Black Box RS-232/422/485 - Manual

Page 2 - FCC AND IC RFI STATEMENTS; FEDERAL COMMUNICATIONS COMMISSION; Caution

1 FCC AND IC RFI STATEMENTS FEDERAL COMMUNICATIONS COMMISSION and INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS Class B Digital Device. This equipment has been tested and found to comply with the limits for a Class B computing device pursuant to Part 15 of the FCC Rules.These limits are de...

Page 3 - EMC Directive Statement

2 DUAL- AND QUAD-PORT USB HUBS EMC Directive Statement Products bearing the CE Label fulfill the requirements of the EMC directive(89/336/EEC) and of the low-voltage directive (73/23/EEC) issued by theEuropean Commission. To obey these directives, the following European standards must be met: • EN55...

Page 4 - NOM STATEMENT; ELECTRICAL SAFETY STATEMENT

3 NOM STATEMENT 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 refer...

Page 6 - TRADEMARKS

5 TRADEMARKS TRADEMARKS USED IN THIS MANUAL AT, IBM, and PS/2 are registered trademarks of International Business MachinesCorporation. Windows is a registered trademark of Microsoft Corporation. Any other trademarks mentioned in this manual are acknowledged to be the property of thetrademark owners.

Page 7 - Contents

6 DUAL- AND QUAD-PORT USB HUBS Contents Chapter Page 1. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82.1 Over...

Page 8 - CHAPTER 1: Specifications

7 1. Specifications Standards: USB version 1.1 Speed: RS-232: Up to 460.8 kbps; RS-422/485: Up to 921.6 kbps Indicators: IC1020A: (5) Status LEDs: (3) USB Enabled; (2) Port Activity; IC1021A, IC1022A: (9) Status LEDs: (5) USB Enabled; (4) Port Activity Connectors: IC1020A: (1) USB Type B; (2) DB9 ma...

Page 9 - Technical Description

8 DUAL- AND QUAD-PORT USB HUBS 2. Introduction 2.1 Overview The USB Hub equips the PC with 2 or 4 USB to RS-232/422/485 or RS-422/485asynchronous serial ports. It gives you a versatile interface for common serialneeds. Three models are available: • The Dual-Port USB Hub (IC1020A) has 2 USB ports to ...

Page 12 - CHAPTER 3: Installation

11 CHAPTER 3: Installation Figure 3-1. System Properties screen, Device Manager tab. You can access your new COM ports by using the assigned COM identifiers asshown in Figure 3-1. In this case, it is COM3, 4, 5, and 6. However, this assignmentwill vary from system to system. At this point, the hardw...

Page 13 - Original Configuration; Electrical Interface Selection

12 DUAL- AND QUAD-PORT USB HUBS 4. Configuration 4.1 Original Configuration This device ships with the following configuration: • 422 mode, • 120 ohm termination, • 1 K-ohm pull-up resistance on RX+, and • 1 K-ohm pull-down resistance on RX-. To change this configuration, you must open the box. Do t...

Page 14 - CHAPTER 4: Configuration; Jumper; NOTE

13 CHAPTER 4: Configuration Table 4-1. Jumper settings. Jumper Port RS-232 RS-422/485 E52 X E6 2 X E7 1 X E8 1 X Switch SW4 Settings To configure the ports on the Dual-Port USB Hub for RS-422/RS-485 instead ofRS-232, select Jumper E7 for Port 1 and Jumper E6 for Port 2. (See Table 4-1.)When you are ...

Page 16 - Switch

15 CHAPTER 4: Configuration Table 4-3. DIP-switch SW3 settings. Switch Switch Port Description RS-485 RS-422 Setting Number 485SW3-1 1 485 Mode (4-wire) ON OFF NE SW3-2 1 485 Mode, No Echo (2-wire) ON OFF 485SW3-3 2 485 Mode (4-wire) ON OFF NE SW3-4 2 485 Mode, No Echo (2-wire) ON OFF NE = No Echo. ...

Page 23 - Appendix A. Troubleshooting; A.1 Troubleshooting Tips

22 DUAL- AND QUAD-PORT USB HUBS Appendix A. Troubleshooting A.1 Troubleshooting Tips Serial Utility test software is supplied on the included CD-ROM and will be used inthe troubleshooting procedures. By using this software and following these simplesteps, you can eliminate most common problems witho...

Page 24 - A.2 Calling Black Box; A.3 Shipping and Packaging; APPENDIX A: Troubleshooting

23 A.2 Calling Black Box If you determine that your USB Hub is malfunctioning, do not attempt to alter orrepair the unit. It contains no user-serviceable parts. Contact Black Box at 724-746-5500. Before you do, make a record of the history of the problem. We will be able toprovide more efficient and...

Page 25 - Appendix B. Electrical Interfaces

24 DUAL- AND QUAD-PORT USB HUBS Appendix B. Electrical Interfaces B.1 RS-232 Quite possibly the most widely used communication standard is RS-232. Thisimplementation has been defined and revised several times and is often referred to as EIA/TIA-232. The IBM ® PC AT ® computer defined the RS-232 port...

Page 26 - APPENDIX B: Electrical Interfaces

25 B.3 RS-485 RS-485 is backward-compatible with RS-422; however, it is optimized for partylineor multidrop applications. The output of the RS-422/485 driver is capable of beingActive (enabled) or Tristate (disabled). This capability allows multiple ports to beconnected in a multidrop bus and select...

Page 27 - Asynchronous Communication

26 DUAL- AND QUAD-PORT USB HUBS Appendix C: Asynchronous Communication In serial data communication, individual bits of a character are transmittedconsecutively to a receiver that assembles the bits back into a character. Data rate,error checking, handshaking, and character framing (start/stop bits)...

Page 28 - APPENDIX C: Asynchronous Communication

27 Because each bit in asynchronous communication is sent consecutively, it is easy togeneralize asynchronous communication by stating that each character is wrapped(framed) by pre-defined bits to mark the beginning and end of the serialtransmission of the character. The data rate and communication ...

Black Box RS-232/422/485 - Manual

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Summary

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