Omega OMG-COMM232-PCI User Manual

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User’s Guide

OMG-COMM232-PCI

Dual Port PCI RS-232 Interface Board

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The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts
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WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.

Contents

INTRODUCTION..........................................................................1

OVERVIEW................................................................................................1

HAT ’S INCLUDED................................................................................ 1

W

ACTORY DEFAULT SETTINGS ............................................................ 1

F

CARD SETUP ..............................................................................2

ADDRESS AND IRQ SELECTION............................................................2

LOCK MODES........................................................................................2

C

AUD RATES AND DIVISORS FOR THE ‘DIV2’ MODE ........................ 3

B

AUD RATES AND DIVISORS FOR THE ‘DIV1’ MODE ........................ 5

B

INSTALLATION ..........................................................................7

OPERATING SYSTEM INSTALLATION ................................................. 7

INDOWS 95/98/NT...............................................................................7

W

INDOWS 3.1X........................................................................................7

W

DOS...........................................................................................................7

THER OPERATING SYSTEMS..............................................................7

O

ARDWARE INSTALLATION ................................................................. 7

H

TECHNICAL DESCRIPTION.........................................................8

INTERRUPTS............................................................................................8

HY USE AN ISP?...................................................................................9

W

ONNECTOR PIN ASSIGNMENTS..........................................................9

C

RS-232....................................................................................................9

SPECIFICATIONS ......................................................................10

ENVIRONMENTAL SPECIFICATIONS..................................................10

ANUFACTURING................................................................................10

M

OWER CONSUMPTION........................................................................10

P

EAN TIME BETWEEN FAILURES (MTBF).....................................10

M

HYSICAL DIMENSIONS........................................................................10

P

APPENDIX A - TROUBLESHOOTING.........................................11

APPENDIX B - HOW TO GET ASSISTANCE..............................12

APPENDIX C - ELECTRICAL INTERFACE ...................................13

RS-232.................................................................................................... 13

APPENDIX D - ASYNCHRONOUS COMMUNICATIONS ...............14

APPENDIX E - SILK-SCREEN ....................................................15

APPENDIX F - COMPLIANCE NOTICES .....................................16

FEDERAL COMMUNICATIONS COMMISSION STATEMENT ............ 16

EMC DIRECTIVE STATEMENT ........................................................... 16

Figures

Figure 1 - Clocking Mode 'Divide By 4’............................................................2

Figure 2 - Clocking Mode 'Divide By 2’............................................................3

Figure 3 - Clocking Mode 'Divide By 1’............................................................5

Figure 4 - Asynchronous Communications Bit Diagram.............................14

© 1998f Omega Engineering, Incorporated. All rights reserved.

Introduction

Introduction

Overview

The Omega Engineering OMG-COMM+232.PCI is a two channel PCI Bus serial
I/O adapter for the PC and compatibles. It provides two RS-232 serial ports
supporting data rates up to 460.8K bps.

The OMG-COMM+232.PCI works seamlessly with the standard operating
system serial driver. UART upgrades are available providing 32 and 64 byte
FIFOs.

What’s Included

The OMG-COMM+232.PCI is shipped with the following items. If any of these
items are missing or damaged, contact the supplier.

• OMG-COMM+232.PCI Serial I/O Adapter

• Serial Utility Software

• User Manual

Factory Default Settings

The OMG-COMM+232.PCI factory default settings are as follows:

Port # Clock Mode

Port 1 DIV4
Port 2 DIV4

To install the OMG-COMM+232.PCI using factory default settings, refer to
Installation on page 7.
For your reference, record installed OMG-COMM+232.PCI settings below:

Port # Clock Mode

Port 1
Port 2

Omega Engineering COMM+232.PCI Page 1

Card Setup

Card Setup

Address and IRQ selection

The OMG-COMM+232.PCI is automatically assigned I/O addresses and IRQs
by your motherboard BIOS. Only the I/O address may be modified by the user.

Adding or removing other hardware may change the assignment of I/O
addresses and IRQs.

Clock Modes

The OMG-COMM+232.PCI 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 ar e selected at Headers J1C through J4C.

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) position.

DIV1

DIV2

DIV4

Figure 1 - Clocking Mode 'Divide By 4’

Omega Engineering COMM+232.PCI Page 2

Card Setup
To double these rates up to a maximum rate of 230.4K bps place the jumper in the

divide by 2 (silk-screen DIV2) position.

DIV1

DIV2

DIV4

Figure 2 - Clocking Mode 'Divide By 2’

Baud Rates and Divisors for the ‘DIV2’ mode

The following table shows some common data rates and the rates you should
choose if using the adapter in the ‘DIV2’ mode.

For this Data Rate Choose this Data Rate

1200 bps 600 bps
2400 bps 1200 bps
4800 bps 2400bps
9600 bps 4800 bps

19.2K bps 9600 bps

38.4K bps 19.2K bps

57.6 K bps 28.8K bps

115.2 K bps 57.6 K bps

230.4 K bps 115.2 K bps

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 192
2400 bps 96
4800 bps 48
9600 bps 24

19.2K bps 12

38.4K bps 8

57.6K bps 4

115.2K bps 2

230.4K bps 1

Omega Engineering COMM+232.PCI Page 3