Black Box MicroConverter G.703 Manuale utente

MAY 2001

MT255A-M

MT256A-F

MT257A

G.703 Adapters and

Balun Mate II

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]

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FCC/IC RFI STATEMENTS

FEDERAL COMMUNICATIONS COMMISSION AND

INDUSTRY CANADA

RADIO-FREQUENCY INTERFERENCE STATEMENTS

This equipment generates, uses, and can radiate radio-frequency energy,

and if not installed and used properly, that is, in strict accordance with the

manufacturer’s instructions, might cause interference to radio communication.

It has been tested and found to comply with the limits for a Class A computing

device in accordance with the specifications in Subpart J of Part 15 of FCC rules,

which are designed to provide reasonable protection against such interference

when the equipment is operated in a commercial environment. Operation of

this equipment in a residential area is likely to cause interference, in which case

the user at his own expense will be required to take whatever measures may be

necessary to correct the interference.

Changes or modifications not expressly approved by the party responsible

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

This digital apparatus does not exceed the Class A 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 A prescrites dans le Règlement sur le

brouillage radioélectrique publié par Industrie Canada.

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G.703 ADAPTERS AND BALUN MATE II

EUROPEAN UNION DECLARATION OF CONFORMITY

The manufacturer declares that this equipment complies with the

requirements of the EMC Directive 89/336/EEC, as well as the Low Voltage

Directive (LVD).

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NOM STATEMENT

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.

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G.703 ADAPTERS AND BALUN MATE II

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.

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.

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TABLE OF CONTENTS

Contents

Chapter Page

1. Specifications .............................................................. 6

2. Introduction ............................................................... 8

3. Configuration ........................................................... 12

4. Installation and Operation ...................................... 15

5. Troubleshooting ....................................................... 17

5.1 Calling Black Box .............................................. 17

5.2 Shipping and Packaging ................................... 18

Appendix: Block Diagram .............................................. 19

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G.703 ADAPTERS AND BALUN MATE II

1. Specifications

Compliance: CE, FCC Part 15 Subpart J Class A, IC Class/

classe A

Interfaces: ITU CTR-12 G.703 (unstructured):

Coaxial: Unbalanced 75-ohm (RG-59 or 2002 cable);

Twisted-pair: Balanced 120-ohm (shielded or unshielded

cable)

Data Rate: Up to 2.048 Mbps (E1)

User Controls: Internal jumpers for shield connection or

disconnection:

MT255A-M, MT256A-F: (2);

MT257A: (2) for each of the (16) port-card modules

Indicators: None

Connectors:

Coaxial: Dual 1.6/5.6-mm:

MT255A-M: (1) Male (on 6" [15.2 cm] cable pigtails);

MT256A-F: (1) Female;

MT257A: (16) Female (one on each module);

Twisted-pair: Shielded RJ-45 female:

MT255A-M, MT256A-F: (1);

MT257A: (16), one on each module

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CHAPTER 1: Specifications

Isolation: 500 volts AC/DC between coax and twisted-pair

sides

Temperature Tolerance: 32 to 122˚F (0 to 50˚C)

Humidity Tolerance: 5 to 95% noncondensing

Power: From interfaces

Size:

MT255A-M (excluding cable pigtails), MT256A-F:

2.7"H x 1.7"W x 0.8"D (6.9 x 4.3 x 2 cm);

MT257A:

Rack chassis: 3.5"H x 19"W x 1.9"D

(8.9 x 48.3 x 4.8 cm);

Individual port-card modules: 3.4"H x 1"W x 1.75"D

(8.6 x 2.5 x 4.4 cm)

Weight:

MT255A-M: 2.7 oz. (77 g);

MT256A-F: 1.4 oz. (41 g);

MT257A:

Rack chassis: 2.6 lb. (1.2 kg);

Individual port-card modules: 0.4 oz. (10 g)

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G.703 ADAPTERS AND BALUN MATE II

2. Introduction

The G.703 Adapters and the Balun Mate II enable

75-ohm coaxial G.703 equipment/networks to

communicate with 120-ohm twisted-pair G.703

equipment/networks. They’re specifically designed to

address the Open Network Provision (ONP)

requirement that European PTTs offer 120-ohm twisted-

pair terminations to their customers. Some PTTs and

private carriers had standardized on 75-ohm coax, or

have customers whose CPE has only 75-ohm

connections. The Adapters and the Balun Mate II help

solve this termination mismatch by converting 75-ohm

signals to 120-ohm signals and vice versa, at data rates up

to full E1 speed (2.048 Mbps).

The MT255A-M model of the G.703 Adapter has a

pair of 6" (15.2-cm) coaxial pigtails with male

connectors that can plug into the female coaxial

connectors of an existing device or termination.

The MT256A-F model of the G.703 Adapter has a pair

of female coaxial connectors that existing coaxial cables

can be plugged into.

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CHAPTER 2: Introduction

The Balun Mate II (MT257A) is designed to be

mounted in a 19" rack. It contains sixteen individual

port-card modules, each of which has a pair of female

coaxial connectors for existing cables.

The coaxial connectors on all of these models are the

1.6/5.6-mm types used extensively in telephone sites.

On the twisted-pair side, each G.703 Adapter and each

of the Balun Mate II’s port-card modules has a standard

RJ-45 jack.

Here’s a summary of the main features of the

Adapters and the Balun Mate II:

• Connect 75-ohm dual-coax G.703 terminations to

120-ohm twisted-pair G.703 terminations.

• Bidirectional signal conversion.

• Uses 1.6/5.6-mm coaxial connectors and standard

RJ-45 twisted-pair connectors, all of which have low

insertion loss.

• Data rates up to 2.048 Mbps.

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