Omega OMG-SP User guide

Contents

QUICK START FOR WINDOWS 95........................................... I

Installing the OMB-SP232/422 in Windows 95........................i

Windows 95 OSR2................................................................ iii

CHANGING SETTINGS FROM THE DEFAULT...................................VI

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

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

WHAT’S INCLUDED .....................................................................1

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

PHOENIX TECHNOLOGIES PHOENIXCARD MANAGER PLUS™.......3

PhoenixCARD Manager Utility Programs ...............................3

SYSTEMSOFT CARDSOFT™ PCMCIA ......................................... 4

CardSoft™ PCMCIA Utility....................................................4

INSTALLATION......................................................................5

TECHNICAL DESCRIPTION....................................................6

CONNECTOR PIN ASSIGNMENTS...................................................6

RS-232 (PART # 3611) ................................................................6

RS-530/422/485 (Part # 3610).................................................7

SPECIFICATIONS ...................................................................8

ENVIRONMENTAL SPECIFICATIONS...............................................8

POWER CONSUMPTION ................................................................ 8

MEAN TIME BETWEEN FAILURES (MTBF)....................................8

PHYSICAL DIMENSIONS................................................................ 8

APPENDIX A - TROUBLESHOOTING ......................................9

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

APPENDIX C - SEAPC AND SSENABLE SOFTWARE............13

SEAPC......................................................................................13

SeaPC System Requirements .................................................13

Installation of SeaPC............................................................. 14

Executing the Driver .............................................................14

SSENABLE................................................................................16

APPENDIX D - ELECTRICAL INTERFACE ............................17

RS-232.....................................................................................17

RS-422.....................................................................................17

RS-485.....................................................................................18

RS-530.....................................................................................18

APPENDIX E - COMPLIANCE NOTICES ............................... 19

FEDERAL COMMUNICATIONS COMMISSION STATEMENT..............19

EMC DIRECTIVE STATEMENT....................................................19

WARRANTY......................................................................... 20

© 1997j Omega Engineering, Incorporated. All rights reserved.

Quick Start for Windows 95

Quick Start for Windows 95

Installing the OMB-SP232/422 in Windows 95

With the first insertion of the PC Card, Windows 95 will pop up a window:
“Windows has found new Hardware and is installing software for it”

The correct selection would be “Select from a list of alternate drivers”.
The next screen displayed will be the “Select Hardware Type”.

Omega Engineering OMB-SP232/422 Page i

Quick Start for Windows 95

Arrow down until the “Other devices” selection is highlighted. Click OK.

‘Unsupported Device’ should be highlighted, click the ‘OK’ command button.
(Don’t be alarmed by the ‘Unsupported Device’ moniker, Windows 95 will
allocate an I/O address and IRQ for use with your OMB-SP232/422. These
resources are all that is required for your interface to function properly.)

Your device is now installed in the Windows 95 registry. To change/verify the
Address or IRQ, use the Windows 95 Device Manager. Every time the card is
installed, after the first installation, Windows 95 assumes that you will be using
it in the ‘same as previous’ installation and uses these settings as a default.

Omega Engineering OMB-SP232/422 Page ii

Quick Start for Windows 95

Windows 95 OSR2

Installing the OMB-SP232/422 under Windows 95 OSR2 is significantly
different from installing the card under the Retail release of Windows 95. If the
following steps are followed in the correct order, the installation is quite easy.
One of the most important issues is to make sure that the user has previously
installed the Windows 95 Card and Socket services. If this step has not been
accomplished, it must be done first.

With the first insertion of the PC Card, Windows 95 will pop up a window:

The next Screen will prompt:

Press the Finish command button and allow the ‘Wizard’ to complete.

Omega Engineering OMB-SP232/422 Page iii

Quick Start for Windows 95

Next step is to open the ‘Device manager’ and select the ‘Other devices’ key
that corresponds to your OMB-SP232/422.

After the Key opens select the ‘Driver’ Tab and press the ‘Update Driver’
command button.

Omega Engineering OMB-SP232/422 Page iv

Quick Start for Windows 95

When the Update Device Driver Wizard loads choose the ‘No, select driver
from list’ option button and click the ‘Next’ command button.

‘Other devices’ should be highlighted, if not scroll down until it is and click the
‘Next’ command button.

‘Unsupported Device’ should be highlighted, click the ‘Finished’ command
button. (Don’t be alarmed by the ‘Unsupported Device’ moniker, Windows 95
will allocate an I/O address and IRQ for use with your OMB-SP232/422. These
resources are all that is required for your interface to function properly.)

Omega Engineering OMB-SP232/422 Page v

Quick Start for Windows 95

Your device is now installed in the Windows 95 registry. To change/verify the
Address or IRQ, use the Windows 95 Device Manager. Every time the card is
installed, after the first installation, Windows 95 assumes that you will be using
it in the ‘same as previous’ installation and uses these settings as a default.

Changing settings from the Default

Now that the OMB-SP232/422 has been added to the system using the previous
steps, the resources (i.e. I/O address and IRQ) can be changed using the
following steps:

1.) Select the Control Panel folder and select the System icon.

2.) Select the Device Manager tab and click on the "+" symbol next to the

“Unsupported Device” selection. Choose the port that corresponds to the

OMB-SP232/422.

3.) Click the Properties button and then select the Resources tab.

4.) Select Basic Configuration 8, this will allow you to customize both the

IRQ and I/O settings.

5.) If the message "This resource setting cannot be modified." is displayed,

make sure you have selected a Base Configuration which allows this
resource to be changed and that the Use Automatic Settings checkbox is
not selected.

6.) When the “OK” button is pressed Windows 95 will automatically update

your settings. It will not be necessary to re-boot.

Refer to the Card Setup section for tips on installing the OMB-SP232/422 with
DOS Card and Socket Services.

Omega Engineering OMB-SP232/422 Page vi

Introduction

Introduction

Overview

Congratulations! You have now entered the world of mobile communications
via the Omega Engineering OMB-SP232/422 Serial Interface.

In the last few years, the portable and notebook market has grown by leaps and
bounds. Most early laptops and notebooks handled I/O expansion through
proprietary expansion slots. These slots provided limited expansion for specific
peripherals such as modems and FAX peripherals. Mass storage peripherals
were factory installed and could not be easily changed. Interconnectivity
through local area networks offered limited performance through slow parallel
port network interfaces.

During this time period two standards organizations, JEIDA and PCMCIA
were working on the standardization of memory IC cards. These cards were
designed as strictly non-volatile silicon storage. JEIDA was the first to propose
the 68 pin connector standard for memory cards. In 1989, PCMCIA adopted
the JEIDA 68 pin standard and worked with JEIDA on further developments.

As the notebook market grew, the need for a standard I/O bus was realized. The
PCMCIA saw an opportunity to meet this need with an expanded version of the
68 pin interface. Further development occurred, and within one year release 2.0
of the standard was completed. Release 2.0 was a major update to Release 1.0
and included full hardware support for I/O devices. Release 2.0 coincided with
JEIDA’s 4.1 release and is identical.

The OMB-SP232/422 continues the Omega Engineering tradition of an easy to
use, highly reliable, and technically advanced serial I/O solution.

What’s Included

The OMB-SP232/422 is shipped with the following items. If any of these
items are missing or damaged, contact the supplier.

• OMB-SP232/422 PCMCIA Serial Interface Adapter

• DB-25 cable assembly

• Impact Resistant Carrying Case (Jewel Case)

• 3.5″ ACB Toolkit Diskette

• User Manual

Omega Engineering OMB-SP232/422 Page 1

Card Setup

Card Setup

Card and Socket Services must be loaded on the system prior to installing the
OMB-SP232/422 card. Card and Socket Services are typically supplied by the
PCMCIA slot provider (i.e. the computer manufacturer or the PC adapter
manufacturer).

Socket Services are the lowest level of the PCMCIA Software hierarchy. Socket
Services provide a standard interface to the higher level drivers and isolate the
socket controller’s specific hardware details. Socket Services provide the
‘BIOS’ interface to the socket controller hardware. Socket Services are typically
hidden under Card Services and are rarely directly accessible by application
software.

Card Services provide the interface to application software and drivers. Card
Services are responsible for allocating card resources and ensuring that card
resources do not interfere with other existing system resources. Card Services
are typically implemented as a driver and loaded via CONFIG.SYS during boot
up. Almost all PCMCIA type cards require some sort of software driver. In the
case of the OMB-SP232/422, the generic Card Services driver supplied with
the computer system should provide adequate support for most applications. If
the generic Card Services are not sufficient, an ‘Enabler’ is provided with the
OMB-SP232/422 that will address unique interfacing requirements (i.e. non
standard I/O addressing, different IRQ selection etc.). Please refer to Appendix
C for information on the SEAPC enabler and the diagnostic tool, SSEnable.

The following pages present a few examples of main stream Card and Socket
Services and their implementation (including Windows 95).

Omega Engineering OMB-SP232/422 Page 2

Card Setup

Phoenix Technologies PhoenixCARD Manager Plus™

The PhoenixCARD Manager is shipped with several PC card compatible
Notebook and Laptop computers, as well as IBM PCDOS 6.1.

DEVICE=C:\PCMPLUS\PCMSS.EXE

Socket Services Driver

DEVICE=C:\PCMPLUS\PCMCS.EXE /WAIT=20 /ADDR=C8 /IRQ=10 /FLASH

Card Services

DEVICE=C:\PCMPLUS\PCMMTD.EXE

Memory Technology Driver

DEVICE=C:\PCMPLUS\PCMSCD.EXE /BEEP /COM=4 /RS=4

Phoenix Super Client Driver. Generic enabler to configure I/O Cards

DEVICE=C:\PCMPLUS\PCMATA.SYS /O

ATA Fixed Disk and SRAM cards in a DOS FAT structured format

PhoenixCARD Manager Utility Programs

PCMINFO.EXE Provides information about each PCMCIA socket and

any cards that are inserted
WPCMINFO.CPL Windows version of PCMINFO
PCMVCD.386 Windows Device Driver. Provides support for FAX

and Modem Cards

Omega Engineering OMB-SP232/422 Page 3

Card Setup

SystemSoft CardSoft™ PCMCIA

SystemSoft provides PCMCIA software solutions for a number of notebook and
desktop PC Card adapters.

DEVICE=C:\CARDSOFT\SS365SL.EXE /SIRM=FFFF /SKT=3

Socket Services Driver

DEVICE=C:\CARDSOFT\CS.EXE

Card Services

DEVICE=C:\CARDSOFT\CSALLOC.EXE \CARDSOFT\CSALLOC.INI

Card Services resource allocation

DEVICE=C:\CARDSOFT\CARDID.EXE C:\CARDSOFT\CARDID.INI

Generic Card enabler

CardSoft™ PCMCIA Utility

CARDINFO.EXE Scan PC card slots and lists type and manufacture

of PC CARD

Omega Engineering OMB-SP232/422 Page 4

Installation

Installation

Card and Socket Services must be loaded on the system prior to installing the
OMB-SP232/422 card. The PCMCIA slot provider (i.e. the computer
manufacturer or the PC adapter manufacturer) typically supplies the Card and
Socket Services. These Services must be installed for the OMB-SP232/422 to
operate properly. Refer to the Card Setup section of this manual and your Card
and Services documentation for aid in configuring your Card and Socket
Services.

Connecting the OMB-SP232/422 to the computer requires no special technical
skills. It is installed by simply sliding the card into a PCMCIA Type II
compliant slot on the personal computer. The PCMCIA slot is keyed so that the
OMB-SP232/422 cannot be installed backwards or upside down. The card
should install with a minimal amount of pressure. Do not force the card into the
slot. Forcing the card can result in damage to the OMB-SP232/422 or to the
PCMCIA slot. After the card has been installed into the PCMCIA slot, the I/O
cable should be connected to the card. The cable is keyed to prevent it from
being installed incorrectly.

Omega Engineering OMB-SP232/422 Page 5

Technical Description

Technical Description

The Sealevel OMB-SP232/422 Advanced Communications Board provides a
PCMCIA compliant computer with one high speed Synchronous
/Asynchronous port. The OMB-SP232/422 can be used in a variety of
sophisticated communications applications such as SDLC, HDLC, X.25, Bi­Synchronous, Mono-Synchronous and high speed Asynchronous.

The OMB-SP232/422 utilizes the Zilog 85233 Enhanced Serial
Communications Controller (ESCC). This chip features programmable baud
rate, data format, and interrupt control. Refer to the ESCC Technical Manual,
the Zilog Datacom I/C Handbook and the supplied Diskette for programming
details on the ESCC chip.

Address and IRQ combinations are very flexible and information on selecting
these combinations is available in your Card Services Documentation, and the
supplied Diskette. Please refer to the README.DOC supplied with the OMB-

SP232/422 for any manual updates, corrections and software specific changes.

Connector Pin Assignments
RS-232 (Model OMG-SP232)

Name Pin # Mode

GND Ground 7
RX Receive Data 3 Input
CTS Clear To Send 5 Input
RXC Receive Clock 17 Input
DCD Data Carrier Detect 8 Input
TX Transmit Data 2 Output
RTS Request To Send 4 Output
TSET Transmit Signal Element Timing 24 Output
DTR Data Terminal Ready 20 Output**

** DTR is hard wired “On” or “Active”

Omega Engineering OMB-SP232/422 Page 6

Technical Description

RS-530/422/485 (OMG-SP422)

Name Pin# Mode

GND Ground 7
TDB TX+ Transmit Positive 14 Output
TDA TX- Transmit Negative 2 Output
RTSB RTS+ Request To Send Positive 19* Output
RTSA RTS- Request To Send Negative 4* Output
TSETB TSET+Transmit Signal Element Timing

Positive.

TSETA TSET- Transmit Signal Element Timing

Negative
RDB RX+ Receive Positive 16 Input
RDA RX- Receive Negative 3 Input
CTSB CTS+ Clear To Send Positive 13 Input
CTSA CTS- Clear To Send Negative 5 Input
RXCB RXC+ Receive Clock Positive 9 Input
RXCA RXC- Receive Clock Negative 17 Input
DTRB DTR+ Data Terminal Ready Positive 23 Output**
DTRA DTR- Data Terminal Ready Negitive 20 Output**

Note: The OMB-SP422 is capable of “Point To Point” RS-422/530

communications if the RTS line is asserted prior to transmitting
and released after transmission (RS-485 mode). If RS-485 mode is
not acceptable a simple modification can be accomplished at the
factory that allows “Point to Point” communications regardless of
the RTS line (like RS-232).

11 Output

24 Output

* These signals are only available if the RS-422/530 modification is
performed at the factory.

** DTR is hard wired “On” or “Active”

Omega Engineering OMB-SP232/422 Page 7

Specifications

Specifications

Environmental Specifications

Specification Operating Storage

Temperature

Range

Humidity Range

0º to 50º C

(32º to 122º F)

10 to 90% R.H.

Non-Condensing

Power Consumption

Supply Line Product Rating (mA)

+5 VDC 3610/3611 25 mA

Mean Time Between Failures (MTBF)

Greater than 150,000 hours. (Calculated)

Physical Dimensions

The OMB-SP232/422 conforms to the physical dimensions for all PCMCIA
Type 2 cards as defined in the PCMCIA specification 2.0.

-20º to 70º C

(-4º to 158º F)

10 to 90% R.H.

Non-Condensing

Omega Engineering OMB-SP232/422 Page 8

Appendix A - Troubleshooting

Appendix A - Troubleshooting

An Advanced Communications Board Developers Toolkit Diskette is supplied
with the Omega Engineering adapter and will be used in the troubleshooting
procedures. By using this diskette and following these simple steps, most
common problems can be eliminated without the need to call Technical
Support.

1. Identify all I/O adapters currently installed in your system. This includes

your on-board serial ports, controller cards, sound cards etc. The I/O
addresses used by these adapters, as well as the IRQ (if any) should be
identified.

2. Configure your Omega Engineering adapter so that there is no conflict

with currently installed adapters. No two adapters can occupy the same I/O
address

3. Make sure the Omega Engineering adapter is using a unique IRQ. While

the Omega Engineering adapter does allow the sharing of IRQs, many
other adapters (i.e. SCSI adapters & on-board serial ports) may not.

4. Use the supplied diskette and User Manual to verify that the Omega

Engineering adapter is configured correctly. The supplied diskette contains
a diagnostic program ‘SSDACB’ that will verify if an adapter is configured
properly. This diagnostic program is written with the user in mind and is
easy to use. Refer to the \UTIL\UTIL.TXT file on the supplied diskette for
detailed instructions on using ‘SSDACB’.

The next few pages identify common errors and specific remedies.

Omega Engineering OMB-SP232/422 Page 9

Appendix A - Troubleshooting

Problem: Card Services reports that the PC Card cannot be found.
Possible Cause: The PC Card internal Card Information Structure (CIS) is not

being read correctly by Card Services.

Solution: Use the supplied Client enabler program SeaPC (see page 13) to

install the PC Card.

___________________________________________________________
Problem: Card services or SeaPC successfully allocates the I/O address or IRQ

but the port fails to operate.

Possible Cause: When using the I/O Client enabler program SeaPC, there is

the possibility that the selected I/O address or Interrupt is
already in use by another adapter in the system. Card services
usually check for an available I/O address during installation
or during the boot process. If new hardware or software is
installed in the system that may cause an I/O address or IRQ
conflict, Card Services may not be able to arbitrate the
specified resources.

Solution: Select a different I/O address and IRQ.
___________________________________________________________
Problem: SeaPC will not enable the port at the specified I/O address and

Interrupt.

Possible Cause: Card Services flags certain I/O addresses and Interrupts as

used and will not allow other Client Enabler Driver, like
SEAPC to use them.

Solution: Select a different I/O address and IRQ in the SeaPC setup file.
____________________________________________________________

Omega Engineering OMB-SP232/422 Page 10

Appendix A - Troubleshooting

Problem: The host system will not configure the card or the system shuts down

after the PC Card is inserted.

Possible Cause: Host hardware may not supply enough power to the PCMCIA

slot.

Solution: Check to make sure the PCMCIA slot is rated to supply enough

power to the card. On some palmtop and battery powered systems,
there is a specified limit to the available power a PCMCIA slot can
use. In this case, try installing the card when the system is powered
by the AC adapter.

____________________________________________________________

Problem: Card Services will not respond to card insertion events.
Possible Cause: Memory conflict, External floppy or hard disks, VGA video

cards, SCSI adapters, LAN Network adapters.

Solution: Consult the Card Services documentation for instruction on memory

requirements. If using DOS, it will probably be necessary to exclude
a specified memory range in the CONFIG.SYS file.

____________________________________________________________
Problem: PC Cards that are inserted will not configure properly or Card

Services reports that the card is not recognized.

Possible Cause: Memory shadowing conflicts.
Solution: Make sure that memory shadowing in the PC is disabled in the

regions that memory windows are being used by the host PCMCIA
adapter.

Omega Engineering OMB-SP232/422 Page 11

Appendix B - How To Get Assistance

Appendix B - How To Get Assistance

Please refer to Appendix A - Troubleshooting prior to calling Technical
Support.

1. Read this manual thoroughly before attempting to install the

adapter in your system.

2. When calling for technical assistance, please have your user

manual and current adapter settings. If possible, please have the
adapter installed in a computer ready to run diagnostics.

3. Omega Engineering maintains a Home page on the Internet. Our

home page address is WWW.OMEGA.COM. The latest software
updates, and newest manuals are available via our FTP site that
can be accessed from our home page.

4. Technical support is available Monday to Friday from 8:30 a.m. to

6:00 p.m. Eastern time. Technical support can be reached at (800)
826-6342 x2295

RETURN AUTHORIZATION MUST BE OBTAINED FROM OMEGA
ENGINEERING BEFORE RETURNED MERCHANDISE WILL BE
ACCEPTED. AUTHORIZATION CAN BE OBTAINED BY CALLING
OMEGA ENGINEERING AND REQUESTING A RETURN
MERCHANDISE AUTHORIZATION (RMA) NUMBER.

Omega Engineering OMB-SP232/422 Page 12

Appendix D – Electrical Interface

Appendix C - SeaPC and SSEnable Software

SeaPC

SeaPC is a PCMCIA Version 2.0 compliant DOS client that will enable the

selected PC Cards I/O address and IRQ when inserted. The SeaPC driver is
located on the supplied diskette in the PCMCIA directory. Please refer to the
DOS\PCMCIA\PCMCIA.TXT file for additional information.

Features

• Allows unique addressing and IRQ selection

• Provides the highest level of compatibility with installed systems compliant

with PCMCIA standard 2.0 or higher

When should I use the enabler?

This PC Card Client Enabler is not needed in all situations. SeaPC should be
used if one or more of the following conditions occur:

• The PCMCIA system software (Card and Socket Services) on the host

computer will not configure the cards automatically.

• The PCMCIA system software on the host computer does not supply a

configuration utility to allow the PC Card to be configured automatically.

• The configuration utility with the PCMCIA system software does not

function properly.

SeaPC System Requirements
SeaPC was designed to operate on an IBM PC / AT or compatible computer.

SeaPC requires approximately 3 kilobytes of free conventional memory. If
SeaPC is loaded more than once, an additional 3 kilobytes plus buffer space is

required for each resident copy. SeaPC may be used with memory managers
and loaded into expanded memory. SeaPC requires MS-DOS or PC-DOS
version 3.00 or higher and Card and Socket Services that are compliant with
PCMCIA version 2.00 or higher.

Omega Engineering OMB-SP232/422 Page 13

Appendix D – Electrical Interface

Installation of SeaPC
Executing the Driver
SeaPC is a DOS Terminate and Stay Resident (TSR) program that can be

executed from the DOS command prompt or from the AUTOEXEC.BAT file.
For additional information on the AUTOEXEC.BAT file please refer to the
DOS manual. When SeaPC is executed, a setup file must be specified on the
command line.

Command Line Options

To display the available command line options, Type “SeaPC /?” at the DOS
command prompt. The following should be displayed.

C:>SeaPC /?
Omega Engineering, Inc. SeaPC PC Card I/O Enabler Version 1.00
Omega Engineering Inc. (C) 1994. All rights reserved.

Syntax: SeaPC [/F:file] [/U] [/I] [/V] [/?]

/F:[file] Where file is the configuration file
/U Unconditional installation
/I Display info on resident copies of SeaPC without installing

the enabler
/V Show verbose installation information
/? Display command line options, inhibit driver from loading

Note: That the /F: option is the only required command line parameter. If the

setup file is not located in the default directory, the drive and path must
be specified. The following section details the syntax of the setup file.

Omega Engineering OMB-SP232/422 Page 14

Appendix D – Electrical Interface

Setup File

An example setup file named SeaPC.ini is provided on the diskette. This file
may be edited with the DOS EDIT utility. The following is the syntax for a PC
Card configuration:

[card]

BaseIO = Base I/O address
IRQ = Interrupt Request Signal
Type = Device Type
Interface = Electrical Interface Utilized

Note: All items in italics need to be provided by the user. The following is a

description of each entry in the setup file:

BaseIO Base I/O address in Hexadecimal. Valid ranges are from 0 –

3FF Hex. Some ranges may be reserved by the PCMCIA system
software or occupied by other peripherals in the host computer
system.

IRQ Interrupt Request Signal in Decimal. Valid ranges are from 2-15.

Please note that some IRQs be reserved by the PCMCIA system
software or occupied by other peripherals in the host computer

system.
Type Device Type. Valid option is UART for the 3600 or 3601
Interface Electrical Interface Utilized. Valid options are RS-232, RS-422,

RS-485. ( In the scope of the driver, RS-422 and RS-485 are

viewed as the same value.)

A semicolon (;) at the beginning of a line denotes a comment and the
remainder of that line is ignored. Note the above syntax is an example for one
card. Multiple cards (up to eight) may be configured using the following
syntax:

;First Card
[card]
BaseIO=238
IRQ=10
Type = UART
Interface=RS-232

Omega Engineering OMB-SP232/422 Page 15

Appendix D – Electrical Interface

Using the PC Card on platforms other than ISA

Most PCMCIA systems are based on the standard PC (ISA) architecture,
however in some situations it may be necessary to install the PC Card in a non
ISA system (for example Micro-channel or PCI). For this reason the setup file
has an additional parameter that allows pulse mode interrupts. An ISA system
uses level mode interrupts which is the default setting. To enable pulse mode
interrupts, add the following line to the setup file:

IRQMode = Pulse
Remember this feature will only work on a platform that supports pulse mode

interrupts, and if the Card and Socket services support pulse mode interrupts.

SSEnable

SSEnable is a PCMCIA DOS only utility that will allow the use of your PC

Card without loading card and socket services. The utility is provided for
applications that conflict with card and socket services. Please note that this
utility does NOT use Card and Socket services and greatly reduces the features
of the PCMCIA card. One very important thing to remember about

SSEnable is that it does not provide ‘Hot Swapping’ capability for the
PCMCIA socket. Hot insertion or removal of the PC Card while using
SSEnable could cause damage to the PCMCIA socket and/or the card.

Note: SSEnable will only work with Intel PCIC compatible socket controllers.

The command line parameters for the program are listed by typing SSEnable at
the DOS prompt. The following are example command line entries for the
SSEnable program:

Enable base I/O address 238 hex,-IRQ 5, -memory range d000-dffff, (which has
been excluded from any memory manager and is reserved for the PC Card
attribute memory) and the PC Card is in socket 1

SSEnable /b:238 /i:5 /m:d000 /s:1
To remove the configuration on socket 1 type:
SSEnable /s:1 /r

Omega Engineering OMB-SP232/422 Page 16

Appendix D – Electrical Interface

Appendix D - Electrical Interface

RS-232

Quite possibly the most widely used communication standard is RS-232. This
implementation has been defined and revised several times and is often referred
to as RS-232 or EIA/TIA-232. The IBM PC computer defined the RS-232 port
on a 9 pin D sub connector and subsequently the EIA/TIA approved this
implementation as the EIA/TIA-574 standard. This standard is defined as the

9-Position Non-Synchronous Interface between Data Terminal Equipment and
Data Circuit-Terminating Equipment Employing Serial Binary Data
Interchange. Both implementations are in wide spread use and will be referred

to as RS-232 in this document. 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 due to line conditions and cable lengths. RS-232 often operates at 38.4
Kbps over very short distances. The voltage levels defined by RS-232 range
from -12 to +12 volts. RS-232 is a single ended or unbalanced interface,
meaning that a single electrical signal is compared to a common signal
(ground) to determine binary logic states. A voltage of +12 volts (usually +3 to
+10 volts) represents a binary 0 (space) and -12 volts (-3 to -10 volts) denotes a
binary 1 (mark). The RS-232 and the EIA/TIA-574 specification defines two
type of interface circuits, Data Terminal Equipment (DTE) and Data Circuit­Terminating Equipment (DCE). The Omega Engineering adapter is a DTE
interface.

RS-422

The RS-422 specification defines the electrical characteristics of balanced
voltage digital interface circuits. RS-422 is a differential interface that defines
voltage levels and driver/receiver electrical specifications. On a differential
interface, logic levels are defined by the difference in voltage between a pair of
outputs or inputs. In contrast, a single ended interface, for example RS-232,
defines the logic levels as the difference in voltage between a single signal and
a common ground connection. Differential interfaces are typically more
immune to noise or voltage spikes that may occur on the communication lines.
Differential interfaces also have greater drive capabilities that allow for longer
cable lengths. RS-422 is rated up to 10 M bps and can have cabling 4000 feet
long. RS-422 also defines driver and receiver electrical characteristics that will
allow 1 driver and up to 32 receivers on the line at once. RS-422 signal levels
range from 0 to +5 volts. RS-422 does not define a physical connector.

Omega Engineering OMB-SP232/422 Page 17

Appendix D – Electrical Interface

RS-485

RS-485 is backwardly compatible with RS-422; however, it is optimized for
partyline or multi-drop applications. The output of the RS-422/485 driver is
capable of being Active (enabled) or Tri-State (disabled). This capability
allows multiple ports to be connected in a multi-drop bus and selectively polled.
RS-485 allows cable lengths up to 4000 feet and data rates up to 10 M bps. The
signal levels for RS-485 are the same as those defined by RS-422. RS-485 has
electrical characteristics that allow for 32 drivers and 32 receivers to be
connected to one line. This interface is ideal for multi-drop or network
environments. RS-485 tri-state driver (not dual-state) will allow the electrical
presence of the driver to be removed from the line. Only one driver may be
active at a time and the other driver(s) must be tri-stated. The output modem
control signal RTS controls the state of the driver. Some communication
software packages refer to RS-485 as RTS enable or RTS block mode transfer.
RS-485 can be cabled in two ways, two wire and four wire mode. Two wire
mode does not allow for full duplex communication, and requires that data be
transferred in only one direction at a time. For half-duplex operation, the two
transmit pins should be connected to the two receive pins (Tx+ to Rx+ and Tx­to Rx-). Four wire mode allows full duplex data transfers. RS-485 does not
define a connector pin-out or a set of modem control signals. RS-485 does not
define a physical connector.

RS-530

RS-530 (a.k.a. EIA-530) compatibility means that RS-422 signal levels are met,
and the pin-out for the DB-25 connector is specified. The EIA (Electronic
Industry Association) created the RS-530 specification to detail the pin-out, and
define a full set of modem control signals that can be used for regulating flow
control and line status. The RS-530 specification defines two types of interface
circuits, Data Terminal Equipment (DTE) and Data Circuit-Terminating
Equipment (DCE). The Omega Engineering adapter is a DTE interface.

Omega Engineering OMB-SP232/422 Page 18

Appendix E - Compliance Notices

Appendix E - Compliance Notices

Federal Communications Commission Statement

FCC - This equipment has been tested and found to comply with the limits for
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in such case the user will
be required to correct the interference at his own expense.

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 the European Commission.

To obey these directives, the following European standards must be met:

• EN55022 Class A - “Limits and methods of measurement of radio

interference characteristics of information technology equipment”

• EN50082-1 - “Electromagnetic compatibility - Generic immunity

standard” Part 1: Residential, commercial and light industry

• EN60950 (IEC950) - “Safety of information technology

equipment, including electrical business equipment”

Warning
This is a Class A Product. In a domestic environment this product may
cause radio interference in which case the user may be required to take
adequate measures.

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.

Omega Engineering OMB-SP232/422 Page 19

Warranty

Warranty

Omega Engineering, Inc. warrants this product to be in good working order for
a period of one year from the date of purchase. Should this product fail to be in
good working order at any time during this period, Omega Engineering will, at
it's option, replace or repair it at no additional charge except as set forth in the
following terms. This warranty does not apply to products damaged by misuse,
modifications, accident or disaster.

Omega Engineering assumes no liability for any damages, lost profits, lost
savings or any other incidental or consequential damage resulting from the use,
misuse of, or inability to use this product. Omega Engineering will not be liable
for any claim made by any other related party.

RETURN AUTHORIZATION MUST BE OBTAINED FROM OMEGA
ENGINEERING BEFORE RETURNED MERCHANDISE WILL BE
ACCEPTED. AUTHORIZATION CAN BE OBTAINED BY CALLING
OMEGA ENGINEERING AND REQUESTING A RETURN
MERCHANDISE AUTHORIZATION (RMA) NUMBER.

Omega Engineering, Incorporated
PO Box 4047
One Omega Drive
Stamford, CT 06907
[phone] FAX: [phone]

email: Internet: [email protected]
WWW Site: www.omega.com

Technical Support is available from 8:30 a.m. to 6 p.m. Eastern time.

Monday - Friday

Trademarks

Omega Engineering, Incorporated acknowledges that all trademarks referenced
in this manual are the service mark, trademark, or registered trademark of the
respective company.

OMB-SP232/422 is a trademark of Omega Engineering, Incorporated.

Omega Engineering OMB-SP232/422 Page 20