QSU2-540 Quatech, QSU2-540 Datasheet - Page 2

• Manufacturer Part Number: QSU2-540
• Description: Interface Modules & Development Tools Ind USB Serl Adapter USB 4 prt RS-xxx MEI
• Manufacturer: Quatech

Specifications of QSU2-540

• Interface Type: RS-232, RS-422/485, USB
• Operating Supply Voltage: 3.3 V
• Product: Interface Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rev. C
2/2008
QSU2-540IS
QSU2-540
HIGH SPEED USB 2.0 SERIAL ADAPTER SPECIFICATIONS
Ordering Information
Bus Interface
USB 2.0 High Speed
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
Model
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.
Industrial Data Collection
Ports
Model QSU2-540IS
4
4
RS-232/422/485 MEI
with USB cable
RS-232/422/485 MEI with
USB cable and 3000V DC
to DC isolation
Interface
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-
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)
5675 Hudson Industrial Parkway * Hudson, OH 44236
1.800.553.1170 * +1 330.655.9000 * www.quatech.com
Signal Connections
RS-422/485, USB and Power Input Connections
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%
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