Digital Transition Survival Guide from Blonder

Transcription

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Products You Can
Depend
On!
FIBER DIGITAL IPTV
•
•
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FODA
AQD
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IPME
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For more information, call or visit our website at
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Digital Transition Survival Guide
Table of Contents
How To Use This Guide ....................................................................................................................... 3
Digital Television Overview ....................................................................................................................... 5
Safety Instructions..................................................................................................................................... 7
Digital Off-Air (8VSB) Reception - Digital Viewing (8VSB) ........................................................................ 8
DHDP Spec Sheet ................................................................................................................................... 10
Digital Off-Air (8VSB) Reception - Analog Viewing ................................................................................. 12
Digital CATV (QAM) Reception - Analog Viewing ................................................................................... 14
EBS/ITFS (QAM) Reception - Analog Viewing......................................................................................... 16
AQD Spec Sheet ..................................................................................................................................... 18
Digital Off-Air (8VSB) Reception - Digital Viewing (QAM) ...................................................................... 22
Digital CATV (QAM) Reception - Digital Viewing (QAM) ........................................................................ 24
AQT Spec Sheet ...................................................................................................................................... 26
Digital CATV (QAM) Reception - Analog Viewing (via IP) ....................................................................... 30
IPME Spec Sheet ..................................................................................................................................... 32
System — Digital Off-Air (8VSB) Reception - Simulcast Viewing (8VSB) Digital & Analog..................... 36
System — Digital Off-Air (8VSB) Reception - Simulcast Viewing (QAM) Digital & Analog..................... 38
www.blondertongue.com
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How to Use This Guide
This publication has been designed to serve as a guide on how to provide signal to televisions in professional/
industrial/educational environments before, during and after the upcoming ‘digital transition’.
The first section of the guide is a general overview concerning the whole digital transition and can be used as a primer
to understanding the changes in television technology. This section is in no way an in depth discussion, but rather
an efficient overview of the digital technology and it’s benefits.
The second section of the guide is a plain English, functional description of the different solutions that can be
incorporated into a facility. Each system is broken down into four distinct sections: “Key”, “Functionality”, “In Depth
Description”, and “Functional Block Diagram”.
The Key is a quick snap shot of what that particular solution entails, covering the Source, Distribution Network and
the Viewing Location. The sample Key below is for a system receiving a digital signal from the local Cable Television
Company, distributing it through the building on a traditional coaxial or fiber network, for use with televisions that
have digital tuners that are set to ‘CATV Mode’.
Source
Digital
Off-Air
8VSB
Digital
CATV
QAM
Distribution Network
Coaxial/
HFC
Viewing Location
Ethernet
Analog TV
Digital TV CATV Mode
Digital TV Broadcast/
Off-Air Mode
PC Running
IPClientViewer
The Functionality section is a plain English, functional description of the different sub-systems that can be
incorporated in to the project. This is designed to give you the most basic idea of what the system will do for the
facility, and can be used to highlight the different uses of the technology.
The In Depth Description builds on the information introduced in the Functionality section, but goes in to deeper
detail. An operational description is given for each item needed to make the system work. As with any type of
technical systems there sometimes are special considerations that must be considered when designing the system,
those considerations will be brought forth in this section.
The Functional Block Diagram section is a graphic representation of how the components interface with
each other. Next to the graphical representation of each component, there is a listing of all the possible items that
can perform that function. If the designer picks one component from each group, the system will have all of the
components required to operate properly, provided that all of the components are properly installed.
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Forward
This Digital Transition Survival Guide has been designed to break down digital broadband systems into their
simple building blocks to be used when specifying an RF System for schools, prisons, sports complexes, or any
type of facility.
Blonder Tongue Laboratories, Inc. has been in the business of manufacturing equipment for broadband systems
over the last 58 years. We have utilized, combined, etc. that knowledge and experience to formulate this Digital
Transition Survival Guide to help Specifiers, Architects and Engineers design and modify RF systems before, during
and after the FCC mandated Digital Transition. You’ll find we use plain English descriptions and simple to use
diagrams to fit your broadband design needs.
We welcome your suggestions or feedback. Simply e-mail us at feedback@blondertongue.com with the subject line
of ‘Digital Transition Survival Guide.’
Caution
The information presented in this manual is intended to be a helpful guide for the design of RF systems. It is
not intended to be applicable or suited to every circumstance which might arise during the construction phases
of RF systems.
The information and drawings contained in the manual are the exclusive property of Blonder Tongue
Laboratories, Inc., but may be reproduced, copied, or published by any means if for the purposes of
specifying, designing, or selling Blonder Tongue products. Appropriate trademark and credit must be
given to Blonder Tongue, and stock and model numbers of the products are not to be changed.
No warranty or liability is implied, nor expressed and this manual should not be construed to be a
replacement for sound judgment and experience as applied to actual field circumstances.
©2008 Blonder Tongue Laboratories, Inc. All rights reserved. All trademarks are property of their respective owners. Specifications are subject to change without notice.
Not responsible for typographical errors.
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Digital Television Overview
Digital Television is a new broadcasting technology that allows signals to be delivered virtually free of interference.
This interference free reception is possible because the Audio and Video information are transmitted as “data bits”
allowing video with higher resolution and dramatically better picture and sound quality than is currently available via
analog transmission. Digital signals can come from many different sources and in many different formats. The three
major formats currently in use in the United States are:
Broadcast Over Air (Off-Air) – 8-Level Vestigial Sideband Modulation (8VSB)
Cable System – Quadrature Amplitude Modulation (QAM)
Satellite System – Quadrature Phase Shift Keying (QPSK/8PSK)
This guide is going to focus on the first two formats and how to utilize them in your facilities. At any viewing location,
these digital signals are received and used in their digital form to drive a Digital television, or they are received by an
integrated decoder, or set-top box. It is important to understand that under the title of ‘Digital Television’ there are
two different standards/levels of signal.
Analog vs. Standard Definition vs. High Definition
The most basic version of ‘Digital Television’ is Standard Definition Television (SDTV), which is nothing more than a
digital version of the traditional Analog viewing that we have been using for the last half century. The version that
has generated all of the media activity and industry excitement is High Definition Television (HDTV). HDTV differs
from SDTV and Analog in that it has; Higher Resolution — 1080 or 720 lines rather than 480 for SDTV and Analog,
Widescreen Format — 16:9 rather than 4:3, Superior Audio — Dolby® 5.1 Surround Sound which is better than
traditional analog stereo.
In the current Analog television system, images are created by interlace scanning, which uses two fields of alternating
horizontal scanning lines to form a full picture, referred to as 480 interlace or 480i. In HDTV, the number of scanning
lines can be doubled to 1080 interlace or 1080i, providing more detailed images that practically jump off the
television screen. It is these lifelike images that are creating a flurry of business in the consumer and professional
electronics industries as individuals and facilities start to upgrade the quality of their viewing locations. HDTV can also
be broadcast as a “Progressive Image” (720p) like a computer monitor. In this format, the full frame fills the screen
from top to bottom, eliminating scan lines altogether.
Why Digital Television?
Digital Television offers many benefits for both broadcasters and consumers. Digital Television is more efficient
transmission method than Analog Television. In the same bandwidth a broadcaster/operator can provide one
analog channel of programming, OR one high definition program AND/OR multiple standard definition programs
simultaneously. When broadcasters provide multiple programs within one channel, it is called multicasting. The
number of programs that a broadcaster/operator can transmit in a single channel depends on the level of picture
detail, or resolution. The digital streams offer improved security to prevent unauthorized people from receiving
services that they are not authorized to view.
For the consumer, there are also benefits of going digital. There is an increased video programming capacity
within the same bandwidth, providing more viewing options for the consumer. One of the biggest improvements
is the improved picture quality. The standard definition programs have an improved quality because the digital
programming data stream is not subject to the degradation that takes place with the traditional analog transmission.
All of the marketing hype around the quality of the HDTV images is well founded. The HDTV images have very vivid,
crisp pictures and vibrant colors that are realistic and lifelike. Sometime after the digital transition is complete, there
will be increased programming options like interactivity and video-on-demand.
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What Is The FCC Transition Plan?
Congress has determined that the current analog broadcast service must eventually convert completely to digital
operation. On December 24, 1996 the Federal Communications Commission (FCC) adopted the major elements of
the American Television Standards Committee (ATSC) Digital Televisions (DTV) standard, mandating its use for digital
terrestrial television broadcasters in the United States. In 1997 the FCC adopted the companion DTV rules, assigning
an additional 6 MHz channel to approximately 1,600 full-power broadcasters in the US. This permitted broadcasters
to simulcast, or transmit analog & digital signals in parallel during the transition period while consumers made the
conversion to digital televisions. Cable Television and other video media are also transitioning to digital, but are doing
so for business or quality reasons, not federal mandate.
As of June 12, 2007, 1,241 Stations in 211 Markets were broadcasting in digital.1 The current target date set for
the completion of the digital transition is February 17, 2009. The date has been moved back several times since it’s
original inception. In light of all the recent public service announcements that the FCC has been running, many in
the industry feel that this date is going to stick. When the transition completion date is reached the analog spectrum
will revert back to the FCC.
The FCC did not mandate the use of the specific format, so broadcasters are free to choose which digital format to
transmit, even if it means mixing formats. There are eighteen ATSC digital television formats; four Video Graphics
Array (VGA) formats, eight Standard Definition (SDTV) formats, and six High Definition (HDTV) formats. In order to
help the adoption of digital television, the FCC required ATSC Digital Tuners to be integrated into new televisions.
The schedule for the television tuner transition is:
36” and above = July 1, 2004 for 50% of all units; July 1, 2005 for all units
25” to 36” = July 1, 2005 for 50% of all units; July 1, 2006 for all units
13” to 24” = July 1, 2006 for 50% of all units; July 1, 2007 for all units
Industry References
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Federal Communications Commission (FCC), www.fcc.gov
Advanced Television Systems Committee (ATSC), www.atsc.org
National Association of Broadcasters (NAB), www.nab.org
FCC Digital Transition, www.dtv.gov
National Cable and Telecommunications Association (NCTA), www.ncta.com
Society of Cable Television Engineers (SCTE), www.scte.org
Useful Websites
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Reference & Products, www.blondertongue.com
Off-Air Antenna Reports, www.antennaweb.org
Acronym Search, www.ucc.ie/cgi-bin/acronym
Satellite Information, www.lyngsat.com
Satellite Signals Information, www.satsig.net
Online Satellite Calculations, home.online.no/~jensts/satellite.html
Satellite Lookup, www.geo-orbit.org
Glossary, www.satnews.com
Rules For Telecommunications, www.its.bldrdoc.gov/fs-1037
Off-Air Antenna Reports, www.tvfool.com
1 For a complete listing of DTV broadcast stations, please refer to http://www.nab.org/ or http://www.fcc.gov/mb/video/files/dtvonair.html
8
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Safety Instructions
You should always follow these instructions to help ensure against injury
to yourself and damage to your equipment.
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Read all safety and operating instructions before you operate the unit.
Retain all safety and operating instructions for future reference.
Heed all warnings on the unit and in the safety and operating instructions.
Follow all installation, operating, and use instructions.
Unplug the unit from the AC power outlet before cleaning. Use only a damp cloth for cleaning the exterior
of the unit.
Do not use accessories or attachments not recommended by Blonder Tongue, as they may cause hazards,
and will void the warranty.
Do not operate the unit in high-humidity areas, or expose it to water or moisture.
Do not place the unit on an unstable cart, stand, tripod, bracket, or table. The unit may fall, causing serious
personal injury and damage to the unit. Install the unit only in a mounting rack designed for 19” rackmounted equipment.
Do not block or cover slots and openings in the unit. These are provided for ventilation and protection
from overheating. Never place the unit near or over a radiator or heat register. Do not place the unit in an
enclosure such as a cabinet without proper ventilation. Do not mount equipment in the rack space directly
above or below the unit.
Operate the unit using only the type of power source indicated on the marking label. Unplug the unit power
cord by gripping the plug, not the cord.
The unit is equipped with a three-wire ground-type plug. This plug will fit only into a ground-type power
outlet. If you are unable to insert the plug into the outlet, contact an electrician to replace the outlet. Do
not defeat the safety purpose of the ground-type plug.
Route power supply cords so that they are not likely to be walked on or pinched by items placed upon or
against them. Pay particular attention to cords at plugs, convenience receptacles, and the point where they
exit from the unit.
Be sure that the outdoor components of the antenna system are grounded in accordance with local, federal,
and National Electrical Code (NEC) requirements. Pay special attention to NEC Sections 810 and 820.
See the example shown in the following diagram:
Satellite Dish
Ground Clamp
Coaxial Cable
from Satellite Dish
Electric Service
Equipment
Antenna Discharge Unit
(NEC Section 810-20)
Ground Clamps
Power Service
Grounding
Electrode System
(NEC Art. 250, Part H)
Grounding Conductors
(NEC Section 810-21)
7
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Digital Off-Air (8VSB) Reception - Digital Viewing (8VSB)
Source
Digital
Off-Air
8VSB
Digital
CATV
QAM
Coaxial/HFC
Ethernet
Viewing Location
Analog TV
Off-Air Mode
PC Running
IPClientViewer
Functionality
The federal government has set February 17, 2009 as the digital transition cut-off date. This means the current
simulcasting of both analog and digital HDTV/SDTV broadcasts will end and only digital TV broadcasts will
be available over the air. All facilities with television systems that are utilizing off-air programming must be
upgraded before then in order to maintain program delivery. This system will allow you to receive the local,
digital (8VSB) off-air broadcast programming that is available in the market and distribute it through the facility
in it’s original digital format. This signal can now be handed off to a traditional coaxial distribution network or
a hybrid fiber/coax distribution network within the facility. A digital television with an 8VSB tuner is required
to display this channel. The main component difference between a digital and standard analog channel in
the headend is the channel processor. Because of signal format differences, the digital signal requires a digital
channel processor that is specifically designed for digital off-air broadcasts. It is important to note that standard
analog channel processors will not work on digital channels and standard television sets will not receive digitally
transmitted programs.
In Depth Discussion
Antennas are selected based on the frequency/channel that is to be received, not the content, all off-air/
broadcast antennas will receive both analog and digital signals, however receiving the new digital off-air channel
may require a new antenna because of the new channel frequency assignment of the digital channel. Since the
necessity of a pre-amp cannot be determined until a site survey is performed, it is advisable to specify one “as
required by site survey”. The pre-amplifier is mounted outside on the antenna mast, and requires a separate
power supply that is mounted in the building. The appropriate power supply for the preamplifier being used
must be specified separately. The digital processor is the system component that filters and amplifies to condition
the particular channel being received. The processor can convert the received channel to another channel for
output onto the system. It is common practice to convert desired local UHF channels to non-broadcast VHF
channels in the market. This is done to minimize losses, and make it easier to construct and manage the
distribution network. When the new channel is combined with other channels in the facility it must be done at
the correct level so that the signals do not interfere with each other. Digitally modulated carriers (ATSC, 8VSB,
QAM) should have an output signal level that is about 10 dB less than it’s equivalent analog channel. Selecting
one product from each category on the following page will insure you will have all the necessary components
for a working system.
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DHDP Series
Easily Deliver Digital &
High Definition Programming
Blonder Tongue’s Digital High Definition Processor (DHDP) Series gives cable television operators the
ability to easily deliver digital & high definition programming from 8VSB off-air sources to customers
over existing cable systems.
The DHDP Series is a two-part system that receives any high definition or digital signal and processes it
to any available 6 MHz channel in the 54-860 MHz frequency range. The unit does not modify any of
the data stream information throughout the process guaranteeing compatibility with many consumer
decoders. Achieving the highest level of signal purity, the DHDP features triple SAW filtering that
results in extremely high adjacent channel rejection. Plus, advanced AGC circuitry ensures consistent
output signal fidelity. All modules are housed in Blonder Tongue’s advanced die-cast micro housing and
compatible with Blonder Tongue MIRC style chassis units.
With DHDP Series Converters, an operator uses an off-air antenna to receive the digital & high
definition programming from local broadcast sources. These signals, currently found in the UHF band,
are transmitted in 8 Vestigial Side Band (8VSB) format. The 8VSB signal is received by the DHDC-D,
converted to IF and then fed to the DHDC-U. The DHDC-U then upconverts the signal to any available
channel, including on-channel if desired, for distribution on the existing cable system. The signal can
then be viewed at the customers’ homes with any HDTV-capable television or a standard television with
an external HDTV receiver.
• Brings Digital and HDTV Programming to Existing Systems
• Agile Off-Air Channel Inputs and Outputs are Selected by Simple Switches
• Superior Triple SAW Filtering for Ultra-Clean Adjacent Channel Performance
• Encased in Advanced Die-Cast Housing for Compatibility with
Standard Blonder Tongue Micro-Modular Racks & Power Supplies
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DHDP Series
Digital High Definition Television Processor
❍ Features & Benefits
• Digital & High Definition Capable
• MICM Form Factor
• 54-860 MHz 8VSB Input
• 54-860 MHz CATV & Broadcast Output
• Excellent Noise Performance - 88 dBc @10 kHz & 98 dBc @20 kHz
• +40 dBmV Digital Output Level (+45 dBmV Analog Signals)
❍ Specifications
The DHDP Series is a two-unit system consisting
of a Downconverter unit which acts as the input
section and an Upconverter unit which acts as
the output section. Both units are housed in a
single MICM style die-cast chassis.
The Downconverter unit is designed to accept
any 8VSB signal from 54-860 MHz. Channel
entry is made using a 2 digit front panel
accessible BCD switch. (I.E. - VHF 2-13, UHF
14-69 & unused spectrum 806-860 MHz). The
Downconverter outputs an IF signal which is fed
to the Upconverter unit.
The Upconverter unit is designed to take the IF
signal from the downconverter and process it to
any channel from 54-860 MHz. Channel entry is
made using a 2 digit front panel accessible BCD
switch. (I.E. - CATV – STD, IRC & HRC as well as
Broadcast VHF & UHF).
DOWNCONVERTER
RF
Input Frequency Range: (8VSB)
VHF 2-13: 54-216
UHF 14-69: 470-806
UHF Extended: 806-860
Operating Input Range: -10 to +20 dBmV
Input Level Range:
(AGC Controlled) -20 dBmV to +25 dBmV
Adj. Ch. Rejection: (Ref. to +30 dBmV IF output)
Adj. Aural and Below: >65 dB
Adj. Visual and Above: >65 dB
Output Frequency: 44 MHz IF
Output Level:
+30 dBmV (-20 to +25 dBmV Input)
L.O. Leakage on RF Input Port: -50 dBmV
Phase Noise: @ 10 KHz Offset -85 dBc/Hz
General
Power Requirements:
+12 VDC: 120 mA
+5 VDC: 160 mA
Power:
Operating Temperature Range: 0 to +50 ºC
Mechanical
Dimensions (W x H x D):
1.15 x 3.5 x 7.5 in., 29 x 89 x 101 mm
Weight: 0.8 lbs., .36 kg
Connectors:
RF Input: "F" Female
IF Output: "F" Female
Power: 3 Pin Polarized Receptacle
Controls:
Channel Selection: 2 Digit Push Button
Channel Enter: Push Button
Indicators:
Power On/Status OK: 2 color LED/Green
Status (Error): 2 color LED/ Red
UPCONVERTER
RF
Output Frequency Range: 54-860 MHz
Channels: CATV- STD, IRC, HRC
Broadcast; VHF, UHF
Output Frequency Tolerance: ±5 KHz
Output Level:
Analog: +45 dBmV (IF Input +35 dBmV)
Digital: +40 dBmV (IF Input +30 dBmV)
Output Level Adj. Range: 10 dB
Channel Flatness: 1 dB
Spurious Output 50-1000 MHz: -60 dB
C/N Ratio In Channel:
Digital: -60 dB
(6 MHz BW +40 dBmV Output)
Analog: -65 dB
Broadband Noise: -76 dBc
Phase Noise:
@ 10 KHz Offset -88 dBc
@ 20 KHz Offset -98 dBc
Output Impedance: 75 Ω
Output Return Loss: 12 dB
General
Power Requirements:
+12 VDC: 140 mA
+5 VDC: 300 mA
Power: 3.2 W
Operating Temperature Range: 0 to +50 ºC
Mechanical
Dimensions (W x H x D):
1.15 x 3.5 x 7.5 in.
29 x 89 x 101 mm
Weight: 0.8 lbs., 0.36 kg
Connectors:
IF Input: "F" Female
RF Output: "F" Female
Power: 3 Pin Polorized
Controls:
Channel Selection: 2 Digit Push Button
Channel Enter: Push Button
RF Output Level: Control
Indicators:
Power On/Status OK: 2 color LED/Green
Status (Error): 2 color LED/ Red
❍ Ordering Information
Model
Stock No.
Description
Model
Stock No.
Description
DHDC-DV
DHDC-UV
DHDP-V
6264
6265A
6266A
Digital & HDTV Downconverter
Digital & HDTV Upconverter
Digital & HDTV Processor Vertical Combo
MIRC-12V
7715
MIPS-12C
7722C
12 Module Rack for Vertical Application
(6 Channels in 3RU)
Power Supply for Vertical Application
Blonder Tongue Laboratories, Inc. • One Jake Brown Road, Old Bridge, NJ 08857
©2007 Blonder Tongue Laboratories, Inc. All Rights Reserved. Specifications subject to change without notice.
All trademarks are property of their respective owners.
800-523-6049 or 732-679-4000 • www.blondertongue.com
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Digital Off-Air (8VSB) Reception - Analog Viewing
Source
Digital
Off-Air
8VSB
Digital
CATV
QAM
Coaxial/HFC
Ethernet
Viewing Location
Analog TV
Off-Air Mode
PC Running
IPClientViewer
Functionality
The federal government has set February 17, 2009 as the digital transition cut-off date. This means the current
simulcasting of both analog and digital HDTV/SDTV broadcasts will end and only digital TV broadcasts will
be available over the air. All facilities with television systems that are utilizing off-air programming must be
upgraded before then in order to maintain program delivery.
This system will allow you to receive the local, digital (8VSB) off-air broadcast programming that is available in
the market and distribute it through the facility in a format that can be viewed by the existing analog televisions.
The output signal can be delivered via a traditional coaxial or HFC distribution network. This application
assumes that all of the televisions in the system have analog tuners and therefore cannot receive the digital
channel directly.
In Depth Discussion
may require a new antenna because of the new channel frequency assignment of the digital channel. The
requirement for a pre-amp or not cannot be determined until a site survey is performed. It’s advisable to specify
one “as required by site survey”. The pre-amplifier is mounted outside on the antenna mast, and requires a
separate power supply that is mounted in the building. The appropriate power supply for the preamplifier being
used must be specified separately. The AQD Digital Demodulator is the system component that receives the offair digital channel and tunes to a particular program (within the channel) if multiple programs are transmitted.
The digital demodulator provides analog, baseband audio and video outputs to connect an analog modulator.
This modulator then creates the new channel that will be viewed by the existing analog televisions. It is common
practice to re-modulate onto unused VHF or CATV channels to minimize distribution losses and make it easier to
construct and manage the system. When the new channel is combined with other channels in the facility it must
be done at the correct level so that the signals do not interfere with each other. Selecting one product from each
category on the following page will insure you will have all the necessary components for a working system.
14
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Digital CATV (QAM) Reception - Analog Viewing
Source
Digital
Off-Air
8VSB
Digital
CATV
QAM
Coaxial/HFC
Ethernet
Viewing Location
Analog TV
Off-Air Mode
PC Running
IPClientViewer
Functionality
Any facility that wants to utilize a digital cable television feed as a source for their analog televisions will need
to convert the digital signals back to analog for the analog televisions. This system will allow you to receive a
digital (QAM) channel from the local cable company and distribute it to conventional analog televisions in the
facility. The output signal can be delivered via a traditional coaxial or HFC distribution network. This application
assumes that all the TV’s in the system are analog and therefore cannot receive the digital channel directly.
In Depth Discussion
The method to utilizing a digital CATV signal is to employ an AQD Digital Demodulator and modulator in series.
The AQD is an agile device that can be set up to receive a digital CATV channel input signal. Its function is to
extract the audio and video information from the digital carrier and provide separate analog audio and video
output signals. These separate audio and video feeds, also called baseband audio and video, are then applied
to a modulator. It is the job of the modulator to take the audio and video and make them in to a cable TV
channel that can be viewed by the existing analog televisions. This channel can then be combined with other
channels that have been created at the property. It is common practice to re-modulate onto unused VHF or
CATV channels to minimize distribution losses and make it easier to construct and manage the system. When
the new channel is combined with other channels in the facility it must be done at the correct level so that
the signals do not interfere with each other. The keys to success in this system are making sure that the AQD
demodulators have enough input signal to function correctly and making sure that the modulator is adjusted
correctly for proper output level. Selecting one product from each category on the following page will insure
you will have all the necessary components for a working system.
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EBS/ITFS (QAM) Reception - Analog Viewing
Source
Digital
Off-Air
8VSB
Digital
CATV
QAM
Coaxial/HFC
Ethernet
Viewing Location
Analog TV
Off-Air Mode
PC Running
IPClientViewer
Functionality
Any facility that wants to utilize a digital EBS/ITFS feed as a source for their analog televisions will need to
convert the digital signals back to analog for the analog televisions. This system will allow you to receive the
digital EBS/ITFS (QAM) channel transmission and distribute it to the conventional analog televisions in the
facility. The output signal can be delivered via a traditional coaxial or HFC distribution network. This application
assumes that all the TV’s in the system are analog and therefore cannot receive the digital channel directly.
In Depth Discussion
The method to utilizing a digital EBS/ITFS signal is to employ an AQD Digital Demodulator and modulator in
series. The AQD is an agile device that can be set up to receive a digital EBS/ITFS channel input signal from
an EBS/ITFS downconverter. Its function is to extract the audio and video information from the digital carrier
and provide separate analog audio and video output signals. These separate audio and video feeds, also called
baseband audio and video, are then applied to an analog modulator. It is the job of the modulator to take the
audio and video and make them in to a NTSC cable TV channel that can be viewed by the existing analog
televisions. This channel can then be combined with other channels that have been created at the property.
It is common practice to re-modulate onto unused VHF or CATV channels to minimize distribution losses and
make it easier to construct and manage the system. When the new channel is combined with other channels
in the facility it must be done at the correct level so that the signals do not interfere with each other. The keys
to success in this system are making sure that the AQD demodulators have enough input signal to function
correctly and making sure that the modulator is adjusted correctly for proper output level. Selecting one
product from each category on the following page will insure you will have all the necessary components for
a working system.
18
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AQD Family of Products
•
•
•
Front
•
•
•
Receives & Demodulates 8VSB, QAM 64 & QAM 256 (Annex B) Input Streams
Modular & Compact Units Permit High Density — 8 Modules in 3 RU
Outputs 480i NTSC Composite Video
Rear
Common Unit Permits Easy Set-up & Configuration via Front Panel
LCD Controls
Auto-Scan Feature Finds All Available Programming
Optional Remote Computer Control Capability Built-in
Front
•
•
•
Front
•
•
Rear
Optional Unit Permits Complete Remote Monitoring & Control of All Units at a
Headend Location
No Software Installation Required & Works with any Computer – MAC or PC –
Uses Standard Web Interface
Easy to Use Graphical Interface with Advanced Functions Like Real Time Status and
Headend Temperature Monitoring
Rear
Optional Unit Provides Back-up Power for 2 Full AQD
Racks (16 modules)
Built-in Fan Helps Air Circulation for Increased Product
Life Span
•
•
High Performance 3 Rack High Chassis Houses up to 8 AQD
Modules
Specially Configured to Support Optional Custom Splitter to
Make Signal Delivery Simple
Front
Rear
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The ATSC/QAM Demodulator or AQD is a high performance modular digital receiver that allows for the reception and demodulation
of an 8VSB (Off-air SD/HD digital TV Signal) or QAM (Digital CATV) Annex B signal into a baseband NTSC video and audio output.
This permits the delivery of digital television signals in a analog format directly to a television or to interface easily with existing analog
modulators on CATV networks.
Most operators and consumers are aware of the federally mandated US government deadline for the transition from analog to digital
broadcasts. This deadline has been set for February 17, 2009 by Congress. This means that all off-air analog signals will be terminated
and replaced by standard and/or high deﬁnition digital signals. A similar mandate has also been set for the Instructional Television Fixed
Service (ITFS) or newly renamed Educational Broadband Service (EBS) providers. This creates a dilemma for the millions of perfectly
good working analog television sets deployed in the market, especially in educational and institutional environments.
The AQD Series from Blonder Tongue solves this dilemma. Designed to bridge the digital transition gap, the AQD permits the receipt
and delivery of digital originated TV signals in analog format so that the need and requirement to purchase expensive new digital/HD
televisions or converter boxes for each viewing location is eliminated. The AQD provides a infrastructure based solution that allows for
the replacement of sets in a more economical reasonable manner.
•
•
•
•
Any large installed base of analog television viewing locations, easing the cost to upgrade to digital capable televisions immediately
Educational & Institutional Facilities — Schools, Universities, Hospitals, Prisons, Nursing Homes, Military Bases, etc.
EBS Broadcast environments to permit simultaneous analog & digital transmission
Any location that requires digital 8VSB or QAM reception converted to analog
• Television Studios for conversion of digital signals to analog format, great to monitor broadcasts in analog & for locations where
digital upgrade is not permitted
• Any location that has a need to simulcast an analog and digital television signal
• Digital ‘Cherry Picking’ of un-encrypted QAM channels
• Locations that can not budget or afford to replace and upgrade all of the viewing locations to digital capable
HEADEND STATUS
UNIT INFORMATION
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ENTER
RCS INFORMATION
PCM SETUP
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AQD
ATSC/QAM Demodulator
• 8VSB, QAM 64 & QAM 256 (Annex B) Transport Streams
Supported
• Modular & Compact Units Permit High Density
8 Modules in 3 Rack Height
• Easy Set-up & Configuration via Front Panel LCD Controls
• Remote Computer Control Capability via Internet or RS-232
• Decodes all 18 ATSC Video Formats
• Left/Right Stereo Audio Output
The ATSC/QAM Demodulator is housed in a 3
RU Module that allows for 8 units to be inserted
in a chassis with a common power & control
unit. The power and control unit features a 2
line by 16 character liquid crystal display (LCD)
to allow interaction with the easy to follow
user menu functions for simple programming.
The entire rack can also be optionally remotely
controlled via an RS-232 modem or the Blonder
Tongue AQD-RCS.
The AQD provides the operator with a NTSC
composite video via an F connector and audio
via left/right RCA connectors. This is designed
to function seamlessly with Blonder Tongue
analog modulators to allow the delivery of the
desired digital signals in any analog channel.
The unit supports decoding all 18 ATSC
(Advanced Television Systems Committee)
standard formats including 8VSB, annex B
QAM64 & QAM 256. Video is displayed in
480i (NTSC) in 4:3 or 16:9 formats with closed
captioning decoding supported as well.
❍ Specifications
Input — 8VSB Mode
Tuning Range:
UHF 14-69, VHF 2-13 or CATV 2-135
Data Rate: 19.392 Mbps
Input Level: -20 to +20 dBmV
Modulation Type: 8VSB ATSC Compliant
Input Connector: 75 Ohm “F” Female
Input — QAM Mode
Tuning Range: CATV 2-135
Data Rate:
QAM 64 Annex B: 26.9 Mbps, Auto Detection
QAM 256 Annex B: 38.8 Mbps, Auto Detection
General
Power: 115 VAC
Operating Temperature Range: 0° to +50° C
Storage Temperature Range: -25° to +70° C
Humidity: 0 to 95% RH
Mechanical
Module Dimensions: 11.31 x 5.25 x 1.5 Inches
Chassis Dimensions: 5.25 x 19 x 12 Inches
PCM Dimensions: 10.625 x 5.25 x 4.43 Inches
Mounting: Standard 3 EIA Unit Height – 5.25” x 19”
Module Weight: 1.5 lbs.
Input Level: -20 to +20 dBmV
PCM Weight: 4 lbs.
Input Connector: 75 Ohm “F” Female
Fully Loaded Weight: 24 lbs.
Output — NTSC Composite Video
Output Level: 1 Vp-p
Video Aspect Ratio: 4:3, 16:9 (Pan and SCAN)
Closed Captioning: EIA-608
LCD: 2 line x 16 character display
Switches: 5 push button navigation switches
Computer Control:
Optional Remote Configuration Server
Video Format: 480i NTSC
Output — Analog Audio
Audio Level: 1 Vrms
Audio Control: Adjustable
Connectors: RCA left/right
Model
Stock No.
Description
AQD
AQD–PCM
6245
6246
QTRC
6233
ATSC/QAM Demodulator – Module
ATSC/QAM Demodulator –
Power & Control Module
QAM Transcoder Rack Chassis
Model
Stock No.
Description
AQD/AQT-SPS
QT-RFC
QTHF
6253
6234-1
6235
AQD/AQT Standby Power Supply Unit
8 Way RF Combiner/Splitter
QT/AQD Headend Fan
I
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Digital Off-Air (8VSB) Reception - Digital Viewing (QAM)
Source
Digital
Off-Air
8VSB
Digital
CATV
QAM
Coaxial/HFC
Ethernet
Viewing Location
Analog TV
Off-Air Mode
PC Running
IPClientViewer
Functionality
It is common for digital televisions to only lock to digital CATV QAM signals when the digital television is set
or tuned to the “CATV” mode. This creates difficulties for systems/facilities transmitting standard ATSC digital
off-air or broadcast 8VSB signals. This solution solves this problem by converting an entire 8VSB digital off-air
channel to a digital QAM signal. This new QAM channel will be available in the CATV band permitting the
current generation of digital televisions that are integrated with QAM tuners to easily tune and display the
television picture. This eliminates the problem of having to reprogram the television every time the customer
wants to switch between digital CATV and digital off-air channels.
In Depth Discussion
may require a new antenna because of the new channel frequency assignment of the digital channel. The
requirement for a pre-amp or not cannot be determined until a site survey is performed. It’s advisable to specify
one “as required by site survey”. The pre-amplifier is mounted outside on the antenna mast, and requires a
separate power supply that is mounted in the building. The appropriate power supply for the preamplifier being
used must be specified separately. The AQT ATSC to QAM Transcoder is the system component that receives
the off-air digital (8VSB) channel and changes the modulation scheme. The ATSC to QAM Transcoder (AQT) is a
modular unit that receives either an 8VSB (Digital Off-air) or QAM (Digital CATV) signal, and transcodes it to any
CATV QAM channel. The transcoding enables televisions with QAM digital tuners to seamlessly view the 8VSB
Off-air digital signals on cable television frequency assignments without having to change the television tuner
input from ‘CATV’ mode to ‘Off- Air’ mode. The input digital signal is stripped of it’s original digital modulation
(8VSB or QAM), leaving just the basic data stream. The AQT then creates a new, clean QAM carrier and reinserts
the original data stream on to this new QAM carrier. If the original channel was encrypted, it will remain
encrypted, if the original channel was in the clear, it will remain in the clear. Selecting one product from each
category on the following page will insure you will have all the necessary components for a working system.
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Digital CATV (QAM) Reception - Digital Viewing (QAM)
Source
Digital
Off-Air
8VSB
Digital
CATV
QAM
Coaxial/HFC
Ethernet
Viewing Location
Analog TV
Off-Air Mode
PC Running
IPClientViewer
Functionality
This system is the digital version of a traditional ‘Cherry Picker’ system. The system will allow you to select a
few desired digital channels from the local Cable Television Company, and ignore the undesired channels. These
desired digital channels can then be redistributed through the existing hybrid fiber / coaxial network within the
facility. This is extremely valuable if a large facility only has a 450 MHz distribution network, and the MSO’s
digital offering starts at 650 MHz, there is no room for the digital tier without a costly network upgrade. The
AQT can receive the desired high frequency QAM channels and transcode them to available channels within
the existing 450 MHz network, delivering the desired CATV QAM channels, while preventing a costly network
upgrade. If the original CATV QAM channel was encrypted, it will remain encrypted, requiring an authorized
set-top for viewing. If the original CATV QAM channel was in the clear, it will remain in the clear, and can be
viewed on any television with a QAM digital tuner set to “CATV” mode.
In Depth Discussion
The ATSC to QAM Transcoder (AQT) is a modular unit that receives the QAM (Digital CATV) signal and
transcodes it to another CATV QAM channel. The AQT can be used to ‘Cherry Pick’ selected digital channels
from the existing CATV QAM digital lineup and process it for redistribution. If the original CATV QAM channel
was encrypted, it will remain encrypted, requiring an authorized set-top for viewing. If the original CATV QAM
channel was in the clear, it will remain in the clear, and can be viewed on any television with a QAM digital
tuner set to “CATV” mode. This system will allow the facilities operator to insert the selected CATV QAM carriers
in to a bandwidth limited private CATV network. The input digital signal is stripped of it’s original QAM digital
modulation, leaving just the basic data stream. The AQT then creates a new, clean QAM carrier and reinserts
the original data stream on to this new QAM carrier. Selecting one product from each category on the following
page will insure you will have all the necessary components for a working system.
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AQT Family of Products
•
•
•
•
Receives & Transcodes 8VSB (Digital Off-Air) Signals to QAM
Modular & Compact Units Permit High Density – 8 Modules in 3 RU
Outputs 12, 32, 64, 128, or 256 QAM
Common Unit Permits Easy Set-up & Configuration via Front Panel
LCD Controls
Supports Powering & Control for 8 Modules
Optional Remote Computer Control Capability Built-in
•
•
•
•
•
•
•
Optional Unit Permits Complete Remote Monitoring & Control of All Units at a
Headend Location
No Software Installation Required & Works with any Computer – MAC or PC –
Uses Standard Web Interface
Easy to Use Graphical Interface with Advanced Functions Like Real Time Status and
Headend Temperature Monitoring
Optional Unit Provides Back-up Power for 2 Full AQT
Racks (16 modules)
Built-in Fan Helps Air Circulation for Increased Product
Life Span
•
•
High Performance 3 Rack High Chassis Houses up to
8 AQT Modules
Specially Configured to Support Optional Custom Splitter to
Make Signal Delivery Simple
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The Blonder Tongue ATSC to QAM Transcoder (AQT) is a modular unit that receives either an 8VSB (Off-air Digital) or QAM (CATV Digital)
signal, and transcodes it to any CATV QAM channel. The transcoding enables televisions with QAM digital tuners to seamlessly view the 8VSB
Off-air digital signals on cable television frequency assignments without having to change the television tuner input from ‘CATV’ mode to
‘Off-Air’ mode. The input digital signal is stripped of it’s original digital modulation (8VSB or QAM), leaving just the basic data stream. The
AQT then creates a new, clean QAM carrier and reinserts the original data stream on to this new QAM carrier. If the original channel was
encrypted, it will remain encrypted, if the original channel was in the clear, it will remain in the clear. The only modification to the original
data stream that is performed is changing the data rate when converting an 8VSB signal to a QAM signal. This rate change is done via Null
Packet processing and does not affect the encryption in any way. The regeneration of a new, clean QAM signal is also useful for digital ‘cherrypicking’ from an existing digital channel line-up, or ‘regenerating’ a channel for optimal Modulation Error Ratio (MER) performance.
Transcode Digital 8VSB (Digital Off-Air) or Regenerate QAM (CATV Digital) Signals to QAM on Any Channel with the AQT.
DIGITAL OFF-AIR RECEPTION
CATV FEED
FROM MSO
Pre-Amp
Digital TV with
QAM Tuner
-OR-
Power Supply
and Power Inserter
6 MHz
8VSB (Digital Off-Air)
6 MHz
QAM (CATV Digital)
COAXIAL
DISTRIBUTION
NETWORK
Splitter
Internet
AQT-RCS Remote
Configuration/Management
•
•
•
•
•
Lodging Facilities
Educational, Institutional Facilities
Private Cable Operators (PCOs)
Multiple System/Service Operators (MSOs)
Any facility with CATV networks and televisions with digital tuners that will only tune QAM channels when set to CATV mode
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Digital channel processing applications including:
• ATSC/8VSB Signal Transcoding to QAM – It is common for digital televisions to only lock to QAM type signals when set or tuned to
the “CATV” mode. This creates difficulties for operators transmitting standard ATSC (“digital off-air” or “broadcast”) 8VSB signals. The
Blonder Tongue AQT solves this problem by converting an entire 8VSB (ATSC) off-air digital channel to a QAM digital signal. This new
QAM channel can be transmitted by the AQT anywhere in the CATV band permitting the current generation of digital televisions that are
integrated with QAM tuners to easily tune and display the television picture. It also eliminates the need to reprogram or switch the input
mode on the television every time a customer wants to switch between a standard digital CATV or off-air channel.
• Digital ‘Cherry Picking’ – The AQT Family of products can be used to ‘Cherry Pick’ selected digital channels from an existing CATV
QAM digital lineup and process it for redistribution. If the original CATV QAM channel was encrypted, it will remain encrypted, requiring
an authorized set-top for viewing. If the original CATV QAM channel was in the clear, it will remain in the clear, and can be viewed on any
television with a QAM digital tuner set to “CATV” mode. The AQT can also be used to ‘Cherry Pick’ and insert selected CATV QAM carriers
in to a bandwidth limited private CATV network. This is extremely valuable if a large facility only has a 450 MHz distribution network, and
the MSO’s digital offering starts at 650 MHz, there is no room for the digital tier without a costly network upgrade. The AQT can receive
the desired high frequency QAM channels and transcode them to available channels within the existing 450 MHz network, delivering the
desired CATV QAM channels, while preventing a costly network upgrade.
• QAM Regeneration – As RF signals travel through distribution networks the signals become degraded for a variety of reasons and CATV
QAM digital channels are not exempt from this degradation. The AQT Family of products can be used at a remote hub location to restore a
high quality CATV QAM digital carrier. The input CATV QAM digital signal is stripped of it’s original digital modulation (QAM), leaving just
the basic data stream. The AQT then creates a new, clean QAM carrier and reinserts the original data stream on to this new QAM carrier.
This ‘regeneration’ process creates a new, clean QAM channel with an optimal Modulation Error Ratio (MER) performance for continued
distribution to subscribers.
AQT - LCD Left/Right Variable Sequence
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Excellent =
8VSB
>30 dB
Good =
25—30 dB
Marginal =
18—25 dB
Non-Functional = <18 dB
64 QAM
>38 dB
30—38 dB
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256 QAM
>38 dB
35—38 dB
23—30 dB
30—35 dB
<23 dB
<30 dB
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AQT - LCD Loop
Display Sequence
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AQT - LCD Interactive Variable Sequence
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AQT
8VSB/QAM to QAM Transcoder Solution
• Transcodes 8VSB Off-Air Signals to QAM
• Modular Design Allows One to Eight Transcoder Modules in
a Chassis Utilizing 3 Rack Spaces
• Fully Agile Output Frequency Range of 54-864 MHz
• Back-Lit LCD Display Panel with Front Panel Accessible Push
Button Controls Provides Access to All Vital Unit Information
and Makes Set-Up and Troubleshooting A Breeze
• Design Modularity Provides the Ability to Field Replace Any
Module in the Unlikely Event of a Failure
The AQT (ATSC/QAM Transcoder Series) from
Blonder Tongue features a state-of-the-art approach
and offers top notch performance and functionality.
It incorporates a scalable modular design that
allows from one to eight transcoder module units
as well as a single combination power supply & ❍ Specifications
control module to be added, removed or swapped
at any time in the 3 rack high chassis. The AQT Off Air 8VSB/QAM Input
Series transcoder modules are compatible with off Demod Mode:
air 8VSB signals to transcode to QAM signals. It is ATSC: 8VSB or 16VSB
also well suited for regenerating or changing the ITUA: 16, 32, 64, 128, 256 QAM
ITUB: 64, 256 QAM
channel of a QAM signal.
The modules are housed in a custom designed
chassis intended to accommodate from one to
eight different modules as well as specially designed
chassis mountable splitters and combiners to make
wiring simple and painless. Control of the transcoder
units is easily accomplished with a common power
supply & control unit via operator selection from
the front panel push button controls and back-lit
LCD panel. This module interfaces to any of the
AQT transcoder modules through a simple 12-pin
connector and cable. The control module’s brain
is a flash upgradeable microprocessor to ensure
support for any future development. Support for
redundant back-up or ‘standby’ power is also
built into every AQT power & control module.
This is easily added at any time for an operator
by interfacing to the optional standby power
supply unit. In addition, the optional AQT Remote
Configuration Server provides the ability to
remotely control and monitor any of the transcoder
modules over the Internet – this makes turning off
a problem unit and reprogramming a live spare a
quick fix preventing an immediate truck roll.
• Off-Site Remote Operation and Control Including Digital
Adjustment of the QAM RF Output Level with High
Performance QCentral Computer Software or over the
Internet with Headend Web Server
• Optional Redundant/Standby Power Support Capability Built
in to Every Unit
Symbol Rate:
Variable rate QAM up to 7 Mbaud
Spectral Inversion: Auto Recognition
Carrier Suppression: 45 dB
Roll off: 12, 15, 18 %
QAM Input Range:
QAM SNR: >40 dB
54-864 MHz
MER: >40 dB
Bandwidth: 6 MHz
RF Output Impedance: 75 Ω
Symbol Rate: 1 to 6.9 Msps
Spurious: -60 dBc
Level: -20 dBmV Min. for QAM64
Broadband Noise: -75 dBc min.
-15 dBmV Min. for QAM256
(4 MHz BW @40 dBmV)
8VSB Input Range:
Phase Noise @ 10 kHz: -95 dBc min.
UHF & VHF 54-806 MHz
Frequency Stability: ± 10 kHz
Bandwidth: 6 MHz
QAM I/Q Phase Error: < 1 degree
Symbol Rate: Up to 19.4 Mbps
I/Q Amplitude Imbalance: < 1 dB
Level: -28 dBmV Min. for 8VSB
Computer Control:
-25 dBmV Min. for 16VSB
Optional Remote Configuration Server
Input Impedance: 75 Ω
QAM Output
Output Frequency Range:
Agile 54-864 MHz (CATV 2-135)
QAM Bandwidth: Variable
Frequency Step: 6 MHz
Output Level: +40 dBmV *
Display Error: ±2 dB
Level Adjustment Range: 15 dB
Modulation Mode:
16, 32, 64, 128, 256
Controls
Backlit Liquid Crystal Display (LCD)
5 Navigation/Enter Push Buttons
AQT Unit Status Indicator:
1 Green LED Per Module
Connectors
AQT-PCM Computer Control:
2 RJ11 Rear Panel RS232
Power Data: 250-pin "F" Female
AQT
Input: "F" Female
Output: "F" Female
Power/Data: 12-pin Female
Mechanical
Rack Chassis Dimensions
(W x H x D): 5.25 x 19.0 x 12 in.
133.4 x 482.6 x 304.8 mm
AQT Dimensions (W x H x D):
5.25 x 10.625 x 1.5 in.
133.4 x 269.9 x 38.1 mm
Mounting: Standard EIA Unit
Height: 5.25 x 19.0 in.
Wide Rack Mount:
133.4 x 482.6 mm
AQT Unit Weight: 1.7 lbs., 0.77 kg
Fully Loaded Chassis Weight:
28 lbs., 12.7 kg
Power
Requirement: 100 to 265 VAC
Frequency: 50 to 60 Hz
Enviromental
Operating Temperature: 0 to 50 °C
Storage Temperature: -20 to 70 °C
Humidity: 0 to 90 % RH
QAM Transcoder
Model
Stock No.
AQT
6275
AQT-PCM
6276
QTRC
6233
Accessories
QT-RFCS
6234
AQT-SPS
AQD/AQT-RCS
QTHF
HDA Series
6254
6253
6235
6240-XX
I
Description
ATSC to QAM Transcoder
AQT-Power & Control Module
QAM Transcoder Rack Chassis
QT RF Combiner and Splitter
(Contains QTRFC, 6234-1 and QTRFS, 6234-2)
AQT Standby Power Supply with Headend Fan
AQD/AQT-Remote Configuration Server
QT Headend Fan
Headend Distribution Amplifier (4 to 16 ports with 24 to 16 dB gain)
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Digital CATV (QAM) Reception - Analog Viewing (via IP)
Source
Digital
Off-Air
8VSB
Digital
CATV
QAM
Coaxial/HFC
Ethernet
Viewing Location
Analog TV
Off-Air Mode
PC Running
IPClientViewer
Functionality
Any facility that wants to utilize a digital cable television feed as a source for their analog televisions and
computers will need to convert the digital signals back to analog for the analog televisions and in to an IP stream
for their computers. This system will allow you to receive a digital (QAM) channel from the local cable company
and distribute it to: analog televisions with IP set top boxes and PCs running IPClientViewer software. The
signals are delivered via a traditional closed Ethernet distribution network, either LAN or WAN. This application
assumes that there are no coaxial or hybrid fiber/coaxial networks in the facility, and that the only available
distribution network is Ethernet.
In Depth Discussion
The method to utilizing a digital CATV signal as a source for an Ethernet network is to employ an AQD Digital
Demodulator and an IPME-2 Internet Protocol (IP) Encoder in series. The AQD Digital Demodulator is the system
component that receives the CATV digital channel and tunes to a particular program (within the channel), if
multiple programs are transmitted. The AQD Digital Demodulator provides analog, NTSC baseband audio and
video outputs to connect to the IPME-2 IP Encoder. The IPME-2 is the system component that receives the
NTSC analog, baseband audio and video signals from the Digital Demodulator and encodes them to an MPEG-2
transport stream for distribution over a properly setup LAN or WAN. This stream has ‘real time’ video quality of
30 frames per second, full screen resolution of up to 720x480, and stereo audio. It is very important to note that
the managed switches supporting the LAN or WAN MUST have the following items enabled: IGMP Snooping
Querier, IGMP Snooping, and IP Multicast. These switch features are vital to the proper operation of Video over
IP, and must be present in the managed switches for a proper user experience. Once the signals are on the IP
network, they can be utilized by either: analog televisions via industry standard IP set top boxes or PCs running
IPClientViewer software. Selecting one product from each category on the following page will insure you will
have all the necessary components for a working system.
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IPME Family of Products
•
•
•
Compact, High Performance, IP Video Encoder converts NTSC Baseband input
to an MPEG-2 data stream with DVD quality video
Encoder will support Multicast or Unicast video streams with operator-controlled
bandwidth from 1.5 to 7.5 Mbits/s for optimal network utilization
Flexible control options: RS-232 local connection, Web interface via IPME
Stream Manager, or HTTP / Telnet
Front
Rear
•
•
•
Provides Virtual Channel Map and stream information to IPClientViewer software
Allows for the remote management of up to 64 encoders with secure
administrator authorization control
Compact, modular design uses only one slot in the standard IPME Chassis
pictured below
Front
Rear
•
•
Chassis with integrated power supply uses only 1 Rack Unit
of space (1.75”)
Holds up to three Encoder Chassis or Stream Manager units
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The Blonder Tongue MPEG-2 IPTV Encoder permits the ability to stream a single audio/video program signal in MPEG-2 format
over a LAN (Local Area Network) or WAN (Wide Area Network) infrastructure. The compact and modular package facilitates easy
integration with existing or new systems. The unit transmits video in real time DVD quality at 30 fps (frames per second) and
full screen resolution of 720 x 480 or lower to conserve system bandwidth. Multicast or Unicast modes are supported. The module is designed
to work in conjunction with standards-compliant viewers for the PC such as the Blonder Tongue IPClientViewer software or a TV monitor with an
IP set top box.
•
•
•
•
Educational campuses with closed networks, Public Schools, Universities
Enterprise business environments, multi-building corporate campuses
Large facilities with deployed data networks: Hospitals, Prisons, Sports Complexes, Military Facilities
Private and commerical production studios for distribution of specialty content and programming
• Controlled distribution of video content in a business environment:
◆
CEO wants to deliver a “State of the Union” address to the company without having to assemble everyone in front of a few TVs
◆
Brokerage house wants all brokers to have desktop access to all of the major ﬁnancial and news networks without having to
install additional televisions or monitors
◆
Continuing education videos are run on a schedule during the day, and employees do not have to leave their desks to view the
materials
• Video distribution within facilities that do not have a coaxial network but do have a data network:
◆
Video production facilities that wish to share “raw” or “working” footage to the desktop
◆
Extend the reach of college/university language lab services to any PC within a closed campus network
◆
Monitoring of security cameras via the data network without the addition of a CCTV coaxial network
Status: Indicates if the IP Video Stream is
active or inactive
Ch. #: Indicates the Channel Number for
the IP Video Stream
Ch. Name: Indicates the Channel Name for
the IP Video Stream
Res.: Indicates the video resolution for the
IP Video Stream
Comments: Provides a brief description
of the IP Video Stream as entered in the
Stream Manager’s “Comment Field”
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Special attention must be taken with all switches
in the LAN/WAN to ensure the proper function of
the IP Video Streams. All switches must support the
following:
• IGMP Snooping
• IGMP Snooping Querier
• IP Multicasting e.g. Protocol Independent
Multicast (PIM)
IPME Stream Manager Configuration Section
Location: Editable field that stores the physical location of the IPME
Stream Manager
Name: Editable field that stores the name assigned to the IPME Stream
Manager
Domain: Editable field that stores the alias that allows for the logical
grouping of Channels
Date: Editable field that displays the current date in MM/DDD/YY format
Time: Editable field that displays the current time in HH:MM:SS format
Save: Saves the current IPME Stream Manager Configuration to non-volatile
memory
Encoder Configuration Section
Encoder #: Non-zero read-only field, displaying the Encoder’s sequential
index amongst the list of Encoders
<: Scrolls backward to display and/or edit the previous Encoder’s
configuration
>: Scrolls forward to display and/or edit the next Encoder’s configuration
Save: Applies and saves the current Encoder’s configuration to non-volatile
memory
Cancel: Cancels and discards any changes made to the current Encoder’s
configuration
Delete: Deletes a stored Encoder’s configuration
Add: Presents a blank Encoder configuration ready for population by the
user
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IPME
IPTV MPEG-2 Encoder
• Compact High Performance IP Video Encoder/Server
• Permits an Unlimited Number of Client Viewing Sessions
• MPEG-2 Standards Compliant with DVD Quality Video @ 30 fps
• User Controlled Bandwidth – 1.5 Mbits/s to 7.5 Mbits/s
• Easy Set-up & Configuration
❍ Specifications
IPTV Encoder
Compression: MPEG-2 Standards Compliant, RFC-1889 & RFC-2250
Minimum PC Requirements
Pentium® III 500 MHz or Higher or Equivalent Processor
Ethernet: 10BaseT Ethernet or 100BaseTX Fast Ethernet Compatible (Auto-sensing)
Bandwidth Control:
Minimum: 30 fps @ 1.5 Mbits/s, 325 x 240 Resolution
Recommended: 30 fps @ 3.8 Mbits/s, 720 x 480 Resolution
Maximum: 30 fps @ 7.5 Mbits/s, 720 x 480 Resolution
256 MB RAM
Windows® 2000 or XP, with Internet Explorer 5.5 and Direct-X 8.1 or Higher
General
Power: + 3.3 VDC, 1 AMP
Operating Temperature Range: 0° to +50° C
Streaming Modes:
Multicast or Unicast Modes, “Transport Stream over UDP” or "RTP over UDP”
Storage Temperature Range: -10° to +70° C
Multicast Sessions: Unlimited Number of Client Viewing Sessions
Humidity: 0 to 90% RH
Quality of Service:
Packet Shaping – Reduces Packet Burst and Maintains a Consistent & Controlled
Packet Rate with Minimum Latency
FEC – (Forward Error Correction) – Enables Lost Packet Reconstruction
Mechanical
Module Dimensions: 4 x 7 Inches
Chassis Dimensions: 19 x 8.25 x 1.75 Inches
Input & Output
Video Input Formats: NTSC & PAL
Module Weight: 0.8 lbs.
Front Panel Connectors
RJ-45 Ethernet, 10/100
Fully Loaded Weight: 5.125 lbs.
Chassis Weight: 2.725 lbs.
RS-232 Serial Connector
Rear Panel Connectors
Video Input ‘F’ Female Connector
Audio Input Left/Right RCA Connectors
Power Connector, 3 Pin +3.3 VDC
System Requirements
Standard MPEG-2 Encoding with TCP/IP Protocols, Images can be viewed on a PC with
BT’s IPClientViewer (MPEG Decoder) Software or an Optional IP Set-top Decoder Box
*MPEG-LA License Fee is Required
Model
Stock No.
Description
IPME-2
IPMPEG-LA
IPME-CH
2420
2412
2419
IPTV MPEG-2 Encoder
MPEG License Authority Fee (Required with each IPME-2)
IPTV Encoder Rack Chassis
2415
2411
IPTV MPEG-2 Stream Manager
Blonder Tongue Internet Protool Client Viewer
Accessories
IPME-SM
IPCV
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Digital Off-Air (8VSB) Reception Simulcast Viewing (8VSB) Digital & Analog
Source
Digital
Off-Air
8VSB
Digital
CATV
QAM
Coaxial/HFC
Viewing Location
Analog TV
Ethernet
Off-Air Mode
PC Running
IPClientViewer
Functionality
This system is designed as an example of how to deploy two of the prior individual solutions to support both
analog and digital viewing locations. The two solutions that we are referring to are Digital Off-Air (8VSB)
Reception - Digital Viewing (8VSB) (Page 8) and Digital Off-Air (8VSB) Reception - Analog Viewing (Page 12).
Please see the individual solutions for their detailed descriptions and explanations.
In Depth Discussion
The overall ideas behind this combination system are:
•
The operator/ facility is reliant on the free off-air signals
•
The operator/facility can immediately upgrade to take advantage of the signal quality improvements
offered by the digital transmission
•
The operator/facility can keep using their existing analog viewing locations by converting the digital off-air
8VSB transmission back to analog; Digital CATV (QAM) Reception - Analog Viewing
•
The operator/facility will also have the transmitted, digital off-air 8VSB signal available for the digital
televisions on the original their broadcast channel assignments (UHF or VHF); Digital Off-Air (8VSB)
Reception - Digital Viewing (8VSB)
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Digital Off-Air (8VSB) Reception Simulcast Viewing (QAM) Digital & Analog
Source
Digital
Off-Air
8VSB
Digital
CATV
QAM
Coaxial/HFC
Viewing Location
Analog TV
Ethernet
Off-Air Mode
PC Running
IPClientViewer
Functionality
This system is designed as an example of how to deploy two of the prior individual solutions to support both
analog and digital viewing locations. The two solutions that we are referring to are Digital Off-Air (8VSB)
Reception - Analog Viewing (Page 12) and Digital Off-Air (8VSB) Reception - Digital Viewing (QAM) (Page 22).
Please see the individual solutions for their detailed functionality descriptions and in depth explanations.
In Depth Discussion
The overall ideas behind this combination system are:
•
The operator/ facility is utilizing the free off-air signals and wants their digital televisions to only tune to
CATV channel assignments
•
The operator/facility can immediately upgrade to take advantage of the signal quality improvements
offered by the digital off-air 8VSB transmission
•
The operator/facility can keep using their existing analog viewing locations by converting the digital offair 8VSB transmission back to analog; Digital Off-Air (8VSB) Reception - Analog Viewing
•
The operator/facility will also have the digital off-air 8VSB signal transcoded to QAM for the digital
televisions set in “CATV Mode” and tuning CATV channel assignments; Digital Off-Air (8VSB) Reception
- Digital Viewing (QAM)
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One Jake Brown Road
Old Bridge, NJ 08857-1000 USA
(800) 523-6049 • FAX: (732) 679-4353

Digital Transition Survival Guide from Blonder

Transcription

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