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Quatech

Quatech RS422/RS485 PCI

Two & Four Port RS-422/RS-485 PCI Cards

Add RS-422 & RS-485 Serial Ports To Your Desktop Or Industrial PC
 
Quatech PCI Serial Adapters
  
  • 2 or 4 independent ports
  • Each port RS-422 or RS-485
  • Speeds up to 921.6 kbps
  • 16750 UARTs with 64-byte FIFOs
  • Full duplex and half duplex modes
  • Surge suppression option
  • Win 2000/XP/VISTA support
  • 5 year warranty



Datasheet/Manual:

Quatech RS-232/RS-422/RS-485 PCI datasheet in PDF format Datasheet in PDF format
Quatech DSC-200/300 manual in PDF format DSC-200/300 Manual in PDF format
Quatech QSC-200/300 manual in PDF format QSC-200/300 Manual in PDF format
 

Introduction

Quatech's RS-422/485 serial boards are available with either two or four ports. The ports are jumper configurable for either RS-422 or RS-485 in any combination for full and half duplex networks. PCI registers are properly implemented to assure that Plug-and-Play works reliably, and that the board will not cause PCI bus conflicts. The boards are implemented with 16750 UARTs containing 64-byte FIFOs. They use a clock multiplying feature allowing them to achieve data rates as high as 921.6 kbps.

To maintain maximum signal integrity, Quatech uses a four-layer board design. But, for even more protection in industrial environments, an optional surge suppression package is available. This "IND" option applies a surge suppressor to each line that is capable of sustaining up to 40A peak, 8 x 20µs transient surges, a clamping voltage of 15.5V and a peak energy dissipation of 0.1 Joules. (Note that implementing the IND option restricts the board's speed to 115.2 kbps).
 
DSC-200 DSC-200
Serial PCI board, 2 port RS-422/RS-485 (DB-9)
 
QSC-200/300 QSC-200/300
Serial PCI board, 4 port RS-422/485
 
RS-422/485 pinout
 
 

Specification
Bus Interface:

32-bit, 33 MHz PCI Bus specification 2.2 compliant
OS Support:

Windows 95/98/Me/NT/2000/XP/VISTA, OS/2, DOS
Data Rate:

921.6 kbps (max)
Serial Ports Provided:

DSC:2
QSC:4
Each configurable as RS-422 or RS-485 for full or half duplex
Serial Port Connectors:

DSC: 2 DB-9 female
QSC: HD-44 female (supplied with cable which brings serial out to 4 DB-9 female)
COM port allocation:

Windows 95/98/Me: For these versions of Windows, Windows will allocate the board a COM port starting at the next free COM port at COM5 or higher - note that this is a 'feature' of Windows 95/98/Me and not a limitation of the Quatech cards. However, it is easy to change the COM port allocation (i.e. to use COM1 -4 or other ones), refer to this document for further details.

Windows 2000/XP: The cards will always takes the next available com port number. Note that if some other installed hardware has been installed and has not removed/uninstalled it but just been unplugged, Windows will reserve that COM port for that device and the Quatech device will take the next free COM port number(s).

UARTs:

16750 UARTs with 64-byte FIFOs (1 per port)
Transceiver:

MAX491 or compatible
Drivers:

Differential Voltage: +2V (min)
Transition Time (TLH): 15ns (typ), 40ns (max)
Transition Time (THL): 15ns (typ)
Receive Buffers:

Differential Input Threshold: ±0.2V
Voltage Range: -7V to +12V Common Mode Input
Transition Time (THL-TLH): 15ns (typ)
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 15.5V and a peak energy dissipation of 0.1 Joules.(NOTE: The "IND" option limits data rate to 115.2 kbps due to capacitive loading.)
Environment:

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

320 mA (+5V)
Size:

DSC: 5.0” x 3.7”
QSC: 5.4” x 3.8”
Certifications:

CE, FCC Class B

ROHS Status:

This product is lead free/ROHS compliant.

Ordering Details:
Board:

DSC-200/300 2 port RS-422/485 PCI board
QSC-200/300 4 port RS-422/485 PCI board

Quatech cards come in a retail box with manual/driver CD and cable (where necessary)
Accessories:

IND2 Surge suppression package for 2 ports
IND4 Surge suppression package for 4 ports
CP-QS-D9 Cable providing 4 DB-9 (m) ports for QSC
CP-QS Cable providing 4 DB-25 (m) ports for QSC

Order Online!

 

ORDER ONLINE - these products are available to order on our online webshop.
Further Information:

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