Industrial USB 2.0 Serial Adapters by Quatech

DIRECT FROM QUATECH

Industrial RS-232/422/485

Industrial USB to 4 port RS-232/422/485 MEI serial adapter

QSU2-540IS

Industrial USB to 4 port RS-232/422/485 serial adapter with Optical Isolation

Quatech Industrial USB to Serial adapters provide secure connections in a ruggedized metal box to meet demanding applications and withstand harsh environments. You can now broaden the range of external serial peripherals at higher data rates with USB 2.0 Serial Adapters. USB 2.0 has more bandwidth that allows higher data rates on multiple serial ports and improves overall system efficiency.

The new Industrial High Speed USB Serial Adapter product line gives your laptop or workstation the ability to communicate between a USB port and up to four RS- 232 or RS-422/485 serial peripherals. 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. The Industrial USB Multiport Serial adapters provide DB9 (RS-232) and Terminal Block (RS-422/485) connections on each individual com port.

The adapters are USB bus powered and require no additional power input. A VDC power input is provided via terminal block if optional VCC output on pin 9 is used in RS-232 applications to provide power to external serial devices. Quatech's Industrial USB to Serial adapters are also available with 3000V DC to DC Optical Isolation to provide the highest degree of system protection and isolation between device and computer. All units are in a ruggedized metal enclosure and provide visual LED indication of power, USB ready and data transmit/receive per individual port.

Features

USB 2.0 based Industrial Serial Adapters
4 independent serial ports
USB to RS-232/422/485 (MEI)
Each port independently configurable for RS-232, RS-422 or RS-485
LED indication of of Power, USB Ready, and Data transmit/receive per port
Device enumerates itself as standard port(s) in system
Full modem control and hardware and software flow control (RS-232)
Full-duplex or half-duplex modes (RS-232/422/485)
Auto detect between RS-485 and RS-422
Bus powered, external power terminal block available to provide power out DB9 connector
Driver Support: Virtual Com Utility, Windows 2000, Server 2003, XP, XP 64 bit, Vista, Windows 7, Linux 2.4 / 2.6
3000V DC to DC isolation protection available (QSU2-540IS)
Embedded High Speed USB Serial Adapters available upon request
Single Port USB products available upon request
1 year warranty

QSU2-540 / QSU2-540IS
	Features:	Industrial USB 2.0 Serial Adapters 4 independent serial ports Device enumerates itself as standard comm ports LED indication of Unit Power, USB Ready, and Data transmit/receive per port Full modem control and hardware and software flow control Flow Control: X-On / X-Off or Hardware Pull high / Low: 1K/1K Ohm RS-232 PIN #9 as DC5V output (optional configuration) QSU2-540 (Non Isolation) Pin#9 can be VCC (optional) as every RS-232 port for up to 300mA, or ONLY one port for up to 1.2A but requires external power supply to work properly). QSU2-540IS (w/ Optical Isolation) RS-232 Pin#9 not able to be VCC output. Dimension: 110* 180 * 25 mm ( W * D * H ) Weight: 550g Operating Temp : 0~70°C Storge Temp : -40 to 85°C Humidity : 5~95% RH Approval : CE / FCC, RoHS 1 year warranty
	Interface:	Serial Ports: 4 x RS-232/422/485 (Auto Detect - MEI) 4 ports of RS-232 and 4 ports of RS-422/485 with individual connections Any 4 mixed ports can be selected to operate and Auto Detectable) RS-232: TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND, RI RS-422: RxD+ , RxD- ,TxD+ , TxD- RS-485 : Data+ , Data- RS-422/485 Over Current and Surge Protection
	OS Compatibility:	Virtual Com Utility Windows 2000, Server 2003, XP, XP 64 bit, Vista, Windows 7 Linux 2.4 / 2.6
	USB Ports Required:	Connector : 1 USB type B USB 2.0 High Speed Baud Rate: Full speed 12 Mbps
	Data Rate:	RS-232: 962.1 Kbps RS-422/485: 115.2 Kbps
	Connectors:	RS-232: DB-9 male RS-422/485: Terminal Block Optional Power: USB Bus powered (DC9V~24V DC Jack and Terminal Block also available)
	Transceiver:	Transmit/Receive (Signal 3000V DC optical isolation protect) 3000V DC to DC isolation protect (QSU2-540IS)
	UARTs:	Receive buffer : 2K Byte Transmit buffer: 2K Byte

Sales Information:

Application: Industrial Data Collection
Quatech Products Used: Quatech QSU2-540IS Industrial 4 port USB to RS-232 Serial Adapter with Optical Isolation

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. This application was originally implemented with standard USB to serial adapters, however results were unpredictable and inaccurate. After much testing, our customer found that the added protection of Quatech's isolation and surge suppression package was the only USB to Serial solution that would work reliably and protect their 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.

Using USB to Serial adapters is a far more economical solution. Quatech USB to serial adapters enumerate themselves as standard COM ports compatible with all standard RS-232 devices and the software created for them. This means that users can take advantage of USB technology without replacing a single peripheral RS-232 or RS-422/485 serial device or doing any additional programming. More USB to Serial Adapter Applications