Impulse 2807 - Manual (Page 3)

© Sealevel Systems, Inc. - 1 - SeaLINK+8.VC User Manual
Introduction
The Sealevel Systems SeaLINK+8.VC (Item# 2807) is a USB device that equips the
PC with eight RS-232 or RS-485 Asynchronous serial ports. The SeaLINK+8.VC
supports RS-232 data rates up to 115.2K bps and RS-485 data rates up to 921.6K
bps. The box does not need to be opened nor are there any dipswitches to set. The
2807 is housed in an attractive plastic enclosure with a high-retention USB type "B"
connector that prevents accidental disconnection of the included USB cable.
The 2807 is USB bus powered, so no external power supply is required. For
conveniently powering serial peripherals, ordering options allow an external power
source up to be connected to a DC jack on the rear of the unit. The supplied power is
fused and connected to pin 5 on each of the eight RJ45 connectors.
With the unique VersaCom multi-interface connector design included on the
SeaLINK+8.VC, both RS-232 and two-wire RS-485 signals are always present and
active on the RJ45 serial connectors. Simply select the appropriate pin out for RS-
232 or two-wire RS-485 on a port-by-port basis.
The SeaLINK+8.VC is designed to be used with a variety of Operating Systems
including Windows 98/ME/2000/XP. The SeaCOM API (Application Programmer
Interface) included on CD with the SeaLINK+8.VC provides a variety of useful
high-level function calls implemented as a Windows dynamic link library (DLL). In
addition to the API, SeaCOM includes sample code and utilities to simplify software
development.