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SeaLevel VERSA COMM+4/EX User Manual

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VERSA COMM+4/EX™
User Manual | 3405
1
© Sealevel Systems, Inc.
3405 Manual | SL9144 6/2021

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Summary of Contents for SeaLevel VERSA COMM+4/EX

  • Page 1 VERSA COMM+4/EX™ User Manual | 3405 © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...

  • Page 2: Table Of Contents

    APPENDIX C – ELECTRICAL INTERFACE ......................21 APPENDIX D – ASYNCHRONOUS COMMUNICATIONS .................. 22 APPENDIX E – SILK-SCREEN ..........................23 APPENDIX F – SCHEMATIC ..........................24 APPENDIX G – COMPLIANCE NOTICES ......................26 WARRANTY ................................ 27 © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...

  • Page 3: Introduction

    Introduction The Sealevel Systems VERSA COMM+4/EX provides the PC with four RS-232 asynchronous ports. The VERSA COMM+4/EX allows for connection to any device utilizing the RS-232 electrical interface, such as modems, data-entry terminals, and plotters. © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...

  • Page 4: Before You Get Started

    Before You Get Started What’s Included The VERSA COMM+4/EX is shipped with the following items. If any of these items are missing or damaged, please contact Sealevel for replacement. • ERSA COMM+4/EX Serial I/O Adapter • DB-37 to four DB-25 ‘Spider Cable’ (DB-9 Spider Cable is available)
  • Page 5 IRQ Mode Clock Divisor Port 1 Port 2 Port 3 Port 4 To install the VERSA COMM+4/EX using factory default settings, refer to Installation. For your reference, record installed VERSA COMM+4/EX settings below: Port # Base Address IRQ Mode Clock Divisor ©...

  • Page 6: Card Setup

    The VERSA COMM+4/EX contains several jumper straps that must be set for proper operation. Address Selection Each port on the VERSA COMM+4/EX occupies eight consecutive I/O locations. A DIP-switch is used to set the base address for these locations. The VERSA COMM+4/EX has a unique addressing scheme that allows it to be completely compatible with Sealevel Systems’...
  • Page 7 XX 10 111X XXXX where X = a non-selectable address bit. Port # Connector Location Address Example (Base=2E0) Base+0 2E0-2E7 Base+8 2E8-2EF Base+16 2F0-2F7 Base+24 2F8-2FF Figure 3 - Port to Connector Table © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...
  • Page 8 J1A through J4A. When sharing IRQs, many operating systems (i.e., Windows NT) will require the location of the Interrupt Status Port (ISP). Please see Page 10 for a description of the ISP and how it is used. © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...
  • Page 9 Figure 6 - Header J1A & J2A, Shared IRQ Mode Set the jumper to ‘S’ if you are using more than one VERSA COMM+4/EX in a bus or to completely remove the pull-down resistor for hardware compatibility. Setting the adapter in this configuration when it is not accompanied by a pull-down resistor will prevent the ports from triggering an interrupt.
  • Page 10 Card Setup, Continued Clock Modes The VERSA COMM+4/EX 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. This mode is selected at J5. To select the Baud rates commonly associated with COM: ports (i.e., 2400, 4800, 9600, 19.2, … 115.2K Bps) place the jumper in the divide by 4 mode (silk-screen DIV4).
  • Page 11 If your communications package allows the use of Baud rate divisors, choose the appropriate divisor from the following table: For this Data Rate Choose this Divisor 1200 bps 2400 bps 4800 bps 9600 bps 19.2K bps 38.4K bps 57.6K bps 115.2K bps 230.4K bps 460.8K bps © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...
  • Page 12 If your communications package allows the use of Baud rate divisors, choose the appropriate divisor from the following table: For this Data Rate Choose this Divisor 1200 bps 2400 bps 4800 bps 9600 bps 19.2K bps 38.4K bps 57.6K bps 115.2K bps 230.4K bps © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...

  • Page 13: Software Installation

    7. Proceed with the physical installation of your SeaLINK USB serial adapter. Windows NT is not USB aware and thus cannot support this device. © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...

  • Page 14: Hardware Installation

    Hardware Installation The VERSA COMM+4/EX can be installed in any of the PC ISA expansion slots. The VERSA COMM+4/EX contains several jumper straps for each port that must be set for proper operation. 1. Turn off PC power. Disconnect the power cord.

  • Page 15: Technical Description

    All four status ports on the VERSA COMM+4/EX are identical, so any one of the four can be read to determine which interrupt is pending.
  • Page 16 Mode Ground Transmit Data Output Request To Send Output Data Terminal Ready Output Receive Data Input Clear To Send Input Data Set Ready Input Data Carrier Detect Input Ring Indicator Input © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...
  • Page 17 RTS to CTS and RI. Also, connect DCD to DTR and DSR. Terminating these pins, if not used, will help insure you get the best performance from your adapter. © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...

  • Page 18: Specifications

    10 to 90% R.H. Non-Condensing Manufacturing All Sealevel Systems Printed Circuit boards are built to UL 94V0 rating and are 100% electrically tested. These printed circuit boards are solder mask over bare copper or solder mask over tin nickel. Power Consumption...

  • Page 19: Appendix A - Troubleshooting

    No two adapters can occupy the same I/O address. 3. Make sure the Sealevel Systems adapter is using a unique IRQ The IRQ is typically selected via an on-board header block. Refer to the section on Card Setup for help in choosing an I/O address and IRQ.

  • Page 20: Appendix B - How To Get Assistance

    If possible, please have the adapter installed in a computer ready to run diagnostics. 3. Sealevel Systems provides an FAQ section on its web site. Please refer to this to answer many common questions. This section can be found at http://www.sealevel.com/faq.htm.

  • Page 21: Appendix C - Electrical Interface

    0 (space) and -12 volts (-3 to -10 volts) denote a binary 1 (mark). The RS-232 and the EIA/TIA-574 specification define two types of interface circuits Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE). The Sealevel Systems Adapter is a DTE interface. © Sealevel Systems, Inc.

  • Page 22: Appendix D - Asynchronous Communications

    The communication parameters are baud rate, parity, number of data bits per character, and stop bits (i.e., 9600, N, 8, 1). © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...

  • Page 23: Appendix E - Silk-Screen

    Appendix E – Silk-Screen © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...

  • Page 24: Appendix F - Schematic

    Appendix F – Schematic © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...
  • Page 25 Appendix F – Schematic, Continued © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...

  • Page 26: Appendix G - Compliance Notices

    Always use cabling provided with this product if possible. If no cable is provided or if an alternate cable is required, use high quality shielded cabling to maintain compliance with FCC/EMC directives. © Sealevel Systems, Inc. 3405 Manual | SL9144 6/2021...

  • Page 27: Warranty

    Sealevel's commitment to providing the best I/O solutions is reflected in the Lifetime Warranty that is standard on all Sealevel manufactured I/O products. We are able to offer this warranty due to our control of manufacturing quality and the historically high reliability of our products in the field. Sealevel products are designed and manufactured at its Liberty, South Carolina facility, allowing direct control over product development, production, burn-in and testing.

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