Impulse 7204 - Manual (Page 4)

Introduction
Sealevel Systems ULTRA 485+2.PCI Page 1
Introduction
Overview
The Sealevel Systems ULTRA 485+2.PCI is a two channel PCI Bus serial I/O
adapter for the PC and compatibles and features the 16850 advanced UART. It
provides two field selectable RS-422/485 serial ports supporting data rates up to
460.8K bps. The 16850 advanced UART provides a 128 byte FIFO that helps
reduce processor overhead by reducing the number of interrupts that need
servicing. Each port can be individually configured.
Choose the RS-422 mode for long distance device connections up to 4000ft.
where noise immunity and high data integrity are essential. Select RS-485 and
capture data from multiple peripherals in a RS-485 multidrop network. Up to 31
RS-485 devices can be connected to each port to automate your data collection.
You can even mix the ports in any of the interface combinations to provide
maximum flexibility to your application.
In RS-422 mode, the card works seamlessly with the standard operating system
serial driver. In RS-485 mode, our special auto-enable feature allows the RS-485
ports to be viewed by the operating system as a COM: port. This allows the
standard COM: driver to be utilized for RS-485 communications. Our on-board
hardware automatically handles the RS-485 driver enable.
What’s Included
The ULTRA 485+2.PCI is shipped with the following items. If any of these
items are missing or damaged, contact the supplier.
• ULTRA 485+2.PCI Serial I/O Adapter
• Serial Utility Software
• User Manual
Factory Default Settings
The ULTRA 485+2.PCI factory default settings are as follows:
Port # Electrical Specification
Port 1 RS-422
Port 2 RS-422
To install the ULTRA 485+2.PCI using factory default settings, refer to
Installation on page 9.
For your reference, record installed ULTRA 485+2.PCI settings below:
Port # Electrical Specification
Port 1
Port 2