Black Box RS-232 HS User Manual
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Black Box RS-232 HS User Manual

Black Box RS-232 HS User Manual

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CUSTOMER
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
SUPPORT
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
INFORMATION
Web site: www.blackbox.com • E-mail: info@blackbox.com
RS-232 HS
MARCH 2000
IC130C
IC177C

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  • Page 1 Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX SUPPORT 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 INFORMATION Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 2 RS-232 HS TRADEMARKS USED IN THIS MANUAL IBM, PAL, and PS/2 are registered trademarks of International Business Machines Corporation. UL is a registered trademark of Underwriters Laboratories Incorporated. Windows is a registered trademark of Microsoft Corporation. All applied-for and registered trademarks are the property of their...
  • Page 3 RS-232 HS FEDERAL COMMUNICATIONS COMMISSION and CANADIAN DEPARTMENT OF COMMUNICATIONS RADIO FREQUENCY INTERFERENCE STATEMENT This equipment has been tested and found to comply with Class B Digital Device. the limits for a Class B computing device pursuant to Part 15 of the FCC Rules.
  • Page 4 RS-232 HS 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.
  • Page 5 RS-232 HS 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.
  • Page 6 RS-232 HS EMC DIRECTIVE STATEMENT Products bearing the CE label fulfill the requirements of the EMC directive (89/336/EWG) and of the low-voltage directive (73/23/EWG) issued by the European Commission. To obey these directives, the following European standards must be met: •...

  • Page 7: Table Of Contents

    5. Installation ....................16 5.1 Windows 3.x (Including Windows for Workgroups 3.11) Installation ............16 5.2 Windows 95 and Windows NT Installation ........18 5.3 RS-232 HS Software Drivers ............18 5.4 Hardware Installation..............19 6. Troubleshooting ..................20 6.1 Solving Common Problems............20 6.2 Calling Your Supplier ..............21 6.3 Shipping and Packaging ..............21...

  • Page 8: Specifications

    RS-232 HS 1. Specifications IC130C: 16650 UART; Communication Chip — IC177C: 16950 UART (2) DB9 M, (1) PC-card edge, 16-bit Connectors — (2) 3.5-inch asynchronous utility disks Diagnostics — IPC 610-A Class-III standards are Manufacturing — adhered to with a 0.1 visual A.Q.L. and 100% functional testing.

  • Page 9: Introduction

    32-byte input and output FIFO. The IC177C uses the 16950 UART, which features a 128-byte FIFO. In addition, the RS-232 HS supports IRQs 2–5, 7, 10, 11, 12, and 15. And shareable IRQs allow more than one port to share a single IRQ.

  • Page 10: Connector Pin Assignments

    RS-232 HS 3. Connector Pin Assignments NOTE These assignments meet EIA/TIA/ANSI-574 DTE for DB9 connectors. Signal Name Pin # Mode Transmit Data Output Request To Send Output Data Terminal Ready Output Ground — Receive Data Input Data Carrier Detect Input...

  • Page 11: Card Setup

    PC as a standard serial port. A DIP switch (SW1) is used to set the port address options for the RS-232 HS. Be careful when selecting the port address—some selections conflict with existing PC ports. The table on the next page shows the addressing options available with the standard PAL.

  • Page 12: Port Enable/Disable

    Troubleshooting 4.2 Port Enable/Disable Port 2 on the RS-232 HS can be enabled or disabled with the jumper at E6 for applications requiring only one port. The port is enabled with the jumper installed and disabled when removed. If Port 2 is disabled, be sure to disable the interrupt request for that port by removing the IRQ jumper at E2.

  • Page 13: Irq Selection

    RS-232 HS 4.3 IRQ Selection Headers E1 and E2 select the interrupt request for each serial port (E1 for Port 1 and E2 for Port 2). If COM1: is selected, the corresponding jumper must be on the IRQ4 setting. If COM2: is selected, the corresponding jumper must be on IRQ3.

  • Page 14: Interrupt Modes

    . This provides the pull-down resistor circuit that makes sharing of IRQs possible. If you are using more than one RS-232 HS or a compatible adapter in a bus, only have one port set to . The following example shows both ports sharing a single IRQ.

  • Page 15: Clock Modes

    Figure 4-4. Header E3, Sharing IRQs with another adapter. 4.5 Clock Modes The RS-232 HS employs a unique clocking option that allows the end user to select from “divide by 4,” “divide by 2,” and “divide by 1” clocking modes. These modes are selected at Headers E4 and E5. To select the baud rates commonly associated with RS-232 (such as 2400, 4800, 9600, 19,200...115,200 bps) place the jumper in the “divide by 4”...

  • Page 16: Installation

    5.1 Windows 3.x (Including Windows for Workgroups 3.11) Installation ® To configure the RS-232 HS under Windows 3.1, open the Control Panel, which is typically found in the Main Program Group. Next, open the Ports selection under the Control Panel.
  • Page 17 Bits, and Flow Control. NOTE The Baud Rates selected here will only be accurate if the RS-232 HS’s clocking jumper is placed in the “divide by 4” mode. If the jumper is in the “divide by 2” mode, these data rates will be doubled (for example, 19.2 Kbps would equal 38.4 Kbps).

  • Page 18: Windows 95 And Windows Nt Installation

    If you wish to change any resources assigned to the adapter, refer to the help file installed in the Black Box folder in the Start, Programs menu. INDOWS For the ISA card, run setup on disk two of the Serial Utilities Diskettes before installing the card.

  • Page 19: Hardware Installation

    AT or (E)ISA IRQs (10, 11, 12, 15) it must be installed in one of the 16-bit slots. The RS-232 HS has several jumpers (straps) for each port which must be set for proper operation before you install the RS-232 HS in the computer.

  • Page 20: Troubleshooting

    2. Configure your RS-232 HS so that there is no conflict with currently installed adapters. No two adapters can occupy the same I/O address. 3. Make sure the RS-232 HS is using a unique IRQ. While the RS-232 HS does allow the sharing of IRQs, many other adapters (such as SCSI adapters and on-board serial ports) do not.

  • Page 21: Calling Your Supplier

    If you need to transport or ship your RS-232 HS: • Package it carefully. We recommend that you use the original container. • If you are shipping the RS-232 HS for repair, make sure you include everything that came in the original package. Before you ship, contact...

  • Page 22: Appendix A: Rs-232

    RS-232 is capable of operating at data rates up to 20 Kbps at distances less than 50 ft. The absolute maximum data rate may vary, depending on line conditions and cable lengths. The RS-232 HS uses special drivers and receivers to boot the data rate as high as 460 Kbps.

  • Page 23: Appendix B: Asynchronous Communications

    RS-232 HS Appendix B: Asynchronous Communications Serial data communications implies that individual bits of a character are transmitted consecutively to a receiver that assembles the bits back into a character. Data rate, error checking, handshaking, and character framing (start/stop bits) are pre-defined and must correspond at both the transmitting and receiving ends.
  • Page 24 RS-232 HS This special bit is called the parity bit. Parity is a simple method of determining if a data bit has been lost or corrupted during transmission. There are several methods for implementing a parity check to guard against data corruption. Common methods are called (E)ven Parity or (O)dd Parity.

  • Page 25: Appendix C: Board Layout

    RS-232 HS Appendix C: Board Layout 5.4" 16650 16650 74LS74 3.2" DIV1 DIV2 3.5" 4 2 1 4 2 1 A B C D E6 P2EN 74LS126 20L8 74LS245...
  • Page 26 © Copyright 2000. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...

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