Black Box IC441A-R2 Manuale utente

CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.S.: Call 877-877-BBOX (o tside U.S. call 724-746-5500)

FREE technical s pport 24 ho rs a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746

Mailing address: Bla k Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

Web site: www.bla kbox. om • E-mail: info@bla kbox. om

JUNE 2002

IC441A-R2

Video Stereo Audio Baluns

VIDEO

PAIR 4

(7 & 8)

AUDIO(L)

PAIR 2

(3 & 6)

AUDIO(R)

PAIR 3

(1 & 2)

Video S ereo

Audio Balun

FCC/IC RFI STATEMENTS, TRADEMARKS

FEDERAL COMMUNICATIONS COMMISSION AND INDUSTRY CANADA

RADIO-FREQUENCY INTERFERENCE STATEMENTS

Class B Digital Device. This equipment has been tested and found to comply with the

limits for a Class B computing device pursuant to Part 15 of the FCC Rules. These

limits are designed to provide reasonable protection against harmful interference

in a residential installation. This equipment generates, uses, and can radiate radio

frequency energy and, if not installed and used in accordance with the

instructions, may cause harmful interference to radio communications. However,

there is no guarantee that interference will not occur in a particular installation. If

this equipment does cause harmful interference to radio or telephone reception,

which can be determined by turning the equipment off and on, the user is

encouraged to try to correct the interference by one of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which

the receiver is connected.

• Consult an experienced radio/TV technician for help.

Caution: Changes or modifications not expressly approved by the party responsible

for compliance could void the user’s authority to operate the equipment.

To meet FCC requirements, shielded cables are required to connect this device to

other Class B certified devices.

This digital apparatus does not exceed the Class B limits for radio noise emission from digital

apparatus set out in the Radio Interference Regulation of Industry Canada.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites

applicables aux appareils numériques de classe B prescrites dans le Règlement sur le brouillage

radioélectrique publié par Industrie Canada.

TRADEMARKS USED IN THIS MANUAL

BLACK BOX and the logo are registered trademarks of Black Box

Corporation.

VELCRO®is a registered trademark of Velcro USA Inc.

Any other trademarks mentioned in this manual are acknowledged to be the property of the

trademark owners.

VIDEO STEREO AUDIO BALUNS

NORMAS OFICIALES MEXICANAS (NOM)

ELECTRICAL SAFETY STATEMENT

INSTRUCCIONES DE SEGURIDAD

1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de

que el aparato eléctrico sea operado.

2. Las instrucciones de seguridad y operación deberán ser guardadas para

referencia futura.

3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de

operación deben ser respetadas.

4. Todas las instrucciones de operación y uso deben ser seguidas.

5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca

de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc..

6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que

sean recomendados por el fabricante.

7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea

recomendado por el fabricante.

8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá

a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser

referido a personal de servicio calificado.

9. El aparato eléctrico debe ser situado de tal manera que su posición no

interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,

alfombra o superficie similar puede bloquea la ventilación, no se debe colocar

en libreros o gabinetes que impidan el flujo de aire por los orificios de

ventilación.

10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor

como radiadores, registros de calor, estufas u otros aparatos (incluyendo

amplificadores) que producen calor.

11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del

tipo descrito en el instructivo de operación, o como se indique en el aparato.

NOM STATEMENT

12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización

del equipo no sea eliminada.

13. Los cables de la fuente de poder deben ser guiados de tal manera que no

sean pisados ni pellizcados por objetos colocados sobre o contra ellos,

poniendo particular atención a los contactos y receptáculos donde salen del

aparato.

14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las

recomendaciones del fabricante.

15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas

de energia.

16. El cable de corriente deberá ser desconectado del cuando el equipo no sea

usado por un largo periodo de tiempo.

17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean

derramados sobre la cubierta u orificios de ventilación.

18. Servicio por personal calificado deberá ser provisto cuando:

A: El cable de poder o el contacto ha sido dañado; u

B: Objectos han caído o líquido ha sido derramado dentro del aparato; o

C: El aparato ha sido expuesto a la lluvia; o

D: El aparato parece no operar normalmente o muestra un cambio en su

desempeño; o

E: El aparato ha sido tirado o su cubierta ha sido dañada.

VIDEO STEREO AUDIO BALUNS

Contents

Chapter Page

1. Specifications ............................................................................................. 5

2. Introduction ............................................................................................... 7

3. Installation .................................................................................................. 8

4. Troubleshooting ...................................................................................... 10

4.1 Things to Try If Problems Occur ..................................................... 10

4.2 Calling Black Box .............................................................................. 11

4.3 Shipping and Packaging ................................................................... 11

CHAPTER 1: Specifications

1. Specifications

Cable Required: Between Balun pairs: Unshielded twisted pair (UTP):

Construction Standard: Category 3 or higher;

Gauge: 24 AWG or lower;

Termination: RJ-45 plugs;

Pairs: 3 or more (6 wires used) to carry all video and audio

channels;

Impedance: 100 ohms at 1 MHz;

Maximum Capacitance: 20 pF/ft. (6.1 pF/m);

Maximum Attenuation: 6.6 dB/1000 ft. (2 dB/km);

To attached devices:

Video: (1) Standard 75-ohm RG59/U coaxial cable with a

BNC male connector on the Balun end, preferably the

cable supplied with the Balun;

Audio: (2) Standard RCA phono cables

Compliance: FCC Class B, IC Class/classe B;

CISPR Pub. 22 Class B

Standard: Composite (baseband) video: NTSC, PAL, or SECAM

Impedance: Coaxial side: 75 ohms;

Phono side: 600 ohms;

UTP side: 100 ohms

Bandwidth: Video: DC to 8 MHz;

Audio: 20 Hz to 50 kHz

Maximum RF

Input: 1.1 volts at 60 Hz

Insertion Loss: Less than 2 dB over the DC-to-8-MHz frequency range

Return Loss: Greater than 15 dB over the DC-to-8-MHz frequency range

Common-Mode

Rejection: Greater than 40 dB at 8 MHz

VIDEO STEREO AUDIO BALUNS

Maximum

Distance: With Category 3 cable: 1200 ft. (365.8 m) for color video,

1500 ft. (457.2 m) for black & white video;

With Category 5 cable: 2200 ft. (670.6 m) for color video,

2500 ft. (762 m) for black & white video

Connectors: (1) RJ-45 female, (1) BNC female, and (2) RCA female

RJ-45 Pins Used: Pins 1 (audio right), 2 (audio right ground), 3 (audio left),

6 (audio left ground), 7 (video), 8 (video ground)

Temperature

Tolerance: Operating: 32 to 131˚F (0 to 55˚C);

Storage: -4 to +185˚F (-20 to +85˚C)

Humidity

Tolerance: Up to 95% noncondensing

Enclosure: Fire-retardant plastic with included optional VELCRO®

mounting material

Size: 2.3"H x 2.4"W x 1"D (5.8 x 6.1 x 2.5 cm)

Weight: With included cable: 4 oz. (113 g);

Without included cable: 2.8 oz. (79 g)

CHAPTER 2: Introduction

2. Introduction

With the Video Stereo Audio Balun, you can transmit composite baseband video

and audio signals across Category 3 or better unshielded twisted-pair (UTP) cable,

which is already wired into most commercial sites. Use pairs of Baluns to transmit

standard NTSC, PAL, or SECAM composite video with stereo audio: The Balun

near the media source takes a single composite baseband video signal from 75-ohm

coaxial cable, as well as left and right audio signals from two 600-ohm phono

cables, converts the signals, and transmits them over UTP cable to the other Balun,

which converts them back and sends them to their destination.

Connect the Video Stereo Audio Balun to a site’s structured cabling through

a modular wall jack in the work area. Each Balun has a BNC connector and two

RCA connectors at one end and an RJ-45 jack at the other end.

The Video Stereo Audio Balun is designed for use with CCTV cameras and

monitors, video-cassette recorders (NTSC, PAL, or SECAM), videoconferencing,

and other baseband audiovisual equipment. Applications include: security/

surveillance monitoring, video bulletin boards, financial information services,

news services, education, video training, airport displays, video capture, and

informational displays in stock exchanges, hotels, and convention centers.

VIDEO STEREO AUDIO BALUNS

3. Installation

To install a pair of Video Stereo Audio Baluns, take these steps:

CAUTION!

Do no a emp o open he housing. There are no user-serviceable par s

inside he Video S ereo Audio Balun. Opening he uni will void your

warran y.

1. Make sure that the video-destination device is not too far away from the

media-source device(s) (refer to the Maximum Distance specification in

Chapter 1). If the destination device is beyond the reach of the source Balun,

the signals the device receives will be weak or nonexistent.

2. Follow the manufacturer’s instructions for turning off power to the video and

audio equipment you will be attaching, and disconnecting that equipment

from AC power and from all other devices.

3. Make certain that the telecommunications outlets and cross-connects to

which you will connect the Baluns are configured properly and are labeled

so that the circuit can be identified.

CAUTION!

Do not connec he Video S ereo Audio Balun o a elecommunica ion

ou le wired o unrela ed equipmen . Making such a connec ion may

damage he equipmen and/or he Balun. Make sure ha all wiring is

s raigh - hrough-pinned.

4. Verify that the twisted-pair circuit you want to use is not already being used

for other LAN or telephone equipment.

5. Optional: Each Balun comes with VELCRO®mounting pads. To mount a

Balun to a surface, first make sure that that surface is free of dust, oil, etc.,

so the VELCRO will adhere to it. Then peel off the adhesive backing, attach

one side of the pads to the Balun, and attach the other side to the surface.

CAUTION!

Do not moun he Balun over equipmen -ven ila ion openings. Doing so

migh damage he Balun or cause he equipmen o overhea .

6. For each Balun—depending on what type of video equipment you are

attaching it to—plug its BNC female connector either directly into the

device’s BNC male connector, or into the BNC male connector of a cable that

runs to the device, such as the cable included with the Balun. You can also

run phono cables from your audio source(s) and plug them into the Balun’s

CHAPTER 3: Installation

RCA phono jacks; you can use one or both of the audio channels,

as appropriate for your application. Refer to Figure 3-1.

Figure 3-1. The Balun and its connectors.

7. Connect one end of a UTP cable into each Balun’s RJ-45 modular jack.

To carry the video signal, these cables must carry a wire pair pinned to

RJ-45 Pins 7 and 8. To carry the left audio signal, the cables must carry

a pair pinned to Pins 3 and 6. To carry the right audio signal, the cables

must carry a pair pinned to Pins 1 and 2.

8. Plug the other end of each UTP cable into the appropriate video wall outlet

or patch panel. When this is done, a complete cabling circuit should run

between the two baluns, as shown in Figure 3-2.

Figure 3-2. Two Baluns cabled together.

9. Reconnect and power up the video and audio equipment.

Your Video Stereo Audio Balun system should be ready for continuous operation.

VIDEO

PAIR 4

(7 & 8)

AUDIO(R)

PAIR 3

(1 & 2)

AUDIO(L)

PAIR 2

(3 & 6)

Video S ereo

Audio Balun

VIDEO

PAIR 4

(7 & 8)

AUDIO(R)

PAIR 3

(1 & 2)

AUDIO(L)

PAIR 2

(3 & 6)

Video S ereo

Audio Balun

VIDEO

PAIR 4

(7 & 8)

AUDIO(R)

PAIR 3

(1 & 2)

AUDIO(L)

PAIR 2

(3 & 6)

Video S ereo

Audio Balun

RJ-45 for UTP

Ca egory 3 or

higher UTP

Indice

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