Imagine Communications VSX-11 3G Sync Change Over Unit Installation and Operation Manual
The VSX-11-3G Multi-Format Sync Change Over Unit automatically or manually selects between primary and secondary reference sources. The VSX-11-3G monitors up to a maximum of eleven channels. Each channel contains a primary input, a backup input, and an output. The VSX-11-3G outputs the primary or backup signal as long as the signal is the correct amplitude, as determined by DIP-switch settings. The VSX-11-3G offers a user-friendly interface via its front panel controls and indicators. The unit allows for easy access to configure the DIP-switch settings. The VSX-11-3G facilitates remote control and status monitoring through GPI functionality.
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Installation and Operation Manual
VSX-11-3G
Multi-Format Sync Change Over Unit
September 2012
Revision: B
P061-0033
Delivering the Moment
Publication Information
© 2014 Imagine Communications Corp. Proprietary and Confidential.
Imagine Communications considers this document and its contents to be proprietary and confidential.
Except for making a reasonable number of copies for your own internal use, you may not reproduce this publication, or any part thereof, in any form, by any method, for any purpose, or in any language other than English without the written consent of Imagine Communications. All others uses are illegal.
This publication is designed to assist in the use of the product as it exists on the date of publication of this manual, and may not reflect the product at the current time or an unknown time in the future. This publication does not in any way warrant description accuracy or guarantee the use for the product to which it refers.
Imagine Communications reserves the right, without notice to make such changes in equipment, design, specifications, components, or documentation as progress may warrant to improve the performance of the product.
Trademarks
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All other trademarks and trade names are the property of their respective companies.
Contact Information
Imagine Communications has office locations around the world. For locations and contact information see:
http://www.imaginecommunications.com/contact us/
Support Contact Information
For support contact information see:
▪ Support Contacts:
http://www.imaginecommunications.com/services/technical support/
▪ eCustomer Portal:
http://support.imaginecommunications.com
VSX-11-3G
Multi-Format Sync Change Over
Unit
Installation and Operation Manual
Revision B
September 2012
Contents
Preface
......................................................................................................................... 1
Waste from Electrical and Electronic Equipment (WEEE) Directive ............................... 5
Chapter 1 Introduction
.............................................................................................................. 7
Chapter 2 Installation
............................................................................................................... 9
Chapter 3 Operation
................................................................................................................. 17
User Defined Switch Positions and Threshold Adjustments .................................... 19
Copyright © 2012, Harris Corporation iii
iv
Contents
Chapter 4 Troubleshooting
.................................................................................................... 27
Chapter 5 Specifications
......................................................................................................... 29
Appendix A Service Support
Appendix B Pinouts
Appendix C Glossary
Index
........................................................................................................................... 49
Copyright © 2012, Harris Corporation
Preface
Manual Information
Purpose
This manual provides information about Multi-Format Sync Change Over Unit.
Audience
This manual is written for engineers and software developers who are responsible for third party control of the VSG-11-3G Multi-Format Sync Change Over Unit.
Revision
History
Table P-1. Revision History of Manual
Edition
A
B
Date
July 2012
Revision History
Initial release
September 2012 Correction to output return loss specification
Writing
Conventions
This manual adheres to the following writing conventions.
Table P-2. Writing Conventions
Term or Convention
Bold
Italics
CAPS
Code
>
Description
Indicates dialog box, property sheet, field, button, check box, list box, combo box, menu, submenu, window, list, and selection names
Indicates email addresses, names of books and publications, and first instances of new terms and specialized words that need emphasis
Indicates a specific key on the keyboard, such as ENTER, TAB,
CTRL, ALT, DELETE
Indicates variables or command-line entries, such as a DOS entry or something you type into a field.
Indicates the direction of navigation through a hierarchy of menus and windows.
Copyright © 2012, Harris Corporation
1
2
Preface
Table P-2. Writing Conventions (Continued)
Term or Convention
hyperlink
Internet address
Note:
Description
Indicates a jump to another location within the electronic document or elsewhere
Indicates a jump to a Web site or URL
Indicates important information that helps to avoid and troubleshoot problems
Obtaining
Documents
Product support documents can be viewed or downloaded from our website. Alternatively, contact your Customer Service representative to request a document.
Operator’s Safety Summary
WARNING: These instructions are for use by qualified personnel only. To reduce the risk of electric shock, do not perform this installation or any servicing unless you are qualified to do so. Refer all servicing to qualified service personnel.
Important Safety Instructions
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade (or the third prong) is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
Only use attachments/accessories specified by the manufacturer.
Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/ apparatus combination to avoid injury from tip-over.
Copyright © 2012, Harris Corporation
VSG-11-3G
Installation and Operation Manual
3
Figure P-1 Portable Cart Warning
Unplug this apparatus during lightning storms or when unused for long periods of time.
Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
The device's IEC power connector shall remain readily accessible.
Ensuring Safety
If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.
The unit should not be exposed to dripping or splashing, and no objects filled with liquids, such as vases, shall be placed on the unit.
When the unit is to be permanently cabled, connect the protective ground conductor before making any other connections.
Operate built in units only when they are properly fitted into the system.
For permanently cabled units without built in fuses, automatic switches, or similar protective facilities, the AC supply line must be fitted with fuses rated to the units.
Before switching on the unit, ensure that the operating voltage set at the unit matches the line voltage, if appropriate. If a different operating voltage is to be set, use a fuse with the appropriate rating. Refer to the Installation Instructions.
Units of Protection Class I with an AC supply cable and plug that can be disconnected must be operated only from a power socket with protective ground contact:
Do not use an extension cable–it can render the protective ground connection ineffective.
Do not intentionally interrupt the protective ground conductor.
Do not break the protective ground conductor inside or outside the unit or loosen the protective ground connection; such actions can cause the unit to become electrically hazardous.
Finland - The equipment must be connected to an earthed mains socket-outlet. Laite on liitettävä suojakoskettimilla varustettuun pistorasiaan.
Norway - The equipment must be connected to an earthed mains socket-outlet.
Apparatet må tilkoples jordet stikkontakt.
Sweden - The equipment must be connected to an earthed mains socket-outlet.
Apparaten skall anslutas till jordat uttag.
Before opening the unit, isolate it from the AC supply. Then, ensure that
Copyright © 2012, Harris Corporation
4
Preface
Adjustments, part replacements, maintenance, and repairs are carried out by qualified personnel only.
Safety regulations and rules are observed to prevent accidents.
Only original parts are used to replace parts relevant to safety (for example, the power on/off switches, power transformers, and fuses).
Replaceable fuses can be hazardous when live. Before replacing a fuse, disconnect the
AC power source.
Harris does not recommend internal battery replacement by the user.
CAUTION: Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type.
Use caution when cleaning the equipment; isopropyl alcohol or similar solvents can damage or remove the labels.
Observe any additional safety instructions specified in this manual.
Explanation of Symbols
These symbols may appear on Harris equipment:
Figure P-2 Safety Symbols Appearing on Harris Equipment
This product manual uses the following safety terms and symbols to identify certain conditions or practices.
Table P-3 Safety Terms and Symbols Appearing in the Product Manual
Symbol Description
WARNING: Identifies conditions or practices that can result in personal injury or loss of life — high voltage is present. Uninsulated dangerous voltage within the product’s enclosure may be sufficient to constitute a risk of electric shock to persons.
CAUTION: Identifies conditions or practices that can result in damage to the equipment or other property. Important operating and maintenance (servicing) instructions are included in the literature accompanying the product.
Copyright © 2012, Harris Corporation
VSG-11-3G
Installation and Operation Manual
5
Certification Labels and Symbol Locations
On Harris equipment, certification labels and symbols are located on the back panel, rear chassis sides, or bottom rear of the chassis. On smaller space-restricted units, most labels and symbols can be found on the bottom rear of the chassis.
Directives and Compliances
This section provides information concerning Harris Corporation compliance with EU
Directive 2002/95/EC and EU Directive 2002/96/EC.
Restriction on Hazardous Substances (RoHS) Directive
Directive 2002 / 95 / EC — commonly known as the European Union (EU) Restriction on
Hazardous Substances (RoHS) — sets limits on the use of certain substances found in electrical and electronic equipment. The intent of this legislation is to reduce the amount of hazardous chemicals that may leach out of landfill sites or otherwise contaminate the environment during end-of-life recycling. The Directive, which took effect on July 1, 2006, refers to the following hazardous substances:
Lead (Pb)
Mercury (Hg)
Cadmium (Cd)
Hexavalent Chromium (Cr-V1)
Polybrominated Biphenyls (PBB)
Polybrominated Diphenyl Ethers (PBDE)
In accordance with this EU Directive, products sold in the European Union will be fully
RoHS-compliant and “lead-free.” Spare parts supplied for the repair and upgrade of equipment sold before July 1, 2006 are exempt from the legislation. Equipment that complies with the EU directive will be marked with a RoHS-compliant symbol, as shown in
Figure P-3
.
Figure P-3 RoHS Compliance Symbol
Waste from Electrical and Electronic Equipment (WEEE) Directive
The European Union (EU) Directive 2002 / 96 / EC on Waste from Electrical and Electronic
Equipment (WEEE) deals with the collection, treatment, recovery, and recycling of electrical and electronic waste products. The objective of the WEEE Directive is to assign the responsibility for the disposal of associated hazardous waste to either the producers or users of these products. As of August 13, 2005, producers or users are required to recycle electrical and electronic equipment at end of its useful life, and must not dispose of the equipment in landfills or by using other unapproved methods. (Some EU member states may have different deadlines.)
Copyright © 2012, Harris Corporation
6
Preface
In accordance with this EU Directive, companies selling electric or electronic devices in the
EU will affix labels indicating that such products must be properly recycled. Contact your local Sales representative for information on returning these products for recycling.
Equipment that complies with the EU directive will be marked with a WEEE-compliant symbol, as shown in
Figure P-4
.
Figure P-4 WEEE Compliance Symbol
Copyright © 2012, Harris Corporation
1
Introduction
Overview
The VSX-11-3G Multi-Format Sync Change Over Unit automatically or manually selects between primary and secondary reference sources. The VSX-11-3G monitors up to a maximum of eleven channels. Each channel contains a primary input, a backup input, and an output. The VSX-11-3G outputs the primary or backup signal as long as the signal is the correct amplitude, as determined by DIP-switch settings. Fault detection occurs when the input signal is between 2 dB and 5 dB lower than a nominal level for serial digital video signals and tri-level sync, and between 2 dB and 4 dB down from nominal for all other pre-set signal types. There are two user selectable settings. When any signal fails to meet the criteria established by the DIP switch settings, all outputs changeover from the faulted input to the non-faulted signal.
Features
Features of the VSX-11-3G include:
Eleven channel connections, each containing 1 primary input, 1 secondary input, and 1 output
Channels 1 through 11 for monitoring multiple signal types
Automatic and manual switching between primary and secondary inputs
Front panel lock
Individual channel status displayed for both the primary and backup reference sources
Simple access to the DIP-switch configuration
GPI functionality
Front panel
Back panel
Figure 1-1 VSX-11-3G Front and Back Panels
Copyright © 2012, Harris Corporation
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8
Chapter 1
Introduction
Copyright © 2012, Harris Corporation
2
Installation
Overview
This section provides information about inspecting and installing the VSX-11-3G.
Inspecting the Shipment
Before installing the VSX-11-3G, inspect the box and the contents. Report any damage to the shipper, and telephone the Harris Customer Service Department for service and support
(see
Note: Refer to the enclosed packing sheet for the latest list of items that are supplied with the unit.
The box contains the following:
One VSX-11-3G Multi-Format Sync Change Over Unit
The VSX-11-3G Installation and Operation Manual
Hardware kit, Item Number 045592, for rack mounting the VSX-11-3G
Rack mount installation instructions
Two power supplies sent with power cords
Save the box and packing material for any future shipping requirements.
Qualified Power Supply Specifications
The VSX-11-3G may only be used with the power supplies provided by Harris or a UL Listed
Limited Power Supply (LPS)..
Table 2-1 Harris approved power supplies for VSX-11-3G
Harris part #
P827-0004
PSU-12-1
Description
Power supply
Optional Power supply and AC cord kit
on page 32 for the power supply specifications.
Copyright © 2012, Harris Corporation
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10
Chapter 2
Installation
Rack Mounting the VSX-11-3G
Note: Before installing the rack mount kit, it is recommended to configure the DIP switches beneath the access panel (see
panel location and configuration).
When selecting the permanent mounting location for the VSX-11-3G, ensure that the flow of air to the ventilation holes on the top and sides of the chassis is not obstructed. Rack
mounting the VSX-11-3G is illustrated in
, and the parts required to rack mount
the VSX-11-3G are listed in
.
Figure 2-1 Rack Mounting the VSX-11-3G
Table 2-2 Parts Required to Rack Mount the VSX-11-3G
2
3
Key
1
4
Item Number
831030
831019
832076
831060
Quantity Description
8
4
2
4
Hardware screw #10-32 x ¾ pan head
Hardware nylon washer
Metal rack extension bracket
Hardware knut #10-32
Mount the rack-extension brackets to the back of the rack cabinet following the provided instructions. Once in place, guides on the unit will slide in and out of the rack extensions for easy installation, removal, and access panel utilization.
Connecting the VSX-11-3G
The back panel connectors are illustrated in
. The function of each connector is
described in
.
Copyright © 2012, Harris Corporation
1
VSX-11-3G
Installation and Operation Manual
11
Note: BNC connectors are tightly spaced on the back panel. A BNC cable tool (for example, the Trompeter RT 1L) should be used to install and remove the cables.
5
6
2 3
4
Figure 2-2 VSX-11-3G Back Panel Connectors
Table 2-3 Description of Back Panel Connectors
Key
1
2
3
4
5
6
Item
CHANNEL (1 to 11) Indicates the channel that contains a group of BNCs: one Primary BNC, one
PRIMARY
OUTPUT
BACKUP
GPI
POWER
Description
Output BNC, and one Backup BNC. There are a total of 11 channels.
BNC connector for primary input from the primary signal generator. The input can be PAL or NTSC black burst, tri-level sync, AES/EBU audio, SD SDI,
HD-SDI, or 3G. Other signal types can be detected and used to switch inputs using the user-settable thresholds.
BNC connector for output of the primary or backup input signal depending upon the conditions set in the VSX-11-3G.
BNC connector for backup input from the backup signal generator. The backup signal type must be the same as the primary signal type.
9 pin D sub, female connector for GPI*
2 dual redundant 12V external power supplies
*See
Connect two signal generators (i.e. two VSG-401s or two VSG-4MTGs) to the VSX-11-3G.
Connect one generator as the primary signal generator. Connect the other generator as the backup signal generator. Both inputs must be the same signal format for each channel.
shows an example of configuring the VSX-11-3G with two VSG-401 signal
shows an example of configuring the VSX-11-3G with two
VSG-4MTG signal generators.
Note: The cable length from the signal generator(s) to the back of the VSX-11-3G should
not exceed 1.5 feet. Set the DIP switch settings accordingly, as described in DIP-Switch
Configurations on page 2-6.
Copyright © 2012, Harris Corporation
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Chapter 2
Installation
Connect the primary and secondary signal generator to two separate power sources. Upon power loss, the VSX-11-3G routes the primary signal to the output connection. For this reason, power the backup and VSX-11-3G with the same power source. Power the primary signal generator with a separate power source if another power source is available. Doing this will prevent signal loss unless both signal generators lose power.
Figure 2-3 Connecting two VSG-401s to the VSX-11-3G
The VSG-401 outputs can be set as follows:
[SDI A, SDI B] : SD-SDI, HD-SDI, or 3G-SDI
[SYNC OUT] : NTSC_BB, PAL_BB, or TRI-LEVEL (set to follow SDI outputs: SD,HD, or 3G)
[AES 1] : AES
[AES 2/DARS/WC] : AES
Copyright © 2012, Harris Corporation
VSX-11-3G
Installation and Operation Manual
13
Figure 2-4 Connecting two VSG-4MTGs to the VSX-11-3G
The VSG-4MTG outputs can be set as follows:
[SYNC x]: NTSC_BB,PAL_BB, or TRI-LEVEL where x = 1,2,3,4, or 5.
[DARS/WC]: AES
DIP-Switch Configurations
Beneath the access panel, shown in
, are twelve eight-position DIP switches
(SW1 to SW12). Eleven of the DIP switches are used to configure the eleven channels (one
DIP switch per channel). The twelfth DIP switch is used for system configuration. The label, shown in
, which can be found beneath the access panel, indicates each switch
function.
Copyright © 2012, Harris Corporation
14
Chapter 2
Installation
Figure 2-5 Access Panel and DIP Switch Locations
Figure 2-6 Switch Function Label
To access and utilize DIP switches SW1 to SW12:
1
Using a Phillips screwdriver, loosen and remove the four screws surrounding the access panel.
2
Remove the access panel.
3
Adjust DIP switches SW1 to SW12.
4
Reattach the access panel.
5
Attach the four screws.
Copyright © 2012, Harris Corporation
VSX-11-3G
Installation and Operation Manual
15
SW1 to SW11 are the internal channel configuration switches. SW1 sets CH 1, SW 2 sets
CH 2 . . . and SW11 sets CH11. These switches select the amplitude comparison level for each channel. Each comparison level corresponds to a different signal format. These threshold levels are set so that fault detection occurs when the input signal is between 2 dB and 5 dB lower than nominal for serial digital video and tri-level sync, and between 2 dB and 4 dB lower than nominal for all other pre-set signal types. Only one position from each
DIP switch should be enabled (set to ON).
describes the function of each position
for SW1 through SW11.
Table 2-4 Switch Position Selections for SW1 through SW11
5
6
3
4
7
8
1
2
Switch Position
All Off
Selection
Disabled (signal not checked)*
NTSC Blackburst/PAL Blackburst/Tri-level Sync-HD
Serial digital video (SD-SDI) (270 Mb/s)
Serial digital video (HD-SDI) (1.485 Gb/s)
Serial digital video (3G-SDI) (2.97 Gb/s)
AES/EBU audio
User defined #6 (adjustable)
User defined #7 (adjustable)
Tri-level Sync-3G
Note: When all switch positions are off, there will be no channel status LED indication for that channel.
The twelfth switch, the configuration switch, uses switches 1 through 3, and 8. The
remaining switches 4 through 7 are reserved for future use.
functions.
Table 2-5 Switch Position Selections for the Configuration Switch (SW12)
Switch Position
1
2
3
4 through 7
8
Selection
Manual Override (allows manual switching to a faulted input signal)
Audible alarm disable
GPI disable
Reserved
Power up disable
POSITION 1 of the configuration switch can be set to Normal or Override relay operation.
For normal operation, the VSX-11-3G will not switch to a generator with a faulty signal.
When one of the two generators functions properly, the functioning generator is routed to the output. If both generators contain good or faulty signals simultaneously, manual switching can occur. For example, if the VSX-11-3G Configuration switch is set to NORMAL mode, and the backup generator has a faulty signal, then the VSX-11-3G will not switch to the backup generator.
In Manual Override mode, the signal can always be manually switched. The default position of SW12 position 1 is normal.
Copyright © 2012, Harris Corporation
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Chapter 2
Installation
POSITION 2 of the configuration switch defines the action of the audible alert. Audible
Alert Disable has ON and OFF positions. If the switch is set to the ON position, the audible alert will not sound under any condition. The default position is OFF. If the Audible Alert
Disable is set to OFF, the audible alert will sound whenever a fault occurs in either the
Primary or Backup sync signals. For more information, see
POSITION 3 (Remote) of the configuration switch enables and disables GPI control. The
OFF position enables all control via GPI inputs. The ON position disables GPI control and GPI status indications remain operative. The default position is OFF.
POSITION 8 of the configuration switch disables the Power up delay. For more information on the power up delay, see
Copyright © 2012, Harris Corporation
3
Operation
Front Panel Controls and Indicators
The front panel controls and indicators are illustrated in
. Each control and indicator function is described in
.
2
3
4
5
6
1
Figure 3-1 VSX-11-3G Front Panel Controls and Indicators
Table 3-1 Description of Front Panel Controls and Indicators
Key
1
2
Item
POWER LED
PANEL LOCK
Description
When illuminated, the Power LED indicates that power is active in the
VSX-11-3G.
Press to toggle the front panel LOCK and UNLOCK LEDs.
When the LOCK LED is illuminated, the front panel buttons (except the PANEL
LOCK button) are disabled. The VSX-11-3G automatically locks the front panel after one minute of inactivity. This is used to prevent accidental switching.
When the UNLOCK LED is illuminated, the front panel buttons are enabled.
The VSX-11-3G can be controlled from the front panel.
NOTE: The front panel must always be unlocked before the front panel buttons can be utilized. If GPI operation is enabled, the GPI selections will not require pressing the PANEL LOCK button.
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Chapter 3
Operation
Table 3-1 Description of Front Panel Controls and Indicators (Continued)
Key
3
4
5
6
Item
AUTO SWITCH
SYNC SOURCE*
RESET
CHANNEL STATUS
Description
Press to toggle between AUTO and MANUAL modes.
When the AUTO LED is illuminated, the VSX-11-3G automatically switches to the secondary sources when an error in one primary signal occurs. The
VSX-11-3G will not switch to the primary sources until the RESET button is pressed.
When the MANUAL LED is illuminated, the VSX-11-3G will not automatically switch to the other sources. Switch the output to the primary or secondary sources by pressing the SYNC SOURCE button.
Press to toggle between the Primary and Backup sources when in MANUAL mode.
When the PRIMARY LED is illuminated, the primary sources are output from the VSX-11-3G.
When the BACK UP LED is illuminated, the secondary sources are output from the VSX-11-3G.
NOTE: When faults are detected in one source, and SW12 position 1 is set to
OFF, manual switching to the faulty generator will not occur.
Press the RESET button to clear the error indications and return the output signal to the primary source if there is no fault in the signal.
Press the RESET button to control the alert tone. This acknowledges the
existing alarms. For more information, see
Indicates the status for both the primary and backup sources of each channel.
When an error occurs, the LED changes from green to red. The LEDs are off when the input is not being checked (the Dip Switch SW1 to SW11 is OFF).
Powering the VSX-11-3G
Note: The Power up delay can be disabled by setting SW12 position 8 to ON.
Supply power to the VSX-11-3G by connecting the power to the same power source as the backup signal generator. The other end of the power cable is connected to the back of the
VSX-11-3G. When power is applied to the unit, the POWER LED will illuminate. During the start-up sequence, the LOCK, UNLOCK, AUTO, and PRIMARY LEDs are illuminated. Also, the MANUAL LED from the Auto switch group slowly blinks to indicate a disabled front panel. The Channel Status LEDs are off.
Copyright © 2012, Harris Corporation
VSX-11-3G
Installation and Operation Manual
19
Internal Channel Configuration Switches
Eleven of the DIP switches are used to configure the eleven channels (one DIP switch per channel). Switches SW1 through SW11 select the signal type that is monitored on a channel by setting the amplitude comparison level. Only one position per switch (channel) should be enabled. The default settings of the channel configuration switches SW1 through SW11 are
Table 3-2 Factory-Default Channel Configuration Switch Positions
8
9
10
11
6
7
4
5
2
3
Output # Switch
1 SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
SW9
SW10
SW11
Position
1
1
1
1
1
1
2
3
4
5
5
Type of Signal Attached
NTSC BB or PAL BB or TRI-LEVEL-HD
NTSC BB or PAL BB or TRI-LEVEL-HD
NTSC BB or PAL BB or TRI-LEVEL-HD
NTSC BB or PAL BB or TRI-LEVEL-HD
NTSC BB or PAL BB or TRI-LEVEL-HD
NTSC BB or PAL BB or TRI-LEVEL-HD
Serial digital video (SD-SDI) (270 Mb/s)
Serial digital video (HD-SDI) (1.485 Gb/s)
Serial digital video (3G-SDI) (2.97 Gb/s)
AES/EBU
AES/EBU
User Defined Switch Positions and Threshold Adjustments
The User-defined switch positions (position 6 and 7) are used to trigger levels other than the predefined levels. The User-defined switch threshold levels are adjusted by turning the screw on USER 6 and USER 7 potentiometer, as shown in
. Turn the screw until the appropriate channel LED in the CHANNEL STATUS LED group changes from green to red.
If all dip-switch position are set to OFF for a channel, the front panel status light for that channel will not illuminate. However, the channel will still switch when a fault is detected in an active channel.
Figure 3-2 User 6 and User 7 Potentiometer Threshold Adjustments
Copyright © 2012, Harris Corporation
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Chapter 3
Operation
An example of how to set the appropriate threshold for signal levels other than the predefined levels is indicated below:
Note: This example shows how to set the threshold for DIP switch SW1 through SW11 position 6 by adjusting potentiometer USER 6. The same example can be used to set the threshold for DIP switch SW1 through SW11 position 7 by adjusting potentiometer USER 7.
1
Obtain a signal source that outputs two signals of the same type, format, and level. Also, obtain a variable attenuator capable of attenuating one of the supplied signals by 0 dB and
3 dB.
Note: If different levels of attenuation are necessary, use an attenuator that is capable of attenuating the necessary signals. Two examples of instruments that can provide signals are the VSG-401 and the VSG-4MTG, as shown in
2
Connect one signal source directly to the CH 1 BACKUP input of the VSX-11-3G.
3
Connect the other signal source to the variable attenuator input.
4
Connect the output signal from the Attenuator to the CH 1 PRIMARY input of the
VSX-11-3G.
Remember that the signals from the primary and backup signal sources must be the same format.
5
Set all switches on DIP switch SW2 to SW11 to the OFF position.
6
Set SW1 position 6 to ON. All other switch positions should be OFF.
7
Set SW12 position 2 to ON. Move all other SW12 positions to OFF.
8
Unlock the front panel by pressing the PANEL LOCK button. Press the AUTO SWITCH button until the Manual LED is illuminated.
9
Press the SYNC SOURCE button until the Primary LED is illuminated.
The Primary source is output from the VSX-11-3G.
10
Press the AUTO SWITCH button until the AUTO LED is illuminated.
11
Fully turn the USER 6 potentiometer counter-clockwise until reaching stop (the trimpot clicks). This will guarantee that the input signal does not fault.
12
Unlock the front panel. Press the RESET button.
Verify that the CH 1 Primary and Backup LEDs are both green. If both LEDs are not green, the signal cannot be used to detect faults.
13
Set the attenuator to 3 dB or the desired level of attenuation.
Verify that the CH 1 Primary and Backup LEDs are green. If both LEDs are not green, the signal cannot be used to detect faults at this level of attenuation.
14
Slowly rotate the potentiometer USER 6 clockwise until the CH 1 Primary status LED turns red and the VSX-11-3G switches to the backup signal.
15
Unlock the front panel and press the RESET button to verify that the error still occurs.
If the CH 1 Primary status LED turns green, the VSX-11-3G switches back to the Primary input. Return to step 14 and repeat until the CH 1 Primary status LED remains red.
If the LED remains red, the threshold level for USER 6 has been successfully set. SW1 through SW11 position 6 have been defined by the USER 6 potentiometer threshold setting.
16
Set SW12 position 2 to OFF.
Copyright © 2012, Harris Corporation
VSX-11-3G
Installation and Operation Manual
21
Manual and Automatic Switch Conditions
is used to determine the action of the automatic and manual switch in all
conditions. All relay switching occurs simultaneously. Pressing the SYNC SOURCE button changes all channels from the PRIMARY to BACKUP source, or the BACKUP to the PRIMARY source, depending upon the NORMAL/OVERRIDE SW12 switch selection. The key for
Table 3-3 Normal/Override Switching Chart
POWER
ON
ON
ON
ON
ON
ON
ON
ON
OFF
DIP SWITCH
USER CONFIG
(SW12
Position 1)
N
N
N
N
O
O
O
O
X
SIGNALS
PRIMARY
0
0
1
1
0
0
1
1
X
AUTO SWITCH
BACKUP AUTO MANUAL
0
1
0
1
0
1
0
1
X
LG
B
P
LG
LG
B
P
LG
P
S
S
S
S
P
S
NS
NS
S
ON - Power is applied
OFF - Power is lost or not applied
N - Switch SW12 position 1 is set to Normal mode (OFF)
O - Switch SW12 position 1 is set to Override mode (ON)
X - N/A
0 - Primary or backup signal is in error
1 - Primary or backup signal is good
AUTO - The AUTO SWITCH (switch on error) button is set to AUTO. It can either output the Primary or Backup.
MANUAL - The AUTO SWITCH (no switch on error) button is set to MANUAL. It can either output the Primary or Backup.
LG - Last good: the switch remains on the last good input.
B - Backup reference source is the output
P - Primary reference source is the output
S - Switch (change the current output signal) when the SYNC SOURCE button is pressed.
NS - No switch when the SYNC SOURCE button is pressed.
Copyright © 2012, Harris Corporation
22
Chapter 3
Operation
Audible
Alert
SW12 position 2 is used to enable or disable the audible alert feature of the VSX-11-3G. In the OFF position, the audible alert will begin when a fault occurs in any primary or backup input signal. The alert continues until the RESET button is pressed. In a quiet environment, the audible alert can be clearly heard. There is no adjustable volume to the audible alert.
The methods to disable the alert tone are:
Physically remove the VSX-11-3G from the rack and access DIP switch SW12 position 2 from beneath the access panel. Set SW12 position 2 to ON.
Press the RESET button for less than three seconds to access a five-minute period of silence. During the five-minute silent period, the following conditions apply:
The audible alert will sound again in five minutes if the existing faults, present when the RESET button was pressed, still exist and have not cleared.
If a channel faults during the five minute timeout period, which had not faulted when the RESET button was pressed, the audible alert will sound immediately.
Press and hold the RESET button for more than three seconds to clear the audible alert.
The audible alert will not sound until:
The current fault has cleared and a new fault is detected in the same channel
A fault that was not present when the RESET button was pressed occurs
LED Indications
LEDs are on the front panel for Power, Panel Lock, Auto Switch, Sync Source, and Channel
Status. The LED indications are described in
Table 3-4
.
Table 3-4 Front Panel LED Indications
LED
Green Power LED
Red Lock LED
(Panel Lock)
Green Unlock LED
(Panel Lock)
Green Auto LED
(Auto Switch)
Green Manual LED
(Auto Switch)
Green Sync Source
Primary LED (Sync Source)
Green Sync Source
Backup LED (Sync Source)
22 Green/Red Channel
Fault LEDs (Channel Status)
LED Indications
LED off: No power to VSX-11-3G
LED on (illuminates green): Power being supplied to the
VSX-11-3G
LED off: front panel unlocked
LED on (illuminates red): front panel locked
LED off: front panel locked
LED on (illuminates green): front panel unlocked
LED off: VSX-11-3G in manual mode
LED on (illuminates green): VSX-11-3G in automatic mode
LED off: VSX-11-3G in automatic mode
LED on (illuminates green): VSX-11-3G in manual mode
LED off: Backup inputs selected
LED on (illuminates green): Primary inputs selected
LED off: Primary inputs selected
LED on (illuminates green): Backup inputs selected
LED off: Channel not checked (DIP switch OFF)
LED on (illuminates green): Channel checked and OK
LED on (illuminates red): Channel faulted
Copyright © 2012, Harris Corporation
VSX-11-3G
Installation and Operation Manual
23
GPI
Operation
The VSX-11-3G can be controlled remotely via a GPI back panel connector.
shows the GPI connector pinouts, and
describes the pinouts.
Figure 3-3 GPI Connector Pinouts
Table 3-5 Pinouts for the GPI 9-pin, Female, D-sub Connector
4
5
6
7*
2
3
Pin Number
1
Signal
Auto switching (Input)
Toggle sync source (Input)
Indicate primary sync source active (Output)
Indicate backup sync source active (Output)
Fault alarm (Output)
Fault reset (Input)
Fault reporting (Normally Open)
8*
9
Fault reporting (Normally Open)
Ground
* Pins 7 and 8 are two contacts of one relay switch, which is normally open with the relay in the energized state. A power failure or a fault condition will cause the contacts to close.
The pin numbers are described below:
Pin 1 - When auto switching is low, the automatic switching mode is disabled. The front panel cannot override this setting. This input should be tied to ground (low) or floating (high).
Pin 2 - Toggle Sync Source is the same as the front panel Sync Source button. Low pulses cause the VSX-11-3G to toggle between the Primary and Backup output signal.
This input should be tied to ground (low) or floating (high).
Pin 3 - Configure this pin so when the high level occurs, the Primary signals are the sync source. This output is used to light an external LED. The output is short-circuit protected (this pin could be shorted to ground or +24 VDC without damage to the
VSX-11-3G).
shows a circuit for output pins 3, 4, and 5 including an
example of an external resistor and LED (R is selected for the desired current flow through the LED).
Pin 4 - Configure this pin so when a high level occurs, the Backup signals are the sync source. This output is used to light an external LED. The output is short circuit protected
(this pin could be shorted to ground or +24 VDC without damage to the VSX-11-3G).
shows a circuit for output pins 3, 4, and 5 including an example of an external resistor and LED (R is selected for the desired current flow through the LED).
Pin 5 - Configure this pin so that when a high level occurs, it indicates that a Primary or
Backup input signal is in error. The alarm signal is latched and remains high as long as the error occurs. The alarm signal is unlatched once the error is resolved and the RESET button is pressed. This output is used to light an external LED. The output is short circuit protected (this pin could be shorted to ground or +24 VDC without damage to the
Copyright © 2012, Harris Corporation
24
Chapter 3
Operation
shows a circuit for output pins 3, 4, and 5 including an
example of an external resistor and LED (R is selected for the desired current flow through the LED).
Figure 3-4 Sample Circuit for Pins 3, 4, and 5
Pin 6 - The Fault Reset pin functions like the front panel RESET button. A low pulse clears all signal errors only after the error has been resolved. This input should be tied to ground (low) or floating (high).
Pin 7 and Pin 8 - A General Purpose interface functions according to a polarity setting
(NORMALLY OPEN, NORMALLY CLOSED). Pins 7 and 8 function as a GPI that reports faults in the signals. The fault reporting system follows the SMPTE 269M guidelines except that there is no pulsing and the interface is pins 7 and 8 on the GPI connector instead of a BNC connector. The connection is usually open. The GPI connection closes during loss of power to the VSX-11-3G, during the VSX-11-3G power-up delay, and when a signal is in error. When the GPI closes due to a signal error, it remains closed until the error in the signal is resolved and the RESET button is pressed. In the closed state, the maximum voltage drop across the closure cannot exceed 2V at 20 mA. When the GPI is open, the leakage is less than 100 µA from 0 to 5 VDC, and it can handle a maximum of 24 VDC without being damaged. The sensing device should not supply more than 20 MA of current to the reporting device.
required to conform to the SMPTE 269M guidelines.
Figure 3-5 Wiring Required to Conform with SMPTE Fault Reporting Standard 269M
Calibration Interval
Calibration is recommended under any of the following conditions:
Every 12 months
After replacement of critical components
Copyright © 2012, Harris Corporation
VSX-11-3G
Installation and Operation Manual
25
After exposing unit to temperatures outside of the unit's specified operating or storage temperature ranges
Copyright © 2012, Harris Corporation
26
Chapter 3
Operation
Copyright © 2012, Harris Corporation
4
Troubleshooting
Overview
If the VSX-11-3G does not operate properly, first verify that:
The VSX-11-3G is connected to a power source
All cables are correctly connected to the unit (see
All switches SW1 through SW12 are set to their proper positions. See
Problems, Symptoms, Causes, and Solutions
summarizes troubleshooting procedures to follow if the VSX-11-3G is not
functioning properly.
Table 4-1 VSX-11-3G: Problems, Symptoms, Causes, and Solutions
Problem/Symptom
Loss of primary signal or no primary signal detected
Loss of backup signal or backup signal not detected
No power from the
VSX-11-3G
Possible Cause
Connection to the BNC is loose or not connected
Solution or Explanation
Verify cable is firmly connected to the back panel of the VSX-11-3G and the signal source
Replace the cable
Check the signal source Source not sending signal to the
VSX-11-3G
RESET button not pressed when primary signal is not in error
Connection to the BNC is loose or not connected
Press the RESET button
Verify cable is firmly connected to the back panel of the VSX-11-3G and the signal source
Replace the cable
Source not sending signal to the
VSX-11-3G
Power Loss
Check the signal source
Primary source is output from VSX-11-3G during power Loss
Power source not supplying power Change the power source. During power loss, the primary source is the output for each channel of the VSX-11-3G
Copyright © 2012, Harris Corporation
27
28
Chapter 4
Troubleshooting
Table 4-1 VSX-11-3G: Problems, Symptoms, Causes, and Solutions (Continued)
Problem/Symptom Possible Cause
Unit will not switch when the SYNC SOURCE button is pressed
Panel Lock activated
Auto switch is set to AUTO
One signal is faulted
Solution or Explanation
Press the PANEL LOCK button
Press the AUTO SWITCH button to set manual mode
Cannot switch to a faulted input in normal mode
If the problem persists after troubleshooting the VSX-11-3G, see
Copyright © 2012, Harris Corporation
5
Specifications
Note: Specifications are subject to change without notice.
Primary/Backup Inputs
Table 5-1 Primary/Backup Input Specifications
Item
Connector
Return loss (of selected inputs)
Insertion loss
Maximum switched voltage
Maximum switched current
Crosstalk (unselected input to output, or channel to channel)
Relay switch time
Signal-loss to Switch-over delay
Specification
75
BNC connector
30 dB for 100 kHz to 10 MHz
15 dB for 10 to 270 MHz
10 dB for 270 MHz to 1.5 GHz
< 0.3 dB for 5 to 270 MHz
< 1.6 dB for 10 MHz to 1.5 GHz
< 5.0 dB for 10 MHz to 3.0 GHz
The insertion loss for the VSX-11-3G from 270
MHz to 3 GHz characterizes that of <15 meters of
Belden 1694A cable length.
+/-5V
100 mA
60 dB to 10 MHz
30 dB to 1.0 GHz
20 dB to 1.5 GHz
15 dB to 3.0 GHz
10 mS
< 1.5 seconds
Copyright © 2012, Harris Corporation
29
30
Chapter 5
Specifications
Power Up Delay
Table 5-2 Power Up Delay Specifications
Item
Delay time
During power-up
Specification
4 minutes
Default state is held
Channels are not monitored (status indicators are off)
The panel is locked. Both lock and unlock indicators are on.
Manual mode indicator blinks
Reference Detection
Table 5-3 Reference Detection Specifications
Item
Number
Type of detected reference signals
Specification
9 reference signals detected
NTSC analog Blackburst (2 to 4 dB down from nominal)
PAL analog Blackburst (2 to 4 dB down from nominal)
ITU-601 270 Mb/s serial digital component video (2 to 5 dB down from nominal)
Tri-level Sync (SMPTE 274 and 296) (2 to 5 dB down from nominal)
AES/EBU (SMPTE 276M) (2 to 4 dB down from nominal)
HD-SDI 1.485 Gb/s (SMPTE 292M) (2 to 5 dB down from nominal)
3G-SDI 2.97 Gb/s (SMPTE 424M) (2 to 5 dB down from nominal)
Copyright © 2012, Harris Corporation
Output
Table 5-4 Output Specifications
Item
Connector
Return loss
Specification
75
BNC connector
30 dB for 100kHz to 10 MHz
15 dB for 10 to 270 MHz
10 dB 270 MHz to 1.5 GHz
VSX-11-3G
Document Type Variable
31
LEDs
Table 5-5 LEDs
Item
Green Power LED
Red Lock LED
Green Unlock LED
Specification
LED off: No power to VSX-11-3G
LED on (illuminates green): Power being supplied to the
VSX-11-3G
LED off: front panel unlocked
LED on (illuminates red): front panel locked
LED off: front panel locked
LED on (illuminates green): front panel unlocked
Green Manual LED
Green Auto LED
LED off: VSX-11-3G in automatic mode
LED on (illuminates green): VSX-11-3G in manual mode
LED off: VSX-11-3G in manual mode
LED on (illuminates green): VSX-11-3G in automatic mode
Green Sync Source Primary LED LED off: Backup inputs selected
LED on (illuminates green): Primary inputs selected
Green Sync Source Backup LED LED off: Primary inputs selected
LED on (illuminates green): Backup inputs selected
22 Green/Red Channel Fault
LEDs
LED off: Channel not checked
LED on (illuminates green): Channel checked and OK
LED on (illuminates red): Channel faulted
Copyright © 2012, Harris Corporation
32
Chapter 5
Specifications
Front Panel Buttons
Table 5-6 Front Panel Buttons
Item
Panel Lock
Auto Switch
Sync Source
Reset
Specification
Unlocks and Locks front panel
Toggles between Auto Switch and Manual mode
Manually switches between Primary and Backup sources
Resets fault condition if fault is cleared
Silences audible alarm for five minutes when pressed for less than three seconds
Silences audible alarm until a new fault is detected when pressed for more than three seconds
GPI
Table 5-7 GPI Specifications
Item
Connector
Input
Output Current
Specification
9-pin, female, d-sub connector
Tied to ground (low) or floating (high)
26 mA max (see
Power Requirements
Table 5-8 Power Requirement Specifications
Item
Power connector
Power Input, UL Listed
Limited Power Supply (LPS)
Power consumption
Power loss behavior
Specification
2 barrel connectors with screw lock. 1 or both power sources can be active at a time and they must not feed each other
12 VDC nominal 10.8 VDC minimum, 13.2 VDC maximum less than 35 W nominal
VSX-11-3G will switch all outputs to the Primary inputs when power is lost
Copyright © 2012, Harris Corporation
VSX-11-3G
Document Type Variable
33
Mechanical
Table 5-9 Mechanical Specifications
Item
Dimensions
Specification
Height: 1.75 (4.5 cm)
Width: 19.00 (48.3 cm)
Depth: 11.82 (30 cm)
Weight: 5.45 lbs (2.46 kg)
Environmental
Table 5-10 Environmental Specifications
Item
Operating temperature
Storage temperature
Humidity
Altitude
Transportation
Pollution degree
Specification
+32° to 122°F (0 to 50°C)
-40° to +149° (-40° to +65°C) non-operating temperature
90% maximum (non-condensing)
Operating: 6562 ft (2000 m)
24.00 in. (60.96 cm) impact drop survivable in original factory packaging
Pollution degree 2
Accessories
Table 5-11 Accessories
Item
Standard accessories
Specification
VSX-11-3G Installation and Operation
Handbook
Rackmount kit
Unit has two power cords and two power supplies provided
Copyright © 2012, Harris Corporation
34
Chapter 5
Specifications
Copyright © 2012, Harris Corporation
A
Service Support
For service support, telephone the Harris Customer Service Department at 1-888-534-8246.
If the problem cannot be resolved over the telephone and the instrument must be shipped to Customer Service for service or repair:
Obtain a Return Authorization (RA) number from the Harris Customer Service
Department.
Attach a tag to the unit with:
Your company name, address, and telephone number
The name of the contact person at your company
The RA number
The unit serial number
An explanation of the problem
To prevent shipping damage, pack the unit the same way Harris had packed it. If possible, use the original packing materials in the original shipping container.
Ship the unit to:
Harris Corporation
(Address to be provided by Harris Customer Service Department)
Attn: RA xxxx (where xxxx is the RA number)
Email: [email protected]
35
Copyright © 2012, Harris Corporation
36
Appendix A
Service Support
Copyright © 2012, Harris Corporation
B
Pinouts
Figure B-1 GPI 9-pin D-sub, Female Connector
5
6
7*
8*
9
Table B-1 Pinouts for the GPI 9-pin D-Sub, Female Connector
2
3
Pin Number
1
4
Signal
Auto switching (Input)
Toggle sync source (Input)
Indicate primary sync source active
(Output)
Indicate backup sync source active
(Output)
Fault alarm (Output)
Fault reset (Input)
Fault reporting (Normally Open)
Fault reporting (Normally Open)
Ground
*NOTE: Pins 7 and 8 are two contacts of one relay switch, which is normally open with the relay in the energized state. A power failure or a fault condition will cause the contacts to close.
37
Copyright © 2012, Harris Corporation
38
Appendix B
Pinouts
Copyright © 2012, Harris Corporation
C
Glossary
H3 Tag for Term. Text definition.
601: An international standard (ITU-R BT.601) for component digital television. It defines the sampling systems, matrix values, and filter characteristics for digital television.
8VSB: Vestigial sideband modulation with 8 discrete amplitude levels.
16 VSB: Vestigial sideband modulation with 16 discrete amplitude levels.
Advanced Television Systems Committee (ATSC): The parent organization that developed, tested, and described the form and function of the US digital television formats.
AES/EBU: A digital audio standard established jointly by the Audio Engineering Society
(AES) and the European Broadcasting Union (EBU).
AGC: Automatic gain control.
Artifacts: Unwanted visible effects in the picture created by disturbances in the transmission or image processing, such as edge crawl or "hanging dots" in analog pictures or "pixelation" in digital pictures.
Aspect Ratio: The ratio of horizontal to vertical dimensions. A square has an aspect of 1:1 since the horizontal and vertical measurements are always equal. Current television screen aspect ratios are 4:3 and 16:9.
Asynchronous Serial Interface (ASI): A transmission method adopted by the DVB, and called DVB-ASI. The transmission method allows for the transport of varying data payloads in a constant data stream. The DVB-ASI transport stream rate is 270 Mb/s.
Audio Breakaway: Routing video and accompanying audio in separate signal paths.
Audio-Follow: Routing video and accompanying audio together in the same signal path.
Auto Trans: Automatic transition. The execution of a single wipe or fade from current picture to another picture by way of an automatic device.
Bandwidth: The range of frequencies used to transmit information such as picture and sound.
Baseband Video: An unmodulated video signal.
Black: Also color black, blackburst. A composite color video signal that has the composite sync, reference burst, and a black video signal.
Copyright © 2012, Harris Corporation
39
40
Appendix C
Glossary
Blanking Processor: A circuit that removes sync, burst and blanking from the program video and then replaces it with sync, burst and blanking from the reference input. The process ensures constant sync and burst levels on program video.
BNC: Bayonet Neill Concelman.
Border: An electronically-generated picture member that is used in wipes to separate the two video sources used in the wipe. It is of even thickness and has color produced by the matte generator.
Broadcast Legal: Encoding video signal parameters to conform to prescribed limits for broadcast. Encoding rules vary by NTSC, PAL, country, and broadcast facility.
BTSC: Broadcast Television Standards Committee. A US standard for stereo audio encoding in NTSC broadcast television.
CAV: Component Analog Video.
Chrominance: The color portion of a video signal that represents the saturation and hue.
Black, gray and white have no chrominance; color signals have both chrominance and luminance.
Chrominance/Luminance Delay (C/L Delay): A measurement that indicates the amount to which chrominance and luminance are aligned with respect to each other. A low C/L delay figure can minimize the effects of ghosts or color offset on the received picture.
Clipping: The electronic process of shearing off the peaks of either the white or black excursions of a video signal for limiting purposes. Clipping often is performed prior to modulation to limit the signal.
CMRR: Common Mode Rejection Ratio.
Color Burst: The portion of a color video signal that contains a short sample of the color subcarrier. Used as a color synchronization signal to establish a reference for the color information following it; used by a color monitor to decode the color portion of a video signal. The color burst acts as both amplitude and phase reference for color hue and intensity. The color oscillator of a color television receiver is phase locked to the color burst.
Composite Sync: A signal consisting of horizontal sync pulses, vertical sync pulses and equalizing pulses only.
Composite Video: A single video signal that includes all color video and timing information. A composite signal includes luminance, chrominance, blanking pulses, sync pulses, and color burst information.
Crosspoint: An electronic switch, usually controlled by a button on the panel. Control logic allows for only one crosspoint, for each bus, to be switched "ON" at a time.
D/A: Conversion of digital to analog signals.
DA: Distribution Amplifier.
Data Element: An item of data as represented before encoding and after decoding.
dB: See decibel.
Decoded Stream: The decoded reconstruction of a compressed bit stream.
Copyright © 2012, Harris Corporation
VSX-11-3G
Installation and Operation Manual
41
Decibel (dB): A logarithmic measure of the ratio between two powers, voltages, currents, sound intensities, etc. Signal-to-noise ratios are expressed in decibels.
Default: A factory preset value or condition.
Demodulator: A receiver, such as for television broadcast, cable, and closed circuit applications. A TV demodulator receives and processes of f-air or cable RF signals and provides baseband video and audio outputs.
Differential Gain: A measurement that specifies how much the chrominance gain is affected by the luminance level. Expressed as a percentage showing the largest amplitude change between any two levels, it indicates how much color saturation variance occurs when the luminance level changes.
Differential Phase: A peak-to-peak measurement that specifies the extent to which the chrominance phase is affected by the luminance level. Expressed in degrees of subcarrier phase, it indicates how much hue shift occurs with luminance level changes.
Digital Video Broadcasting (DVB): A specific project office of the European Broadcast
Union. This group has produced a set of digital broadcasting standards.
DSK: Down Stream Key, a keyer that is electronically located after (or "downstream from") all other functions of a switcher. The key resulting appears to be on top of all other pictures from the switcher.
DVB: See Digital Video Broadcasting.
D-VITC: Digital Vertical Interval Time Code. Time code information is stored on specific lines in the vertical blanking interval of a television signal.
EAV: End of active video in component digital systems.
EBU: European Broadcasting Union.
Editor: A device or system that controls video tape recorders, video switchers, and other related devices, to electronically splice segments of recorded video into a finished production.
EDH: Error Detection and Handling. A recommended practice defined in SMPTE RP 165. A system to generate and then detect video data errors in serial digital video systems.
Effects Keyer: A keyer that is electronically located in the mix/wipe generator portion of a switcher. The resulting key would appear under the down stream key.
EIA Rack Space or Rack Unit: A specific size as designated by the Electronics Industry
Association. The rack unit is 19 inches wide, and is 1.75 inches tall. A device that requires three (3) EIA rack units is 19 inches wide and 5.25 inches (3x1.75 = 5.25) tall.
Elementary Stream (ES): A generic term for one of the coded video, audio or other variable length bit streams that are packetized to form MPEG-2 transport streams. Consists of compressed data from a single source (audio, video, data, etc.). One elementary stream is carried in a sequence of PES packets with one and only one stream ID.
Embedded Audio: Digital audio information multiplexed onto a serial digital data stream.
Up to sixteen channels can be multiplexed on a single stream of 601 video, minimizing cabling and routing requirement.
Copyright © 2012, Harris Corporation
42
Appendix C
Glossary
ENG: Electronic News Gathering.
Encoded Clip Softness: In the encoded legalization process, "softness," as applied to encoded clips, refers to the processing of the video at the point of the clip. The clips are applied in YCBCR color space. The clip point is either an immediate limit (no softness) or has a range of values leading to the clip point, all reduced to smooth the clip point to a less immediate limit (softness).
Encoded Legalization: Limiting of the luminance and color difference signals such that, once encoded into a composite video signal, the resultant encoded video does not violate the maximum or minimum signal levels as defined by the specific encoding rules. NTSC and
PAL video, plus various users of these types of video, have many varied rules for maximum and minimum encoding limits. Encoded legalization usually calculates first the encoded luminance value and then the corresponding chroma value to make legalization judgments.
Encoded Video: A combined single video signal that is constructed from either separate
RGB or luminance and two color difference video signals. NTSC, PAL, and SECAM are all examples of encoded video.
Envelope Detection: An RF signal detection technique that does not respond to phase variations in the carrier signal, enabling measurement of a transmitter's incidental phase.
When used together with synchronous detection, envelope detection helps isolate either video and/or RF as the causes of phase distortion.
External Key Input: This is an alternate source for key cut. This is usually a separate external input to a switcher.
Fade-thru-Black: A two-step process production technique. The first step fades the program video to black. The second step fades from black to the video selected on the preview bus. Usually used in major scene transitions.
Fade-to-Black: A production technique that simply fades the program video to black and the program audio to silent. Used to end programs and to escape from embarrassing pictures or sounds.
Field: A picture or picture portion produced within one cycle of vertical synchronization. In interlaced systems, a full picture or frame requires two consecutive fields.
FM Trap: A circuit designed to minimize potential interference from strong FM signals in receiving equipment, such as a TV demodulator. For example, an FM trap can attenuate signals between 88-108 MHz to reduce interference on NTSC television channel 6.
Frame: A single full resolution picture as viewed in either a video or a film system. In the case of interlaced video, two consecutive fields provide all of the information of one frame.
In non-interlaced systems, one cycle of vertical synchronization produces a frame. A 60 Hz interlaced system, produces 30 frames of video in one second. A 60 Hz progressive (or non-interlaced) system produces 60 frames of video in one second. Common frame rates are 24 (film) 25, 29.97, 30, 50, 59.94 and 60.
Frame Synchronizer: An electronic device that synchronizes two or more video signals.
Using one input as a reference, it locks a second signal to the reference.
Frame Store: An electronic method of capturing and storing a single frame of video.
Gamma: This term applies to the linearity of the change from black to white. Gamma controls adjust the gray or 50% point of the video either up or down, with the effect of changing the gray level of the video.
Copyright © 2012, Harris Corporation
VSX-11-3G
Installation and Operation Manual
43
Gamut: The whole or total of whatever is being addressed. In color space, gamut refers to all colors that are included in a particularly defined color group, such as 601 gamut.
Genlock (Generator Lock): A method of synchronization involving the generation of a video signal that is time and phase locked with another signal.
GPI: General Purpose Interface.
Headend: In a cable TV system, the facilities where program sources (satellite, terrestrial,
VTR, local) are received and remodulated for distribution through a cable plant.
High Definition Television (HDTV): High definition television has a resolution of approximately twice that of conventional television in both the horizontal (H) and vertical
(V) dimensions and a picture aspect ratio (H to V) of 16:9.
High Level: A range of allowed picture parameters defined by the MPEG-2 video coding specification that corresponds to high definition television.
HRC: Harmonically-Related Carrier.
Hue: Color tint.
ICPM: Incidental Carrier Phase Modulation. A measurement of picture carrier phase distortion (affected by the video signal level) that occurs in the transmitter.
IRC: Incrementally-Related Carrier.
I.R.E.: Refers to the Institute of Radio Engineers, and is used as a unit of measurement. In
NTSC television, 1 volt of signal equals 140 IRE units.
Key: An effect in television whereby a selected portion of background video is removed and replaced with another video.
Key Cut: In a key effect, this is the video that designates the portion of background video, which is removed.
Key Fill: In a key effect, this video replaces the removed portion of background video. This may be the same video as the Key Cut video.
Key Invert: In a key effect, this electronic action reverses the polarity of the key cut signal.
It makes black appear as white, and white appear as black.
Key Mask: In a key effect, the key mask uses a wipe pattern from the wipe pattern generator to restrict the key cut from removing video in a portion of the screen. This action requires the use of both the wipe pattern generator and the Mask/Preset Size controls.
Key Source: Same as key cut.
Legalization: The modification of serial digital video to conform to analog color space rules, as required by users.
LCD: Liquid Crystal Display.
LED: Light-Emitting Diode.
LTC: Longitudinal Time Code. A SMPTE time code standard usually recorded onto the linear audio track of a VTR.
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Appendix C
Glossary
Luminance: The degree of brightness (black and white portion of the video signal) at any given point in the video image. A video signal is comprised of luminance, chrominance, and sync. If luminance is high, the picture is bright; if low, the picture is dark. Changing the chrominance does not affect the brightness of the picture.
Main Level: A range of allowed picture parameters defined by the MPEG-2 video coding specification with maximum resolution equivalent to standard definition television.
Main Profile: A subset of the syntax of the MPEG-2 video coding specification that is supported over a large range of applications. Applications include MP@HL (Main Profile at
High Level), and MP@ML (Main Profile at Main Level).
Mask/Preset Size: Uses the wipe pattern generator in the keyer portion of the effects generator. Used to adjust the size of a preset pattern, or to adjust the size of a mask to block a portion of the key cut (source) from use in the keyer.
Matte Generator: An internal generator that can make any color, is used for border color, and can be used for key fill. It is identical to the Color Background Generator, but simply used in other areas of the switcher.
Mbps: Megabits per second.
mV: Millivolts.
M/E: Mix/Effects System.
MP@HL: Main Profile at High Level.
MP@ML: Main Profile at Main Level.
MPEG: Refers to standards developed by the ISO/IEC JTC1/SC29 WG11, Moving Picture
Experts Group.
MPEG-2: Refers to ISO/IEC standards 13818-1 (Systems), 13818-2 (Video), 13818-3
(Audio), and 13818-4 (Compliance).
Multi-Level Effects: Applies to any effects generator that can do more than one effect at a time. Typically, a multi level switcher can produce a Key and a Background transition in the same effects generator at one time.
Non-Interlaced: Also "progressive scanning." A system of video scanning where lines of a picture are transmitted consecutively, such as with VGA monitor displays.
NTSC: National Television Systems Committee. The color television system used in the
United States, Canada, Mexico, and Japan.
Packet: A packet consists of a header followed by a number of contiguous bytes from an elementary data stream. It is a layer in the system coding syntax.
Packet Identifier (PID): A unique integer value used to associate elementary streams of a program in a single or multi-program transport stream.
Packetized Elementary Stream (PES): The data structure used to carry elementary stream data. The packets consist of a header followed by payload data; a stream is a series of packets that form an elementary stream and have a single stream identification.
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PAL: Phase Alternation Line; the standard color television system in many European and other countries.
PAT: See Program Association Table.
Passive Looping: Video and audio signals routed through components, even if power is removed. Signals are not amplified or processed, maintaining transparency.
PCR: See Program Clock Reference.
Pedestal Level: An offset used in a video system to separate the active video from the blanking level by maintaining the black level above the blanking level by a small amount.
PES: See Packetized Elementary Stream.
Pixel: A Picture cell or Picture element representing one sample of picture information, such as an individual sample of R, G, B, luminance or chrominance.
PMT: See Program Map Table.
Preset: Refers to establishing any condition prior to use on the Program output. Used in reference to wipe patterns; often interchanged with "Preview."
Preview: The video output channel used to view the intended Program results prior to the execution of the next transition.
PRO Audio: A transmitted audio channel for talent cueing via Interrupt Foldback (IFB) to
ENG vans and remote applications. Some demodulators support PRO audio monitoring.
Program: A transport stream combination of a video stream and one or more audio and data streams associated with that video stream. In analog terms, "Program" refers to the
Base Band video and audio produced by the final output of a switcher.
Program and System Information Protocol (PSIP): Information sent out as part of an
ATSC transport stream that lists all of the video, audio, data, and program information contained in the stream. This is the "TV guide" for a given stream.
Program Association Table (PAT): A list of all programs in the ATSC data stream.
Program Clock Reference (PCR): A time reference signal placed in MPEG streams to coordinate various data streams.
Program Map Table (PMT): A listing of all elementary streams that comprise a complete
(television) program.
Progressive Scanning: Also "non-interlaced". A system of video scanning whereby lines of a picture are transmitted consecutively, as with VGA monitor displays.
PSIP: See Program and System Information Protocol.
Push-Push Toggle Switch: An electro-mechanical device which, when pushed, alternates the condition of the switch. Push once, it's off; push again, it's on.
Quadrature Output: An output in a television demodulator used for measuring Incidental
Carrier Phase Modulation (ICPM) in a transmitter.
QPSK: Quadrature phase shift keying; typically used by satellite downlinks.
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Appendix C
Glossary
QAM: Quadrature Amplitude Modulation; The technique used by cable TV systems
(64-QAM and 256-QAM) to remodulate signals for distribution in a cable plant.
RGB Legalization: Limiting of luminance and color difference video signals such that, once transcoded into RGB component video signals, the resultant video does not violate the maximum or minimum signal levels as defined by component video level rules. Typically, the maximum value for R, G, or B is 700 mV, and the absolute minimum value for any of these signals is 0 mV.
Reclocking: The process of regenerating digital data with a clock recovered from the input data.
Resolution: A measure of the finest detail that can be seen, or resolved, in a reproduced image.
RS-422: Recommended Standard number 422. An E.I.A. standard that describes a type of data interchange. Television products use this standard as its communication format between the electronics frame and editors, control panel and computers. An RS-422 line may be extended up to 1,000 feet (304m).
Sampling: Process by which an analog signal is sampled to convert the analog signal to digital.
SAP: Secondary Audio Program; used in television broadcast for second language broadcasting, simulcasting, and separate audio programming.
Saturation: Color intensity.
SAW Filter: Surface Acoustic Wave filter.
Segment Error Rate (SER): A calculated average of uncorrected transport stream packets vs. total packets as accumulated over a designated period.
SER: See Segment Error Rate.
Signal to Noise Ratio-Analog (SNR): A measurement of the noise level in a signal, expressed in dB (decibels) as a ratio of between the audio or video signal's maximum peak-to-peak signal voltage and the measured voltage of noise present when the signal is removed. Higher SNR figures indicate that any noise introduced by system components is not be perceived in the picture and sound output signals.
Signal to Noise Ratio-8VSB (SNR): As applies to 8VSB transmissions, this is a calculated average power of the ideal signal divided by the actual demodulated signal power.
SMPTE: Society of Motion Picture and Television Engineers.
SNR: Signal to Noise Ratio.
Standard Definition Television (SDTV): Signifies a digital television system in which the quality is approximately equivalent to that of NTSC. This equivalent quality may be achieved from pictures originated at the 4:2:2 level of ITU-R BT.601 and subjected to processing as part of the bit rate compression. The results should be such that when judged across a representative sample of program material, subjective equivalence with NTSC is achieved.
The displayed picture may be either the traditional 4:3 or the wide-screen 16:9 aspect ratio.
STL: Studio-transmitter link.
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Synchronous Detection: A common detection technique used in television demodulators that removes quadrature distortion, enabling comparison of transmitter output with video input signal.
S-Video: Also "Y/C." Transmits luminance and color portions separately via multiple wires, thus avoiding the color encoding process and resulting loss of picture quality.
Tally: A system used to light lamps and indicate usage. Most production switchers have an internal tally system to indicate selected functions, and which selected functions are currently involved with Program.
Telecine: A device used to convert film to video. Movie film is digitally sampled and converted to video frame by frame in real-time.
TCXO: Temperature Compensated Crystal Oscillator.
THD: Total Harmonic Distortion.
Transport Stream-ATSC (TS): Consists of the following: (1) Packets: 188 bytes, fixed length with descriptive data; (2) Carries several programs; (3) a PID that identifies the type of TS packet (video, audio, other); and (4) carries descriptive information about the program.
UHF: Ultra High Frequency.
Unity Gain: An electronic term indicating that a signal is neither amplified nor attenuated.
One volt of signal level in results in one volt of signal level out.
Vector Clip: A special encoded clip version that limits only the CB and CR input video signals and does not affect (nor is it affected by) the luminance component. This color-only clip limits the maximum vector excursions as viewed in an encoded state and is intended for users who wish to prevent encoded vectors from ever exceeding the perimeter circle of an encoded vector display.
VHF: Very High Frequency.
VITC: Vertical Interval Time Code. A method for recording onto videotape the time code address for each video frame inserted in the vertical interval.
White Balance: An electronic process used to calibrate the picture for accurate color display in different lighting conditions.
White Level: The brightest part of a video signal, corresponding to approximately 1.0 Volt.
Wipe: A special effect in which two pictures from different video sources are displayed on one screen. Production switchers and special effects generators provide numerous wipe patterns varying from simple horizontal and vertical wipes to multi-shaped, multi-colored arrangements.
XGA: High-resolution 1024x768 non-interlaced (progressive) display monitor.
YPBPR: CAV format composed of luminance (Y) and two color difference signals (PB and
PR).
Y/C: Also "S-video." Describes the separation of video signal luminance and chrominance components.
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Appendix C
Glossary
Zero Carrier Pulse (chopper): In a TV demodulator, removes the carrier in the vertical interval for a short period, enabling depth of field measurement.
Copyright © 2012, Harris Corporation
Index
A
Access panel
AES/EBU audio
Airflow requirements
Amplitude specification
Audible alarm disable
Audible alert
audible alert
Auto mode
Auto switch
Automatic switch conditions
B
Back panel
Backup input
Backup input specifications
Backup source indicator
Blackburst
Buttons auto lock
panel lock
reset
sync source
buying manuals
C
Cable connections
Calibration
Channel status indicator
Channels
Configuration
DIP switches
Connections
Customer service
D
Defined switch positions
Delay, power-up
DIP switch configuration
DIP switches
Directives
RoHS
WEEE
E
Environmental specifications
F
Fault reporting
Front panel
,
G
Glossary
GPI pinouts
specifications
GPI connector
GPI disable
GPI operation
H
HD tri-level sync
Humidity specifications
I
Input specifications
Input switching
Internal channel configuration switches
L
LED indications
LED, panel lock
LED, power
LEDs
Loss of signal
M
Manual information
Manual mode
Copyright © 2012, Harris Corporation
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50
Index
Manual override
Manual switch conditions
manuals, purchasing
Mechanical specifications
N
NTSC blackburst
O
Operating temperature, Storage temperature
Output
Override relay
P
PAL blackburst
Panel lock
Panel lock LED
Power connector
Power LED
Power source, connecting
Power specifications requirements
Power supply
Power Up delay
Power up specifications
Primary input
Primary input specifications
Primary source indicator
R
Rack mounting
Reference detection specification
Relay override
Reset button
Restriction on Hazardous Substances (RoHS) directive
revision history
S
Safety compliances
directives
standards
symbols
Serial digital video
Service support
Shipping
Signal generator connections
Signal loss
Source active
Specifications
–
Support documents
Switch conditions
Switch failure
Sync source
Sync source active
T
Terms
–
Threshold adjustments
Toggle sync source, Auto input switching
Transportation specifications
Tri-level sync
W
Waste from Electrical and Electronic Equipment
(WEEE) directive
Web site, location of manuals
Copyright © 2012, Harris Corporation
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Key features
Automatic and manual switching
Front panel lock
Individual channel status display
Simple access to DIP-switch configuration
GPI functionality
Frequently asked questions
There are two methods to disable the alert tone: Physically remove the VSX-11-3G from the rack and access DIP switch SW12 position 2 from beneath the access panel. Set SW12 position 2 to ON. Or press the RESET button for less than three seconds to access a five-minute period of silence.
The VSX-11-3G may only be used with the power supplies provided by Harris or a UL Listed Limited Power Supply (LPS). See Power Requirements on page 32 for the power supply specifications.
The VSX-11-3G provides both automatic and manual switching options. In Auto mode, the unit automatically switches to the secondary source when an error occurs in the primary signal. In Manual mode, you can manually select between the primary and secondary sources using the SYNC SOURCE button.
