Black Box ME190A Bedienungsanleitung

APRIL 1995

ME190A

ME191A

ME192A

ME193A

Parallel Line Driver—T

Parallel Line Driver—R

ACK BSY

PARALLEL LINE

DRIVER-T

ACK BSY

PARALLEL LINE

DRIVER-R

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: [email protected]

PARALLEL LINE DRIVER

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.

PARALLEL LINE DRIVER

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.

PARALLEL LINE DRIVER

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.

PARALLEL LINE DRIVER

TRADEMARKS

Centronics®is a registered trademark of GENICOM Corporation.

AT&T®is a registered trademark of AT&T.

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

of the trademark owners.

PARALLEL LINE DRIVER

Contents

Chapter Page

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

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

2.1 Description ...............................................................................................7

2.2 Features ....................................................................................................7

3. Configuration....................................................................................................8

4. Installation ......................................................................................................10

4.1 Connecting the Line Side......................................................................10

4.1.1 Terminal-Block Connection .......................................................10

4.1.2 RJ-11 Line Connection................................................................16

4.2 Connecting to Parallel Hardware .........................................................17

4.3 Operating the Parallel Line Driver.......................................................17

Appendix A: Parallel Pin Configurations.........................................................18

Appendix B: Block Diagrams ............................................................................20

PARALLEL LINE DRIVER

1. Specifications

Data Rate — 5 Kilobytes per second

on parallel interface (40 Kbps

on serial line)

Interface Signals — Data bits 0-7,

ground, Busy or Acknowledge

(externally switch-selectable)

Power — Interface-powered, no

AC power or batteries needed

Size — 2.7"H x 2.1"W x 0.7"D

(6.8 x 5.3 x 1.8 cm)

Weight — 1 lb. (0.5 kg)

Parallel Interface —

ME190A: transmitter, DB25

male w/terminal block,

ME191A: receiver, Centronics

male w/terminal block,

ME192A: transmitter, DB25

male w/RJ-11,

ME193A: receiver, Centronics

male w/RJ-11

Range — 2000 feet (609.6 m)

Transmission — Half-duplex over

a single shielded or unshielded

twisted pair (19-26 AWG)

Line Interface — RJ-11, RJ-45, or

terminal block with strain relief

CHAPTER 2: Introduction

2. Introduction

2.2 Features

• Extends parallel communication

to 2000 feet (609.6 m)

• Requires no AC power or

batteries

• Operates over a single twisted

pair

• Allows devices to communicate

in “real time”

• Can be configured for BUSY or

ACKNOWLEDGE flow-control

methods

• Compatible with most printer-

sharing devices

• Transmits DC power over the

line to compensate for low-

power parallel-printer interfaces

• DB25 or Centronics parallel

connections

• RJ-11 or terminal-block line

connections

2.1 Description

The Parallel Line Driver allows

a PC and a parallel output device

(printer, sharing switch, etc.) to

communicate at distances to

2000 feet (609.6 m) over a single

unconditioned twisted pair.

Supporting parallel data rates to

5 kilobytes per second (serial rates

to 40 kbps), the Parallel Line Driver

derives all necessary operating power

from the parallel interface—no AC

power or batteries are required.

The Parallel Line Driver always

works in pairs: A transmitter unit is

plugged into the PC’s parallel port,

and a receiver unit is plugged into

the output device’s parallel port.

The connection between them is

serial, and functions at speeds high

enough to allow real-time parallel

communication between the two

parallel devices.

The Parallel Line Driver has

two unique features that allow it to

operate in a wide variety of parallel

applications: First, the Line Driver

transmitter is able to send DC power

down the line to the receiver in

order to compensate for low power

parallel printer interfaces. Second,

the Parallel Line Driver can be

configured for either BUSY or

ACKNOWLEDGE flow-control

methods.

The Line Driver receiver is

available with Centronics®parallel

interface. The Line Driver trans-

mitter is available with a DB25

parallel interface. Line-connection

options are RJ-11 or terminal block

with strain relief.

PARALLEL LINE DRIVER

3. Configuration

Figure 3-1. Location of the BUSY/ACKNOWLEDGE Switch.

The Parallel Line Driver is designed

to be easy to use. There are no

internal jumpers or DIP switches

to set, so there is no need to open

the case to configure the unit (you

may need to open the case for wire

connection—refer to Chapter 4).

The only configuration necessary

for operation is proper setting of the

external BUSY/ACKNOWLEDGE

switch. Figure 3-1 shows the location

of the BUSY/ACKNOWLEDGE

switch on the PC board, as well as

the location of the terminal block.

Busy

Ack

GS Terminal

Block

BUSY/

ACKNOWLEDGE

Switch

CHAPTER 3: Configuration

Setting the Busy/Acknowledge

Switch

There are three things to keep

in mind when you set the BUSY/

ACKNOWLEDGE switch

(see Figure 3-2):

Figure 3-2. BUSY/ACKNOWLEDGE Switch.

Busy

Ack

1. The switch must be set the same

way on both transmitter and

receiver.

2. Set the switch to Acknowledge

on both the transmitter and

receiver. This should achieve

good results in most

applications.

3. If you experience loss of infor-

mation or other problems with

both switches set to Acknowledge,

set both switches to Busy.

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