Black Box IC238A-F, IC238A-M User Manual

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

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RS-232 to RS-422/RS-530

Interface-Powered Converter

DB25 M to DB25 F or DB25 M

JANUARY 2009

IC238A-F

IC238A-M

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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TRADEMARKS USED IN THIS MANUAL

Black Box and the Double Diamond logo are registered trademarks of BB Technologies, Inc.

Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

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RS-232 TO RS-422/RS-530 INTERFACE-POWERED CONVERTER

1. Specifications

Speed (Maximum): 200 kbps

Transmission Format: Synchronous, transparent to protocol

CE Approval: Yes

Cable Length: 6.6 ft. (2 m)

Connectors: IC238A-F: (1) RS-232 DB25 female, (1) RS-232 DB25 male;

IC238A-M: (2) RS-232 DB25 male

Operating Temperature: 32 to 122°F (0 to 50°C)

Humidity: Up to 90%, noncondensing

Size: 0.9"H x 2.1"W x 4.3"D (2.2 x 5.3 x 11 cm)

Weight: 7.7 oz. (220 g)

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CHAPTER 2: Overview

2. Overview

2.1 Description

Use the RS-232 to RS-422/RS-530 Interface-Powered Converters to connect a DTE and DCE with RS-232 and RS-530 interfaces. Two models are available with these connectors: DB25 M to DB25 F (IC238A-F) or DB25 M to DB25 M (IC238A-M). The connectors are linked via an integral 6.6-foot (2 meter) cable. Both models operate in synchronous applications at data rates up to 200 kbps.

Choose from two configuration options: either link a RS-232 DTE to an RS-530 DCE or attach a RS-232 DCE to a RS-530 DTE. These options are switch-selectable. Figure 2-1 illustrates a typical application.

DTE

IC238A-F

IC238A-M

DCE

Figure 2-1. Typical application.

IC238A-F and IC238A-M perform both the physical and the electrical conversion between two interfaces. The circuitry provides short-range interface conversion (to connect co-located devices).

IC238A-F and IC238A-M operate without AC power, deriving ultra-low power from the DTE and DCE data control signals.

2.2 Features

• Convert RS-232 and RS-530 interfaces.

• Support data rates up to 200 kbps.

• Operate synchronously.

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RS-232 TO RS-422/RS-530 INTERFACE-POWERED CONVERTER

• Transparent to procotol.

• No AC power required.

• Include cable and connectors.

• Select DTE/DCE or DCE/DTE via a switch.

• Easy to install.

• Miniature and lightweight.

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CHAPTER 2: Overview

CHAPTER

2.3 Schematic Diagrams

Schematic diagrams showing signal flow for the RS-232 DTE/RS-530 DCE and RS-232 DCE/RS-530 DTE configurations appear in Figures 2-2 and 2-3.

RS-530 (DTE)

Shield Protective GND

RS-232 (DCE)

Signal GND

RTS-a

RTS-b

CTS-a

CTS-b

DSR-a

DSR-b

DTR-a

DTR-b

LSD-a

LSD-b

TC-a

TC-b

RC-a

RC-b

EXT-TC-a

EXT-TC-b

TD-a

TD-b

RD-a

RD-b

R=100 ohms

18 21

Signal GND

RTS

CTS

DSR

DTR

DCD

EXT-TC

LL RL

Figure 2-2. Schematic diagram, RS-232 DTE/RS-530 DCE.

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NAME

RS-232 TO RS-422/RS-530 INTERFACE-POWERED CONVERTER

RS-232 (DCE)

Protective GND

Signal GND

RTS

CTS

DSR

DTR

DCD

EXT-TC

RS-530 (DTE)

Shield

Signal GND

RTS-a

RTS-b

CTS-a

CTS-b

DSR-a

DSR-b

DTR-a

DTR-b

LSD-a

LSD-b

TC-a

TC-b

RC-a

RC-b

EXT-TC-a

EXT-TC-b

TD-a

TD-b

RD-a

RD-b

Figure 2-3. Schematic diagram, RS-232 DCE/RS-530 DTE.

R=100 ohms

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CHAPTER 3: Installation

3. Installation

CAUTION

This is a delicate instrument. Be careful not to break or shake any components when setting jumpers or handling the unit.

IC238A-F and IC238A-M are factory-set to RS-232 DTE/RS-530 DCE (see Figure 3-1).

(DTE) PORT DCE (MODEM)

CHAPTERCHAPTER 2: Overview

Figure 3-1. RS-232 DTE/RS-530 DCE configuration (default).

To alter this configuration, follow these steps:

1. Starting at the line end, separate the two parts of the plastic cover by firmly pressing the marked places on the sides.

2. Starting at the cable end, separate the two parts of the plastic cover by firmly pressing the marked places on the sides.

3. Remove the 40-pin DTE/DCE socket by gently grasping both sides and slowly moving it from side to side.

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NAME

RS-232 TO RS-422/RS-530 INTERFACE-POWERED CONVERTER

4. Invert the socket so that the DCE faces the RS-232 connector and the DTE faces the RS-530 device (see Figure 3-2). Make sure that the pins are aligned with the socket.

RS-232 SIDE

(DTE) PORT DCE (MODEM)

Figure 3-2. RS-232 DCE/RS-530 DTE configuration (alternate).

5. To close the unit, press the two plastic covers together.

6. Plug the IC238A-F or IC238A-M directly into the DCE and the insert the cable connector into the DTE or vice versa, according either to the default configuration or to the alternate configuration you created in Step 4.

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CHAPTER 4: Troubleshooting

CHAPTER

4. Troubleshooting

4.1 Calling Black Box

If you determine that your interface-powered converter is malfunctioning, do not attempt to alter or repair the unit. It contains no user-serviceable parts. Contact Black Box Technical Support at 724-746-5500.

Before you do, make a record of the history of the problem. We will be able to provide more efficient and accurate assistance if you have a complete description, including:

• the nature and duration of the problem.

• when the problem occurs.

• the components involved in the problem.

• any particular application that, when used, appears to create the problem or make it worse.

4.2 Shipping and Packaging

If you need to transport or ship your interface-powered converter:

• Package it carefully. We recommend that you use the original container.

• If you are returning the unit, make sure you include everything you received with it. Before you ship for return or repair, contact Black Box to get a Return Authorization (RA) number.