Grass Valley NV7512 User Manual
NV7512
Audio Router
User’s Guide
NV7512 Audio Router — User’s Guide
• Revision: 1.3
• Software Version: -none-
• Part Number: UG0002-03
• 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 1.3 • 10 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 — Technical Support: nvsupport@nvision.tv
• E-Mail — Sales: nvsales@nvision.tv
• Website: http://www.nvision.tv
•Mail
NVISION, Inc.
P.O. Box 1658
Nevada City, CA 95959, USA
• Shipping
NVISION, Inc.
125 Crown Point Court
Grass Valley, CA 95945, USA
Note Return Material Authorization (RMA) required for all returns.
NV7512 Audio Router • User’s Guide iii
Change History
The table below lists the changes to the NV7512 Audio Router User’s Guide.
• User’s Guide Part # UG0002-03
• Software version: -none-
Rev # Date ECO # Description Approved By
1.0 15 Nov 06 — Manual created; first version. DEM/Eng
1.1 11 Jan 07 — Revised for uniformity with other router manuals.
Addition of Quad Mix card and backplane, selectable
analog I/O card, revised power connection procedures,
and frame expansion.
1.2 16 Jul 07 — Added new analog cards and Quad Mix control panel;
removed UniConfig material.
1.3 10 Oct 08 14426 Online Help system generated. NV7512 images
regenerated. Corrections regarding analog signals.
Other small corrections.
Restriction on Hazardous Substances (RoHS)
NVISION is in compliance with EU Directive RoHS 2002/95/EC governing the restricted use of
certain hazardous substances and materials in products and in our manufacturing processes.
DEM/Eng
DEM/Eng
DEM/D.Cox
NVISION has a substantial program in place for RoHS compliance that includes significant investment in our manufacturing process, and a migration of NVISION product electronic components
and structural materials to RoHS compliance.
It is our objective at NV to maintain compliance with all relevant environmental and product regulatory requirements. Detailed information on specific products or on the RoHS program at NVISION is available from NVISION Customer Support at
1-800-719-1900 (toll-free) or
1-530-265-1000 (outside the U.S.).
iv Rev 1.3 • 10 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.
NV7512 Audio 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 1.3 • 10 Oct 08
Table of Contents
Chapter 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Redundancy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Signal Types and Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Mixing AES Signal Sample Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Mixing Analog and Digital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Mono Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Switching Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Crosspoint Card Slots and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Minimum Number of Crosspoint Cards and Output Cards . . . . . . . . . . . . . . . . 8
Connecting Multiple Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Module Slots and Rear Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Front Slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Slots and Corresponding Signal Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Analog Signals and Signal Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Rear Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Backplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Quad Mix Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Monitor Backplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Backplane Types and Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
System Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Router Control System Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Diagnostic Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
AES Reference Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Video Reference Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Alarm Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Active Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Control Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Input Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
AES Synchronous (Balanced and Unbalanced). . . . . . . . . . . . . . . . . . . . . . . . 21
MADI (Unbalanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Analog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Status Reporting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
NV7512 Audio Router • User’s Guide vii
Table of Contents
Crosspoint Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Minimum Crosspoint Cards Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Status Reporting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Output Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
AES Synchronous (Balanced and Unbalanced). . . . . . . . . . . . . . . . . . . . . . . . 27
MADI (Unbalanced) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Analog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Quad Mix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Status Reporting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Monitor Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Frame Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
How Frame Expansion Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Chapter 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Preparing for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Rack Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Making Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Power Supply Monitor and Alarms Connections . . . . . . . . . . . . . . . . . . . . . . 35
Power Cords and Branch Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Connecting One NV6257 to One Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Connecting One NV6257 to Two Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Creating a “Y” Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Installing Backplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Installing Active Cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Installing I/O, Control, Crosspoint and Monitor Cards. . . . . . . . . . . . . . . . . . . . . . 42
Installing a Systems Clock Generator (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Making Signal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Local Signal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
AES Synchronous Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
MADI Synchronous Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
MADI Asynchronous Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Analog Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Quad Mix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Signal Expansion Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Making Router Control System Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Local Router Control Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Serial Router Control Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Ethernet Router Control Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
GSC Node Bus Router Control Connections. . . . . . . . . . . . . . . . . . . . . . . . . . 60
Router Control System Expansion Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Making Quad Mix Control Panel Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Making Diagnostic Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Temporarily Connecting to UniConfig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Permanently Connecting to UniConfig. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
viii Rev 1.3 • 10 Oct 08
Table of Contents
Making Reference Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
AES Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
MADI Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Video Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Making Monitor Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Making Alarm Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Alarm Indicator Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
NV6257 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Router Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Verification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Chapter 3 DSP Submodule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Installing the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Configuring the DSP Sub-Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Chapter 4 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Control Card Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Setting Analog Gain, Mute Detection and Operating Levels. . . . . . . . . . . . . . . . . . . . . 87
Gain and Mute Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Operating Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Setting MADI Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Standard and Legacy Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Configuring the Quad Mix Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Chapter 5 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
NVISION’s NV9000 Router Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Third-Party Router Control Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
NVISION’s NV9660 Quad Mix Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Chapter 6 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Periodic Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Fuse Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Indicator LEDs on Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Indicator LEDs on Control Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Indicator LEDs on Input, Crosspoint, and Output Cards . . . . . . . . . . . . . . . . . . . 101
Indicator LEDs on Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Air Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Fan Cleaning and Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Intake Filter Screen Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Replacing Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Active Cards and Power Supply Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Backplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Obtaining Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
NV7512 Audio Router • User’s Guide ix
Table of Contents
Chapter 7 Technical Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Power Specifications (NV6257, PS6000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Physical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Environmental Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Audio Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Video Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Time Code Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Appendix A Part Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Frame Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Backplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Misc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Chapter 8 Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
x Rev 1.3 • 10 Oct 08
1. Introduction
The NV7512 router manages AES,1 MADI and analog audio signal routing. This section discusses
the general features of the router, the power supply, signals supported, a description of all active
cards, and expandablity when using the router connected to other NV7512 routers. It is recommended that you read this section to familiarize yourself with the router before starting any installation tasks.
Overview
The NV7512 Audio Router manages AES, MADI and analog audio signal routing. (See Signal
Types and Rates on page 4.) Each signal type is received and distributed through individual I/O
backplanes, allowing for the implementation of a wide range of audio signal switching configurations. Due to NV7512’s architecture, AES synchronous stereo signals are separated into individual
channels, enabling the switching of mono channels independently within the router. Individual
mono channels can be recombined for distribution as new stereo signals.
The router can operate as a standalone router or interact with up to three additional connected
frames. A single NV7512 can route as few as 8 inputs and 8 outputs (AES synchronous signals at
192kHz) increasing to a maximum of 512 inputs and 512 outputs (AES synchronous signals at
48kHz). Using expansion ports, up to four routers can be connected together for a maximum routing capacity of 2,048 inputs and 2,048 outputs stereo (4,096 inputs and 4,096 outputs mono).
Because of the router’s extreme density, four connected frames take up less space than two industry
standard equipment racks.
In addition to routing several audio signal types, the NV7512 features an optional DSP sub-module
that performs input gain adjustment, phase inversion, crossfade and channel summing.
Mounting
The NV7512 mounts in a standard EIA rack at 14 RUs, 19 inches (482.6 mm) wide, and approximately 19 inches deep. Because of the router’s compact size, two routers can be mounted in a single rack, saving facility space. For installation instructions, see Rack Mount
on page 33.
Fuses
Active cards feature a “fast blow” or resettable fuse. If the card requires a large amount of power,
the fuse is “fast blow” and must be replaced if blown. If the fuses are resettable, the fuses can be
reset by removing the card from the frame. For more information on fuses, see Fuse Replacement
on page 100.
1. AES3-id.
NV7512 Audio Router • User’s Guide 1
1. Introduction
Power Supply
Cooling
The NV7512 frame has three fan trays. The top tray contains three fans; the side and bottom trays
contain two fans each. 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 installed and closed for
proper airflow through the chassis.
Caution If airflow is impeded, overheating may occur.
Each fan features speed control so that the fan spins only fast enough to keep the temperature constant within the router. Temperature sensors on the fans sense the ambient temperature and speed up
or slow down the spinning of the fan as required. By maintaining a constant temperature, circuitry
life span is increased.
Each fan features two LEDs that indicate if the fan is spinning and receiving power. For more information, see Indicator LEDs
The fan trays are located at the top, bottom, and on the right side of the chassis when facing the
front of the router frame. Fan trays are readily accessed through the front of the router frame.
on page 100.
Filters
There are also removable air filters located on the inside of the door assembly. It is recommended
that maintenance of the fan tray and filters be performed on a regular basis. For more information,
see Maintenance
Power Supply
The power supply for the NV7512 is an external separate frame, the NV6257. The NV6257 uses
the NVISION PS6000 series power supply module, housing up to four primary modules and four
optional modules for redundancy. The number of PS6000 modules required depends on how many
routers are being used and the number of active cards installed.
The following lists the number of PS6000 modules required for a router with a full complement of
cards installed:
• One NV7512
• Two NV7512 routers connected together
optional power supply modules).
• Three NV7512 routers connected together
containing four PS6000 power supply modules (and four optional power supply modules) and
the other frame containing two PS6000 power supply modules (and two optional power supply
modules).
on page 99.
— two PS6000 power supply modules (and two optional power supply modules).
— four PS6000 power supply modules (and four
— two NV6257 power supply frames with one frame
• Four NV7512 routers connected together
— two NV6257 power supply frames each containing
four PS6000 power supply modules (and four optional power supply modules).
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.
2 Rev 1.3 • 10 Oct 08
1. Introduction
Power Supply
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 +48
LEDs and output test points located on the front of each PS6000 power supply module. Under normal operation, all five LEDs are lit. For more information, see Module Slots and Rear Connectors
on page 9.
VDC output powers one of the five green
Figure 1-1
90130VAC or
180250VAC In
Figure 1-1. PS6000 Power Supply Module Diagram
shows the power supply architecture.
Power Sense
and Limiting
AC Input, Fuse,
Rectifiers, and Filter
Power Factor
Correction
+48VDC
Regulators (×5)
+48VDC
Out (×5)
Redundancy
The NV6257 can have a maximum of 8 AC power cords connected: up to four primary and four
optional for redundancy, creating a resilient power supply system. Each power cord connected corresponds to an installed PS6000 power supply module. Because there are multiple primary power
cords, if one becomes detached or fails, only power to the corresponding individual PS6000 module is interrupted. If the optional power cords are connected, there is no interruption in power
should a primary power cord fail.
Fuses
Fuses for AC power inputs are located on the PS6000 power supply modules. When a NV6257 is
ordered, fuses appropriate for the 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 7.5A fuse is required for 90-130
operation, a 3.75A fuse is required.
VAC applications. For 180-250 VA C
The fuses are “slow blow” and designed to blow if there is an ongoing power issue, but not if there
is a single, minor spike in the power flow. For information on replacing fuses, see Fuse Replace-
ment on page 100.
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. In addition, the NV6257 has a
single fan that draws air through the power supply chassis. The frame fan is powered by PS6000
power supply modules installed in either slot PS1 or slot PS2 (see Making Power Connections
page 35).
NV7512 Audio Router • User’s Guide 3
on
1. Introduction
Signal Types and Rates
Signal Types and Rates
The NV7512 supports AES, MADI and analog signals. Analog signals are converted to digital with
a sample rate of 48kHz for internal routing. Outgoing digital audio signals can be converted to analog for distribution. In addition, all stereo signals are separated into left and right channels for routing as mono signals. Mono channels can be recombined to create new stereo signals.
The following table lists the sample rates and how many signals at each rate an input card or output
card can support. Each signal type requires a specific input or output card. For a description of each
card and corresponding card part numbers, see Input Cards
page 26.
on page 20 and Output Cards on
Sample Rates
Signal Type
AES synchronous
(balanced and unbalanced)
MADI synchronous streams
(unbalanced)
Analog 48kHz; 25 bits 16 stereo sources
Supported
48
kHz
96kHz
192kHz
kHz
48
96kHz
One Input Card
Supports
32 stereo sources at 48kHz
16 stereo sources at 96kHz
8 stereo sources at 192kHz
2 streams totaling:
64 channels, 24 bits at
48kHz
32 channels, 24 bits at
96kHz
Note: One stream may
contain all 64 or 32
channels.
Converts analog to internal
digital format.
One Output Card
Supports
32 stereo destinations at
kHz, 96kHz or 192kHz
48
(any combination of rates)
2 streams;
2 optional AES reference
outputs, timed to the output
data sampling rate.
Note: Reference not used
for inputs because signals
converted to 48
internal routing.
16 stereo destinations
Converts internal digital
format to analog.
kHz for
For MADI signals, an optional MADI reference can be used for signals arriving at sample rates
other than 48kHz. (See MADI Reference
on page 67.) In addition, a Sample Rate Converter submodule can be installed to support asynchronous signals. (See MADI Asynchronous Sample Rate
Converter Sub-Module on page 23.)
Each signal requires a specific type of connector. Connectors are housed on backplanes installed on
the back plate. For a list of signals and corresponding connector types and backplanes, see Back-
planes on page 12.
Mixing AES Signal Sample Rates
The NV7512 can support three incoming sample rates for AES synchronous signals: 48 kHz,
96kHz or 192kHz. The rate of the signal determines how many signals are supported and through
which connectors the signal may be received.
The router receives a maximum of 32 stereo signals through coaxial connectors housed on I/O
backplanes. (See Backplanes
each. Each of the four sets can have a different sample rate totalling up to 192kHz for all four sets.
The faster the sample rate, the fewer the number of signals the input card can support. Similarly, the
sample rate determines how many and which connectors on the backplane are used to receive the
signals.
4 Rev 1.3 • 10 Oct 08
on page 12.) The 32 signals are divided into four sets of 8 signals
1. Introduction
Signal Types and Rates
Output sample rates will be identical to the input sample rate. For example, if the input sample rate
is 96kHz, the output sample rate will be 96 kHz.
Because unbalanced and balanced signals use different I/O connectors, the connectors used to
receive and distribute signals differ depending on the signal type.
For AES unbalanced signals, the I/O backplane passes signals through 32 individually numbered
connectors, starting at 1 and continuing sequentially up to 32. The sample rate of the signal determines how many signals a single input card supports and which coaxial connectors are used, as follows:
• If the rate is 48kHz, all 32 connectors may be used.
• If the rate is 96kHz, every other connector may be used, starting at 1 and leaving the next disconnected (1, 3, 5, 7, etc.). A total of 16 inputs may be used.
• If the rate is 192kHz, every fourth input may be used, starting at 1 and leaving the next three
disconnected (1, 5, 9, 13, etc.). A total of 8 inputs may be used.
For AES balanced signals, the I/O backplane passes signals through four DB25 connectors numbered 1-8, 9-16, 17-24 and 25-32, respectively.
The following lists the different combinations for different incoming sample rates, and the related
connector numbers used on the I/O backplane:
Sample rate of
incoming signals
for each input.
“X” denotes input
connector not
used.
Input
1, 5, 9, 13, 17,
21, 25, 29
192 X X X
96 X 96 X
96 X 48 48
48 48 96 X
48 48 48 48
Input
2, 6, 10, 14, 18,
22, 26, 30
Input
3, 7, 11, 15, 19,
23, 27, 31
Input
4, 8, 12, 16, 20,
24, 28, 32
Sample rates between connected router frames can be 48kHz, 96kHz or 192 kHz.
Mixing Analog and Digital
The NV7512 frame can mix analog and digital audio signals within a single routing system. For
example, a digital input can be routed to an analog output. Using analog-to-digital and digital-toanalog convertors on the analog input cards and analog output cards, the router converts analog signals to digital or digital to analog. (See Active Cards
lower overall conversion costs when integrating existing analog devices into an existing plant.
on page 20.) This feature can dramatically
NV7512 Audio Router • User’s Guide 5
1. Introduction
Signal Types and Rates
The following is a list of signal types and inter-mix options. In all cases, audio path delay does not
introduce any “lip sync” issues and can safely be ignored.
Input Type Output Type Mix Options Delay
Analog Analog Analog input
Analog Digital Analog input
Digital Analog AES synchronous input
Digital Digital AES synchronous input
< 1.2 mS
and
analog output
~658 µS
or
AES synchronous input
and
AES synchronous output
~539 µS
and
Analog output
104.2 µS
and
AES synchronous output
Mono Channels
The NV7512 routes AES signals internally as mono channels. The router can route individual channels independently or recombine channels to create new stereo signals. To perform switching, an
external AES reference signal must be connected to maintain synchronization.
AES signals are comprised of five parts: a preamble, left channel, channel status bits and right
channel. When received as a stereo signal, the signal is broken apart, separating out the left and
right channels to create two mono channels. The mono channels are then managed as separate signals within the router. The channel status bit and user bits are passed through. When the signal is
distributed as output, the preamble, channel status bit and user bits are added back to the left and
right channels to create a stereo signal.
When routed as a mono signal, individual left or right channels can be combined with other individual channels and distributed as a new channel-pair combination (stereo signal). For example, a
live news report may capture the news reporter’s voice on the left channel and the background
noises on the right channel. By splitting the AES signal into its left channel and right channel, the
news reporter’s voice (left channel) can be paired with a different background noise (right channel).
There must be two channels for the signal to be regenerated as a single stereo output.
How mono signals are recombined and routed to outputs is determined by the router control system.
6 Rev 1.3 • 10 Oct 08
Switching Configurations
The NV7512 is designed to be highly flexible, allowing the creation of a wide variety of configurations for routing incoming and outgoing signals. A single router can route a maximum of 512
inputs and 512 outputs (AES synchronous stereo). By connecting two routers together, the number
of signals managed can be doubled to a maximum of 1,024 inputs and 1,024 outputs, increasing to
2,048 inputs and 2,048 outputs if the maximum of four routers are connected together (AES synchronous stereo). Depending on the signal type and the corresponding input card or output card,
each card supports a minimum of 8 signals (AES synchronous at 192kHz) up to a maximum of 32
signals (AES synchronous at 48kHz). Switching configurations can be created based on 8 up the
maximum number of inputs and outputs allowed: 512 inputs and 512 outputs (1,024 inputs and
1,024 outputs mono).
Crosspoint Card Slots and Outputs
A single NV7512 can have up to four crosspoint cards, 16 input cards, and 16 output cards
installed. Each input card sends incoming signal information to all other crosspoint cards. This
enables each crosspoint card to route any incoming signal from any input card. However, each crosspoint card manages a maximum of four output cards. In other words, a single crosspoint card can
support a maximum of 512 inputs x 128 outputs (AES synchronous). Because a router frame can
house up to 16 output cards, to manage all 16 output cards, four crosspoint cards must be installed.
1. Introduction
Switching Configurations
The router frame has four crosspoint card slots. (See Figure 1-2 on page 8.) The slot in which the
crosspoint card is installed determines which outputs are managed.
Figure 1-2 shows each crosspoint card slot. For clarity, the slots have been labeled A through D.
The crosspoint card installed in each slot manages signals as follows:
•Slot A
•Slot B
•Slot C
— Routes all inputs and local outputs 1–128. Card is installed in the top slot.
— Routes all inputs and local outputs 129–256. Card is installed in the center-top slot.
— Routes all inputs and local outputs 257–384. Card is installed in the center-bottom
slot.
•Slot D
— Routes all inputs and local outputs 385–512. Card is installed in the bottom slot.
Because each crosspoint card forwards signals to four output cards, only those crosspoint cards
routing outputs need to be installed. For example, if output cards for outputs 1–256 are installed,
then crosspoint cards only need to be installed in slots A and B; the C and D slots can remain
empty.
NV7512 Audio Router • User’s Guide 7
1. Introduction
Switching Configurations
Outputs 132
Outputs 33-64
Outputs 65-96
Outputs 97-128
Outputs 129-160
Outputs 161-192
Outputs 193-224
Outputs 225-256
Slot A - Crosspoint (Outputs 1-128)
Slot B - Crosspoint (Outputs 129-256)
Slot C - Crosspoint (Outputs 257-384)
Slot D - Crosspoint (Outputs 385-512)
Fan
Outputs 257-288
Outputs 289-320
Outputs 321-352
Outputs 353-384
Outputs 385-416
Outputs 417-448
Outputs 449-480
Outputs 481-512
Monitor
Control Secondary
Control Primary
Fan
Inputs 132
Inputs 33-64
Inputs 65-96
Inputs 97-128
Inputs 129-160
Inputs 161-192
Inputs 193-224
Inputs 225-256
Inputs 257-288
Inputs 289-320
Inputs 321-352
Inputs 353-384
Inputs 385-416
Inputs 417-448
Inputs 449-480
Inputs 481-512
Fan
Figure 1-2. Crosspoint Card Slot Locations (Front View)
For more information on inputs and outputs and assigned signal numbers, see Slots and Corre-
sponding Signal Numbers on page 10.
Minimum Number of Crosspoint Cards and Output Cards
Because each crosspoint card manages four output cards, the number of crosspoint cards installed,
and where installed, is determined by the number and location of output cards installed. Crosspoint
cards send input information to all other crosspoint cards, so where input cards are installed is not a
factor. Output cards manage outgoing signals. Only the number of cards required to support the signals being distributed need to be installed.
The following table lists possible crosspoint card installation configurations when the NV7512 is
used as a standalone router. The table lists in which slot crosspoint cards and output cards are
installed and the minimum number required (see Figure 1-2 on page 8
type of card, see Active Cards
on page 20. This list is not exhaustive, but shows a sampling of the
wide variety of configurations that can be created. Although the examples list a full complement of
input cards (512 stereo inputs) and output cards for managing the maximum number of signals
listed (32 outputs per card), only the specific number of cards required for the number of inputs
). For a description of each
8 Rev 1.3 • 10 Oct 08
1. Introduction
Module Slots and Rear Connectors
being supported need to be installed. For more information on input and output signal numbers, see
Slots and Corresponding Signal Numbers
on page 10.
Tot al Number
Total Number o f
Inputs x Outputs
512 × 512 1–512 16 4 A, B, C, D
512 × 384 1–384 12 3 A, B, C
512 × 384 129–512 12 3 B, C, D
512 × 384 1–128, 257–512 12 3 A, C, D
512 × 256 1–256 8 2 A, B
512 × 256 129–384 8 2 B, C
512 × 256 257–512 8 2 C, D
512 × 256 1–128, 257–384 8 2 A, C
512 × 128 129–256 4 1 B
512 × 128 385–512 4 1 D
Output Signal
Numbers
of Output
Cards
Total Numbe r
of Crosspoint
Cards
Crosspoint Card
Slot
Connecting Multiple Routers
Each router can have up to four crosspoint cards installed. When two or more routers are connected
together, the crosspoint cards can route all local inputs plus all inputs received through the signal
expansion connections. (See Signal Expansion Connections
nected together, each with 512 inputs, the combined signals routed by the router is 1024 inputs. Up
to four NV7512 routers can be connected together to route a maximum of 2048 inputs and 2048
outputs (AES synchronous stereo). For more information, see Frame Expansion
on page 53.) If two routers are con-
on page 29.
Module Slots and Rear Connectors
The NV7512 has slots for input, output, crosspoint, control and monitor cards. Cards are installed
in slots readily accessed through the front of the router frame. The rear of the router is a back plate
into which backplanes housing coaxial connections for receiving and distributing signals are
installed. The back plate also contains connections to system functions, such as a router control system, alarms or references.
Front Slots
Figure 1-3 on page 10 shows the front of the NV7512 with the door removed. From this view, the
16 upper bay slots for output cards and 16 lower bay slots for input cards are visible. In the center
of the router are four horizontal slots for crosspoint cards. In the right-hand section of the upper bay
are two more slots for the primary and secondary (optional for redundancy) control cards. A slot for
the monitor card is also located in the right-hand section of the upper bay, between the output card
slots and the control card slots. For more information on each type of card, see Active Cards
page 20.
A fan tray is located at the top, bottom, and right side of the router chassis. For more information on
frame cooling, see Cooling
NV7512 Audio Router • User’s Guide 9
on page 2.
on
1. Introduction
Module Slots and Rear Connectors
Figure 1-3 shows where different cards and the fan trays are located in the frame, as viewed from
the front. The monitor card is optional and not shown as installed.
Fan Tray
Output
Cards
(16)
Crosspoint
Cards
(4)
Input
Cards
(16)
Fan Tray
Figure 1-3. NV7512 Router with Cards Installed, Door Removed (Front View)
Control
Cards
(2)
Monitor
Card
Fan Tray
For information on installing cards, see Installing Active Cards on page 42.
Slots and Corresponding Signal Numbers
The router has 16 slots for input cards and 16 slots for output cards. Slots are numbered 1, 2, and so
on, from left to right, when facing the front of the router. Each input card slot and output card slot,
and the card it holds, receives or distributes signals through coaxial connectors housed on a backplane. Each signal is assigned a number that corresponds to the physical input or output connection
up to the maximum number of signals allowed (32). The signal numbers correspond to the slot in
which an input card or output card is installed: Input slot 1 corresponds to inputs 1–32, input slot 2
corresponds to inputs 33-64, and so on, up to 512, as shown in Figure 1-4 on page 11. Output slots
are similarly numbered, such that output slot 1 corresponds to outputs 1–32, output slot 2 corresponds to outputs 33–64, and so on, up to 512, as shown in Figure 1-4 on page 11.
10 Rev 1.3 • 10 Oct 08
Outputs 132
Outputs 33-64
Outputs 65-96
Outputs 97-128
Outputs 129-160
Outputs 161-192
Outputs 193-224
Outputs 225-256
Slot A - Crosspoint (Outputs 1-128)
Slot B - Crosspoint (Outputs 129-256)
Slot C - Crosspoint (Outputs 257-384)
Slot D - Crosspoint (Outputs 385-512)
Fan
Outputs 257-288
Outputs 289-320
Outputs 321-352
Outputs 353-384
Outputs 385-416
Outputs 417-448
Outputs 449-480
Outputs 481-512
Monitor
Module Slots and Rear Connectors
Control Secondary
Control Primary
Fan
1. Introduction
Inputs 132
Inputs 33-64
Inputs 65-96
Inputs 97-128
Inputs 129-160
Inputs 161-192
Inputs 193-224
Inputs 225-256
Inputs 257-288
Inputs 289-320
Inputs 321-352
Inputs 353-384
Inputs 385-416
Inputs 417-448
Inputs 449-480
Inputs 481-512
Fan
Figure 1-4. Inputs and Outputs, Numbers Assigned (Front View)
Analog Signals and Signal Numbers
The router frame slots have printed labels that list signal numbers corresponding to AES synchronous stereo signals, numbers 1 through 32. This numbering scheme does not correspond to analog
signals.
For AES stereo signals, 32 signals can be supported, matching the labeling for signal numbers on
the router frame. For analog signals, only 16 analog stereo signals are supported, so signals do not
match the 32 signal number labels. The stereo signal is received through input 1, then input 3, then
input 5, and so on, up to 32, skipping every other signal label number in sequence. However, 32
mono signals can be received, matching the router label number scheme.
When routing mono and analog signals, it is recommended that a labeling convention be adopted
and rigorously followed for all mono switching configurations.
Rear Connections
The rear of the NV7512 (Figure 1-5 on page 12) features a back plate containing backplanes for
receiving and distributing signals. Each backplane contains passive connectors that pass the signals
through to active, receiving connections on the input cards and output cards.
An additional backplane, located in the left-hand section of the upper bay, contains four BNC connectors for the monitor card. In the left-hand region and lower, left-hand corner of the frame are
NV7512 Audio Router • User’s Guide 11
1. Introduction
Module Slots and Rear Connectors
connections for system and power functions, as shown in Figure 1-7 on page 15. In the lower
region of the frame, near the left-hand side, are expansion connections used to send signals between
connected NV7512 router frames. (See Frame Expansion
Each of the four crosspoint card slots manage up to 128 outputs, or four output cards managing up
to 32 outputs each. For information on crosspoint cards and the signals managed, see Crosspoint
Card Slots and Outputs on page 7.
on page 29.)
System
Connectors
(see
expanded
figure)
Monitor
Connectors
(4)
Figure 1-5
nectors located on the inner motherboard (see Backplanes
shows the rear of the router frame with backplanes installed. Backplanes plug into con-
on page 12). Active cards, shown in
Figure 1-3 on page 10, plug into the same motherboard from the front.
Output Connectors - Backplanes (16)
Expansion
Connectors
(24)
Input Connectors - Backplanes (16)
Figure 1-5. NV7512 Router with MADI and AES Backplanes (Rear View)
Backplanes
The NV7512 features rear backplanes that can be inter-mixed in a single router frame. (See
Figure 1-5.) Each backplane contains connectors for receiving or distributing signals. The number
of connectors on a backplane and the type of connector is determined by the signal type.
12 Rev 1.3 • 10 Oct 08
1. Introduction
Module Slots and Rear Connectors
There are five types of backplanes, each featuring a unique set of connectors, as shown in Figure 1-
6. The type of signal being received or distributed determines the backplane used. For each backplane installed a corresponding input card or output card must also be installed. For example, if a
backplane is installed to receive AES unbalanced signals, then the input card for AES unbalanced
signals must be installed in the corresponding card slot. (See Input Cards
on page 20.)
32 INPUT
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
32 INPUT
AES
AES
AES
32 OUTPUT
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
AES
32 OUTPUT
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
MADI
INPUT
MADI
INPUT
MADI
OUTPUT
IN 1
REF 1 OUT
REF 1
REF 1 IN
IN 2
REF 2
REF 2 OUT
REF 2 IN
MADI
OUTPUT
OUT 1
OUT 2
OUTPUT
MONITOR
OUTPUT
MONITOR
QUAD MIX
OUTPUT
1
2
3
4
10/100BT
1
2
ANALOG
AUDIO
OUT
3
4
QUAD MIX
OUTPUT
AES Coax
(Unbalanced)
AES DB25
(Unbalanced)
Analog Audio
(DB25)
MADI
(BNC)
Output
Monitor
Quad
Mix
Figure 1-6. NV7512 Backplanes
Backplane connectors are labeled with numbers that correspond to the number assigned the signal
passing through the connector. Signal numbers are used when creating switching configurations
(see Switching Configurations
on page 7). For example, on the ‘AES Unbalanced’ backplane, each
connector is labeled ‘1’, ‘2’ and so on up to ‘32’. The signal passing through connector ‘1’ is routed
as signal number 1, the signal passing through connector ‘2’ is routed as signal number 2, and so
on. For a list of all backplane types, connectors and signals managed, see Backplane Types and Sig-
nals on page 14. For information on making connections between backplanes and signal sources or
destinations, see Making Signal Connections
on page 44.
Quad Mix Backplane
Unlike other backplanes, the Quad Mix backplane features three different types of connectors on a
single backplane. Four BNC connectors distribute up to four AES unbalanced audio outputs. A single DB25 connection can distribute up to 8 stereo or 16 mono analog audio outputs. An additional
Ethernet connection provides a connection to the Quad Mix control panel (NV9660). The NV9660
NV7512 Audio Router • User’s Guide 13
1. Introduction
Module Slots and Rear Connectors
manages the signal mixing performed by the Quad Mix card and is required if the Quad Mix backplane and Quad Mix output card are installed. For more information about the Quad Mix card, see
Quad Mix
tion on connecting to the NV9660, see NVISION’s NV9660 Quad Mix Control Panel
Monitor Backplane
The monitor backplane features four BNC connectors that distribute outgoing signals for monitoring purposes. Each BNC connector can be connected to external monitoring equipment so that the
quality of outgoing signals can be verified. The monitor backplane has a corresponding monitor
card and is installed in a unique backplane slot in the back plate. There is no corresponding input
backplane or input card. For more information, see Installing Backplanes
Card on page 29.
Backplane Types and Signals
The following is a list of each backplane type, associated connectors, signal types managed, and the
number of signals each backplane can receive or distribute. For your convenience, the part number
for each backplane is included.
on page 28. There is no corresponding input backplane or input card. For more informa-
on page 98.
on page 41 and Monitor
Connectors
Type of Signals
Managed
AES unbalanced,
synchronous
AES balanced,
synchronous
Analog Analog DB25 4 16 stereo
MADI unbalanced,
synchronous
Note: 2 connectors
support 2 signal
streams; 2
connectors support
optional MADI
references (see
Backplane
Name
AES DIN 1.0/2.3 32 32 stereo
AES DB25 4 16 stereo
MADI BNC 4 64 mono EM0492 EM0493
Connector
Typ e (s)
per
Backplane
Signals
Managed
64 mono
32 mono
32 mono
MADI Reference
on page 67).
AES unbalanced and
Analog
(Ethernet connection
to Quad Mix control
panel, NV9660)
Forwards outgoing
signals to monitor
equipment (see
Quad Mix
(output only)
Monitor BNC 4 1 output from
BNC
Ethernet
DB25
4 BNC
1 Ethernet
1 DB25
AES
balanced:
4 stereo
Analog:
4 stereo or
8 mono
each output
card
Monitor Card on
page 29).
Part
Number
(Input)
EM0486 EM0485
EM0490 EM0491
EM0420 EM0421
N/A EM0512
N/A EM0429
Part
Number
(Output)
14 Rev 1.3 • 10 Oct 08
1. Introduction
Module Slots and Rear Connectors
System Connections
The NV7512 features connections for managing system functions. These connections are used to
connect to:
•A router control system using either
serial, Ethernet or GSC Node Bus connectors.
•A stable source of audio signal for reference purposes.
•The UniConfig application, installed
on a configuration PC.
•A system alarm that sends notification
of a system failure, such as a fan malfunction.
AES
REF1
PRI CTRL
CTRL 1
CTRL 2
DIAG
SEC CTRL
CTRL 1
CTRL 2
DIAG
AES
REF2
Serial Connections
to Control System
Diagnostic
Connections
AES
Reference
PRI CTRL
10 B 2
10/100 B T
VIDEO
REF 1
LOOP
THRU
ALARMS
VIDEO
(2)
SEC CTRL
10/100 B T
NODE
BUS
REF 2
TIME CODE
10 B 2
LOOP
THRU
Expansion
Connections for
Control System
Ethernet
Connections
to Control
System
GSC Node Bus
Connection
to Control System
Video Ref
Connections
System Alarm
Connection
Time Code
Reference
(Not supported
at this time)
•A power supply alarm that sends notification of a power supply failure.
Figure 1-7 shows the system connections
located on the rear of the router. Time
Code references are not supported at this
time.
Each system connection and function is
described in the proceeding sections.
Figure 1-7. System Connections for the NV7512 (Rear View)
NV7512 Audio Router • User’s Guide 15
1. Introduction
Module Slots and Rear Connectors
Router Control System Connections
A router control system is used to manage routing configurations in the router. The router control
system sends instructions to the router control card, which in turn sends commands directing signal
switching in the router. A router control system is a separate external unit, which is connected to the
router. The NV7512 provides three types of a router control system connections: serial, Ethernet or
GSC Node Bus. The router control system determines which connection is used. For example, to
connect to the NVISION NV9000 router control system an Ethernet connection is preferred.
Serial Connections
The NV7512 has four serial router control system connections, as shown in Figure 1-8. The connections are divided into two sets, one primary (‘PRI CTRL’) and one secondary (‘SEC CTRL’).
Primary control connects to the primary control card. Secondary control connects to the secondary
(optional for redundancy) control card. (See Control Cards
into connections that correspond to router control systems: ‘CTRL 1’ corresponds to the primary
control system and ‘CTRL 2’ corresponds to a redundant 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 Router Control Connections
PRI CTRL
on page 20.) Each set is further divided
on page 58.
SEC CTRL
CTRL 1
CTRL 2
DIAG
Figure 1-8. Serial Connections to Router Control System (Rear View)
CTRL 1
CTRL 2
DIAG
Serial Connections
to Control System
Ethernet Connections
The NV7512 has two Ethernet router control system connections, labeled ‘10/100 BASET’, as
shown in Figure 1-9. Both connections are shared by the primary control card and the secondary
control card. (See Control Cards
on page 20.) Because Ethernet network connections can be used to
connect to alternate control systems, there are no separate connections provided. For installation
instructions, see Ethernet Router Control Connections
on page 59.
In order for the router to communicate with the router control system through an Ethernet connection, an IP address for the router needs to be set in the control card. The IP address is set using UniConfig. For more information, see the UniConfig User’s Guide.
COMMON
TO
PRI & SEC
10 BASE 2
10/100 BASE T
Figure 1-9. Ethernet Connections to Router Control System (Rear View)
10 BASE 2
10/100 BASE T
Ethernet
Connections
to Control
System
16 Rev 1.3 • 10 Oct 08
1. Introduction
Module Slots and Rear Connectors
GSC Node Bus Connections
Some third-party router control systems require a GSC Node Bus connection. The NV7512 has one
GSC Node Bus connection, labeled ‘NODE BUS’, as shown in Figure 1-10. The connection is
shared by both the primary control card and the secondary control card. (See Control Cards
page 20.) To use the GSC Node Bus connection, an optional module must be installed on each control card being used. For details, contact NVISION. For installation instructions, see GSC Node
Bus Router Control Connections on page 60.
on
NODE
BUS
Figure 1-10. GSC Node Bus Connections to Router Control System (Rear View)
LOOP
THRU
GSC Node Bus
Connection
to Control System
Router Control System Expansion Connections
In order to manage multiple connected NV7512 routers, the router control system expansion connections need to be connected between the routers. Control system expansion connections are
located on the rear of the router, labeled ‘10 BASE 2’, as shown in Figure 1-11.
When making router control system connections, only one router is directly connected to the router
control system. This router acts as the primary router. When connecting two or more routers, each
router’s control system expansion connection is connected to the next router in line, ending with the
primary router. For example, if connecting four routers, Router 4 is connected to Router 3, which is
connected to Router 2, and Router 2 is connected to Router 1. Router 1 is the primary router and
connected directly to the router control system. This enables the router control system to communicate with all connected routers through the primary router’s control system connection. For instructions on making control system expansion connections, see Router Control System Expansion
Connections on page 61.
COMMON
TO
10 BASE 2
PRI & SEC
10 BASE 2
Expansion
Connections for
Control System
10/100 BASE T
Figure 1-11. Expansion Control System Connections (Rear View)
10/100 BASE T
Diagnostic Connections
The diagnostic connections enable the NV7512 to communicate with the UniConfig application.
UniConfig runs on external hardware (e.g., PC) separate from the router and is used to perform system setup tasks, and configure and monitor the router. For more information on UniConfig, see the
UniConfig User’s Guide.
There are two types of diagnostic connections: temporary and permanent. A temporary diagnostic
serial connection is located on the front of each control card. (See Control Cards
manent diagnostic connections are located on the rear of the router, labeled ‘DIAG’, as shown in
Figure 1-12 on page 18. NVISION recommends using the temporary diagnostic connection when
configuring the router because the port has fixed communications parameters. The permanent diagnostic connections are used for upgrading firmware or control card protocols when there is no
Ethernet connection to the router. For instructions on making temporary or permanent diagnostic
connections, see Making Diagnostic Connections
NV7512 Audio Router • User’s Guide 17
on page 64.
on page 20.) Per-
1. Introduction
Module Slots and Rear Connectors
There are two permanent ‘DIAG’ ports, one primary (‘PRI CTRL’) and one secondary (‘SEC
CTRL’). The primary control connects to the primary control card. The secondary control connects
to the secondary (optional for redundancy) control card.
PRI CTRL
SEC CTRL
CTRL 1
CTRL 2
DIAG
Figure 1-12. Permanent Diagnostic Connections (Rear View)
CTRL 1
CTRL 2
DIAG
Diagnostic
Connections
AES Reference Connections
The AES reference is used for clock generation. The clock provides a timing reference for AES
synchronous signals and for the control card’s timing circuits. For optimum audio output, signals
must be clock-locked to the same reference. Input impedance is selected by setting jumpers on the
control card. (See Control Card Jumper Settings
The NV7512 has two AES reference connections labeled ‘AES REF1’ and ‘AES REF2’, as shown
in Figure 1-13 on page 18. Both connections are shared by the primary control card and the secondary control card. (See Control Cards
on page 20.) The AES reference connections are “redundant”
and use the same reference type. When both reference connections are connected, if one reference
fails, the control card automatically fails-over to the redundant reference.
Synchronous AES input cards can work with inputs that are not locked to a common AES reference. These inputs are treated as non-synchronous AES signals. Although possible, it is not recommended that you operate under these settings for high-quality program audio feeds. Router
specifications are not guaranteed; the audible effects may be unpredictable, depending on the program content and the degree of offset in the incoming data rate.
on page 85.)
An AES reference is required when using synchronous AES output cards. (See AES Reference
Connections on page 18.) While it is possible to let the clock generator on the control card free-run,
the synchronous AES outputs may contain ticks and pops, the severity of which depends on the difference in clock rate.
The AES reference connection requires a stable signal source of AES with a sample rate of 48kHz.
For instructions on making AES reference connections, see AES Reference
AES
REF1
Figure 1-13. Connections to AES References (Rear View)
AES
REF 2
AES
Reference
on page 67.
Video Reference Connections
The NV7512 provides timing reference connections for video signals, labeled ‘VIDEO REF 1’ and
‘VIDEO REF 2’, as shown in Figure 1-14. These connections provide a reference input for determining the router’s video frame switch point. The same reference can be used for both connections
or a different reference used for each connection.
18 Rev 1.3 • 10 Oct 08
1. Introduction
Module Slots and Rear Connectors
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 switches the signal, but to an internal reference. When the
video reference is not connected the control card red LEDs remain lit. (See Indicator LEDs
page 100.)
The video reference connections require a stable source of PAL, NTSC or Tri-level sync. For
instructions on making video reference connections, see Video Reference
on page 69.
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
connections, if one reference fails, the control card automatically fails-over to the redundant reference. When using different references, or “dual” references, routing switch takes can be configured
to 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.
“Redundant” or “dual” mode is selected using UniConfig. If “dual” is selected, each output can be
configured individually to use ‘VIDEO REF 1’ or ‘VIDEO REF 2’ as the reference (see the UniConfig User’s Guide).
on
VIDEO
REF 1
Figure 1-14. Connections to Video References (Rear View)
LOOP
THRU
VIDEO
REF 2
Video Ref
Connections
Alarm Connections
The NV7512 provides system alarms that notify you of a malfunction, such as when a fan or power
supply is not functioning properly. The NV6257 (power supply) and the NV7512 each have alarm
connections that can be connected to external equipment that display visual signals when an alarm
is activated. Creation of external monitoring equipment is outside the scope of this manual. However, basic instructions on wiring the alarm connections for external monitoring is provided. See
Alarm Indicator Equipment
In addition to an alarm connection, the router control system receives status information from the
router’s control card(s). The control cards read the status of NV6257’s power supply and fans
through the ‘Power Supply Monitors’ connection. (See Module Slots and Rear Connectors
page 9.) At the same time, the control card monitors the local router’s power supply, fans, and
video reference connections. Both NV6257 and router information is then communicated to the
router control system and is viewable using UniConfig (see the UniConfig User’s Guide).
on page 72.
on
A SNMP agent can be installed on the router control system (i.e., NVISION 9000) to communicate
power supply information to a SNMP manager. Installation of SNMP agents and use of SNMP
managers is outside the scope of this User’s Guide.
NV7512 Audio Router • User’s Guide 19
1. Introduction
Active Cards
The router alarm connection is labeled ‘ALARM’, as shown in Figure 1-15. For instructions on
making alarm connections, see Making Alarm Connections
Figure 1-15. Alarms Connection (Rear View)
Active Cards
The NV7512 features several active cards that manage incoming signals, forward commands from
the router control system, perform signal switching, and distribute outgoing signals. Each card
slides into a card guide and has a two levers that aid card ejection.
There are:
• 2 control cards (one primary, one secondary - optional for redundancy)
• Up to 16 input cards
• Up to 16 output cards
• Up to 4 crosspoint cards
• 1 monitor card (optional)
Each card and function is described in the proceeding sections. For information on installing cards,
see Installing Active Cards
ALARMS
System Alarm
Connection
on page 71.
on page 42.
Control Cards
The router has two control cards (EM0374), one primary and one secondary (optional for redundancy). A control card receives commands from the router control system, and in turn, controls the
input, output, crosspoint and monitor cards.
Both the primary control card and the secondary control card receive router control system commands, but only the primary control card actively sends commands to the crosspoint cards. Because
both cards receive router control system commands, if the active (primary) control card fails, the
back-up (secondary) control card automatically and seamlessly takes over processing. In addition,
the primary control card and secondary control card communicate with each other. Should either
control card fail, the now active control card communicates the failure to the router control system.
The control card also monitors taxometers on the fans, which indicate if the fan is spinning or not.
The control card forwards this information to the router control system for monitoring.
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 operating normally
(Green). For more information, see Indicator LEDs
on page 100.
Input Cards
The router frame can house up to 16 input cards, each processing up to 32 signals, depending on the
card. Input cards receive incoming signals through passive coaxial connectors on backplanes. (See
Backplanes
on page 12.) There are three types of input cards managing different signal formats.
20 Rev 1.3 • 10 Oct 08
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