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Quatech

Quatech USB2 Serial Adapters

RS-232/422/485 Serial - USB2 Adapters - Upto 16 Ports.

Connect RS-232/422/485 Serial Devices To Your Desktop Via USB2!

 
Quatech USB2 To Serial Adapters
  
  • 1, 2, 4 or 8 independent ports
  • RS-232 or RS-232/422/485 versions
  • USB2 compatible
  • Appears as standard COM ports
  • Speeds up to 460.8 kbps
  • Surge suppression available
  • Bus powered, no external PSU
  • Win 2000/XP/VISTA/Linux support
  • 5 year warranty



Datasheet/Manual:

Quatech USB Serial Adapter Datasheet in PDF format Datasheet in PDF format
Quatech USB Serial Adapter manual in PDF format Manual in PDF format
 

Introduction

If speed, expansion and support are what you're looking for in a USB Serial Adapter, think Quatech.

You can now broaden the range of external peripherals used on your computer at higher speed rates than the USB 1.1 series, with the introduction of the High Speed USB 2.0 Serial Adapters. The USB 2.0 has more bandwidth that allows higher data rates on the serial ports for more efficiency.

The new High Speed USB 2.0 Serial Adapter line gives your laptop or workstation the ability to communicate between a USB (Universal Serial Bus) port and up to eight RS-232, RS-422, or RS-485 serial peripherals. It 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 USB 2.0 Serial Adapters are the ideal solution for a variety of industries and applications including banking, retail and industrial automation where PCs have a significantly shorter lifecycle than the peripherals that use them.

For over 20 years, Quatech has been known to help you Connect with Reliability. As we continue in the race to become the industry leader, our high performance device connectivity line expands with the new high speed USB 2.0 Serial Adapters. It enables the USB Serial Adapter to hit speeds of up to 921.6 kbps, 1024-byte 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 the industrial surge suppression “IND" option, you can safeguard the USB Serial Adapter. The “IND" option is ideal for implementing USB-to-serial networks in factories, power plants and other potentially harsh industrial environments. USB 2.0 is fully compatible with USB 1.1 devices. The older devices work with the new bus, and vice versa.

The 400 Series models introduce the software-selectable Multi-Electrical Interface. The MEI capability is available on all ports at the click of a mouse. LEDs visually tell you which ports are using which protocol, so go ahead, mix and match.

USB Serial Adapters vs. USB Serial Cables

All USB to serial converters are not the same. There are a number of inexpensive cables on the market that perform USB to RS-232 serial conversion. While these may seem like an economical choice, they are often poor choices for all but the simplest of applications. Many customers who purchase Quatech USB to serial adapters do so after unsuccessful attempts to use these RS-232 converter cables. The reason these cables fail are varied but the most common is that they lack the advanced functionality built into the Quatech adapters.

For example. most adapter cables have very small data buffers and no IRQ support. Quatech USB to serial adapters use 16550 UARTs with 16-byte FIFOs for each port. This means that applications at very high data rates are easily handled in heavy multitasking environments. In addition, Quatech provides sophisticated drivers for its adapters that enable extensive system configuration options from setting data rates and controlling clocking to setting parity bits and flow control. With these options available, even the most sophisticated application software can address RS-232 serial ports enabled by Quatech adapters exactly as they would a standard COM port.
 

SSU2-100

SSU2-100
High Speed USB Serial Adapter (USB2.0)
1 port RS-232

DSU2-100

DSU2-100
High Speed USB Serial Adapter (USB2.0)
2 port RS-232
 

DSU2-400

DSU2-400
High Speed USB Serial Adapter (USB2.0)
2 port RS-232/422/485

QSU2-100

QSU2-100
High Speed USB Serial Adapter (USB2.0)
4 port RS-232
 

QSU2-400

QSU2-400
High Speed USB Serial Adapter (USB2.0)
4 port RS-232/422/485

ESU2-100

ESU2-100
High Speed USB Serial Adapter (USB2.0)
8 port RS-232
 

ESU2-400

ESU2-400
High Speed USB Serial Adapter (USB2.0)
8 port RS-232/422/485

SSU2-100-EMB

SSU2-100-EMB
Embedded USB Serial Adapter, USB 2.0
1 port RS-232, surge suppression

 

QSU2-100-EMB

QSU2-100-EMB
Embedded USB Serial Adapter, USB 2.0
4 port RS-232, surge suppression

QSU2-400-EMB

QSU2-400-EMB
Embedded USB Serial Adapter, USB 2.0
4 port RS-232/422/485 (MEI), surge suppression

 

ESU2-100-EMB

ESU2-100-EMB
Embedded USB Serial Adapter, USB 2.0
8 port RS-232, surge suppression

ESU2-400-EMB

ESU2-400-EMB
Embedded USB Serial Adapter, USB 2.0
8 port RS-232/422/485 (MEI), surge suppression

 
 

Specification
Bus Interface:

High Speed USB 2.0
USB 1.1 compatible (works at slower speeds, see below)

OS Support:

Windows 98/Me/NT/2000/XP
Windows Vista
SunRay Server 1.3 (SSU-100 only)
Linux (Fedora FC2, FC3, FC4, Suse 8.3, 9.1, RedHat 7.3, 9.0)
Data Rate:

USB2.0 mode:

  • Each port upto 460.8 kbps

USB1.1 mode:

  • SSU2 230.4k bps
  • DSU2 230.4k bps
  • QSU2 230.4k bps (1 or 2 ports working simultaneously)
  • QSU2 115.2k bps (3 or 4 ports working simultaneously)
  • ESU2 230.4k bps (1 or 2 ports working simultaneously)
  • ESU2 115.2k bps (3 or 4 ports working simultaneously)
  • ESU2 57-115k bps (5+ ports working simultaneously)
Serial Ports Provided:

RS-232 models:

  • SSU2:1
  • DSU2:2
  • QSU2:4
  • ESU2:8

RS-232/422/485 models:

  • DSU2-400 : 2 ports
  • QSU2-400 : 4 ports
  • ESU2-400 : 8 ports
  • Each port configurable as RS-422 or RS-485 for full or half duplex communication
USB Ports Required:

All models require one port only

UARTs:

16550 UARTs with 16-byte FIFOs (1 per port)
Transceiver:

RS-232 models: SP211HB
RS-232/422/485 models: MAX491 or compatible
RS-232 Output:

Voltage Swing: ±5V (min), ±7V (typ)
RS-232 Input:

Voltage Range: -15V (min), +15V (max)
Input Threshold Low: 0.8V (min), 1.2V (typ)
Input Threshold High: 2.4V (max), 1.7V (typ)

RS-422/485

Differential Driver Output (50W Load): +3.3V (max)
Differential Driver Output (27W Load): +1.5V (min), +3.3V (max)
High Input: +2V (min)
Low Input: +0.8V (max)
Driver Rise/Fall Time: 5ns (typ), 20ns (max)
Driver Input to Output Delay: 20 ns (min), 40 ns (typ), 60 ns (max)
Receiver Input to Output Delay: 40 ns (min), 70 ns (typ), 100 ns (max)
IND Option:

Surge suppressor applied to each line that is capable of sustaining up to 40A peak, 8 x 20µs transient surges, a clamping voltage of 30V and a peak energy dissipation of 0.1 Joules. (NOTE: The "IND" option limits data rate to 115.2 kbps)
Environment:

Operating: 0°C to 70°C
Storage: -50°C to 80°C
Humidity: 10% to 90%

Power Requirements:

Bus-powered device, no external power supply required
Suspend power: < 500 µA
Unconfigured power: < 100 mA
Configured Power: < 500 mA
Size:

SSU: 3.6" L x 1.7" W x 1"
DSU/QSU: 9.18" L x 5.25" W x 1.675" H
ESU: 9.18" L x 5.25" W x 2.363" H

Connectors:

Standard DB-9 male on all products
Certifications:

CE, FCC Class B
ROHS Status:

This product is lead free/ROHS compliant.


Ordering Details:
Board:

SSU2-100 1 port USB to RS-232 serial adapter (USB2.0)
DSU2-100 2 port USB to RS-232 serial adapter (USB2.0)
QSU2-100 4 port USB to RS-232 serial adapter (USB2.0)
ESU2-100 8 port USB to RS-232 serial adapter (USB2.0)

DSU2-400 2 port USB to RS-232/422/485 serial adapter (USB2.0)
QSU2-400 4 port USB to RS-232/422/485 serial adapter (USB2.0)
ESU2-400 8 port USB to RS-232/422/485 serial adapter (USB2.0)

SSU2-100-EMB 2 port USB2 to RS-232 serial adapter, embedded, surge suppression
QSU2-100-EMB 4 port USB2 to RS-232 serial adapter, embedded, surge suppression
QSU2-400-EMB 4 port USB2 to RS-232/422/485 serial adapter, embedded, surge suppression
ESU2-100-EMB 8 port USB2 to RS-232 serial adapter, embedded, surge suppression
ESU2-400-EMB 8 port USB2 to RS-232/422/485 serial adapter, embedded, surge suppression

All units come with a USB cable

ORDER ONLINE - these products are available on our online webshop.

Quatech cards come in a retail box with manual/driver CD and cable (where necessary)
Accessories: CP-USB Spare USB Cable
IND2 Surge suppression package for 2 ports
IND4 Surge suppression package for 4 ports
IND8 Surge suppression package for 8 ports
IND16 Surge suppression package for 16 ports
Further Information:

Want further information or pricing on this product? Either fill out our feedback form or contact us for further information.
 
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