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DSP 200/300 Lisalogo.gif (1748 bytes)
Dual Channel RS-422/485 Serial Adapter Card
US Prices
CDN Prices

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PCMCIA card standard specification 2.1 compliant
  Client software driver for DOS & OS/2
  Selectable & shareable interrupt (IRQ 3-7, 9-12, 14, 15)
  Selectable I/O base address
  Windows 95,98,ME,NT,2000,XP compatible


Quatech's DSP-200/300 is a PC-Card 2.1 compliant Type-II PCMCIA adapter which add two fully independent asynchronous RS-422 serial interfaces (RS-485 for DSP-300) to the host computer. Like all Quatech serial interfaces, the DSP-200/300 is implemented with 16550 UARTs which provide 16 byte transmit and receive FIFOs, making the card ideal for use in multitasking environments and for use with applications involving high data rates.

The card's two serial ports may be configured at either the standard COM port I/O address locations or in a 16-byte continuous I/O address block. The DSP-200/300 may be configured at any one interrupt level. An interrupt status register is provided for determining which serial port generated the interrupt. The user may select Full Duplex/Half Duplex options with RTS and DTR as driver enable options. A RTS-CTS Modem Control handshake may also be selected.

All necessary software is included to install and configure the cards for use with DOS/Windows 3.x, Windows 95, and OS/2 (an optional communications driver may also be required for OS/2). However, under Windows environments, only point to point communications are supported, not multi-drop networks and half-duplex options.

Suggested Applications

• Long Distance Serial Links: Up to 4000 feet (RS-422/RS-485)
• Low Cost Multi-drop Networks (up to 32 on RS-485)
• Factory Automation
• Process Control
• Multi-drop data collection
• Portable computer applications


Bus Interface: PCMCIA Card Standard 2.1
Physical Dimensions: Type II (5 mm) PCMCIA card
Maximum Baud Rate: 115.2K
Power Requirements: 5 volts, 25.75 mA (typical), 33.26 mA (maximum)

COM 1 & 3
COM 2 & 4
COM 5 & 6
COM 6 & 7, etc.
Above COM 4 the DSP-200/300 will install in the lowest available continuous address block.

Connector: Two Standard DSUB-9 female connectors via a pigtail cable off the PCMCIA Card

PIN 1: Auxiliary Output
PIN 2: Data Output
PIN 3: Signal Ground
PIN 4: Data Input
PIN 5: Auxiliary Input
PIN 6: Auxiliary Output-
PIN 7: Data Output-
PIN 8: Data Input-
PIN 9: Auxiliary Input-

OS2 Warp Certified Your ALT-Text here FCC Class B Certified

Ordering Information

When placing your order, please refer to the following product numbers:

DSP-200/300 - Dual Channel RS-422/485 asynchronous serial PCMCIA Card
CP-DSP-200 - Spare cable for DSP-200/300
Drivers available for Windows 95,98,ME,NT,2000
Windows 3.1 Serial Device Driver
OS/2 Serial Port Device Driver
Quatech Communication Utilities Package (DOS & WIN 95)
MID: DOS Serial Communications Package

USA Office

Address: 1480 Gulf Road, Suite 837,
PO Box 1280
Point Roberts, WA 98281

Western Canada - Vancouver BC

Tel:1.800.663.6001 or 1.604.925.6150
Address: 2454 Haywood Ave
West Vancouver, BC V7V 1Y1

Eastern Canada - Markham, Ontario

Tel:1.800.465.0164 or 1.905.513.7027