Impulse 7203 - Manual (Page 4)

Introduction
Sealevel Systems ULTRA COMM+2I.PCI Page 1
Introduction
Overview
The Sealevel Systems ULTRA COMM+2I.PCI is a two channel isolated PCI
Bus serial I/O adapter for the PC and compatibles. Utilizing the Exar 16C850
UART with its industry leading 128 byte FIFOs, it provides two field selectable
RS-232/422/485 serial ports supporting data rates up to 460.8K bps
(RS-422/485).
Configure both ports as RS-232 for standard serial COM: port requirements.
Choose the RS-422 mode for long distance device connections up to 5000ft.
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. Optional Terminal Block adapters are
available to simplify field-wiring connections.
In both RS-232 and RS-422 modes, 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 COMM+2I.PCI is shipped with the following items. If any of
these items is missing or damaged, contact the supplier.
• ULTRA COMM+2I.PCI Serial I/O Adapter
• Sealevel Software
Factory Default Settings
The ULTRA COMM+2I.PCI factory default settings are as follows:
Port # Electrical Specification
Port 1 RS-422
Port 2 RS-422
To install the ULTRA COMM+2I.PCI using factory default settings, refer to
Installation on page 7.