Omega RS-232 Manual de usuario
www.omega.com
e-mail: [email protected]
User’s Guide
OMG-USB-232-1
Single Port RS-232 to USB Adaptor
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It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that
apply. OMEGA is constantly pursuing certification of its products to the European New Approach
Directives. OMEGA will add the CE mark to every appropriate device upon certification.
The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts
no liability for any errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.
Contents
INTRODUCTION..........................................................................1
OVERVIEW................................................................................................1
WHAT’S INCLUDED................................................................................1
INSTALLATION ..........................................................................2
OPERATING SYSTEM INSTALLATION.................................................2
SYSTEM INSTALLATION........................................................................2
TECHNICAL DESCRIPTION.........................................................6
FEATURES................................................................................................6
CONNECTOR PIN ASSIGNMENTS (DB25 MALE).................................6
SPECIFICATIONS ........................................................................7
ENVIRONMENTAL SPECIFICATIONS....................................................7
MANUFACTURING..................................................................................7
POWER CONSUMPTION..........................................................................7
MEAN TIME BETWEEN FAILURES (MTBF).......................................7
PHYSICAL DIMENSIONS..........................................................................7
APPENDIX A -TROUBLESHOOTING...........................................8
APPENDIX B -HOW TO GET ASSISTANCE................................9
APPENDIX C -ELECTRICAL INTERFACE...................................10
RS-232.....................................................................................................10
APPENDIX D -ASYNCHRONOUS COMMUNICATIONS ...............11
APPENDIX E -COMPLIANCE NOTICES .....................................12
FEDERAL COMMUNICATIONS COMMISSION STATEMENT............12
EMC DIRECTIVE STATEMENT...........................................................12
Figure 1 -Asynchronous Communications Bit Diagram.............................11
Introduction
OMG-USB-232-1Page 1
Introduction
Overview
The OMG-USB-232-1equips the PC with 1 USB to RS-232 Asynchronous serial
port providing a versatile interface for common RS-232 needs (i.e. modem, mouse
and plotter). The advantage of this product over more traditional approaches is
that it doesn’t require opening the computer case, nor does it require resources
such as I/O ports or IRQ’s. It does require a system that supports USB both in
terms of hardware and operating system.
What’s Included
The OMG-USB-232-1 is shipped with the following items. If any of these items
is missing or damaged, contact the supplier.
•OMG-USB-232-1 USB to RS-232 Serial I/O Adapter
•USB Cable Part Number CA179 for Connecting to Upstream
Host/Hub
•Software
•User Manual
Installation
OMG-USB-232-1Page 2
Installation
Operating System Installation
Choose Install Software at the beginning of the CD and select the Serial I/O
software drivers and install SeaCOM.
System Installation
The screen captures below are taken from a Windows ME installation. Your
particular operating system may differ slightly from what is shown based on your
version of Windows.
The OMG-USB-232-1 can be connected to any Upstream Type “A” port either
at the PC host or an Upstream Hub. The OMG-USB-232-1 is hot-pluggable,
meaning there is no need to power down your computer prior to installation. The
OMG-USB-232-1requires no user hardware configuration since there are no
jumpers present on the card.
1. Connect OMG-USB-232-1to an Upstream Host or Hub.
This indicates that the system has recognized the new device and will now
proceed to locate a driver.
Installation
OMG-USB-232-1Page 3
Since you have already installed the software by running “Setup”, simply click
“Next” to proceed. The drivers that were installed during setup will automatically
be used to configure the adapter.
Installation
OMG-USB-232-1Page 4
Windows has now located a driver and installed the software. Click “Finish” to
proceed. You should see one more “New Hardware Found”, indicating the actual
port being created. If you view your systems’ Device Manager at this point, you
should have a new “COM” port in the Ports (COM & LPT) Device Class. It
should look similar to the screen shot on the following page.
Installation
OMG-USB-232-1Page 5
You can access your new COM: port by using the assigned COM: identifier
shown above. In this case, it is COM4: but this assignment will vary from system
to system. At this point, the hardware is recognized. To verify operation use the
supplied WinSSD diagnostic utility. WinSSD can be found in the Start,
Programs group.
Technical Description
OMG-USB-232-1Page 6
Technical Description
The OMG-USB-232-1utilizes a USB UART. This chip features programmable
baud rate, data format, 128 byte Dual Port TX Buffer, and 384 byte Dual Port RX
Buffer. The RS-232 transceiver supports data rates up to 460.8K baud. Refer to
Appendix C for cable length limitations.
Features
•Hot-Pluggable device that doesn’t require opening the case
•No system resources are required (i.e. I/O ports or IRQ’s)
•LED status indicators for “USB Enabled”, “TD”, and “RD”
Connector Pin Assignments (DB25 Male)
Name Pin # Mode
TD Transmit Data 2Output
RTS Request To Send 4Output
DTR Data Term Ready 20 Output
GND Ground 7
RD Receive Data 3Input
DCD Data Carrier Detect 8Input
DSR Data Set Ready 6Input
CTS Clear To Send 5Input
RI Ring Indicator 22 Input
Note:These assignments meet EIA/TIA/ANSI-574 DTE specifications for DB-25
type connectors.
Specifications
OMG-USB-232-1Page 7
Specifications
Environmental Specifications
Specification Operating Storage
Temperature Range
0º to 50º C
(32º to 122º F) -20º to 70º C
(-4º to 158º F)
Humidity Range 10 to 90% R.H.
Non-Condensing 10 to 90% R.H.
Non-Condensing
Manufacturing
•All 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
Supply line +5 VDC
Rating 50 mA
Mean Time Between Failures (MTBF)
Greater than 150,000 hours. (Calculated)
Physical Dimensions
Package Length 3.8 inches (9.66 cm)
Package Width 2.3 inches (5.84 cm)
Package Height 1.0 inches (2.54 cm)
Este manual sirve para los siguientes modelos
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