B&B Electronics ESU2-400 User Manual
SSU2/DSU2/QSU2/ESU2-100/400
USB-to-Serial Adapter
User’s Manual
SSU2/DSU2/QSU2/ESU2 - 100/400
1-, 2-, 4-, and 8 serial ports
User’s Manual P/N: 940-0191-101
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USB-to-Serial Adapter User’s Manual Table of contents
Table of contents
Table of contents ------------------------------------------------------------------------------------------------------------------ i
Figures ------------------------------------------------------------------------------------------------------------------------ ii
Tables ------------------------------------------------------------------------------------------------------------------------- ii
Introduction ----------------------------------------------------------------------------------------------------------------------- 1
System requirements ----------------------------------------------------------------------------------------------------- 1
Features ---------------------------------------------------------------------------------------------------------------------- 2
Multiple Electrical Interface (MEI) ----------------------------------------------------------------------------- 2
Understanding the LEDs ------------------------------------------------------------------------------------------- 2
IND option - surge suppression upgrade ---------------------------------------------------------------------- 2
Installing the USB-to-Serial Adapter -------------------------------------------------------------------------------------- 3
Installing under Windows XP ------------------------------------------------------------------------------------------ 3
Installing under Windows 2000 --------------------------------------------------------------------------------------- 7
Uninstalling under Windows 2000 or Windows XP ------------------------------------------------------------- 11
Making external connections ----------------------------------------------------------------------------------------------- 12
RS-232 serial connections ---------------------------------------------------------------------------------------------- 12
RS-422/485 serial connections ----------------------------------------------------------------------------------------- 13
Testing DB-9 serial ports in HyperTerminal --------------------------------------------------------------------- 14
Running Hyperterminal ------------------------------------------------------------------------------------------- 14
Using Device Manager -------------------------------------------------------------------------------------------------------- 15
Accessing Device Manager --------------------------------------------------------------------------------------------- 15
Exploring Device Manager screens ---------------------------------------------------------------------------------- 15
Windows XP and 2000 --------------------------------------------------------------------------------------------- 15
Setting advanced options ----------------------------------------------------------------------------------------------- 21
Operating Mode (MEI adapters only) ------------------------------------------------------------------------- 21
Receiver active… (MEI adapters only) ------------------------------------------------------------------------ 22
AuxOut/AuxIn (MEI adapters only) ---------------------------------------------------------------------------- 23
Low-Latency Mode -------------------------------------------------------------------------------------------------- 23
Troubleshooting ----------------------------------------------------------------------------------------------------------------- 24
Appendix A ----------------------------------------------------------------------------------------------------------------------- 25
Specifications --------------------------------------------------------------------------------------------------------------- 25
Appendix B ----------------------------------------------------------------------------------------------------------------------- 27
Warranty information --------------------------------------------------------------------------------------------------- 27
Page i Rev 1.01 (February 2007)
Table of Contents USB-to-Serial Adapter User’s Manual
Figures
Figure 1 - Windows XP Found new hardware prompt .............................................................................. 3
Figure 2 - Windows XP Choose your search and installation options prompt ........................................ 4
Figure 3 - Windows XP Searches drivers prompt ...................................................................................... 5
Figure 4 - Windows XP Wizard installs the software ............................................................................... 6
Figure 5 - Windows XP Finished installing prompt .................................................................................. 6
Figure 6 - Windows 2000 Found new hardware prompt ........................................................................... 7
Figure 7 - Windows 2000 Search for or display drivers prompt ............................................................... 8
Figure 8 - Windows 2000 Locate driver files prompt ................................................................................ 8
Figure 9 - Windows 2000 Finished searching for driver files prompt ...................................................... 9
Figure 10 - Windows 2000 Finished installing prompt ........................................................................... 10
Figure 11 – Device Manager ..................................................................................................................... 11
Figure 12 - DB-9 connector pinout ........................................................................................................... 12
Figure 13 - Use of DTEs and DCEs in a communication link ................................................................ 12
Figure 14 - Cabling requirements for RS-232 devices ............................................................................. 13
Figure 15 - Windows XP/2000 Device Manager properties, General tab .............................................. 16
Figure 16 - Windows XP/2000 RS-232/422/485 Advanced Options dialog window ............................... 17
Figure 17 - Windows XP/2000 RS-232 Advanced Options dialog window ............................................. 17
Figure 18 - Windows XP/2000 USB serial port, Port settings box ......................................................... 18
Figure 19 - Windows XP/2000 USB serial port, Advanced settings box ................................................ 19
Figure 20 - Windows XP/2000 USB serial port properties, Driver box .................................................. 19
Figure 21 - Windows XP/2000 USB serial port, Driver file details box ................................................. 20
Tables
Table 1 - Device port and connection options ............................................................................................ 1
Table 2 - LED codes ..................................................................................................................................... 2
Table 3 - Product series summary .............................................................................................................. 2
Table 4 - RS-232 signals on DB-9 connector ............................................................................................ 12
Table 5 - RS-422/485 signals on DB-9 connector ..................................................................................... 13
Page ii Rev 1.01 (February 2007)
USB-to-Serial Adapter User’s Manual Introduction
Device
Ports
Connection
Device
Ports
Connection
Note: These products comply
fully with USB Specification
version 2.0. They will also
operate over slower USB 1.1
nnections at a slightly
400” designation
indicates an “MEI” device.
ym for
“Multiple Electrical Interface.”
Introduction
This User’s Manual describes how to setup and install your USB-toSerial Adapter.
The SSU2-100, DSU2-100, QSU2-100 and ESU2-100, respectively,
co
reduced performance level.
Note: The “-
provide one, two, four and eight independent RS-232 serial interfaces
to the host PC via the Universal Serial Bus (USB) port.
The DSU2-400, QSU2-400 and ESU2-400, respectively, provide two,
four and eight independent asynchronous serial interfaces via the
USB port. Each of these interfaces can be used as desired for RS-232,
RS-422 or RS-485 communications.
Table 1 - Device port and connection options
MEI is an acron
The interface is softwareselectable for each serial port.
System requirements
SSU2-100 1 RS-232
DSU2-100 2 RS-232 DSU2-400 2 RS-232/422/485
QSU2-100 4 RS-232 QSU2-400 4 RS-232/422/485
ESU2-100 8 RS-232 ESU2-400 8 RS-232/422/485
Each adapter uses high-speed UARTs and deep FIFOs, allowing each
channel to obtain data rates up to 921.6 kbps. The adapters are
powered over their USB connection (bus-powered), eliminating the
need for an external power supply. The adapters are Plug-and-Play
devices and require no hardware configuration.
The USB-to-Serial adapters are supported under the Windows 2000/XP
(and later) and Linux operating systems. One USB port is required to
connect the adapter to your computer. You can use either a built-in
USB port or an add-in USB host adapter. We recommend the use of a
USB 2.0 port for best performance. Contact our sales department for
details on current software offerings.
Rev 1.01 (February 2007) Page 1
Introduction USB-to-Serial Adapter User’s Manual
Red
Port is configured for RS-232.
Green
Port is configured for RS-422/485.
Part number
IND option
Part number
IND option
SSU2-100IND
yes
QSU2-100IND
yes QSU2-400IND
yes
ESU2-100
no ESU2-400
no
Features
Multiple Electrical Interface (MEI)
MEI adapters (model numbers ending with “-400”) are shipped with a
factory default of all serial ports set for RS-232 connections. Each
port can be individually configured for RS-232, RS-422/485 fullduplex, or RS-422-485 half-duplex operation.
Understanding the LEDs
The LEDs inform you of the configuration of the adapter’s serial
ports. Each serial port has one associated LED located on the back
panel to the right of the port’s DB-9 connector. The following table
lists the possible states of the LEDs and their meaning.
Table 2 - LED codes
LED color Meaning
IND option - surge suppression upgrade
We offer an IND option, or surge-suppression board upgrade, to
provide improved performance and industrial-grade reliability.
The IND option provides essential protection for reliable use in an
industrial environment. Each communication line has a surge
suppressor capable of sustaining up to 40-A, 20-μs peak transient
surges, a clamping voltage of 30 V (15.1 V for 200/300 units), and a
peak energy dissipation of 0.1 Joules.
Table 3 - Product series summary
SSU2-100 no
DSU2-100 no DSU2-400 no
DSU2-100IND yes DSU2-400IND yes
QSU2-100 no QSU2-400 no
Page 2 Rev 1.01 (February 2007)
ESU2-100IND yes ESU2-400IND yes
USB-to-Serial Adapter User’s Manual Installing the software
Step
Procedure
Description
This is the connector located on the back of
Step
Procedure
Description
Figure 1 illustrates the
ows XP Found new
hardware prompt. The Found
New Hardware Wizard
launches automatically when
Caution! Be sure to allow
the installation process to
Installing the USB-to-Serial Adapter
This section explains how to install the USB-to-Serial adapter under
different operating systems. Please locate and follow the procedure
for your computer’s operating system.
finish without interruption.
Installing under Windows XP
The USB-to-Serial adapter includes Windows device drivers that
enable the serial ports to appear to Windows as standard COM ports.
Follow these steps to install the adapter under Windows XP.
Step 1 Turn on the power to your computer
system.
Step 2 Plug the wide flat end of the USB cable
into the downstream connector.
Step 3 Plug the square end of the USB cable into
the back of the USB-to-Serial adapter.
Figure 1 - Windows XP Found new hardware prompt
Wind
you first plug in the USB-toSerial adapter.
This is the system in which the device is to
be installed.
the computer or USB hub.
Windows tells you that it has found new
hardware and launches the Found New
Hardware Wizard.
Step 4 Insert the installation CD into your CD-
ROM drive.
Step 5 Select the “Advanced” option. Click the
Next button.
Rev 1.01 (February 2007) Page 3
This is the CD that shipped with the
product.
The Choose your search and installation
options prompt displays.
Installing the software USB-to-Serial Adapter User’s Manual
Step
Procedure
Description
Figure 2 illustrates the
Windows XP Choose your
search and installation
Figure 2 - Windows XP Choose your search and installation options prompt
prompt.
Step 6 Select Search removable media (floppy,
CD-ROM).
If necessary, you can also select the
Include this location in the search:
option and browse to the location with
the USB-to-Serial drivers.
The complete path is E:\Serial Port
Adapters\Drivers\Windows 98, Me,
2000, XP for USB.
Replace E:\ with your CD-ROM
designation
Step 7 Click the Next button. Windows searches for drivers for the
adapter.
Page 4 Rev 1.01 (February 2007)
USB-to-Serial Adapter User’s Manual Installing the software
Step
Procedure
Description
Figure 3 illustrates the
Windows XP Searches for
drivers prompt. When the
Serial drivers, this screen
disappears.
Figure 3 - Windows XP Searches drivers prompt
Wizard finds the USB-to-
Step 8 The Wizard locates and starts to install
the necessary software.
The Wizard installs the software prompt
displays, followed by the Finished
installing prompt.
Rev 1.01 (February 2007) Page 5
Installing the software USB-to-Serial Adapter User’s Manual
Step
Procedure
Description
Figure 5 shows the Windows
XP Finished installing
prompt. It indicates that the
adapter has been successfully
Figure 4 - Windows XP Wizard installs the software
installed.
Figure 5 - Windows XP Finished installing prompt
Step 11 Press the Finish button to continue. The USB adapter installation is
Page 6 Rev 1.01 (February 2007)
complete.
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