Black Box CL095A-F Bedienungsanleitung

CUSTOMER

SUPPORT

INFORMATION

JULY 1995

CL095A-F CL096A-M

CL095A-M CL097A-F

CL096A-F CL097A-M

HS RS-232↔Current Loop

Converter Passive

HS RS232↔

Current Loop

Converter - Passive

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]

HS RS-232↔CURRENT LOOP CONVERTER PASSIVE

FEDERAL COMMUNICATIONS COMMISSION

AND

CANADIAN DEPARTMENT OF COMMUNICATIONS

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 the Canadian

Department of Communications.

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 le ministère des Communications du Canada.

TRADEMARKS USED IN THIS MANUAL

AT&T is a registered trademark of American Telephone and Telegraph

Company.

Any trademarks mentioned in this manual are acknowledged to be the

property of the trademark owners.

HS RS-232↔CURRENT LOOP CONVERTER PASSIVE

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 parato 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.

HS RS-232↔CURRENT LOOP CONVERTER PASSIVE

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 equio 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.

HS RS-232↔CURRENT LOOP CONVERTER PASSIVE

Contents

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

2. Introduction ......................................................................................................6

2.1 Overview......................................................................................................6

2.2 Features.......................................................................................................6

3. Configuration....................................................................................................7

3.1 Overview......................................................................................................7

3.2 Setting the DCE/DTE Switch ....................................................................8

4. Installation.........................................................................................................9

4.1 Twisted-Pair Wiring ....................................................................................9

4.1.1 Twisted-Pair Connection Using Terminal Blocks ..........................9

4.1.2 Twisted-Pair Connection Using Modular Jacks ............................14

4.2 Completing the Installation.....................................................................15

Appendix A. RS-232C Pin Configurations........................................................16

Appendix B. Block Diagram..............................................................................17

HS RS-232↔CURRENT LOOP CONVERTER PASSIVE

Data Rates Up to 115.2 Kbps

Connectors RS-232 side—CL095A-F, CL096A-F,

CL097A-F: DB25 female; CL095A-M,

CL096A-M, CL097A-M: DB25 male

Current-Loop side—CL095A-F, CL095A-M:

Terminal block with strain relief;

CL096A-F, CL096A-M: RJ-11; CL097A-F,

CL097A-M: RJ-45

Transmission Line 19- to 26-AWG twisted pair

Range 4 miles (6.4 km) on 24-AWG twisted pair

Interfaces Asynchronous, EIA RS-232, CCITT V.24

full duplex, 20-mA current loop

(passive)

Isolation 2500V RMS via opto-isolators

Operating Temperature 32° to 140°F (0° to 60°C)

Humidity 0 to 95%, noncondensing

Altitude Up to 15,000 feet (4570 m)

Power No external power required; uses power

from RS-232 data signals

Size 1.2"H x 3⁄4"W x 21⁄2"D (3 x 1.9 x 6.4 cm)

Weight 1.5 oz. (42.5 g)

1. Specifications

HS RS-232↔CURRENT LOOP CONVERTER PASSIVE

2.1 Overview

The HS RS-232↔Current Loop Converter Passive lets an asynchronous

RS-232 device communicate with an active 20-mA current-loop device. The

HS RS-232↔Current Loop Converter Passive requires no AC power or

batteries to operate and supports data rates up to 115.2 Kbps.

Operating at full duplex, the HS RS-232↔Current Loop Converter Passive

supports communication distances up to 4 miles (6.4 km) over two

unconditioned 24-AWG twisted pairs. To guard against data loss due to

ground loops, the HS RS-232↔Current Loop Converter Passive is equipped

with 2500V RMS optical isolators on the line side.

The HS RS-232↔Current Loop Converter Passive connects directly to the RS-

232 interface using a male or female DB25 connector. Two-pair cable running

to the 20-mA current-loop device attaches to the HS RS-232↔Current Loop

Converter Passive by RJ-11 jack, RJ-45 jack, or terminal blocks with built-in

strain relief. An external DCE/DTE switch on the HS RS-232↔Current Loop

Converter Passive eliminates the need for a crossover cable on the RS-232

interface.

2.2 Features

•Full-duplex, asynchronous operation over 4 wires.

•Data rates up to 115.2 Kbps.

•No AC power required.

•Optically isolated.

•Twisted-pair connection via terminal blocks, RJ-11, or RJ-45 jacks.

•External DCE/DTE switch.

2. Introduction

HS RS-232↔CURRENT LOOP CONVERTER PASSIVE

3.1 Overview

The HS RS-232↔Current Loop Converter Passive is easy to use. There are no

internal jumpers or DIP switches to set, so there’s no need to open the case to

configure the unit. (You may need to open the case for wire connection. See

Chapter 4.) The only configuration necessary for operation is setting the

external DCE/DTE switch.

The figure below shows the location of the DCE/DTE switch on the PC

board, as well as the location of the terminal block.

Terminal

Block

DCE/DTE

Switch

Opto-

Isolator

Opto-

Isolator

3. Configuration

HS RS-232↔CURRENT LOOP CONVERTER PASSIVE

3.2 Setting the DCE/DTE Switch

For your convenience, the Converter has an externally accessible DCE/DTE

switch (see the diagram below). If the RS-232 device connected to the

Converter is a modem or multiplexor (or is wired like one), set the switch to

“DTE.” The setting causes the Converter to behave like Data Terminal

Equipment and transmit data on pin 2.

If the RS-232 device connected to the Converter is a PC, terminal, or host

computer (or is wired like one), set the switch to “DCE.” This setting causes

the Converter to behave like Data Communications Equipment and transmit

data on pin 3.

DCE DTE

HS RS-232↔CURRENT LOOP CONVERTER PASSIVE

The HS RS-232↔Current Loop Converter Passive is simple to install. After

configuring the DCE/DTE switch, connect the two twisted pairs using one of

three methods: terminal blocks with strain relief, RJ-11 jack, or RJ-45 jack. The

method you use will depend on the specific model you have. (See

“Connectors” in Chapter 1 if you aren’t sure which method you should use.)

4.1 Twisted-Pair Wiring

Only one HS RS-232↔Current Loop Converter Passive is needed for each RS-

232 to 20-mA current-loop circuit. The HS RS-232↔Current Loop Converter

Passive is connected to the current-loop device using two twisted pairs. The

pairs must be “dry” (unconditioned) metallic wire, 19 to 26 AWG. Best

distance is achieved with larger gauges. When you have completed wiring for

your data circuit, the pin connections should be as shown below:

4.1.1 T

WISTED

-P

AIR

ONNECTION

SING

ERMINAL

LOCKS

The terminal block/strain-relief version of the HS RS-232↔Current Loop

Converter Passive (CL095A-F and CL095A-M) allows you to hook up the line-

side interface using bare wires. The following instructions will tell you how to

open the case, connect the bare wires, and fasten the strain-relief collar in

place.

XMT+

XMT-

RCV-

RCV+

- - - - - - - - -

RCV-

- - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - RCV+

To Shield (Optional)

- - - - - - - - - - - - - - - - - - - - XMT-

- - - - - - - - - - - - - - - - - - - - XMT+

One Pair

4. Installation

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