Black Box ME800A-R4 Manuale utente

BL A C K B O X®

Place a receiving device up to 4 miles from the

sending device.

Select DCE or DTE via a DIP switch, so you won’t need special cables.

Product Group Title™

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: info@blackbox.com

Customer

Support

Information

March 2009

codes codes

BL A C K B O X®

Short-Haul Modem

ME800A-R4

Page 2 724-746-5500 | blackbox.com

Trademarks Used in this Manual

Black Box and the Double Diamond logo are registered trademarks of

BB Technologies, Inc.

UL Is a registered trademark of Underwriters Laboratories.

Any other trademarks mentioned in this manual are acknowledged to be

the property of the trademark owners.

Page 3

724-746-5500 | blackbox.com

FCC and IC RFI Statements/NOM Statement

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 B 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 la classe A prescrites dans le

Règlement sur le brouillage radioélectrique publié par Industrie Canada.

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.

Page 4 724-746-5500 | blackbox.com

NOM Statement

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

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.

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.

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NOM Statement

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.

Page 6 724-746-5500 | blackbox.com

Table of Contents

1. Specifications ...............................................................................................7

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

3. Installation..................................................................................................10

4. Troubleshooting .........................................................................................15

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724-746-5500 | blackbox.com

Chapter 1: Specifications

1. Specifications

Technical Specifications

Approvals Power supply: UL®, CSA

Data Flow Control: X-ON/X-OFF;

Data Format: Asynchronous, full-duplex

Interconnect Two-pair twisted-pair cable

Speed Up to 115,200 bps at up to 4000 feet (1250 m);

Up to 57,600 bps at up to 1 mile;

Up to 9600 bps at up to 4 miles

User Controls (1) 4-position DIP switch,

(1) DCE/DTE slide switch,

(1) push-button switch

Interface EIA RS-232-C;

CCITT V.24, V.28;

ISO 2110

Connectors (1) DB9 female;

(1) 4-position terminal block;

(1) R J -11;

(1) DC power jack

Indicators TX: This dual Red/Green LED will be green when the Receive

Data is low, and red when the Receive Data is high.

RX: This LED can be used to verify proper polarity of the

interconnecting lines: it should be green when no data

is being transmitted. Red indicates improper line polarity.

Environment Temperature Tolerance:

Operating: 23 to 86° F (-5 to +30° C);

Storage: 23 to 140° F (-5 to +60° C);

Humidity: 0 to 95% relative humidity, non-condensing

Power Wallmount power supply: 9 VDC, 500 mA, 115 VAC, UL,

CSA

Dimensions 1.5"H x 5.2"W x 5.2"D (3.8 x 13.2 x 13.2 cm)

Weight 1.4 lb. (0.6 kg), including power supply

Page 8 724-746-5500 | blackbox.com

Chapter 2: Introduction

2. Introduction

These short-haul modems enable you to place a receiving device up to four miles

from the sending device. They are switch-selectable for either DCE or DTE

application, eliminating the need for special cables and preventing confusion

during installation. The short-haul modems are connected with twisted-pair cable,

using a 4-position terminal block or RJ-11. The units are optically isolated to

provide protection from differences in ground potential between the units. The

units provide line status (Data Carrier Detect when DCE is selected and Data

Terminal Ready when DTE is selected) to indicate that the remote unit is online

and ready to communicate. Two dual RED/GREEN indicators on the front panel

indicate the status of receive and transmit circuitry as well as proper polarity of

twisted-pair connections.

1 2 3 4

Figure 2-1. Front panel.

5 6 7 8 9

Figure 2-2. Back panel.

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724-746-5500 | blackbox.com

Chapter 2: Introduction

Table 2-1. Components.

Number Component Description

1Pushbutton Press this button for Loopback operation.

The button is not pressed in Normal operation.

2(2) TX LEDs This dual Red/Green LED will be green when the Received

Data is low, and red when the Received Data is high.

3(2) RX LEDs This LED can be used to verify proper polarity

of the interconnecting lines: it should be green when no

data is being transmitted. Red indicates improper line

polarity.

4DCE/DTE DIP

switch

Slide left to configure the modem as a DCE.

Slide right to configure the modem as a DTE.

5(1) DB9 connector Links to RS-232 interface.

64-position DIP

switch S3

See Table 3-6.

7Power connector 9-VDC, 500 mA power connector

8RJ-11 connector 6-position connector

Page 10 724-746-5500 | blackbox.com

Chapter 3: Installation

3. Installation

Before you begin, make sure all equipment, including the converters, are not

powered on.

1. Set the 4-position DIP switch as appropriate for local control signal enable and

cable distance.

2. Set the slide switch for either DCE to connect to a PC or DTE to connect to a

modem.

3. Connect the two short-haul modems with twisted-pair cable, making sure to

connect TX+ and TX- on the local unit to RX+ and RX- respectively on the

remote unit, and vice versa. You can use either the RJ-11 connector or the

4-wire terminal block.

4. Once the modems are connected together, connect DB9 cables to equipment

and power up the converters.

5. Next, power up your equipment. For testing purposes, a loopback function has

been incorporated into the short-haul modem. Placing the local unit in

loopback enables the local unit to be tested without the line, and enables the

remote unit to test the line. Placing the remote unit in loopback allows the local

unit to test the line. Keep in mind that the unit in loopback sees a cable of zero

length, while the other unit sees twice the cable length. This may affect the DIP

switch settings and the baud rate at which the test will be successful.

Table 3-1. Four-position

screw terminal connector.

Position Function

1 TX+

2TX-

3 RX+

4RX-

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