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COMH 3189-E

ISA 2-Port RS-422/485 Serial Interface Card, 115.2 kbps Data Rate, 128-Byte FIFO Buffer, with 2 DB-9M Connectors and 500VDC Isolation

Qty   Price (with options selected)
Shipping: 2+ weeks
 Features
System BusISA (16-bit, AT)
Data Rate per Port, Max.115.2 kbps
Number of RS-422/485 Serial Ports2
 
Introduction

Our COMH 3089 ISA RS-422/485 serial communications board utilizes the 16550 UART--the same UART found in the IBM® asynchronous serial adapter. This means that writing to one of our adapters is virtually the same as writing to the IBM serial port. The output of each port may be set to half-duplex transmissions for RS-485 operation, or to full-duplex transmission for RS-422 operation. RS-485 two- or four-wire operation is supported. Address locations are switch selectable and interrupt request lines are set via on-board jumper blocks. Our COMH 3089-E upgrades to the 16850 UART, with a 128-byte buffer.

The COMH 3189 models provide up to 500VDC of ground isolation. Full support for Windows 95/98/2000/ME/NT is provided, though simplier applications may require no additional drivers at all.

Our free Developer's Toolkit™, featuring drivers, samples, applications, and programming information collected over the years, is included. Our goal is to provide the developer with a single high-level programming interface that will function with a wide variety of CyberResearch products across today's mainstream operating systems, including DOS and Windows® 95/98/2000/ME/NT.

  Detailed Specifications  More Detail
Product Information
System Bus ISA (16-bit, AT)
Data Rate per Port, Max. 115.2 kbps
FIFO Buffer Length 128 Bytes
I/O Ports
Serial Ports UART/Controller Type 16850
Number of RS-422/485 Serial Ports 2
Detailed Specifications More Detail
 
Ordering - Includes Options Indicated Below
COMH 3089
ISA 2-Port RS-422/485 Serial Interface Card, 115.2 kbps Data Rate, 16-Byte FIFO Buffer, with 2 DB-9M Connectors
$219.00
COMH 3089-E
ISA 2-Port RS-422/485 Serial Interface Card, 115.2 kbps Data Rate, 128-Byte FIFO Buffer, with 2 DB-9M Connectors
$259.00
COMH 3189
ISA 2-Port RS-422/485 Serial Interface Card, 115.2 kbps Data Rate, 16-Byte FIFO Buffer, with 2 DB-9M Connectors and 500VDC Isolation
$289.00
COMH 3189-E
ISA 2-Port RS-422/485 Serial Interface Card, 115.2 kbps Data Rate, 128-Byte FIFO Buffer, with 2 DB-9M Connectors and 500VDC Isolation
$329.00
Catalog # Shipping Price (with options) Qty  
COMH 3189-E 2+ weeks
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