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BLS 4224V

ISA 4-Port RS-422 Video Deck Controller Card, 460.8 kbps Data Rate, 16-Byte FIFO Buffer, with 4 DB-9F Connectors

Qty   Price (with options selected)
Shipping: 1-2 weeks
 Features
System BusISA (16-bit, AT)
Data Rate per Port, Max.460.8 kbps
Number of RS-422 Serial Ports4
 
Introduction

The BPS 4221S and 4222S are high-performance RS-422 video controller cards with 16C550-style UARTs which feature 16-byte transmit and receive buffers to help guard against loss of data in your busy system. The card may be addressed as COM1: to COM4: or any other I/O address you choose from 000 up to 3F8 hex. The backplate has up to four standard DB-9 female (9-pin) connectors.

All ports are capable of operating at speeds up to 460kbaud simultaneously, making these units ideal for high-speed applications such as ISDN modems.

Interrupt Sharing: The Key to Adding Many Serial Ports

The powerful interrupt feature allows multiple ports on a single card to use the same interrupt. With this technology, up to four ports in one system (when using the BLP 4224V) can share one interrupt. Any of eleven interrupt choices are available for each port. The interrupt status register may be located at any address, and when used with interrupt sharing, it will supply you with a pointer to indicate which port has an interrupt pending. This feature allows you to find out which of up to four ports has a pending interrupt with only a single read operation.

Our serial cards are compatible with all application software that communicates with a standard serial port using an 8250 or 16C450 UART (the UARTs which virtually all PC's use for serial ports). This includes compatibility with DOS, Windows 3.x/95/98/NT/ME/2000/XP, OS/2, UNIX, and XENIX. An NT setup disk is provided with the 4-port unit to make your Windows NT installation and registry modifications a breeze.

Our video deck controller cards feature female DB-9 pinout which supports a direct connection to popular video (VTR) decks. Each port may be switched via a jumper from being a controller to appearing as a VTR deck.

  Detailed Specifications  More Detail
Product Information
System Bus ISA (16-bit, AT)
Data Rate per Port, Max. 460.8 kbps
FIFO Buffer Length 16 Bytes
I/O Ports
Serial Ports UART/Controller Type 16C550-compatible
Number of RS-422 Serial Ports 4
Detailed Specifications More Detail
 
Ordering - Includes Options Indicated Below
BLS 4222V
ISA 2-Port RS-422 Video Deck Controller Card, 460.8 kbps Data Rate, 16-Byte FIFO Buffer, with 2 DB-9F Connectors
$119.00
BLS 4224V
ISA 4-Port RS-422 Video Deck Controller Card, 460.8 kbps Data Rate, 16-Byte FIFO Buffer, with 4 DB-9F Connectors
$199.00
Catalog # Shipping Price (with options) Qty  
BLS 4224V 1-2 weeks
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