Impulse 2801 User Manual download pdf (Page 4)

Introduction

Sealevel Systems SeaLINK+8 Page 1

Introduction

Overview

The Sealevel Systems SeaLINK+8 family of products equips the PC with 8

USB to Asynchronous serial ports. Three different model numbers are available

that offer a variety of port options. Model 2801 equips the PC with 8 additional

RS-232 ports that support a full RS-232 interface and data rates up to 460.8K

baud. Model 2802 equips the PC with 8 RS-422/485 ports that support data

rates up to 921.6K baud and provide selectable line termination and biasing. 2-

wire RS-485 line turnaround is supported via an onboard hardware circuit.

Model 2803 equips the PC with 8 user configurable RS-232/422/485 ports.

Each port is individually configurable and the interface is selected by

configuring two dipswitch positions. The advantage of this product over more

traditional approaches is that it does not require opening the computer case, nor

does it require resources such as I/O ports or IRQs. It does require a system that

supports USB both in terms of hardware and operating system.

What’s Included

The SeaLINK+8 is shipped with the following items. If any of these items is

missing or damaged, contact the supplier.

• SeaLINK+8 USB to Asynchronous Serial Converter

• USB Cable Part Number CA179 for Connecting to Upstream

Host/Hub

• Sealevel Software

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Impulse 2801 User Manual Page 4