ISA 1-Port RS-422, RS-485 Serial Interface

Part: 3055 Model: Ultra-485

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Description

THIS PRODUCT IS OBSOLETE DUE TO LACK OF COMPONENT AVAILABILITY. PLEASE CONTACT YOUR SALES REPRESENTATIVE FOR FURTHER INFORMATION AND NEW PRODUCT ALTERNATIVES.

The 3055 ISA serial interface card provides a single RS-422 or RS-485 port for connection to serial devices. Individually selectable addresses and extended “AT” interrupts allow for seamless integration into OS/2 and Windows systems. The ULTRA 485’s “auto enable” design eliminates RS-485 communications roadblocks under Windows and OS/2. The ULTRA 485 appears to the host system as a standard COM: port requiring no special drivers or additional software.

Category: ISA

Additional information

Communications Chip	16550
Electrical Interface	RS-422, RS-485
Humidity Range	10 – 90% Relative Humidity, Non-Condensing
Host Interface(s)	ISA
Max Data Distance	4000 feet
Max Data Rate	115.2K bps
# of Ports	1
RS-485 Operation	Full Duplex (4 wire)Half Duplex (2 wire)
Serial Connector(s)	DB25M
UART Series	550 UART

Automatic control of RS-485 driver enable signal
Selectable COM: port addresses
Selectable and shareable IRQ level (2-5, 7, 10-12 and 15)
Automatically handles RS-485 enable and disable