Black Box IC448A Manuale utente

CUSTOMER

SUPPORT

INFORMATION

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

FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746

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

Web site: www.blackbox.com • E-mail: [email protected]

DECEMBER 2002

IC448A

Video CATV 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.

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

trademark owners.

VIDEO CATV BALUN

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 CATV BALUN

Contents

Chapter Page

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

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

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

4. Application Tips ....................................................................................... 10

5. Troubleshooting ...................................................................................... 12

5.1 Things to Try If Problems Occur ..................................................... 12

5.2 Calling Black Box .............................................................................. 13

5.3 Shipping and Packaging ................................................................... 13

CHAPTER 1: Specifications

1. Specifications

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

Construction standard: Category 5;

Gauge: 24 AWG or lower;

Core: Solid;

Termination: RJ-45 plugs;

Pairs: 1 or more (2 wires used);

Impedance: 100 to 120 ohms;

To attached devices: Balun normally attaches directly to

equipment; if cable must be used, it must be standard RG6

or RG11 coaxial cable, 75 ohms at 1 MHz, with a BNC

female connector on the balun end

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

CISPR Pub. 22 Class B

Transmission: Transparent to users (automatic, no delay)

Signal Types: Broadband cable TV (CATV), VHF, FM

Frequencies

(Channels): CATV 2 to 61, VHF 2 to 13, entire FM broadcast band

Bandwidth: 5 to 550 MHz

Insertion Loss: Less than 3 dB for cable channels 2 through 77

Return Loss: -18 dB or higher over the 10-MHz-to-550-MHz range

Common-Mode

Rejection: -20 dB or higher over the 40-MHz-to-500-MHz range

Maximum

Distance: At least 165 ft. (50 m) of CAT5 cable if nominal input is

approximately 15 dBm; up to 330 ft. (100 m) depending

on frequency (channel)—CATV channel 2 and other low

frequencies should work at that distance, but higher

frequencies might require a tilt amplifier

Connectors: (1) RJ-45 female, (1) BNC “F” male

RJ-45 Pins Used: 7 (Ring) and 8 (Tip); polarity-sensitive (not autosensing or

autocorrecting)

VIDEO CATV BALUN

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: EMI-shielded ABS plastic

Size: 1"H x 1"W x 2.5"D (2.5 x 2.5 x 6.4 cm)

Weight: 1 oz. (28 g)

CHAPTER 2: Introduction

2. Introduction

With pairs of Video CATV Baluns, you can transmit broadband cable TV (CATV),

VHF TV, or FM radio signals across Category 5 unshielded twisted-pair (UTP)

cable, which is already wired into most commercial sites. The balun near the video

source takes a single CATV or other signal from 75-ohm coaxial cable, converts it,

and transmits it over UTP cable to the other balun, which puts it back on coax and

sends it to its destination. This lets you place or move your CATV equipment

anywhere you have a modular wall outlet.

The Video CATV Balun is designed for use with modular equipment and flexible

configurations. Compatible devices include TV monitors, CATV splitters,

amplifiers, cable modems, videocassette recorders, radio tuners, and other

broadband video and radio equipment, but the typical application is connecting a

CATV splitter or amplifier to a TV monitor. (Note that although the baluns are

designed for point-to-point connections only, you can use separate pairs of baluns

to extend multipoint output from CATV splitters, etc.) The baluns are ideal for the

type of broadband video systems used by schools, government or corporate offices,

hospitals, financial institutions, hotels, and convention centers.

These baluns must be used in pairs.

VIDEO CATV BALUN

3. Installation

To install a pair of Video CATV Baluns, follow the steps below.

CAUTION!

Do not attempt to open the housings of the Video CATV Baluns. There

are no user-serviceable parts inside.

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

device (refer to the Maximum Distance specification in Chapter 1). If the

destination device is beyond the reach of the source balun, the signal the

device receives will be weak or nonexistent.

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

equipment you will be attaching, and for disconnecting that equipment from

AC power and from all other devices.

3. Make certain that the modular 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 connect the Video CATV Video Balun to a telecommunication

outlet wired to unrelated equipment. Making such a connection may

damage the equipment and/or the balun. Make sure that all wiring is

straight-through-pinned.

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

for other LAN or telephone equipment.

5. For each balun—depending on what type of equipment you are attaching it

to—either plug its BNC male connector directly into the device’s BNC female

connector, or plug the balun into a cable that runs to the device (this cable

must have a BNC female connector on the balun end).

6. Connect one end of a UTP cable to each balun’s RJ-45 modular jack, as

shown in Figure 3-1. These cables must carry at least one wire pair; these wires

must be on RJ-45 Pins 7 (ring) and 8 (tip).

Figure 3-1. Attaching UTP cable to the balun.

CHAPTER 3: Installation

7. Plug the other end of each UTP cable into the appropriate modular wall

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

run between the two baluns, as shown in Figures 3-2 and 3-3.

Figure 3-2. Baluns cabled together for video distribution (not to scale).

Figure 3-3. Baluns cabled together for cable-modem extension (not to scale).

8. Reconnect and power up the source and destination equipment.

Your balun system should be ready for continuous operation.

Category 5 UTP

Video CATV

Baluns

Video CATV

Baluns

Video CATV

Balun

Wall outlet

with coax

“F” connector Video CATV

Balun

Cable

modem LAN

cable

CATV

splitter

Tilt

amplifier

75-ohm

coax

CATV

feed

CATV

feed

TV monitors

Indice

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