Omega Engineering OMG-USB-232-4 Manual de usuario
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User’s Guide
OMG-USB-232-4
Four Port RS-232 to USB Adaptor
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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
WHAT’S INCLUDED................................................................................1
INSTALLATION ..........................................................................2
OPERATING SYSTEM INSTALLATION.................................................2
SYSTEM INSTALLATION........................................................................2
CONFIGURATION........................................................................4
ELECTRICAL INTERFACE SELECTION.................................................4
TECHNICAL DESCRIPTION.........................................................5
FEATURES................................................................................................5
RS-232 (DB-9 Male)........................................................................5
SPECIFICATIONS ........................................................................6
ENVIRONMENTAL SPECIFICATIONS....................................................6
MANUFACTURING..................................................................................6
POWER CONSUMPTION..........................................................................6
MEAN TIME BETWEEN FAILURES (MTBF).......................................6
PHYSICAL DIMENSIONS..........................................................................6
APPENDIX A -TROUBLESHOOTING...........................................7
APPENDIX B -HOW TO GET ASSISTANCE................................8
APPENDIX C -ELECTRICAL INTERFACE.....................................9
RS-232.......................................................................................................9
APPENDIX D -ASYNCHRONOUS COMMUNICATIONS ...............10
APPENDIX E -COMPLIANCE NOTICES .....................................11
FEDERAL COMMUNICATIONS COMMISSION STATEMENT............11
CANADIAN RADIO INTERFERENCE REGULATIONS.........................11
EMC DIRECTIVE STATEMENT...........................................................12
Figure 1 -Asynchronous Communications Bit Diagram.............................10
Introduction
OMG-USB-232-4Page 1
Introduction
Overview
The OMG-USB-232-4equips the PC with 4 USB to RS-232 Asynchronous serial
ports providing a versatile interface for common serial needs. The advantage of
this product over more traditional approaches is that it does not 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-232-4 is shipped with the following items. If any of these items
is missing or damaged, contact the supplier.
•OMG-USB-232-4 USB to RS-232 Serial I/O Adapter
•USB Cable Part Number CA179 for Connecting to Upstream
Host/Hub
•Software
Installation
OMG-USB-232-4Page 2
Installation
Operating System Installation
Choose Install Software at the beginning of the CD and install SeaCOM.
System Installation
The screen captures below are taken from a Windows 98 installation. Your
particular operating system may differ slightly from what is shown based on your
version of Windows.
The OMG-USB-232-4 can be connected to any upstream type “A” port either at
the PC host or an upstream hub. The OMG-USB-232-4 is hot pluggable,
meaning there is no need to power down your computer prior to installation.
Connect the OMG-USB-232-4to an upstream host or hub.
The New Hardware Foundwizard will now proceed to locate the appropriate
drivers. These drivers were installed during the SeaCOM software setup
procedure. Once the drivers are found a new window will pop up indicating the
installation of each of the four new ports.
If you view the system’s Device Manager, you should have new “COM” ports in
the Ports (COM & LPT) Device Class. This is shown on the following page.
Installation
OMG-USB-232-4Page 3
You can access your new COM: ports by using the assigned COM: identifiers as
shown above. In this case, it is COM3, 4, 5 and 6. However, this assignment will
vary from system to system. At this point, the hardware is recognized and ready
to use.
Configuration
OMG-USB-232-4Page 4
Configuration
Electrical Interface Selection
Each of the four ports on the OMG-USB-232-4 is pre-configured as an RS-232
interface.
Simply install the included software and connect the adapter to your USB port.
The device is immediately recognized by the system. At that point, connect the
adapter to your target device (i.e. modem, serial printer, scale, bar code, etc.).
Now your non-USB peripherals can have the same connection simplicity and
ease of use as USB peripherals.
Technical
OMG-USB-232-4Page 5
Technical Description
The OMG-USB-232-4utilizes four USB UARTs. These chips feature
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.
Features
•Hot pluggable device that does not require opening the case
•No system resources are required (i.e. I/O ports or IRQ’s)
•LED status indicators for USB Enabled and port activity
RS-232 (DB-9 Male)
Signal Name Pin # Mode
GND Ground 5
TX Transmit Data 3Output
RTS Request To Send 7Output
DTR Data Terminal Ready 4Output
RXReceive Data 2Input
CTS Clear To Send 8Input
DSR Data Set Ready 6Input
DCD Data Carrier Detect 1Input
RI Ring Indicator 9Input
Specifications
OMG-USB-232-4Page 6
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
This device is a high power USB device. It must be plugged into the USB root
hub or a self powered hub capable of supplying 500 mA per port.
Mean Time Between Failures (MTBF)
Greater than 150,000 hours. (Calculated)
Physical Dimensions
Package Length 7.06 inches (17.93 cm)
Package Width 5.32 inches (13.51 cm)
Package Height 1.50 inches (3.81 cm)
Appendix A –Troubleshooting
OMG-USB-232-4Page 7
AppendixA -Troubleshooting
Serial Utility test software is supplied with the adapter and will be used in the
troubleshooting procedures. Using this software and following these simple
steps, most common problems can be eliminated without the need to call
Technical Support.
1. If your adapter isn’t working, first check to make sure that USB support is
enabled in the System BIOS and it is functioning properly in the operating
system. This can be done by using either the Windows 98/ME or Windows
2000 Device Manager.
2. Ensure that the software has been installed on the machine so that the
necessary files are in place to complete the installation.
3. When the OMG-USB-232-4is configured properly, the USB Enabled LED
(E) will be lit. This should allow you to use the WinSSD utility and the
supplied loopback plug to check communications. The supplied loopback
plug connects TD to RD. If you decide to test the Modem Control Signals, a
full pin loopback plug will be required. Details on loopback plugs are
included on WinSSD. Contact Omega if you need further assistance
4. When testing the OMG-USB-232-4in loopback mode, you should see the
port LED’s flashing as well as seeing echoed data on the screen. The
loopback test first transmits a HEX pattern, 55AA, and then a ASCII string
of data. If this test passes, then the OMG-USB-232-4is ready for use in
your application.
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