -A/B

REMOTE

75-ohmterminator

75-ohmterminator

CMTS

MVP II

C8M-*-*

OFF ON OFF ON

IN

OFF ON

PROCOUT VIDEO

V FILTER

AC 115V 240V 35W

IF OUTAUX IF

ININTERCARRIER

INPIX LO

INBIPHASE

INBIPHASE

OUTALARM

AUXSTDY

GND + G - + G -

6 7OPTIONS

1 12

AUDIO OUT AUDIO IN


0 1 2 3

4 5 6 7 8 9 0 1 2

3 4

5 6 7 8 9 0 1 2 3

4 5 6 7 8 9 0 1 2

3 4

5 6 7 8 9 0 1 2 3

4 5 6 7 8 9 0 1 2

3 4

5 6 7 8 9 01234

56 7 8 9 AB

CD

EF

Intercarrier switchmust be on

CAUTIONR I S K O F E L E C T R I C S H O C K

REFER SERVICING TO QUALI FIED SERVICE PERSONNEL.

TO REDUCE THE RISK OF ELECTRI C SHOCK,DO NOT REMOVE COVER ( OR BACK).NO USER-SERVICEABLE PARTS INSIDE.

CAUTIO N:

VIDEO OUTPUTDATA CLOCK ADS5-8 LEFT RIGHT MONO GND

LOOP-THRU950-1460 MHz

EXT 70 MHzTRAP

RF INPUT950-1450 MHz

COMPOSITEOUTPUT

LANGUAGE OUT+ -OUT+ -

OUT+ -+ - + - OUT+ -

950-1450 MHzRF input

Analog satellite receiver


Installation 4-13


Figure 4-10 DSR-4500 / CMTS / MVP II / C8U-* non-phase lock

115-240V*,50-60Hz,0.6A/0.4A,45W 43

GND

GND

1 52

SELECT INPUT (GND) RF OUT MAIN IN AUX IN PGM IN MAIN IN AUX IN PGM IN RF OUT CW OUT REMOTE REF IN

MADE IN JAPAN

OUT IN

CONVERTER A CONVERTER B6

AUX

A

AUX

B

SERIAL NUMBERT

2.5A 250V

TYPE; ET

Use only with a250 V Fuse

OFF ON OFF ON

IN

OFF ON

PROCOUT VIDEO

V FILTER

AC 115V 240V 35W

IF OUTAUX IF

ININTERCARRIER

INPIX LO

INBIPHASE

INBIPHASE

OUTALARM

AUXSTDY

GND + G - + G -

6 7OPTIONS

1 12

AUDIO OUT AUDIO IN


POWER


4.5 MHzOUT

IF INPUT


VIDEOLOOPTHRU

ST/MONO


RIGHTGND+ -

LEFTGND+ -

LEFTGND+ -

BASEBANDOUT

GND+ -A/B

REMOTE

MVP II

CMTS

Video

Intercarrier switchmust be on

To outputcombinernetwork

DSR-4500

AC~100V - 250V 50 / 60HzRATED POWER 60W

SUM ALARMRELAY 1

RELAY 2 CUE TONE ASYNCHDATA

SYNCH DATA NS DATA

R2 M2

(L2 + R2)

AUDIO OU TVID EO 1

MAINVID EO 2

DIAGN OSTICS

VID EO OUT

PROFESSIONAL VIDEO PRODUCT

CVL2 R1 M1

(L1 + R1)

L1

COMM COMM GND CONTROL TX

C (C ANADA 120V ONLY)

LISTED55T8

CLKN/O N/O ASYNCH TX GND

+ + + + + +

N/C N/C GND CLK

GND GND GND GND GND GND

C OMM

FOR PC NETWORK ONLYDO NOT PLUG INTO

PHONE SYSTEM

INOUT1

DC BLOC KED

OUT2

DC BLOC KED DC BLOC KEDDC PASS

L - BAN D SPLIT TER

OUT3 OUT4

BBOUTPUT

POR T 1L/LHP

POR T 0V/R HP

L - BAN DINPUT

(450mADC M AX)

®

®

75-ohmterminator

+30 dBmV

4-14 Installation


Figure 4-11 Satellite receiver/VC II Plus SD/CMTS/MVP II/SA6350 interconnection

+ G - + G -MVP II

IF OUT

AUX IFIN

INTERCARRIERIN

OFF ON

V. FILTER

OFF ON

OFF ONBIPHASE

IN

BIPHASEOUT

INVIDEOPROCOUT

AUDIO OUT AUDIO IN

0 1 2

3 4

5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1 2

3 4 5

6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1 2

3 4

5 6 7 8 9 01

23456789A

BC

D

E F


AUXALARM GND

PIX LOIN

STDY

100-240V , 50-60 Hz, 0.4/0.25A, 35W~

950-1450MHz IN

VIDEOOUT

COMPOSITEVIDEO

MICROWAVETRAP

FUSE

POWEROFF ON

VIDEO INVERSION

AF OUT

OPTION

115V60 Hz115V60 Hz

SA6350

MVP II

CMTS Stereo encoder

VC II Plus SD

Satellite receiver

POWER


4.5 MHzOUT

IF INPUT


VIDEOLOOPTHRU

ST/MONO


RIGHTGND+ -

LEFTGND+ -

LEFTGND+ -

BASEBANDOUT

GND+ -A/B

REMOTE

Switch is "ON"

To combiner

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

FUSEVIDEOOUT

BYPASSIN

LOOPTHRU

VIDEOIN

GND115 VAC

60 Hz

115V 50 Hz

J1 J2 J3 J4 J5 J6 J7J8 J9 J10

J11 J12 J13

IN IN

OUT OUT

AUDIOIF

VIDEOIF

RF OUT HIGHLEVELIF IN

Installation 4-15


Figure 4-12 Satellite receiver/VC II Plus SD/CMTS/MVP II/CTM20 interface

+ G - + G -MVP II

IF OUT

AUX IFIN

INTERCARRIERIN

OFF ON

V. FILTER

OFF ON

OFF ONBIPHASE

IN

BIPHASEOUT

INVIDEOPROCOUT

AUDIO OUT AUDIO IN

0 1

2 3

4 5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1

2 3

4 5 6 7 8 9 0

123456789A

BC

D

E F


AUXALARM GND

PIX LOIN

STDY

100-240V , 50-60 Hz, 0.4/0.25A, 35W~

950-1450MHz IN

VIDEOOUT

COMPOSITEVIDEO

MICROWAVETRAP

FUSE

POWEROFF ON

VIDEO INVERSION

AF OUT

OPTION

115V60 Hz115V60 Hz

CTM20

MVP II

CMTS Stereo encoder

VC II Plus SD

Satellite receiver

POWER


4.5 MHzOUT

IF INPUT


VIDEOLOOPTHRU

ST/MONO


RIGHTGND+ -

LEFTGND+ -

LEFTGND+ -

BASEBANDOUT

GND+ -A/B

REMOTE

Switch is "ON"

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

FUSEVIDEOOUT

BYPASSIN

LOOPTHRU

VIDEOIN

GND115 VAC

60 Hz

J10

GND

33 32

IF SWITC

H

FUSE

FUSE

J9

115V 50 Hz

CHANNELOUT

EXT IFIN

4-16 Installation


Figure 4-13 MVP II/SA 8556-007 Scrambler/C6M interface

+ G - + G -MVP II

IF OUT

AUX IFIN

INTERCARRIERIN

OFF ON

V. FILTER

OFF ON

OFF ONBIPHASE

IN

BIPHASEOUT

INVIDEOPROCOUT

AUDIO OUT AUDIO IN

0 1 2

3 4

5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1

2 3

4 5 6 7 8 9

0 1 2

3 4

5 6 7 8 9

0 1 2

3 4

5 6 7 8 9 01

23456789AB

CD E F


AUXALARM GND

PIX LOIN

STDY

100-240V , 50-60 Hz, 0.4/0.25A, 35W~



EXT SUBCARIN

VIDEO IN

GG

SUBCARAUX

PRGMG+ -

AUDIO A

G+ -AUDIO BVIDEO B

AB

REF OUT REF IN

C6M

MVP II


Note: Terminate all unused IF connectors.

AUDIOIF OUTDATA

REPEATERINBAND DATA

OUTINBAND DATA

IN

AUDIOIF IN

J1

J2

J3

J4

J5

J6

DATA TERMINATEOFF

REMOTE CONTROL123456

ONVIDEOIF OUT

VIDEOIF IN

VIDEOBB OUT

VIDEOBB IN

AC

117V 50Hz

FUSE

1A

POWER

ON/OFF

DROPFIELDSC RAMBLE

SA 8556-007 Scrambler

Video from source

Combiner

InOut

Out


Section 5 Operation

The MVP II provides a wide variety of operating emulation modes. The mode of operation chosen by you determines the number of options available. You may find that some of these options are not allowed, and others, although allowed, are not useful. Topics and tables presented in this section provide the information you need to choose the mode(s) that best fit your application.

Emulation Modes The operating emulation modes of the MVP II are divided into four major groups:

Group 1 Standard These modes operate with standard Motorola scramblers. Refer to Standard Modes and Table 5-3.

Group 2 Compatible The MVP II supports some Eagle, Hamlin, and SA compatible modes. With added modules, the MVP II supports Zenith, Tocom, Oak, and fiber (digital and FM links) modes. Refer to Nonstandard Modes and Table 5-4.

Group 3 Security Some security options can be invoked on top of standard or non-standard operating modes. The security modes in this group typically operate independently of all others, although it may be possible to use some additional security options in conjunction with Group 3. Refer to Security Modes and Table 5-5.

Group 4 Special and Alignment These modes are not used in normal operation. The Special modes are reserved for future use. The Alignment mode is for factory testing. Refer to Special and Alignment Operating Modes and Table 5-6.

For your convenience, the name and number of a mode that appears in a column heading, also matches the mode switch number on the rear panel.

The information that appears in the tables is defined and described in Table 5-1. Definitions of abbreviations used in the tables are given in Table 5-2:

Table 5-1 Information provided in mode tables

Item Definition/Options Description Emode Emulation Mode Emulation mode name.

Mode# Mode Number Emulation mode number matches rear panel switch.

Sync Modes Allowed Sync suppression modes allowed. See sync switch settings in Table 5-8.

Display In the sync modes, the display always matches the mode.

Video Modes Allowed Video inversion modes allowed. See video switch settings in Table 5-10.

Display In the video modes, the display always matches the mode.

Audio Mono BB Mode Possible modes if the input signal is monaural baseband audio.

Mono BB Display Possible displays.

Stereo BB Mode Possible modes if the input signal is BTSC baseband audio.

Stereo BB Display Possible displays.

5-2 MVP II Operation


Item Definition/Options Description 4.5 Mode Possible modes if the input signal is a 4.5 MHz Intercarrier.

4.5 Display Possible displays.

Data Service Code Valid service code range.

AM Data (RF LED) Yes, if AM data is enabled.

VBI Data (BB LED) Yes, if VBI data is enabled.

Operations Disallowed Options that cannot be used (12-position DIP switch).

Special Typically indicates a forced condition. For example, the sync processor is forced on in Emodes 1, 5, 8, and A.

Table 5-2 Mode definition listed by mnemonic

Mnemonic Description 2H 2H Audio Privacy

C0 Combo 0

C2 Combo 2

CLEAR or Off CLEAR LED is on if not RF only

DC Data Camouflage

SP Stereo Privacy

Sby Standby

SC Sound Carrier Disable

SYNP Sync Processor is on

TC Timing Camouflage

TC2 Timing Camouflage 2

V = ABC Video Mode Switch = Position A, B or C

V = DEF Video Mode Switch = Position D, E or F

MVP II Operation 5-3


Standard Modes The operating emulation modes of the MVP II are divided into four major groups. The first of these, standard, is subdivided further into four operational modes. Descriptions of the four standard operating emulation modes are listed below. The characteristics of these modes are listed in Table 5-3. EMUL 0 refers to position 0 of the emulation mode hex switch on the rear panel.

The standard operating modes are:

01234

56 7 8 9 A B

CD

EF

RF Mode (EMUL 0)

The factory-shipped, default mode of operation. It is full-scene change, dynamic sync suppression scrambler mode. The service code range is 2 to 256 inclusive. The video low pass filter should be enabled in this mode.

01234

56 7 8 9 A B

CD

EF

Baseband Mode (EMUL 1)

Includes all the scrambling functions of RF mode plus all video and audio privacy modes. VBI data is enabled and AM data is disabled.

01234

56 7 8 9 A B

CD

EF

Mixed Mode (EMUL 2)

Same as RF mode except that VBI data is enabled. The VIDEO CLEAR LED is on. The video low pass filter should be enabled in this mode.

01234

56 7 8 9 A B

CD

EF

SSE Mode (EMUL 3)

A 6 dB sync suppression only mode. In-band timing and data information are AM modulated on the sound carrier. The service code range is 2 to 128 inclusive. All VIDEO mode LEDs on the front panel are off. Sync mode 1 = 6 dB and all other positions are CLEAR. The video low pass filter should be enabled in this mode.

Table 5-3 Standard operating mode characteristics

Emode/mode # Operation Function RF/0 BaseBand/1 Mixed/2 SSE/3

Sync Modes Allowed All All All Sby or 6 dB

Display Matches Mode Matches Mode Matches Mode Matches Mode

Video Modes Allowed None All None None

Display Off Matches Mode CLEAR Off

Audio Mono BB Mode CLEAR CLEAR or 2H CLEAR CLEAR

Mono BB Display CLEAR Matches Mode CLEAR CLEAR

Stereo BB Mode CLEAR CLEAR CLEAR CLEAR

Stereo BB Display CLEAR and Stereo

CLEAR and Stereo

CLEAR and Stereo

CLEAR and Stereo

4.5 Mode CLEAR CLEAR or SP CLEAR CLEAR

4.5 Display CLEAR and Stereo

Matches Mode and Stereo

CLEAR and Stereo

CLEAR and Stereo



Emode/mode # Operation Function RF/0 BaseBand/1 Mixed/2 SSE/3

Data Service Code 2 to 256 2 to 256 2 to 256 2 to 128

AM Data (RF LED) On Off On On

VBI Data (BB LED) Off On On Off

Options Disallowed N N N N

Special SYNP

Compatible Data N N N N

Non-standard Modes The following are non-standard (compatible) operating modes used with the MVP II. Table 5-4 illustrates the characteristics of the nonstandard emulation modes:

01234

56 7 8 9 A B

CD

EF

Hamlin Mode (EMUL 4)

Hamlin descrambling. Hamlin is gated, 6dB sync suppression with the vertical interval left in the clear. Additionally, the vertical interval extends from Line 1 to Line 10 instead of Line 23 in the Motorola system. Switch 4 alone will invoke Hamlin style scrambling. Video mode switches are used to set RF, BB, or MXD mode operation.

This mode can be used as a security mode when the Hamlin tag is set to 0. An additional rotary hex switch connected directly to the TIMING IC sets the Hamlin tag. The Hamlin Tag is independent of the Motorola tagging. In RF mode, the sound carrier data is limited to service code only.

It may be necessary to readjust the scramble timing in order to insure proper descramble operation of the entire set-top base. See Section 3, “Internal Switches,” for setting Hamlin tags and scramble timing.

01234

56 7 8 9 A B

CD

EF

Eagle Mode (EMUL 5)

Eagle scrambling is identical to Hamlin. Only the Eagle tagging differs. Eagle tagging is set using the same rotary switch as for Hamlin tags. See Section 3, “Internal Switches,” for setting Eagle tags.

01234

56 7 8 9 A B

CD

EF

Sinewave Mode (EMUL 6)

This position invokes OAK or Ma/ Com “A” mode scrambling when the sinewave option board is added to the base MVP II. OAK or Ma/ Com style sinewave scrambling is determined by the programming of the sinewave option board while the Video mode switches are used to set RF, BB, or MXD mode operation. RF, BB, and MXD modes have altered definitions in sinewave mode.

RF- Oak timing and data are modulated on the sound carrier instead of standard Motorola information. The service code is limited to the range of 1 to 16.

BB- VBI data inserted and no sound carrier modulation. The service code can extend to 256.



Table 5-4 Non-standard modes

Operation Function Emode/mode # Hamlin/ 4 Eagle/ 6 Sinewave/6

Modes allowed Sby or 6db Sby or 6db Sby or 6db Sync Display Matches Mode Matches Mode Matches Mode

Modes allowed None None None Video Display CLEAR or Off CLEAR or Off CLEAR or Off

Mono BB Mode CLEAR CLEAR CLEAR

Mono BB Display CLEAR CLEAR CLEAR

Stereo BB Mode CLEAR CLEAR CLEAR

Stereo BB Display CLEAR & Stereo CLEAR & Stereo CLEAR & Stereo

4.5 Mode CLEAR CLEAR CLEAR

Audio

4.5 Display CLEAR & Stereo CLEAR & Stereo CLEAR & Stereo

Service Code 2 to 256 2 to 256 1-16 RF

2 to 256 BB

AM Data (RF LED) Off if V=ABC Off if V=ABC Off if V=ABC

VBI Data (BB LED) Off if V=DEF Off if V=DEF Off if V=DEF

Options disallowed CO C2 TC CO CO C2 TC DC

Special SP

Data

Compatible data H E O

Security Modes Descriptions of the security operating modes are listed below. The characteristics of the security modes are listed in Table 5-5. EMUL 7 refers to position 7 of the emulation mode rotary hex switch on the rear panel.

01234

56 7 8 9 A B

CD

EF

Tri-mode (EMUL 7)

Tri-mode is similar to RF mode except that CLEAR is enabled as a scrambling mode.

01234

56 7 8 9 A B

CD

EF

BB Tri-mode (EMUL 8)

This mode is the same as Tri-mode (EMUL 7), however, video inversion replaces CLEAR as the scrambling mode.

01234

56 7 8 9 A B

CD

EF

Combo 1 (EMUL 9)

Combo 1 is an RF or Mixed mode with security enhancements.

01234

56 7 8 9 A B

CD

EF

Mixed Video (EMUL A)

This mode is BB mode with Motorola tagging on the sound carrier. The sound carrier tag data always indicates 6 dB mode.



Table 5-5 Security operation modes

Operation Function Emode/mode # Tri-mode/7 BB Tri-mode/8 Combo 1/9 Mixed Video/A Sync Modes Allowed All All All All

Display Matches Mode Matches Mode Matches Mode Matches Mode

Video Modes Allowed None All None All

Display Off Matches Mode CLEAR or Off Matches Mode

Audio Mono BB Mode CLEAR CLEAR or 2H CLEAR CLEAR or 2H

Mono BB Display CLEAR Matches Mode CLEAR Matches Mode

Stereo BB Mode CLEAR CLEAR CLEAR CLEAR

Stereo BB Display

CLEAR and Stereo

CLEAR and Stereo

CLEAR and Stereo

CLEAR and Stereo

4.5 Mode CLEAR CLEAR or SP CLEAR CLEAR or SP



CLEAR and Stereo


Data Service Code 2 to 256 2 to 256 2 to 256 2 to 256

AM Data (RF LED)

Off if V = ABC Off Off if V = ABC On 6 dB

VBI Data (BB LED)

Off if V = DEF On Off if V = DEF On FM

Options Disallowed

N N TC C2 N

Special SYNP SYNP

Compatible Data N N N N



Special and Alignment Operating Modes Descriptions of the special and alignment operating modes are listed below. The characteristics of these modes are listed in Table 5-6. EMUL B refers to position B of the emulation mode rotary hex switch on the rear panel.

01234

56 7 8 9 A B

CD

EF

ET (External Tagging) (EMUL B)

This mode is used if Motorola baseband set-tops (DPBB-* and CFT-*) are mixed with those of another vendor that requires timing and data information to be AM modulated on the sound carrier with a format that is different from the Motorola format.

This operating mode allows full baseband scrambling of the video signal. Therefore, it is important to choose scrambling modes that are compatible with all of the set-tops being used. Motorola VBI data is inserted. Audio modes are disallowed, since the sound I.F. carrier is generated external to the MVP II. See Section 4,”Installation”, for a typical hardware configuration.

01234

56 7 8 9 A B

CD

EF

Unused (EMUL C)

Not used.

01234

56 7 8 9 A B

CD

EF

Unused (EMUL D)

Not used.

01234

56 7 8 9 A B

CD

EF

Unused (EMUL E)

Not used. 0123

45

6 7 8 9 A BC

D

EF

Alignment (EMUL F)

This mode is for factory setting of sync suppression levels and checking frequency response.



Table 5-6 Special and alignment operating modes

Operation Function Emode/mode # ET/B Unused/C Unused/D Unused/E Alignment/F Sync Modes Allowed None N/A N/A N/A All

Display CLEAR N/A N/A N/A FM

Video Modes Allowed None N/A N/A N/A All

Display CLEAR N/A N/A N/A FM

Audio Mono BB Mode CLEAR N/A N/A N/A *

Mono BB Display CLEAR N/A N/A N/A Off

Stereo BB Mode CLEAR N/A N/A N/A *

Stereo BB Display CLEAR and Stereo

N/A N/A N/A Off

4.5 Mode CLEAR N/A N/A N/A *


N/A N/A N/A Off

Data Service Code ** N/A N/A N/A

AM Data (RF LED) Off N/A N/A N/A Off

VBI Data (BB LED) Off N/A N/A N/A Off

Options Disallowed

None N/A N/A N/A None

Special N/A N/A N/A SYNP SC

Compatible Data None N/A N/A N/A None

*Not Optional **These modes default to emulation mode 0.



Option Modes The options available on the MVP II are controlled by 12 DIP switches located on the rear panel as shown in Figure 1-1 in Section 1, “Introduction”. The switches are organized into two groups of six and numbered 1-6 and 7-12 respectively. Note, that when appropriate, the switch function is described in (up/down) order. The function is engaged or “on” when the switch is in the down position. All DIP switches are piano-type. Switch identification and functions are summarized in Table 5-7:

Table 5-7 Option DIP switches

Switch Identification Function Option LED 1 Audio Input Impedance

(600 Ohms/50 K Ohms) This switch directly controls the audio input impedance. The input impedance is 600 Ohms, balanced, with the switch in the down position (logic high), and 50 kohms, unbalanced (single-ended), with the switch in the up position (logic low). This user option does not impact the control system.

Off

2 Audio Input Attenuator (On/Off)

This switch directly controls the 12 dB audio input attenuator. The attenuator is off with the switch in the up position (logic high), and on in the down position (logic low). This user option does not impact the control system.

Off

3 Audio ALC (On/Off) This switch directly controls the audio ALC circuit. The ALC is on with the switch in the up position (logic high), and disabled, or off, in the down position (logic low). This user option does not impact the control system.

Off

4 Unused Off

5 Timing Camouflage (Off/On)

A signal security option. On

6 Data Camouflage (Off/On) A signal security option. On

7 Combo 0 (Off/On) A signal security option. On

8 Combo 2 (Off/On) A signal security option. On

9 Four Field Scene Change (Off/On)

With this option selected, switch down, the normal two-field scene change becomes a four-field scene change. The four-field mode is used for compatibility with Pioneer set-tops.

Off

10 Sync Processor (Off/On) With this option selected, the MVP II regenerates all horizontal sync pulses. In Baseband mode, the regeneration of the sync pulses is always enabled.

Off

11 Baseband BTSC (Off/On) This switch configures the baseband audio section of the MVP II to accept a BTSC baseband audio signal. With the switch in the up position (logic high), the MVP expects a monaural baseband signal (provided that the INTERCARRIER switch is off). When the switch is down (logic low), the MVP expects the baseband stereo (composite BTSC) signal. This signal is also connected to the microprocessor.

Off

12 Timing Camouflage 2 (Off/On)

A signal security option. On



Scrambling Modes Local control of the MVP II permits scrambling modes to be set using the SYNC and VIDEO push-button switches located on the front panel.

Sync Mode Switch Settings Scrambling modes, set by the SYNC mode switches, are identified in Table 5-8. Functional descriptions of the modes are provided in Table 5-9.

SYNC switch positions 3 to 7 cause the MVP II to switch between 6 dB and 10 dB, except in Tri-mode, where it switches between Clr/6 dB/10 dB. Switch positions B, C, D, E, and F can also be used to display diagnostic modes. See Status Displays in Section 3, “Controls and Indicators”.

Table 5-8 SYNC mode switches

Switch Position

Identification

0 Clear (Shifted timing in Tri-mode)

1 6 dB

2 10 dB

3 Scene Change – Linear

4 Scene Change – Dynamic 15 seconds




8 Scene Change – Linear 6 dB/Clr

9 Scene Change – Dynamic 15 seconds 6 dB/Clr

A Scene Change – Dynamic 45 seconds 6 dB/Clr

B Scene Change – Linear 10 dB/Clr

C Scene Change – Dynamic 15 seconds 10 dB/Clr

D Scene Change – 45 seconds 10 dB/Clr

E Dynamic – 32 fields linear 6dB/10dB (for test only)

F Dynamic – 32 fields linear Clr/10dB (for test only)



Table 5-9 Descriptions of the scrambling modes set by the SYNC mode switches

Switch Position

Function Description

0 Clear The appropriate in-band data is inserted but no scrambling occurs. In Tri-Mode, the AM timing information is shifted 1/2 of a video line.

1 6 dB Horizontal blanking intervals are suppressed 6 dB and the vertical interval is processed as a block, depending on the emulation mode that is selected.

2 10 dB Horizontal blanking intervals are suppressed 10 dB and the vertical interval is suppressed 10 dB as a block.

3 SCL The scrambling mode changes purely on scene change information. The modes change from 6 dB to 10 dB, unless the emulation mode is Tri-Mode, where Clear with shifted timing is enabled.

4-7 SCD A pseudorandom decision is made every time-interval unless a scene change occurs. The scrambling mode changes with the scene change and the dynamic counter are reset. The modes change from 6 dB to 10 dB unless the emulation mode is Tri-Mode, where the mode changes purely on scene change information. The modes change from Clear to 6 dB, unless the emulation mode is Tri-Mode, where Clear with shifted timing is enabled.

8 SCL The scrambling mode changes purely on scene change information. The modes change from Clear to 6 dB, unless the emulation mode is Tri-Mode, where Clear with shifted timing is enabled.

9-A SCD A pseudorandom decision is made every time-interval unless a scene change occurs. The mode changes with the scene change, and the dynamic counter is reset. The modes change from Clear to 6 dB, unless the emulation mode is Tri-Mode, where Clear with shifted timing is enabled.

B SCL The mode changes purely on scene change information. The modes change from Clear to 6 dB, unless the emulation mode is Tri-Mode, where Clear with shifted timing is enabled.

C-D SCD A pseudorandom decision is made every time-interval unless a scene change occurs. The scrambling mode changes with the scene change, and the dynamic counter is reset. The modes change from Clear to 10 dB, unless the emulation mode is Tri-Mode, where Clear with shifted timing is enabled.

E DYN The scrambling mode changes dynamically every 32 video fields from 6 dB to 10 dB, unless the emulation mode is Tri-Mode, where Clear with shifted timing is enabled. This mode is for test purposes only.

F DYN The scrambling mode changes dynamically every 32 video fields from Clear to 10 dB, unless the emulation mode is Tri-Mode, where Clear with shifted timing is enabled. This mode is for test purposes only.



Video Mode Switch Settings Scrambling operation modes set by the VIDEO mode switches are defined in Table 5-10. Descriptions of these modes are given in Table 5-11.

Table 5-10 VIDEO mode switch functions

Switch Position

Function

0 Clear

1 Constant Inversion

2 Scene Change – Linear (no forced mode changes)





7 Dynamic – 32 fields (linear change for test only)

8 Clear

9 Clear

A Clear (F12 Error) – See note 1

B Clear (Valid)

C Clear (F12 Error) – See note 1

D Clear (F13 Error) – See note 2

E Clear (Valid)

F Clear (F13 Error) – See note 2

Note 1: Disables RF data when not in the four standard Motorola modes. Note 2: Disables BB data when not in the four standard Motorola modes.

See Service Code Fault Indicators in Section 6, “Troubleshooting” , for a description of the errors.



Table 5-11 Descriptions of the scrambling operation modes set by the VIDEO mode switches

Switch Position Function Description

0 Clear VBI data is inserted but no scrambling occurs.

1 CI The active video portion of the active field is inverted.

2 SCL The mode changes purely on scene change information.

3-6 SCD A pseudorandom decision is made every time interval unless a scene change occurs. The mode changes with the scene change, and the dynamic counter is reset.

7 DYN Changes dynamically every 32 video fields from Clear to Inverted.

8-9 Clear VBI data is inserted but no scrambling occurs.

A-C Clear These switch positions disable RF data when not in one of the four standard Motorola modes. Position B is the desired position. Positions A and C provide the same function, but an error code is displayed. This windowing provides some protection against accidental switch movement leading to catastrophic system failure.

D-F Clear These switch positions disable BB data when not in the four standard Motorola modes. Position E is the desired position. Positions D and F provide the same function but an error code is displayed. This windowing provides some protection against accidental switch movement leading to catastrophic system failure.

Audio clear and audio privacy are selected from the front panel AUDIO switch. See Front Panel in Section 3, “Controls and Indicators”.

When the MVP II is in Remote operation, the scrambling modes are selected by the addressable controller.


Section 6 Troubleshooting

This section provides information and diagnostic procedures that allow you to identify symptoms and system malfunctions related to the MVP II.

Status Displays If the MVP II is not operating properly, an incorrect emulation mode or a non-compatible option may have been selected. Status Displays in Section 3, Controls and Indicators, describes how to access the status displays. Compare the status display information with the simulation mode tables in Section 4, MVP II Operation.

It is important that the information from the status display and the unit serial number be acquired before calling General Instrument for assistance. This data is required to solve any application problem.

Power On Sequence When the MVP II is powered up, the internal microprocessor goes through a series of checks that are displayed on the SERVICE CODE indicator by the codes PU1 followed by PU2. This indicates a normal power-on sequence.

Alignment Mode Emulation mode F (on the back panel) is alignment mode. This mode is for factory setup and should only be used with a field service engineer’s supervision.

In alignment mode, with the AUDIO mode switch up, A00 is displayed on the SERVICE CODE indicator. This part of alignment mode is used for checking frequency response. The sound carrier is disabled. No external audio subcarrier can be connected when this test is made.

With the AUDIO mode toggle down (in alignment mode), A01 is displayed on the SERVICE CODE indicator. This section of alignment mode is used in the factory to set the following: zero carrier level, 6 dB attenuator level, and 10 dB attenuator level.

CAUTION!

Unauthorized personnel must not make any adjustments. For further information contact your Field Engineer.

Audio Faults See Audio Level Indicator in Section 3, Controls and Indicators, for a complete description and interpretation of all LED indicators.

Video Faults Video faults can be isolated using the two indicators located on the front panel.

6-2 Troubleshooting


Video Fault Indicator If the VIDEO FAULT indicator is red, it is an indication of one of the following:

No video present — check the SERVICE CODE indicator on the front panel (F7 means video absent). Check for video signal at the VIDEO monitoring connector (on the front panel) with the selector switch in the IN position. If there is no signal, check the VIDEO IN connector on the back panel.

Incorrect Sync signals — check the sync signals at the SYNC monitoring connector on the front panel. If out of specification, re-adjust the incoming video level.

Over Indicator If the OVER indicator is red, it indicates that the ratio between peak active video and sync tip level is incorrect. Check and re-adjust the incoming video level.

System Fault A system fault output has been added to the rear terminal block. The conditions that cause the output to go low (ground) and the corresponding fault displays are presented below:

No video (error code 7)

Programmable logic not responding (error code 6)

4.5 MHz not present with intercarrier input port selected (error code 4)

Alignment mode (emulation mode F)

No power

Troubleshooting 6-3


Fault Code Indicators A fault code is displayed when a fault condition exists in either local or remote operation. A service code is not displayed during a fault condition. Fault codes and their corresponding actions are presented in Table 6-1.

Table 6-1 Fault indicators

Code Meaning Action F1 RAM Corruption (zero page) Call for service.

F2 RAM Corruption (system memory) Call for service.

F3 Remote control corrupted Switch to LOC mode. Check bi-phase connections.

F4 No subcarrier present External intercarrier input selected on rear panel and no subcarrier present.

F5 Real-time clock failure Call for service.

F6 Non-responding interface I.C. Call for service.

F7 Video absent Check incoming video connections.

F8 Remote address out of range With REM/LOC switch in REM position, set SYNC mode push-button switch to F and read the remote address on the SERVICE CODE indicator. Reset the address using the back panel switches. Return the unit to its previous operating mode.

F9 Illegal service code Check back panel switches. Check Addressable Computer screen.

F10 Encryption error Check selected encryption mode.

F11 Intercarrier signal present in emulation mode B (EXTERNAL TAGGING)

If the EXTERNAL TAGGING mode is desired, remove intercarrier (4.5 MHz) signal applied to the rear panel.

F12 Hazardous switch position Set SYNC mode switch to position B to disable the AM data.

F13 Hazardous switch position Set SYNC mode switch to position E to disable the VBI data.

Fault codes not listed in Table 6-1 may result when different option boards are installed. Refer to the specific option board manual for a description of fault codes.

MVP I I In s ta l l a t ion and Op era t ion Manu al

Append ix A S p e c i f i c a t i o n s

V i d e o Input 1 V p-p NTSC standard (75 Ohm), RS-170A compliant

Video AGC Range ± 6 dB (0.5 V to 2.0 V p-p)

Video Input Return Loss 25 dB minimum

Video Output 1 V p-p (in Standby); other modes encoded

Video Output Return Loss 25 dB

A u d i o Normal Input Level (attenuator off) 0 dBM (0.775 Vrms)

Normal Input Level (attenuator on) +12 dBM (3.085 Vrms)

Input Attenuator 12 ± 0.5 dB, switchable

Audio ALC Range ± 10 dB

Audio Pre-emphasis 75 µsec ± 5%

Audio Input Impedance 600 Ohm balanced or 50 K Ohm unbalanced, switchable

Audio Output Level 0 dB (± 1 dB relative to the input signal in Standby)

Audio Output Impedance 600 Ohm balanced

S c r a m b l i n g Video Clear/inverted

Sync 0 dB/6 dB/10 dB

Audio Clear/2H Subcarrier/SP Subcarrier

A - 2 S p e c i f i c a t i o n s

MVP I I Ins ta l la t ion and Op era t ion Manua l

C o m p o s i t e I F O u t p u t Picture IF Frequency 45.75 MHz

Sound IF 41.25 MHz

Level (adjustable) +25 dBmV to +45 dBmV

Ext. Pix lo Input Level +40 ≤ Levels ≤ +50 dBmV

Intercarrier (4.5 MHz) Input Level +10 dBmV minimum

Return Loss 15 dB minimum

Sound Carrier Level –15 dB from 45.75 MHz, adjustable ± 5 dB

Sound Carrier Deviation ± 25 kHz ± 2 kHz

Video S/N 65 dB minimum (67 dB typical)

Video Frequency Response 50 Hz to 4.2 MHz ± 1dB

Video Group Delay NTSC system M advance

Video DG 2%

Video DP 2 deg

Video Modulation at Center Detent 85% ± 2%

Typical Adjustment Range ± 5 IRE

Audio S/N –70 dB

Audio THD 0.5%

Audio Frequency Response 50 Hz to 14 kHz ± 1 dB

Audio Deviation at Center Detent 25 ± 2 kHz

Typical Adjustment Range ± 6 dB

Minimal Adjustment Range 4.5 dB

R e m o t e C o n t r o l Bi-Phase In/Out 13,980 bps

Address Selectable (260097 to 260999)

A u x i l i a r y I F S w i t c h D r i v e Actuator Voltage < 0.5 V

Maximum Input Voltage +12 V

Minimum Input Voltage –12 V

S p e c i f i c a t i o n s A - 3


T e s t P o i n t Video Selectable In/Out

Video Test Point Level 1 V p-p into 75 Ohms

Audio Selectable In/Out

Audio Test Point Level 0 dB +1 dB relative to the input signal

Sync Selectable Vertical/Composite

IF – 20 dB (relative to composite IF out)

S t a n d b y I n p u t Actuator Voltage < 0.5 V

Maximum Input Voltage +12 V

Minimum Input Voltage – 12 V

A l a r m O u t p u t Maximum Current Source 0.01 A

Vol (@ 0.01) 0.3 V

A C P o w e r L i n e R e q u i r e m e n t s Voltage 110 V nominal (range 95Vac to 245 Vac)

Frequency 60 Hz

Power 35 watts

P h y s i c a l D i m e n s i o n s Height 1.75 inches

Width 19 inches

Depth 18 inches

Weight 11 pounds

E n v i r o n m e n t a l Space 1.75 inches minimum each side of unit

Temperature 0 to + 45 degrees C


Append ix B Wa v e f o r m E x a m p l e s

The waveforms and signal representations illustrated in this section are provided for visual enhancement of functional descriptions presented throughout the manual.

F igure B -1 AM t im ing

a)

b)

a) Scrambled video signalb) Descrambled timing and data pulse

B - 2 W a v e f o r m E x a m p l e s


F igure B -2 VB I t im ing

F igure B -3 6 d B syn c suppress ion

-100.0

-80.0

-60.0

-40.0

-20.00.0

-0.2

-0.4

-5.0 0.0 5.0 10.0

F1L100

Microseconds

-0.6

IRE:FLTVolts

W a v e f o r m E x a m p l e s B - 3


F igure B -4 Inve rs ion r e fer ence pu ls e used in b aseband sc ramb l i ng

-50.0

0.0

50.0

0.6

0.4

0.2

0.0

F1L100

Microseconds

-0.2

IRE:FLTVolts

-6.0 -4.0 -2.0 0.0 2.0 4.0 6.0 8.0 10.0



F igure B -5 V ideo low f i l t e r f r equen cy r esponse and g roup d e l ay



F igure B -6 Aud io c l ea r mode

2fH 3fH 4fH 5fH 6fH 7fH 8fH 9fHBaseband frequency (1H = 15.625 kHz)

1fH

5

10

15

20

25

30

35

40

45

50

kHz

devi

atio

n

Baseband audio deviatesmain carrier (41.25 MHz)25 kHz peak



F igure B -7 2H aud io p r i v ac y mode

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

25 kHz FM subcarrier deviatesmain carrier (41.25 MHz) 75 kHz peak

The dotted lines show the composite BTSCStereo Spectrum. Since stereo and 2H Audio Privacyoccupy the same spectrum, the two systems are notallowed to operate simultaneously. Frequency shift (FS)privacy mode provides signal privacy and stereo.

Baseband frequency (1H = 15.734 kHz)

1fH 2fH 3fH 4fH 5fH 6fH 7fH 8fH 9fH

kHz

devi

atio

n



F igure B -8 S tereo p r i v ac y mode

250 kHz/divisioncomposite I.F. spectrum

Rel

ativ

e le

vel 1

0 db

/DIV

Offset sound carrier-15 dB from PIXmodulated with program present onexternal 4.5 MHz input

Standard sound carrier-30 dB from PIX

(unmodulated)

41.00 MHz

41.25 MHz

45.750 MHz



The abbreviations and acronyms list contains the full spelling of the short forms used in this manual.

A amperes

ac alternating current

AGC automatic gain control

ALC automatic level control

AM amplitude modulation

APL average picture level

BB baseband

BPF bandpass filter

bps bits per second

C6U-MSI Commander 6 Upconverter-Multistandard International

CATV Community Access Television ( formerly Community Antenna Television)

dB decibels

dBm decibels per milliwatt

dBmV decibels reference one millivolt

DG differential gain

DIP dual in-line packaging

DP differential phase

DS/E digital scrambling encoder

ESD electrostatic discharge

ELBB end-of-line big burst

HPF high-pass filter

Hz hertz

IF intermediate frequency

kHz kilohertz

kohms kilohms

LED light-emitting diode

LPF low-pass filter

MGC manual gain control

MHz megahertz

µsec microsecond

mV millivolt(s)

NEMA National Electrical Manufacturers Association

ns nanoseconds



PIF picture intermediate frequency

PLL phase-locked loop

RAM random access memory

ROM read-only memory

RF radio frequency

s/n signal-to-noise

THD total harmonic distortion

V volts

VBI vertical blanking interval

Vp-p volts peak-to-peak

Vrms volts root-mean-square

411035-001

3/02 MGBI

mvp ii modulating video processor installation and...

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