Black Box ME550A-35, ME551A-35, ME550AE-35, ME551AE-35, ME551AE-X21 User Manual

...

1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746

CUSTOMER

SUPPORT

INFORMATION

Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com

MAY 1997 ME550A-35 ME550AE-35 ME550A-X21 ME550AE-X21 ME551A-35 ME551AE-35 ME551A-X21 ME551AE-X21 ME552A-35 ME552AE-35 ME552A-X21 ME552AE-X21

Campus Fiber Drivers

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river

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, may 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.

FCC AND IC STATEMENTS

CAMPUS FIBER DRIVERS

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.

CAMPUS FIBER DRIVERS

DISCLAIMERS

This manual contains information proprietary to the manufacturer. No part of this publication may be reproduced in any form whatsoever without prior written approval.

No representation or warranties for the fitness of these products for any purpose other than those specifically mentioned in this manual are made either by the manufacturer or its agents.

The manufacturer reserves the right to revise this publication and make changes without obligation to notify any person of such revisions and changes.

The manufacturer shall not be liable for any direct, indirect, special, incidental, or consequential damages, whether based on contract, tort, or any legal theory.

SAFETY WARNING

Always observe standard safety precautions while installing, operating, or troubleshooting this product. To avoid the possibility of electrical shock, disconnect the unit’s power cord from the power source before you remove the unit’s cover.

Only a competent technician who is aware of the hazards involved should carry out adjustment, maintenance, or repairs to this product. No adjustment, maintenance or repairs should be performed by either the operator or the user.

TABLE OF CONTENTS

Contents

Chapter Page

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

2. Introduction ............................................................................................... 9

2.1 General Overview ................................................................................ 9

2.2 Features in Detail .............................................................................. 10

2.3 Sample Applications ......................................................................... 11

3. Installation ................................................................................................ 13

3.1 Placement .......................................................................................... 13

3.2 Configuration .................................................................................... 13

3.3 Installation in 19-Inch Racks (Optional) ......................................... 17

3.4 Cabling the Driver ............................................................................ 20

4. Operation ................................................................................................. 25

4.1 The Front-Panel Controls and Indicators ....................................... 25

4.2 Operating Procedure ........................................................................ 27

5. Troubleshooting ...................................................................................... 29

5.1 Loop Tests ......................................................................................... 29

5.2 The Bit Error-Rate Tester (BERT) ................................................... 29

5.3 The Modem Self-Test ........................................................................ 30

5.4 Local Analog Loopback .................................................................... 30

5.5 Remote Digital Loopback ................................................................. 32

5.6 Local Digital Loopback .................................................................... 33

5.7 Contacting Black Box ....................................................................... 34

5.8 Shipping and Packaging ................................................................... 35

CAMPUS FIBER DRIVERS

Compliance — FCC Class A, IC Class/classe A

Standards — Loopback tests: ITU-TSS V.54;

BERT: ITU-TSS V.52

Interfaces — Line side: Fiberoptic:

ME550 models: Multimode; ME551 models: LED-source single-mode; ME552 models: Laser-source single-mode;

Device side:

“–35” models: ITU-TSS V.35; “–X21” models: ITU-TSS X.21

Protocol — Synchronous

Clock Source — Internal, external (from attached device), or

recovered (from remote LDM-MR128)

Flow Control — Transparent to flow control, although the user can

set the unit to raise or lower transmit carrier in response to the state of the RTS (V.35 models) or I (X.21 models) signal

Data Rate — 2.048, 1.544, 1.536, or 1.024 Mbps, or 768, 512, 384,

256, 128, 112, 64, or 56 Kbps (user-selectable)

Optical Wavelength — ME550 models: 850 nm;

ME551 and ME552 models: 1300 nm

Output Power — ME550 models: –18 dBm into 62.5/125 fiber

ME551 models: –18 dBm into 9/125 fiber ME552 models: –12 dBm into 9/125 fiber

1. Specifications

Receiver Sensitivity — ME550 models: –39 dBm;

ME551 and ME552 models: –40 dBm

Dynamic Range — 28 dBm

Link Budget — ME550 models: 21 dBm;

ME551 models: 22 dBm; ME552 models: 28 dBm

Maximum Distance — Depends on quality of cable, how and where cable is

installed, and (for Driver-to-DTE distance) interface and data rate:

Between Driver and DTE: 50 ft. (15.2 m); Across fiber link:

ME550 models: 3.1 mi. (5 km); ME551 models: 12.4 mi. (20 km); ME552 models: 31 mi. (50 km)

User Controls — (4) Front-mounted pushbuttons for loopback testing

and BERT; (1) Internal data-rate screwdial; (6) Internal jumpers for timing, testing, grounding,

and other features

Diagnostics — V.54-compliant loopback tests; V.52-compliant BERT

Indicators — (7) Front-mounted LEDs: PWR (power), RTS, TD,

RD, DCD, TEST, ERR (error)

Connectors — All models:

(2) ST female: (1) TX, (1) RX;

(1) IEC 320 male power inlet; “–35” models:

(1) 34-pin M-block female; “–X21” models:

(1) DB15 female

CHAPTER 1: Specifications

CAMPUS FIBER DRIVERS

MTBF — 95,000 hours

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

Humidity Tolerance — 0 to 90% noncondensing

Power — From outlet through power cord and internal power

supply:

Models with just “A” in product code:

Optimal Input: 115-VAC, 60 Hz, 43 mA; Input Range: 103.5- to 126.5-VAC, 47 to 63 Hz;

Models with “AE” in product code:

Optimal Input: 230-VAC, 50 Hz, 22 mA; Input Range: 207- to 253-VAC, 47 to 63 Hz;

Consumption: 5 VA (5 watts)

Size — 1.7"H x 9.6"W x 7.6"D (4.4 x 24 x 19.3 cm)

Weight — 3.1 lb. (1.4 kg)

CHAPTER 2: Introduction

2.1 General Overview

The Campus Fiber Driver is a synchronous high-speed fiberoptic modem designed to enable communication between two V.35- or X.21-compliant data devices over a fiberoptic link. Pairs of Drivers extend the distance of high-speed transmission by creating a secure fiberoptic link that is immune to electrical interference and differential ground loops. Data sent across this link will not be corrupted by sparking or lightning.

The Campus Fiber Driver operates at twelve selectable data rates from 56 kbps to 2048 kbps. The different models of the Driver operate across different kinds of fiberoptic links:

• The ME550 models use an LED to transmit data into multimode fiber at 850 nm across a maximum distance of 5 km (3.1 mi.).

• The ME551 models use an LED to transmit data into single-mode fiber at 1300 nm across a maximum distance of 20 km (12.4 mi.).

• The ME552 models use a laser diode to transmit data into single-mode fiber at 1300 nm across a maximum distance of 50 km (31 mi.).

The Campus Fiber Driver features V.54 diagnostic capabilities, an internal 511-bit pseudo-random pattern generator and a BER tester. It also supports different clock sources in order to support different applications: internal (from its own oscillator crystal), external (from DTE), or recovered (from received signal from remote Driver).

2. Introduction

CAMPUS FIBER DRIVERS

2.2 Features in Detail

This section describes some of the main features of the Campus Fiber Driver, especially those involving uts configuration and its electronic circuitry. Refer to the block diagram in Figure 2-1 below.

Figure 2-1. Block diagram for the Campus Fiber Driver.

2.2.1 D

ATACOMMUNICATION

The Campus Fiber Driver is a high-speed data link between computers, routers, or multiplexors. The twelve selectable data rates are: 56, 64, 112, 128, 256, 384, 512, and 768 Kbps; 1.024 and 1.536 Mbps; 1.544 Mbps (T1 speed); and 2.048 Mbps (E1/CEPT speed).

The electrical signals from the attached DTE are converted into an optical signal using an infrared light-emitting diode (LED) at 850 nm (ME550 models) or 1300 nm (ME551 models), or a laser-emitting diode at 1300 nm (ME552 models). At the opposite end of the fiber, the optical signal is converted back into the original electrical signal.

The Driver utilizes a Phase Locked Loop (PLL) circuit to recover jitter-free data and clock from the optical signal.

Different models of the Driver have the ITU-TSS V.35 DTE interface (“-35” product codes) or the ITU-TSS X.21 DTE interface (“-X21” product codes).

DTE Interface

FIFOs BERT V.54 Circuits Error Corrector

CDP Encoder/Decoder

PLL VCXO

TC & RC

EXT CLK

CDP to F/O

AGC. Equalizer Clock Recovery

F/O to CDP

Receive Clock

EXternal Clock

LED

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