Grass Valley NV8256-Plus User Manual
NV8256-Plus
Digital Video Router
User’s Guide
NV8256-Plus Digital Video Router — User’s Guide
• Revision: 1.2
• Software Version: -none-
• Part Number: UG0017-02
• Copyright: © 2008 NVISION, Inc. All rights reserved.
• No part of this manual may be reproduced in any form by photocopy,
microfilm, xerography or any other means, or incorporated into any information retrieval system, electronic or mechanical, without the written permission of NVISION, Inc.
• The information contained in this manual is subject to change without notice or obligation.
• All title and copyrights as well as trade secret, patent and other proprietary rights in and to the
Software Product (including but not limited to any images, photographs, animations, video,
audio, music, test, and “applets” incorporated into the Software Product), the accompanying
printed materials, and any copies of the Software Product, are owned by NVISION. The Software Product is protected by copyright laws and international treaty provisions. Customer shall
not copy the printed materials accompanying the Software Product.
Notice
The software contains proprietary information of NVISION Inc.; it is provided under a license
agreement containing restrictions on use and disclosure and is also protected by copyright law.
Reverse engineering of the software is prohibited.
Due to continued product development, the accuracy of the information in this document may
change without notice. The information and intellectual property contained herein is confidential
between NVISION and the client and remains the exclusive property of NVISION. If you find any
problems in the documentation, please report them to us in writing. NVISION does not warrant that
this document is error-free.
FCC Statement
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 instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his own expense.
Declaration of Conformance (CE)
All of the equipment described in this manual has been designed to conform with the required
safety and emissions standards of the European Community. Products tested and verified to meet
these standards are marked as required by law with the CE mark. (See Symbols and Their Mean-
ings on page v.)
ii Rev 1.2 • 20 Oct 08
When shipped into member countries of the European Community, this equipment is accompanied
by authentic copies of original Declarations of Conformance on file in NVISION Broadcast Products offices in Grass Valley, California USA.
Trademarks
NVISION is a registered trademark of NVISION, Inc.
Brand and product names mentioned in this manual may be trademarks, registered trademarks or
copyrights of their respective holders. All brand and product names mentioned in this manual serve
as comments or examples and are not to be understood as advertising for the products or their manufactures.
Software License Agreement and Warranty Information
Contact NVISION for details on the software license agreement and product warranty.
Technical Support Contact Information
NVISION has made every effort to ensure that the equipment you receive is in perfect working
order and that the equipment fits your needs. In the event that problems arise that you cannot
resolve, or if there are any questions regarding this equipment or information about other products
manufactured by NVISION, please contact your local representative or contact NVISION directly
through one of the appropriate means listed here.
• Main Number: 1 (530) 265-1000
Available from 8:00 a.m. to 5:00 p.m., Monday–Friday, Pacific Time.
• Sales: 1 (530) 265-1000
• Toll Free: 1 (800) 719-1900
• Fax: 1 (530) 265-1021
•E-Mail
•E-Mail
• Website: http://www.nvision.tv
•Mail
• Shipping
— Technical Support: nvsupport@nvision.tv
— Sales: nvsales@nvision.tv
NVISION, Inc.
P.O. Box 1658
Nevada City, CA 95959, USA
NVISION, Inc.
125 Crown Point Court
Grass Valley, CA 95945, USA
Note Return Material Authorization (RMA) required for all returns.
NV8256-Plus Digital Video Router • User’s Guide iii
Change History
The table below lists the changes to the NV8256-Plus Digital Video Router User’s Guide.
• User’s Guide Part # UG0017-02
• Software version: -none-
Rev # Date ECO # Description Approved By
1.0 09 Apr 07 12960 New document. DEM/Eng
1.1 07 Aug 08 13430 Updated Configuration chapter to reference the
1.2 20 Oct 08 14426 Removed UniConfig material. Updated formatting.
DEM/Eng
UniConfig User's Guide.
Updated specifications.
DEM
Minor corrections.
iv Rev 1.2 • 20 Oct 08
Important Safeguards and Notices
This section provides important safety guidelines for operators and service personnel. Specific
warnings and cautions appear throughout the manual where they apply. Please read and follow this
important information, especially those instructions related to the risk of electric shock or injury to
persons.
Warning Any instructions in this manual that require opening the equipment cover or
enclosure are for use by qualified service personnel only. To reduce the risk of
electric shock, do not perform any service other than that contained in the
operating instructions unless you are qualified to do so.
Symbols and Their Meanings
The lightning flash with arrowhead symbol within an equilateral triangle alerts the user to the presence of dangerous voltages within the product’s enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle alerts the user to the presence of important
operating and maintenance/service instructions.
The Ground symbol represents a protective grounding terminal. Such a terminal must be connected
to earth ground prior to making any other connections to the equipment.
The fuse symbol indicates that the fuse referenced in the text must be replaced with one having the
ratings indicated.
The presence of this symbol in or on NVISION equipment means that it has been designed, tested
and certified as complying with applicable Underwriter’s Laboratory (USA) regulations and recommendations.
The presence of this symbol in or on NVISION equipment means that it has been designed, tested
and certified as essentially complying with all applicable European Union (CE) regulations and
recommendations.
NV8256-Plus Digital Video Router • User’s Guide v
General Warnings
A warning indicates a possible hazard to personnel which may cause injury or death. Observe the
following general warnings when using or working on this equipment:
• Heed all warnings on the unit and in the operating instructions.
• Do not use this equipment in or near water.
• This equipment is grounded through the grounding conductor of the power cord. To avoid electrical shock, plug the power cord into a properly wired receptacle before connecting the equipment inputs or outputs.
• Route power cords and other cables so they are not likely to be damaged.
• Disconnect power before cleaning the equipment. Do not use liquid or aerosol cleaners; use
only a damp cloth.
• Dangerous voltages may exist at several points in this equipment. To avoid injury, do not touch
exposed connections and components while power is on.
• Do not wear rings or wristwatches when troubleshooting high current circuits such as the power
supplies.
• To avoid fire hazard, use only the specified fuse(s) with the correct type number, voltage and
current ratings as referenced in the appropriate locations in the service instructions or on the
equipment. Always refer fuse replacements to qualified service personnel.
• To avoid explosion, do not operate this equipment in an explosive atmosphere.
• Have qualified service personnel perform safety checks after any service.
General Cautions
A caution indicates a possible hazard to equipment that could result in equipment damage. Observe
the following cautions when operating or working on this equipment:
• When installing this equipment, do not attach the power cord to building surfaces.
• To prevent damage to equipment when replacing fuses, locate and correct the problem that
caused the fuse to blow before re-applying power.
• Use only the specified replacement parts.
• Follow static precautions at all times when handling this equipment.
• This product should only be powered as described in the manual. To prevent equipment damage, select the proper line voltage on the power supply(ies) as described in the installation documentation.
• To prevent damage to the equipment, read the instructions in the equipment manual for proper
input voltage range selection.
vi Rev 1.2 • 20 Oct 08
Table of Contents
Chapter 1 Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Chapter Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
The PDF Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Terms, Conventions and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chapter 2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Product Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Frame Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Signal Rates Supported. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Switching Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Crosspoint Card Slots and Managed Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Combining Input Cards and Output Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Examples of Switching Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Module Slots and Rear Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Front Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Slots and Corresponding Signal Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Rear Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
System Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Router Control System Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Router Control System Expansion Connections . . . . . . . . . . . . . . . . . . . . . . . 13
Video Reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Active Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Control Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Input Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Standard Input Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Filler Input Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Analog-to-SD Input Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Crosspoint Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Left and Right Slot Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Middle Slot Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Minimum Crosspoint Cards Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Status Reporting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Output Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Standard Output Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Monitor Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Frame Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
NV8256-Plus Digital Video Router • User’s Guide vii
Table of Contents
Chapter 3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Preparing for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Rack Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Making Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Power Supply Monitor and Alarms Connections . . . . . . . . . . . . . . . . . . . . . . 28
Power Cords and Branch Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Connecting Power to the NV6257 and the Router. . . . . . . . . . . . . . . . . . . . . . 29
Installing Active Cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Making Signal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Local Signal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Signal Expansion Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Making Router Control System Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Serial Control Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Ethernet Control Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
GSC Node Bus Control Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Control System Expansion Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Terminating Unused Control System Expansion Connections . . . . . . . . . . . . . . . . 42
Making Diagnostic Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Router IP Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Temporarily Connecting to UniConfig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Permanently Connecting to UniConfig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Making Video Reference Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Making Monitor Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Local Monitor Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Monitor Expansion Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Making Alarm Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Alarm Indicator Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
NV6257 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Router Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Chapter 4 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
NVISION Control Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Third-Party Control Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Setting Redundant Crosspoint Card Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Using Remote Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Chapter 5 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
UniConfig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
viii Rev 1.2 • 20 Oct 08
Table of Contents
Chapter 6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
General Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Fuse Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Control Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Input, Crosspoint, and Output Cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Air Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Fan Cleaning and Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Intake Filter Screen Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Obtaining Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Chapter 7 Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Chapter 8 Technical Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Power Specifications (NV6257 PS6000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Physical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Environmental Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Audio Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Video Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Time Code Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Chapter 9 Part Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Frame Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
NV8256-Plus Digital Video Router • User’s Guide ix
Table of Contents
x Rev 1.2 • 20 Oct 08
1. Preface
Chapter 1 provides an overview of the NV8256-Plus (Digital Video Router) User’s Guide. The following topics are discussed:
• Chapter Structure
• The PDF Document
• Terms, Conventions and Abbreviations
Chapter Structure
The following chapters provide detailed instructions for all aspects of NV8256-Plus operation:
• Chapter 1, Preface
and conventions.
• Chapter 2, Introduction
• Chapter 3, Installation
• Chapter 5, Configuration, points to UniConfig.
• Chapter 4, Operation
• Chapter 6, Maintenance
• Chapter 8, Technical Details
specifications, product drawings, and default settings.
• Chapter 7, Glossary
• Appendix 9, Part Numbers
cards for the NV8256-Plus.
•An Index
, (this chapter) outlines easy ways to use this guide; provides a list of terms
, provides an introduction and general description of the router.
, provides installation and connection instructions.
, provides general operation information.
, provides maintenance information.
, provides electrical, video, audio, mechanical, and environmental
, is a glossary.
, presents a list of part numbers for NVISION cables, connectors and
is also provided for your reference.
The PDF Document
This guide is provided in PDF format, allowing you to use Acrobat’s “bookmarks” to navigate to
any desired location. You can also print a hardcopy. Please note:
• Use the Table of Contents or the bookmarks page to jump to any desired section.
• Many hyperlinks are provided within the chapters.
• Use the Index to jump to specific topics within a chapter. Each page number in the index is a
hyperlink.
• Use Acrobat’s ‘Go to Previous View’ and ‘Go to Next View’ buttons to retrace your complete
navigational path.
NV8256-Plus Digital Video Router • User’s Guide 1
1. Preface
• Use the ‘First Page’, ‘Previous Page’, and ‘Next Page’, and ‘Last Page’ buttons to go to the
first, previous, next, or last page within a PDF file.
Note To display the navigation buttons, right-click the Tool Bar area, and check ‘Naviga-
tion’.
• Use Acrobat’s extensive search capabilities, such as the ‘Find’ tool and ‘Search’ tool to perform
comprehensive searches as required.
Terms, Conventions and Abbreviations
The following conventions are used throughout this guide:
• The symbol
• Notes, Cautions and Important messages are presented in note boxes.
• Entries written in bold-face or capital letters denote physical control panel buttons or GUI buttons.
•Click
• Press the
• Entries in single quotes denote a field name, tab name or label.
• The AES reference connection is labeled ‘AES REF 1’.
S denotes either an example or a special message.
Apply to ...
SRC 12 button.
Terms, Conventions and Abbreviations
2 Rev 1.2 • 20 Oct 08
2. Introduction
Chapter 2 provides an introduction to the NV8256-Plus Digital Video Router. It presents the following topics:
• Product Summary
• Signal Rates Supported
• Switching Configurations
• Power Supply
• Module Slots and Rear Connections
• Active Cards
• Frame Expansion
Product Summary
The NV8256-Plus manages standard-definition (SD), high-definition (HD) and 3.0 Gb/s (“3Gig”)
signal routing. See Signal Rates Supported
SD, HD and 3.0 Gb/s signals combined. Support for SD and HD is called Super Wide Band (SWB).
Support for SD, HD, and 3.0
on page 4. The routers can manage SD separately, or
Gb/s is called “3Gig.”
The NV8256-Plus is a robust system capable of supporting signal rate of 10
This enables you to invest in a single router to meet current routing needs and potential future
growth as industry standards evolve.
The router features a flexible I/O design enabling the implementation of a wide range of configurations. A single NV8256-Plus can manage up to 256 inputs and 256 outputs. Using expansion ports,
two routers can be connected together to manage up to 512 inputs and 512 outputs. Within one
router, or between two connected routers, configurations can start at 16 inputs and 16 outputs,
increasing in increments of 16, up to 256 per router. Because inputs and outputs are independent,
configurations are based on 16, but do not have to be squared (i.e., 256×256, 512×512). For example, if using the NV8256-Plus as a standalone router, switching configurations of 16 inputs and 256
outputs, 32 inputs and 256 outputs, 256 inputs and 48 outputs, and so on are valid. Similarly, if two
routers are connected together, non-square configurations of inputs and outputs can be created,
increasing in increments of 16 up to a maximum of 512 inputs and 512 outputs.
In addition, the NV8256-Plus features conversion of video signals from analog composite to SD
and SD to analog composite.
Mb/s up to 3.0 Gb/s.
Frame Rack
The NV8256-Plus mounts in a rack with minimum dimensions of 22RU high by 19″ wide by 18″
deep. When placing the rack in your facility, be sure to leave enough space for air flow through the
NV8256-Plus Digital Video Router • User’s Guide 3
2. Introduction
front of the router and within easy access of an AC power source. For installation instructions, see
Rack Mount
on page 27.
Cooling
The router has a fan tray housing three fans. The fan tray is located at the top of the chassis and
accessed from the front of the frame. The fans draw cooling air from the front of the router, through
the door, and exhaust it through the rear of the frame. The router must have the door correctly
installed and closed for proper airflow through the chassis.
Caution If airflow is impeded, overheating may occur.
There are three removable air filters: two are located on the inside of the door assembly and one
inside the router. It is recommended that you perform regular maintenance on the fan tray and filters. For more information, see Maintenance
Signal Rates Supported
Signal Rates Supported
on page 59.
The NV8256-Plus supports SD, HD, 3Gig and analog composite video signals. Incoming analog
signals are converted to digital format for internal routing. Outgoing SD signals can be converted to
analog composite for distribution.
The following table lists the SMPTE standard and rates for SD, HD and 3Gig signals, and for analog-to-digital and digital-to-analog conversion. Each signal type is managed by a specific input or
output card (circuit board). For a description of each card and corresponding card part number, see
Input Cards
Typ e SMPTE Re-clock At Pass Through
Standard Definition
(SD)
Super Wide Band
(SD and HD combined)
3Gig (SD, HD and
3.0
Gb/s combined)
Analog-to-SD
(analog to SD-SDI)
SD-to-Analog
(SD-SDI to analog)
(page 15) and Output Cards (page 15).
259M
344M
259M
344M
292M
259M
292M
424M
Input: PAL or NTSC analog composite video
Converted to: SMPTE 259M-C, (4:2:2),
Input: SMPTE 259M-C, (4:2:2), 270 Mb/s
Converted to: PAL or NTSC analog composite video
143, 177, 270, 360 and 540 Mb/s 10 Mb/s to 540 Mb/s
143, 177, 270, 360 and
540
Mb/s; 1.483 and 1.485 Gb/s
270, 1.483, 1.485, 2.966 and
2.970
Gb/s
10 Mb/s to 1.5 Gb/s
10 Mb/s to 3.0 Gb/s
270 Mb/s
Switching Configurations
The NV8256-Plus is designed to be highly flexible, enabling the creation of a variety of configurations for managing incoming and outgoing signals. A single router can manage a maximum of
256 inputs and 256 outputs. By connecting two routers together, the number of signals managed
4 Rev 1.2 • 20 Oct 08
2. Introduction
can be doubled to a maximum of 512 inputs and 512 outputs. Each input card and output card manage 16 signals each. This means that switching configurations can be based on 16, increasing in
increments of 16, up to the maximum number of inputs and outputs allowed. Each switching configuration is created by installing crosspoint cards, input cards, and output cards in specific slots on
each router.
Crosspoint Card Slots and Managed Signals
The crosspoint card manages signal switching with each card managing up to 256 inputs and outputs. The router frame has three slots for housing crosspoint cards. (See Figure 2-2 on page 8.)
Depending on the slot in which it is installed, the crosspoint card performs different switching functions. Slots are listed by location when facing the front of the router, as follows:
•Left Slot
•Center Slot
• Right Slot
Switching Configurations
— Manages all inputs and outputs for the local router (inputs 1–256).
— An optional crosspoint card can be installed for redundancy as a backup for
another crosspoint card. The crosspoint card can take over active control from the crosspoint
card installed in the left slot or right slot, but not both. For more information, see Setting
Redundant Crosspoint Card Switching on page 54.
— Manages all signals received through the expansion connections. The crosspoint
card receives signals from a second, connected router (inputs 257–512) and sends the signals to
local outputs 1–256.
Because the crosspoint cards installed in a specific slot manage specific outputs, depending on your
configuration, not all crosspoint cards may need to be installed. For example, if only outputs
1–256 have output cards, then a crosspoint card is only required in the left slot. The right slot can
remain empty. The middle slot is optional.
For more information on inputs and outputs and assigned numbers, see Slots and Corresponding
Signal Numbers on page 9.
Combining Input Cards and Output Cards
When connecting two routers together, different combinations of input cards and output cards can
be installed to meet switching configuration needs while minimizing cost. ‘Standard’ input cards
receive signals from the router’s local input connections and from a second, connected router
through expansion cables. ‘Filler’ input cards receive signals only from expansion cables when two
routers are connected together, but not local inputs. Because filler cards perform less signal processing, they are less expansive then standard input cards. If a switching configuration requires two
routers, but local inputs to only one of the two routers, filler cards can be used in the router not
receiving local inputs.
Output cards manage outgoing signals. If a router is only used for receiving incoming signals, such
as in a 512 inputs and 256 outputs configuration, output cards are not needed on both routers. Output cards are only required on routers distributing outgoing signals through local coaxial connectors.
Examples of Switching Configurations
The following table lists possible switching configurations when two routers are connected
together. For each configuration, the table lists in which slot crosspoint cards are installed, on
which router, what type of input card is used, and if the router requires output cards. For a descrip-
NV8256-Plus Digital Video Router • User’s Guide 5
2. Introduction
tion of each type of card, see Active Cards on page 15. The two connected routers are listed as
Router 1 and Router 2. Although the examples list a full complement of input cards, the number of
cards installed depends on the number of inputs and outputs being managed by a specific switching
configuration. The optional, redundant crosspoint card (installed in the center crosspoint card slot)
is not included in the following examples. Only required crosspoint cards are listed.
Inputs ×
Outputs
256×256 1 1 Left Standard Router 1
256×512 2 2 Router 1: Left
512×256 2 2 Router 1: Left, Right
512×512 2 4 Router 1: Left, Right
Number of
Frames
Number of
Crosspoint
Cards
Crosspoint
Card Slot
Router 2: Right
Router 2: None
Router 2: Left, Right
Type of
Input Card
Router 1: Standard
Router 2: Filler
Router 1: Standard
Router 2: Standard
Router 1: Standard
Router 2: Standard
Power Supply
Output Cards
in Router
Router 1,
Router 2
Only on
Router 1
Router 1,
Router 2
Power Supply
The power supply for the NV8256-Plus is an external, separate frame, the NV6257. The NV6257
uses the NVISION PS6000 series power supply module. The NV8256-Plus router requires four
PS6000 power supply modules. For redundancy, an additional four PS6000 modules can be
installed. The NV6257 can house a total of four primary and four redundant PS6000 power supply
modules. This means that one NV6257 power supply frame can power one NV8256-Plus router
frame.
The PS6000 power supply module accepts a wide range of AC input voltages and produces five
+48 VDC outputs. The power supply automatically senses the AC input voltage (90–130 and 180–
250 VAC) and adjusts to maintain a relatively constant DC output; no voltage selection is required.
The five regulated outputs are directed to modules in the router where on-board regulators produce
the DC voltages required by the local circuits. Each +48VDC output powers one of the five green
LEDs and output test points located on the front of the power supply. Under normal operation, all
five LEDs are lit. For more information, see Indicator LEDs
Figure 2-1 shows the power supply architecture.
90130VAC or
180250VAC In
AC Input, Fuse,
Rectifiers, and Filter
Power Sense
and Limiting
Power Factor
Correction
on page 60.
+48VDC
Regulators (×5)
+48VDC
Out (×5)
Figure 2-1. PS6000 Power Supply Module Diagram
For information on making power supply connections, see Making Power Connections on page 28.
6 Rev 1.2 • 20 Oct 08
2. Introduction
Fuses
Fuses for AC power inputs are located on the PS6000 power supply modules. When an NV6257 is
ordered, fuses appropriate for line voltage in use at the country of destination are installed on the
PS6000 power supply modules. Be sure to check the fuse ratings for compliance with specific
requirements in your area. A 7.5 A fuse is required for 90–130 VAC applications. For 180–250 VAC
operation, a 3.75 A fuse is required. For information on replacing fuses, see Fuse Replacement
page 59.
Cooling
There are four low-speed fans located along the front edge of each PS6000 power supply module.
Each fan pulls a small quantity of air across the internal heat sinks. An additional fan on the
NV6257 frame also provides cooling and is serviceable.
Module Slots and Rear Connections
The NV8256-Plus has slots for input, output, monitor, control and crosspoint cards. Cards are
installed in slots from the front of the router frame. The rear of the router is a solid backplate containing connections for receiving and distributing signals and connecting to system functions, such
as a control system, alarms or references.
Module Slots and Rear Connections
on
Front Slots
Figure 2-2 on page 8 shows the front of the NV8256-Plus with the door removed. From this view,
in the slots that do not have an active card installed (right-hand side), the backside of the backplate
and the motherboard connections are visible. The router features 16 upper bay slots for output cards
and 16 lower bay slots for input cards. In the center of the router are three vertical slots for crosspoint cards. Above the crosspoint card slots is the monitor card slot. Near the bottom of the router
frame are two horizontal slots for the control cards. For more information on each type of card, see
Active Cards
on page 15.
NV8256-Plus Digital Video Router • User’s Guide 7
2. Introduction
From this view, the fan tray at the very top of the router chassis is also visible. For more information on frame cooling, see Cooling
Fan Tray
Monitor
Card Slot
(1)
Output
Cards (8)
Crosspoint
Cards (3)
Module Slots and Rear Connections
on page 4.
Output Card
Slots (8)
1 - 128
Input
Cards (8)
Router Control Cards (2)
Figure 2-2. NV8256-Plus Router with Door Removed (Front View)
Input Card
Slots (8)
8 Rev 1.2 • 20 Oct 08
2. Introduction
Slots and Corresponding Signal Numbers
12
13128
FAN
MONITOR
Module Slots and Rear Connections
Each input card slot and output card
slot, and the card it holds, receives or
distributes signals through 16 BNC
connectors. Each signal is assigned a
number that corresponds to the physical input or output connection. The
numbers correspond to the slot in
which an input card or output card is
installed. This means that input slot 1
corresponds to inputs 1–16, input slot
2 corresponds to inputs 17–32, and so
on, up to 256, as shown in Figure 2-3.
OUTPUTS 116
OUTPUTS 3348
OUTPUTS 1732
INPUTS 3348
INPUTS 1732
INPUTS 116
OUTPUTS 971
OUTPUTS 8196
OUTPUTS 6580
OUTPUTS 4964
12
INPUTS 971
INPUTS 8196
INPUTS 6580
INPUTS 4964
OUTPUTS 1
CROSSPOINT INPUTS 1-256
CROSSPOINT (REDUNDANT)
13128
INPUTS 1
Control Card Primary
Control Card Secondary
OUTPUTS 161-176
OUTPUTS 145-160
OUTPUTS 129-144
CROSSPOINT INPUTS 257-512
INPUTS 161176
INPUTS 145160
INPUTS 129144
OUTPUTS 241-256
OUTPUTS 225-240
OUTPUTS 209-224
OUTPUTS 193-208
OUTPUTS 177-192
INPUTS 241256
INPUTS 225240
INPUTS 209224
INPUTS 193208
INPUTS 177192
Figure 2-3. Inputs and Outputs, Numbers Assigned (Front View)
Output slots are similarly numbered,
such that output slot 1 corresponds to
outputs 1–16, output slot 2 corresponds to outputs 17–32, and so on,
up to 256, as shown in Figure 2-3.
Similarly, the location of an input card
or output card in the router frame
determines the inputs and outputs
managed by that card. For example,
an input card located in slot 1 manages inputs 1–16. An input card
located in input slot 2 manages inputs
17–32, and so on.
If the NV8256-Plus router is used as a standalone router, up to 256 incoming signals can be
received and up to 256 outgoing signals distributed. The crosspoint card installed in the left crosspoint card slot manages inputs 1–256. If two NV8256-Plus routers are connected together, signals
coming into one router can be sent to a second, connected router. This can double the number of
signals managed by the two routers to a maximum of 512 inputs and 512 outputs. The crosspoint
card installed in the right crosspoint card slot manages inputs from the second router: 257–512.
A crosspoint card installed in the middle slot acts as a redundant crosspoint card for fail-over. For
more information on crosspoint cards, see Crosspoint Card Slots and Managed Signals
For information on installing cards in modules slots, see Installing Active Cards
NV8256-Plus Digital Video Router • User’s Guide 9
on page 5.
on page 32.
2. Introduction
Rear Connections
The rear of the NV8256-Plus (Figure 2-4 on page 10) features a backplate containing BNC connections: 256 for receiving signals and 256 for distributing signals. These connections are passive and
pass the signals through to active, receiving connections on the input cards and output cards.
An additional set of four BNC connections, located in the upper, center area of the frame, send signals to the monitor card. In the lower region of the frame are connections for system and power
functions, as shown in Figure 2-5 on page 11. In the center of the frame are connections for expansion cables used to send signals between two connected NV8256-Plus router frames. In Figure 2-4
on page 10, the expansion connections are shown with the cover plates still on.
Fan Exhaust
Monitor
Connectors
Module Slots and Rear Connections
Power Conn. 1
Power Supply
Monitor
Connectors
Expansion
Connectors
Connectors
System
Connectors
Figure 2-4. NV8256-Plus Router (Rear View)
Output
(128)
Input
(128)
Power Conn. 2
Remote Redundant
Crosspoint Control
Output
Connectors
(128)
Input
Connectors
(128)
Ground Lug
System Connections
The NV8256-Plus features connections for managing system functions, located on the rear of the
router. These connections enable you to connect to:
• A router control system using either serial, Ethernet, or GSC Node Bus connectors.
• A stable source of video signal for reference purposes.
• The UniConfig application, installed on a PC, used to perform configuration tasks.
10 Rev 1.2 • 20 Oct 08
2. Introduction
• The system alarm that sends notification of a system failure, such as a fan or power supply mal-
Figure 2-5 shows the system connections. AES3 and Time Code references are not supported at this
time and not discussed in this manual.
Figure 2-5. System and Power Connections for the NV8256Plus (Rear View)
Router Control System Connections
Router control systems are usually run on a separate unit (e.g., PC), which is then connected to the
router. The NV8256-Plus provides three different methods for connecting the router to a router control system: serial, Ethernet or GSC Node Bus. The router control system determines which connection is used. For example, to connect to the NVISION NV9000 control system an Ethernet
connection is preferred.
function.
CTRL 1 CTRL 2 DIAG
CTRL 1 CTRL 2 DIAG
SECONDARY
CONTROL
PRIMARY
CONTROL
AES
REF 1
AES
REF 2
Module Slots and Rear Connections
SEC
PRI
CTRL
10 B 2
10/100 BT
LOOP
THRU
CTRL
10 B 2
10/100 BT
NVISION
AUX BUS
LOOP LOOP LOOP
VIDEO
REF 1
VIDEO
REF 2
ALARMS
TIME
CODE
Serial Control Connections
The NV8256-Plus has four serial ports, as shown in Figure 2-6 on page 11. The ports are divided
into two sets, one primary (‘PRIMARY CONTROL’) and one secondary (‘SECONDARY CONTROL’). Primary control is the connection to the primary control card. Secondary control is the
connection to the secondary (optional for redundancy) control card. Each set is further divided into
connections that correspond to router control systems: ‘CTRL 1’ corresponds to the primary control system and ‘CTRL 2’ corresponds to an alternate control system. Using ‘CTRL 2’ connections,
you can connect to an alternate control system (i.e., backup system) or set up dual control, if
desired. For installation instructions, see Serial Control Connections
on page 38.
Serial control ports implement SMPTE 207M tributary.
Serial Connections to Control System
CTRL 1 CTRL 2 DIAG
CTRL 1 CTRL 2 DIAG
SECONDARY
CONTROL
PRIMARY
CONTROL
AES
REF 1
AES
REF 2
PRI
CTRL
10 B 2
10/100 BT
LOOP
THRU
CTRL
10 B 2
10/100 BT
VIDEO
NVISION
REF 1
AUX BUS
LOOP LOOP LOOP
VIDEO
REF 2
ALARMS
TIME
CODE
SEC
Figure 2-6. Serial Connections to Router Control System (Rear View)
Ethernet Control Connections
The NV8256-Plus has two Ethernet ports, as shown in Figure 2-7. The ports are divided into two
sets, one primary (‘PRI CTRL’) and one secondary (‘SEC CTRL’). Primary control is the connection to the primary control card. Secondary control is the connection to the secondary (optional for
redundancy) control card. Each port connects the local router to the control system. Unlike serial
connections, there are no connections to alternate router control systems because you can connect
NV8256-Plus Digital Video Router • User’s Guide 11
2. Introduction
to alternate control systems using the same Ethernet connection via a network. For installation
instructions, see Ethernet Control Connections
Figure 2-7. Ethernet Connections to Router Control System (Rear View)
GSC Node Bus Control Connections
Some third-party router control systems require a GSC Node Bus connection. The GSC Node Bus
connection is located on the rear of the router, as shown in Figure 2-8. The NV8256-Plus has one
GSC Node Bus connection, labeled ‘NVISION AUX BUS’. The connection is shared by both the
primary and secondary control card. To use the GSC Node Bus connection, an optional module
must be installed on each control card. For details, contact NVISION. For contact information, see
page iii. For installation instructions, see GSC Node Bus Control Connections
Figure 2-8. GSC Node Bus Connections to Router Control System (Rear View)
CTRL 1 CTRL 2 DIAG
CTRL 1 CTRL 2 DIAG
CTRL 1 CTRL 2 DIAG
CTRL 1 CTRL 2 DIAG
SECONDARY
CONTROL
PRIMARY
CONTROL
SECONDARY
CONTROL
PRIMARY
CONTROL
on page 39.
AES
AES
REF 1
REF 2
Ethernet Connections
to Control System
AES
AES
REF 1
REF 2
Module Slots and Rear Connections
SEC
PRI
CTRL
10 B 2
10/100 BT
LOOP
THRU
CTRL
10 B 2
10/100 BT
NVISION
AUX BUS
LOOP LOOP LOOP
VIDEO
REF 1
VIDEO
REF 2
ALARMS
on page 40.
SEC
PRI
CTRL
10 B 2
10/100 BT
LOOP
THRU
CTRL
10 B 2
10/100 BT
NVISION
AUX BUS
LOOP LOOP LOOP
“Node Bus” Connections
to Control System
VIDEO
REF 1
VIDEO
REF 2
ALARMS
TIME
CODE
TIME
CODE
Diagnostic
The diagnostic connections enable the NV8256-Plus to communicate with the UniConfig application. UniConfig runs on a PC separate from the router and is used to perform system setup tasks,
and configure and monitor the router. For information about using UniConfig, see the UniConfig
User’s Guide.
Diagnostic connections connect the router to the PC running the UniConfig application. There are
two types of diagnostic connections: temporary and permanent. A temporary diagnostic serial connection is located on the front of each control card. Permanent diagnostic connections are located
on the rear of the router, labeled ‘DIAG’, as shown in Figure 2-9. There are two permanent ‘DIAG’
ports, one primary (‘PRIMARY CONTROL’) and one secondary (‘SECONDARY CONTROL’).
The primary control connects to the primary control card. The secondary control connects to the
secondary (optional for redundancy) control card.
12 Rev 1.2 • 20 Oct 08
2. Introduction
For instructions on making temporary or permanent diagnostic connections, see Making Diagnostic
Connections on page 42.
Figure 2-9. Permanent Diagnostic Connections (Rear View)
Router Control System Expansion Connections
In order to manage two connected NV8256-Plus routers, router control system expansion connections need to be connected between the routers. Router control expansion system connections are
located on the rear of the router, as shown in Figure 2-10.
When making router control system connections, only one router is connected directly to the router
control system. This router acts as the primary router. When making router control system expansion connections, connections from the remaining router, the secondary router, are made to the pri-
mary router. This enables the router control system to communicate with both routers through the
primary router.
CTRL 1 CTRL 2 DIAG
CTRL 1 CTRL 2 DIAG
Diagnostic
Connections
SECONDARY
CONTROL
PRIMARY
CONTROL
AES
REF 1
AES
REF 2
Module Slots and Rear Connections
SEC
PRI
CTRL
10 B 2
10/100 BT
LOOP
THRU
CTRL
10 B 2
10/100 BT
NVISION
AUX BUS
LOOP LOOP LOOP
VIDEO
REF 1
VIDEO
REF 2
ALARMS
TIME
CODE
For instructions on making control system expansion connections, see Control System Expansion
Connections on page 41.
Expansion Connections
to Control System
CTRL 1 CTRL 2 DIAG
CTRL 1 CTRL 2 DIAG
SECONDARY
CONTROL
PRIMARY
CONTROL
AES
REF 1
AES
REF 2
PRI
CTRL
10 B 2
10/100 BT
LOOP
THRU
CTRL
10 B 2
10/100 BT
VIDEO
NVISION
REF 1
AUX BUS
LOOP LOOP LOOP
VIDEO
REF 2
ALARMS
TIME
CODE
SEC
Figure 2-10. Router Control System Expansion Connections (Rear View)
Video Reference
The NV8256-Plus provides timing reference connections for video signals, labeled ‘VIDEO REF
1’ and ‘VIDEO REF 2’, as shown in Figure 2-11. Located on the rear of the router, these connections provide a reference input for determining the router’s video frame switch point. The video reference connections require a stable source of PAL, NTSC or tri-level sync.
If a video reference is present, signals switch at the defined frame and line switch points. If a video
reference is not present, the router still performs the switch, but to an internal reference. If a video
reference is not connected, the control card displays a lit red LED. (See Indicator LEDs
page 60.) For instructions on making video reference connections, see Making Video Reference
Connections on page 45.
on
Redundant and Dual References
There are two video reference connections. The same reference can be used for both connections or
a different reference for each connection. When using the same, or “redundant,” references for both
NV8256-Plus Digital Video Router • User’s Guide 13
2. Introduction
connections, if one reference fails, the control card fails-over to the redundant reference. When
using different references, or “dual” references, switch takes can occur based on one or the other
reference. For example, ‘VIDEO REF 1’ uses NTSC as a reference and ‘VIDEO REF 2’ uses PAL
as a reference. Using UniConfig, the type of setting is selected: redundant or dual, and if dual,
which outputs reference which video reference on an output by output basis.
Figure 2-11. Connections to Video References (Rear View)
Alarm
The NV8256-Plus provides system alarms that send notification of a malfunction, such as when a
fan or power supply is not functioning properly. Alarms can be connected to indicators that display
visual signals when an alarm is activated. The NV6257 (power supply) and the NV8256-Plus each
have alarm connections that can be connected to external indicator. Creation of an external indicator is outside the scope of this manual. However, basic instructions on wiring the alarm connection
for external monitoring is provided. See Alarm Indicator Equipment
CTRL 1 CTRL 2 DIAG
CTRL 1 CTRL 2 DIAG
SECONDARY
CONTROL
PRIMARY
CONTROL
AES
REF 1
AES
REF 2
Module Slots and Rear Connections
SEC
PRI
CTRL
10 B 2
10/100 BT
LOOP
THRU
CTRL
10 B 2
10/100 BT
NVISION
AUX BUS
LOOP LOOP LOOP
VIDEO
REF 1
VIDEO
REF 2
ALARMS
Video Reference
Connections
on page 49.
TIME
CODE
In addition to an alarm connection, the NV8256-Plus can be connected to a router control system
that receives status information from the router’s control card(s). See Making Router Control Sys-
tem Connections on page 37. The control card reads the status of NV6257’s power supply and fans
through the ‘Power Supply Monitors’ connection. (See Power Supply
on page 6.) In addition, the
control card monitors the router’s power supply, fans, and video reference connections. Both
NV6257 and router information is sent to the control system and is viewable using UniConfig.
A SNMP agent can be installed on the router control system (i.e., NVISION NV9000) to communicate system status information to a SNMP manager. Installation of SNMP agents and use of SNMP
managers is outside the scope of this User’s Guide.
The alarm connection is labeled ‘ALARM’ and is located on the rear of the router, as shown in
Figure 2-12. For instructions on making alarm connections, see Making Alarm Connections
on
page 48.
SEC
CTRL 1 CTRL 2 DIAG
CTRL 1 CTRL 2 DIAG
SECONDARY
CONTROL
PRIMARY
CONTROL
Figure 2-12. Alarm Connection (Rear View)
AES
REF 1
AES
REF 2
PRI
CTRL
10 B 2
10/100 BT
LOOP
THRU
CTRL
10 B 2
10/100 BT
VIDEO
NVISION
REF 1
AUX BUS
LOOP LOOP LOOP
VIDEO
ALARMS
REF 2
System Alarm
Connections
TIME
CODE
14 Rev 1.2 • 20 Oct 08
2. Introduction
Active Cards
The NV8256-Plus features several active cards that manage incoming signals, process commands
from the control system, perform signal switching, and distribute outgoing signals. Each card slides
into a card guide and has a lever that holds the card in place and aids card ejection.
There are:
• 2 control cards – one primary, one secondary (optional for redundancy)
• Up to 16 input cards – SD, SWB, 3Gig signals or analog-to-SD conversion.
• Up to 16 output cards – SD, SWB, 3Gig signals or SD-to-analog conversion.
• Up to 3 crosspoint cards – one primary, one optional for redundancy, and one for expansion.
• 1 monitor card (optional)
Each card and function is described in the following section. For information on installing cards,
see Installing Active Cards
Note All crosspoint cards in this section are referred to by the slot in which the card is
Active Cards
on page 32.
installed—left, middle or right—when facing the front of the router with the door
open.
Control Cards
The router has two control cards (EM0374), one primary and one secondary used for standby
(optional for redundancy). Each card receives commands from the router control system, and in
turn, controls the input, output, crosspoint and monitor cards. Only one control card is active at a
time, with the active card updating the stand-by card.
The control card includes a status reporting circuit. Four LEDs on the front of the control card indicate the card’s status: low battery (Red), alarm (Red), active (Amber) and “healthy” (Green). For
more information, see Indicator LEDs
on page 60.
Input Cards
The router frame can house up to 16 input cards, each processing up to 16 signals. Input cards
receive incoming signals through coaxial connectors or through expansion connectors when two
routers are connected together. There are three categories of input cards: Standard, filler, and analog-to-SD. The standard input card manages incoming signals from the coaxial connections and
from the expansion connections when two routers are connected. The filler input card manages
incoming signals only from the expansion connections when two routers are connected. Both standard and filler input cards can manage SD, SWB or 3Gig signals. Analog-to-SD input cards convert
incoming analog composite video signals to SD. Different categories of input cards can be intermixed in a single frame to meet specific switching configuration needs. For more information on
switching configurations, see Switching Configurations
The following is a list of the different input cards available. Each card is listed by the function it
performs (category)
— standard, filler or analog-to-SD — and the type of signal it manages — SD,
on page 4.
NV8256-Plus Digital Video Router • User’s Guide 15
2. Introduction
SWB, 3Gig or analog. For your convenience, the part number for each card has been included. For
a detailed description of a card’s function, see Input Card Functions
Active Cards
on page 16.
Input Card
Category
Standard SD 259M
Standard SWB 259M
Filler SWB 259M
Standard 3Gig 259M
Filler 3Gig 259M
Analog-to-SD Input: PAL or NTSC analog composite video
Signal Type
Converted to: SMPTE 259M-C, (4:2:2), 270 Mb/s
Standard
(SMPTE)
344M
344M
292M
344M
292M
292M
424M
292M
424M
Rates Part Number
< 546 Mb/s EM0449
≤ 1.5
Gb/s EM0437
≤ 1.5 Gb/s EM0437-50
≤ 3.0 Gb/s EM0619
≤ 3.0 Gb/s EM0619-50
EM0451
Status Reporting
All input cards feature a circuit that performs status reporting and drives the card’s functions. Two
LEDs on the front of the input card indicate the card’s status: alarm (Red), power good (Green).
Three additional LEDs situated further back on the card indicate if software is loaded (Amber), if
there is good communication with the control card (Green) or bad communication with the control
card (Red). For more information, see Indicator LEDs
on page 60.
Input Card Functions
Input cards process up to 16 incoming signals. The functions of each type of card are described in
the following sections. Inputs cards are organized by category
— standard, filler or analog-to-SD.
Standard Input Cards
A standard input card manages either SD (EM0449), SWB (EM0437) or 3Gig (EM0619) incoming
signals from local coaxial connectors and from expansion connectors when two routers are connected together.
Each card receives 16 signals from the local coaxial connectors. Each of the 16 inputs is forwarded
to one of 16 cable equalizers. The equalizers equalize the signal and distribute three copies of the
signal. One copy is sent to a buffer and then the motherboard, which forwards the signal to the crosspoint card in the left slot (inputs 1–256). The second copy is sent to a cable driver and then the
motherboard, which forwards the signal to the expansion connectors. When two routers are connected together, the expansion connectors feed local signals to the second router. The third copy is
sent to a 2×1 MUX which selects a signal to send to the motherboard, which forwards the signal to
the crosspoint card in the middle slot (redundant crosspoint). For more information on each crosspoint card and crosspoint card slot functions, see Crosspoint Cards
If two routers are connected together, the standard input card also receives 16 inputs from the
expansion connections. Each input is forwarded to one of 16 cable receivers, which create two cop-
16 Rev 1.2 • 20 Oct 08
on page 18.
2. Introduction
ies of the signal. One copy is sent to a 2×1 MUX and then a buffer. The buffer forwards the signal
to the motherboard, which sends the signal to the crosspoint card in the middle slot (redundant crosspoint). The other copy is sent to a buffer and then the motherboard, which forwards the signal to
the crosspoint card in the right slot (inputs 257–512).
Figure 2-13 shows the signal flow for a standard input card.
Active Cards
Inputs
from
coaxial
connectors
(16)
Inputs
from
Expansion
Connectors
(16)
Figure 2-13. Standard Input Card Block Diagram
Cable
Equalizer
Cable
Receiver
Buffer
Cable
Driver
2x1
Mux
Buffer
Motherboard
Motherboard
Buffer
Motherboard
Crosspoint
LEFT
Expansion
Connectors
Motherboard
Connector
Crosspoint
RIGHT
Crosspoint
MIDDLE
Standard output cards on the local router and standard output cards on a second connected router
“mirror” each other, performing identical tasks.
Filler Input Cards
A filler input card manages SWB (EM0437-50) or 3Gig (EM0619-50) incoming signals from expansion connectors when two routers are connected together. Filler input cards receive signals only
through the expansion connections and not through the coaxial connections.
The filler input card receives 16 inputs from the expansion connectors. Each input is forwarded to
one of 16 cable receivers, which creates two copies of the signal. Both copies are sent to a buffer
and then the motherboard. The motherboard forwards one copy to the crosspoint card in the middle
slot (redundant crosspoint) and one copy to the crosspoint card in the right slot (inputs 257–512).
Figure 2-14 shows the signal flow for a filler input card.
Inputs
from
Expansion
Connectors
(16)
Figure 2-14. Filler Input Card Block Diagram
Cable
Receiver
Buffer
Motherboard
Connector
Crosspoint
MIDDLE
Crosspoint
RIGHT
Analog-to-SD Input Cards
An analog-to-SD input card (EM0451) converts incoming analog PAL or NTSC composite video
signals to SMPTE 259M-C digital component signals (4:2:2, 270 Mb/s).
NV8256-Plus Digital Video Router • User’s Guide 17
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