Impulse 3440 - Manual (Page 4)

Introduction
Sealevel Systems ULTRA COMM+422 Page 1
Introduction
Overview
The Sealevel Systems ULTRA COMM+422 provides the PC with four
additional RS-422/485 serial ports for terminals, modems, printers, etc.
The unique feature of the ULTRA COMM+422 is the ability to be RS-485
compatible without the need for special software or drivers. This ability is
especially useful in Windows, Windows NT, and OS/2 environments where the
lower level I/O control is abstracted from the application program. This ability
means that the user can effectively use the ULTRA COMM+422 in an RS-485
application with existing (i.e. standard RS-232) software drivers.
Note: The ‘Auto Enable’ feature is not available on the p/n 3441.
What’s Included
The ULTRA COMM+422 is shipped with the following items. If any of these
items are missing or damaged, contact the supplier.
• ULTRA COMM+422 Serial I/O Adapter
• DB-37 to four DB-9 ‘Spider Cable’
• Sealevel Software
Factory Default Settings
The ULTRA COMM+422 factory default settings are as follows:
Port # Base Address IRQ Electrical Specification
Port 1 280 10 RS-422
Port 2 288 5 RS-422
Port 3 290 10 RS-422
Port 4 298 5 RS-422
To install the ULTRA COMM+422 using factory default settings, refer to
Installation on page 13.
For your reference, record installed ULTRA COMM+422 settings below:
Port # Base Address IRQ Electrical Specification
Port 1
Port 2
Port 3
Port 4