High Speed Industrial USB Serial Adapters
Add standard serial ports via USB 2.0 without replacing peripheral
hardware or application software
For over 20 years, Quatech has been
known to help you
Connect with
Reliability.
As we continue as an
industry leader an objective to meet our
customers requirements, our high
performance device connectivity line
expands to offer hardened industrial
products. The next generation Quatech
Industrial USB Serial Adapter hits
speeds of up to 921.6 kbps, 2kbyte FIFO
and hardware and software flow control.
Quatech
USB
Serial
Adapters
enumerate themselves as standard
COM ports that are compatible with all
standard RS-232 or RS-232/422/485
devices and software created for them.
With 3000 VDC to DC optical isolation,
the
QSU2-540IS
is
ideal
for
implementing USB-to-serial networks in
factories, power plants and other
potentially harsh industrial environments
with power surges.
Quatech Industrial USB to Serial
adapters are configured with DB9s (RS-
232) and terminal block (RS-422/485)
connections for convienent integration
into data systems. The RS-232 and RS-
422/485 ports are seperate allowing
signals to be independent and mixed.
The unit utilizes an auto detect feature
that recognizes which data port
configuration is active.
While the units are bus powered, a DC
voltage power input is avaialble via
terminal blocks to provide power output
in RS-232 mode on pin 9 to power
external serial devices. LEDs indicators
for power, USB ready and data (transmit
and receive per port) give visual
indication of proper function.
KEY FEATURES
4 Independent Serial Ports
RS-232 or RS-232/422/485 MEI with
Terminal Block Connectors
Compatible with USB 2.0/ USB 1.1
Plug-and-play capability
Devices enumerate themselves as
standard COM ports
Speeds up to 921.6 kbps
High speed UARTs with 1KB FIFOs to
boost data rates
Full modem control and hardware and
software flow control
Bus powered: no external power required,
External power input available by terminal
block to provide optional VDC out on Pin
9 in RS-232 operation
Windows 2000/XP/Vista/Windows 7, Linux
RoHS compliant
NEW!
U3000 V DC to DC Optical
Isolation available (QSU2-540IS)
LED Indicators (Power, USB Ready, Data
Transmit and Recieve per Port)
1 year warrantynty
Connect Industrial serial peripherals
with Ruggedized USB 2.0 Serial
Multiport Adapters
If speed, expansion, reliability and
support are what you’re looking for in a
USB Serial Adapter to handle harsh
conditions and environments, think
Quatech Industrial USB 2.0 to Serial
adapters.
With Quatech’s USB 2.0 based
adapters, you can now broaden the
range of external peripherals used on
your computer at higher speed rates .
The USB 2.0 has more bandwidth that
allows higher data rates on all of the
serial ports for more efficiency.
The new High Speed USB Serial
Adapter line adds the COM port(s) via its
USB connection and is compatible with
new and legacy RS-232 or RS-
232/422/485 devices. The Industrial
USB Serial Adapters are the ideal
solution for a variety of applications
including industrial automation / control,
material handling / logistics and
laboratory test and measurement in
addition
to
other
demanding
applications where a robust and
ruggedized solution is required.
Rev C
2/2008
5675 Hudson Industrial Parkway * Hudson, OH 44236
1.800.553.1170 * +1 330.655.9000 * www.quatech.com
HIGH SPEED USB 2.0 SERIAL ADAPTER SPECIFICATIONS
Ordering Information
Model
QSU2-540
Ports
4
Interface
RS-232/422/485 MEI
with USB cable
RS-232/422/485 MEI with
USB cable and 3000V DC
to DC isolation
USB Ports Required
QSU2:
1, USB type B
Connectors
RS-232 - DB-9 male
RS-422/485 - Terminal Block
4 Ports of RS-232 and 4 Ports of RS-422/485 with
individual connections. Auto Detect feature allows any
combination of communication
Signals
RS-232: TXD, RXD, RTS, CTS, DTR, DSR, DCD,
GND, RI, Optional VDC Power output
RS-422: RXD+, RXD-, TXD+, RXD-
RS-485: Data+, Data-
OS Support
Virtual Comm Port Utility
Windows 2000/XP/Vista/Windows 7 and Linux support
Data Rate
Up to 921.6 kbps (max)
Serial Ports Provided
QSU2: 4 Independent RS-232/422/485 Auto Detect
UARTS
2k-byte FIFOs for transmit and receive
Transceiver (RS-232/422/485)
MAX491 or compatible
Differential Driver Output (50Ù Load):
+2V (min), +3.3V (max)
Differential Driver Output (27Ù Load):
+1.5V (min), +3.3V (max)
Power Requirements
Bus-powered device, no external power supply required,
External power input provided by terminal block to
provide optional VDC power output on Pin 9 in RS-232
operation
Enclosure
Ruggedized Metal box
Size
Dimensions 110 x 180 x 25 mm (W x D x H)
Certifications
CE, FCC Class B, RoHS & WEEE Compliant
Surge Suppression:
RS-422/485 mode- Standard Over current and Surge
protection applied to each line that is capable of
sustaining up to 40A peak, 8 x 20ìs transient surges, a
clamping voltage of 30V and a peak energy dissipation
of 0.1 Joules
IS Option: Model QSU2-100IS
3000 VDC transmit/recieve optical isolation protection
Environment
Operating:
0° to 70°C
Storage:
-50° to 80° C
Humidity:
10% to 90%
QSU2-540IS
4
Bus Interface
USB 2.0 High Speed
Industrial Data Collection
Model QSU2-540IS
Quatech QSU2-540IS Industrial four port USB to RS-232
Serial adapters with optical isolation are being used as part
of a real-time reaction analysis system. The system is
designed to both identify reactants, products and
intermediates in a chemical reaction and to track the course
of the reaction with a single automated system. The system
is comprised of four reactors, each of which can be
individually controlled and conditioned, with a probe
integrated into the base of each. Modulated infrared radiation
is passed to each of the reactors in turn, and a spectrum is
measured and passed to a Windows 7 based PC via a serial
to USB interface. Up to thirty spectra per hour are obtained
from each reactor and used by the system to derive
concentration profiles. After much testing, our customer found
that the added protection of Quatech's isolation/suppression
package was the only USB to Serial solution that would work
reliably and protect their expensive test systems.
Quatech's QSU2-540IS is used by a major natural gas
producer to implement a well monitoring system. Each well is
monitored by an electronic gas meter. Each group of wells
uses telemetry and a master radio to transmit data. Each
master radio requires a dedicated serial port on the polling
computer, and Quatech's QSU2-540IS provides the additional
serial ports required.
Signal Connections
RS-422/485, USB and Power Input Connections
5675 Hudson Industrial Parkway * Hudson, OH 44236
Rev. C
2/2008
1.800.553.1170 * +1 330.655.9000 * www.quatech.com
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