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Extron’s Twisted Pair Transmitters and

Receivers Solve Connection Challenges

Long Distance Transmission of A/V Signals Over

Twisted Pair Cabling

pplication: you have an A/V system to install. You’re down to one

last decision: cables. What do you do if you have to hide a bundle

of coaxial cable because of your client’s sense of aesthetics? Or what if the

building’s facilities manager only wants shielded or unshielded twisted

pair (STP or UTP) cable to be used, like Category 5 (CAT 5), 5e, or 6? Or

what if the university already has CAT 5 cable wired throughout its newly

purchased property and wants to use the existing cable infrastructure?

continued on page 2

...Of course, you are interested

in maintaining picture quality.

Sometimes the considerations

and environment you’re working

with preclude the use of coaxial

cable, or an alternative is

requested. One alternative—a

growing trend, in fact—is the use

of UTP cabling to carry high

resolution analog video signals.

UTP cable is normally associated

with digital signal distribution and

low resolution composite video.

UTP technology has characteristics

that are advantages or

disadvantages depending on the

specifics of the application.

www.extron.com

FEATURE ARTICLE

On the cover...

Extron’s Twisted Pair

Transmitters and Receivers

COLUMNS

4 Marketing Matters:

Improve Your Image

5 The Extron Hotline:

E-Demos: Training Tools at Your

Fingertips

6 Technically Speaking...

Getting the Most from SDI

10 Rental & Staging Corner:

CVEQ1 Gets the Line Driving Job

Done—Discreetly

12 Unique Techniques:

“Future Proofing” AT&T with A/V

22 Tech Corner:

UTP Technology

ALSO IN THIS ISSUE

15 New Products

20 Special Videoconferencing

Series

24 New News

28 Tweeker Use

UTP cable is a viable alternative

in many scenarios:

• In a corporate boardroom,

there is a long cable run between

the A/V rack and a ceiling-mounted

projector with built-in speakers. The

cable needs to be lightweight so it

can be discreetly hidden within the

boardroom’s decor.

• Your client

company is located

on two floors of an office building.

The building’s facilities manager

mandates the use of only UTP

cabling in all common areas, so you

are required to use UTP for the new

company-wide, A/V system.

Issue 12.2 March • April 2001

Extron Twisted

Pair transmitters

and receivers

Summary of content (28 pages)

PAGE 1
www.extron.com Issue 12.2 March • April 2001 Extron’s Twisted Pair Transmitters and Receivers Solve Connection Challenges Long Distance Transmission of A/V Signals Over Twisted Pair Cabling Extron Twisted Pair transmitters and receivers FEATURE ARTICLE On the cover... Extron’s Twisted Pair Transmitters and Receivers COLUMNS 4 Marketing Matters: Improve Your Image 5 The Extron Hotline: E-Demos: Training Tools at Your Fingertips 6 Technically Speaking...
PAGE 2
Extron’s Product Line of Twisted Pair Transmitters & Receivers CAT 5 T AV CAT 5 Video and Audio Transmitter Extron’s CAT 5 T AV accepts NTSC/PAL composite video with stereo audio. CAT 5 T 15HD A CAT 5 Interface Transmitter Transmitters Extron’s CAT 5 T 15HD A accepts analog computer video with PC audio. CAT 5 T 15HD AV CAT 5 Interface/ Composite Video and Audio Transmitter Extron’s CAT 5 T 15HD AV accepts analog computer video with PC audio as well as NTSC/PAL composite video with stereo audio.
PAGE 3
component video, S-video, composite video, and stereo audio using Category 5, 5e, or 6 UTP or STP cable. They use exclusive, proprietary technology developed by Extron to transmit signals up to 1,000 ft. depending on signal frequency and cable quality—640 x 480 video up to 1,000 ft. (305 m) or 1600 x 1280 video up to 200 ft. (61 m). Extron’s UTP products allow A/V system designers and installers to provide reliable, professional-quality signal transmission while gaining the benefits of using UTP cabling.
PAGE 4
MARKETING MATTERS by Lee Dodson, Vice President of Marketing Improve Your Image T he best way for potential customers to judge the quality of work you are capable of delivering is to show them examples of it. The solution is simple: just take the hand of the next customer who comes through your door Application Stories and take them to see your best installations. Simple, right? 4 O.K., hauling them around the state or country to see your work is not always convenient or practical.
PAGE 5
THE EXTRON HOTLINE by Jeff Gibson, Vice President of Sales E-Demos: Training Tools at Your Fingertips W hen I try to describe to people who aren’t in the A/V industry what kinds of products Extron manufactures, I sometimes get blank stares in return. While most people have experienced professional audio/visual environments in sports bars, conference rooms, classrooms, or churches, few understand what goes on behind the scenes to make everything work.
PAGE 6
T E C H N I C A L LY SPEAKING... by Steve Somers, Vice President of Engineering Getting the Most from SDI S DI does NOT stand for “Short Distance Interface.” But, a serial digital interface run can revert to that status if some basic rules are not followed. The Serial Digital Interface-SDI (SMPTE 259M) grew out of the need for longer distance connection of component digital television equipment, the result being the viability of a truly digital broadcast station.
PAGE 7
T E C H N I C A L LY because the receiver takes one phase of the data transmission, inverts it, and then adds it to the in-phase portion. Like a regular analog differential amplifier, common mode noise induced into the signal is cancelled out during this inversion and addition operation. Figure 2. Standard reference level SDI signal conforming to SMPTE 259M of cables. Having all data bits organized as one stream means there will be no issues with clock and data synchronization.
PAGE 8
T E C H N I C A L LY fails, ungracefully. For this reason, allow at least 10% margin in your cable length calculations to account for other connection changes, connector resistances, connector and termination reflections, etc. Most precalculated cable charts build in this allowance just for good practice. See Table 2 for calculated cable lengths for Extron cables.
PAGE 9
T E C H N I C A L LY millivolts peak-to-peak, it is not much different in level than standard video signals. SDI is uni-directional and has a good signalto-noise recovery budget. So, with care, smaller, local routing systems can work on a budget without re-clocking. Got The Jitters? Signal jitter is another culprit in SDI systems.
PAGE 10
RENTAL & STAGING CORNER CVEQ1 Gets the Line Driving Job Done— Discreetly T he CVEQ1 is a one input, one output, composite video and stereo audio line driver with variable video gain and equalization capability. The CVEQ1 is designed to compensate for signal attenuation and high frequency loss encountered during a long cable run.
PAGE 11
RENTAL would occur at a concert hall, where a stage camera's output is sent over a long distance to a projector on the ceiling of the concert hall. The CVEQ1 is also ideal for large venues when one video switcher feeds multiple devices. When an application involves multiple composite video signals being run a variety of distances, individual signal adjustments are required to deliver signals of equivalent signal strength to each display.
PAGE 12
UNIQUE TECHNIQUES “Future Proofing” AT&T with A/V I n January of 1998, AT&T announced plans to build a state-of-the-art Global Network Operations Center (GNOC) in Bedminster, New Jersey. The international communications company stated that its objective for Extron SS 200 (Sync Stabilizer) building the new facility was to “future proof” its network.
PAGE 13
UNIQUE TECHNIQUES contracted technology consultant firm Shen Milsom & Wilke. World-Class A/V at the GNOC The hub of the GNOC is the Operations Theater—a top-notch command and control center. Located 60 feet below ground on the floor of a three and a half story atrium, the Operations Theater is built on a gentle, 180 degree arc. (See Image 1.) Thirty-five control consoles face a wall of 141 rear projection screens stacked three high and 47 across.
PAGE 14
UNIQUE TECHNIQUES AT & T w i t h A / V ( c o n t . ) make it all work. Huge amounts of cable influenced the install in two main ways: cost and weight. “Keeping in mind that we were dealing with 200 inputs and 200 outputs, cable cost was a significant issue due to the size of the switch,” explains Steve Emspak, Principal with Shen Milsom & Wilke, who worked extensively on the project.
PAGE 15
NEW RGB 160xi Universal Mountable Interface with Female 15-pin HD Input, Audio, and ADSP™ RGB 168xi Universal Mountable Interface with Female 15-pin HD Input, Audio, ADSP, and Optional Architectural Adapter Plates RGB 560 Architectural Universal Mountable Interface with Female 15-pin HD Input, Audio, and ADSP Front Back PRODUCTS Replacing the RGB 150xi is the Extron RGB 160xi with ADSP. It is a universal, analog computer-video interface with a female 15-pin HD input and buffered local monitor output.
PAGE 16
NEW PRODUCTS RGB 568 Architectural Universal Mountable Interface with Female 15-pin HD Input, Audio, ADSP, and Optional Architectural Adapter Plates RGB 560 AKM Universal Interface with Audio Interfacing, ADSP, and Female 15-pin HD Input for Ackermann Floor Boxes Ackermann Floor Box MIN/MAX H. SHIFT RGB 11 ID PIN 4 ID PIN OUT with ADSP LOCAL 558 AKM TM RGB 560 AKM FROM EXTRON Replacing the RGB 558 is the Extron RGB 568 with ADSP.
PAGE 17
NEW SW2 VGA DA2 AF R Two Input, Two Output VGA and Audio Switcher/ Distribution Amplifier Hideaway HSA 400 Discreet Access to System Connection Closed RGB 580xi Architectural Universal Mountable Remote Interface with Audio Interfacing and ADSP for Out-of-Sight Installations RGB 580xi PRODUCTS The Extron SW2 VGA DA2 AF R is a combination two input, two output switcher/distribution amplifier. One 15-pin HD female connector and a 3.5 mm female audio jack connector are located on the front panel.
PAGE 18
NEW PRODUCTS Digital XPoint Series Serial Digital Video Matrix Switchers DXP 88 SDI FROM EXTRON The Digital XPoint Matrix Switcher Series is the ideal solution for switching multiple serial digital video signals to multiple digital video devices in video production studios, nonlinear editing suites, and video broadcast studios. Currently, there are two models available in the Digital XPoint line: an 8 x 8 model (DXP 88 SDI) and a 4 x 4 model (DXP 44 SDI).
PAGE 19
NEW Extender WM, Extender AAP, Extender WM AAP, and Extender MK VGA-UXGA Line Drivers with Audio Extender WM Extender AAP Extender WM AAP Extender MK (Includes black & white faceplates) PRODUCTS The Extron Extender product line is a family of one input, one buffered output VGA-UXGA line drivers with audio. The Extender family is comprised of four models: Extender WM, Extender AAP, Extender WM AAP, and Extender MK.
PAGE 20
SPECIAL VIDEOCONFERENCING SERIES Part 3: Multiple Scenarios for a Videoconferencing Environment W e set the stage for a standard videoconference in our last two issues. First, we put together a basic setup plus a computer-to-video scan converter for incorporating PC images. Then we added a little complexity and flexibility by incorporating a multi video processor, so multiple sources can be simultaneously displayed to far-end participants.
PAGE 21
SPECIAL VIDEOCONFERENCING Projection Room Projection Room SERIES Extron Matrix 6400 Switcher Computer-based Training Room +5V (PIN 13) N/C 1N916 Tally Pin External Power Jill you're zoomed Illustration by illustrator in too close! Tally ho! guy Classroom Theater VC Camera EAST ST. BLVD. 5 STATE COLLEGE BLVD. ANAHEIM LINCOLN AV. ANAHEIM Look at one of the optional mounting kits. 57 BALL RD. WEST ST. Extron DOUGLAS RD. LEWIS ST. CERRITOS AV. Disneyland HASTER ST. KATELLA AV.
PAGE 22
TECH CORNER UTP Technology E xtron recently developed a white paper on UTP to provide a better understanding of UTP technology and installation and test issues. This can be found on our Web site at http://www.extron.com/utptechnology. The following is a condensed version of the UTP white paper. One problem with twisted pair wire is electromagnetic emissions at high frequencies. These emissions can couple into adjacent twisted pairs.
PAGE 23
TECH Wiremap Test The Wiremap Test is used to identify installation-wiring errors: • Proper pin termination at each end • Continuity to the remote end • Shorts between any two or more conductors • Crossed pairs • Split pairs • Reversed pairs • Any other mis-wiring. Attenuation Test The loss of signal strength (or voltage) in the cable is called attenuation. The more attenuation there is, the less signal there will be present at the receiver. The attenuation is measured in decibels (dB).
PAGE 24
NEW NEWS FROM THE INDUSTRY ExtroNews publishes information about new products that are relative to the Extron product line in the New News section. Also listed are the recommended Extron products that will complement these new display devices in their targeted applications.
PAGE 25
NEW NEWS FROM THE INDUSTRY NEC Technologies Inc. www.nectech.com Sharp Electronics Corp. www.sharp.com Sony Electronics www.sony.com NEC Technologies Inc. announces the availability of the PlasmaSync 50MP1 for applications such as conference room and board room presentations; training and broadcast facilities; and videoconference suites. The 50-inch XGA plasma offers 1365 x 786 resolution and can display sources up to UXGA.
PAGE 26
Introducing New Curriculum from Extron Institute For five years, A/V professionals have been sharpening their industry knowledge through classes conducted by Extron Electronics. To keep you ahead of the rapid pace of change sweeping over this industry, we recently updated the Extron School curriculum and restructured school courses under a new organization—The Extron Institute. The Extron Institute takes Extron School curriculum to a higher level.
PAGE 27
LCD displays • I/O configurations • Input carrier detection • Matrix status Large tactile illuminated buttons Data rates up to 360 Mb/s SMPTE 259M compliant 16 presets 2 levels of controls RS-232 or RS-422 control Remote control panel Internal international power supply Automatic cable equalization 8 inputs with equalized & buffered loop-throughs DXP 88 SDI 8 outputs on dual buffered & re-clocked BNCs External reference DIGITAL XPOINT Extron Matrix Switchers Go Digital ® Introducing Digital X
PAGE 28
Fishing Lure Ken Carruth with American Electronics in Baton Rouge, is an avid sport fisherman. He has a special lure he designed that’s almost guaranteed to land a big one. Next time you’re reaching into your tackle box, instead of grabbing a Mister Twister ®, try out Ken’s Creeker Tweeker! Send us your photograph of how you use the Tweeker. If we publish it in a future issue of ExtroNews, we’ll give you a free VTG 150.