Manual
  Introduction 
Sealevel Systems ACB-104 Page 1 
Introduction 
Overview 
The Sealevel Systems ACB-104  provides the PC with one high-speed RS-232/530/422/485 
synchronous/asynchronous port. The ACB-104  can be used in a variety of sophisticated communications 
applications such as SDLC, HDLC, X.25, Bi-Sync, Mono-Sync, and high-speed asynchronous. 
What’s Included 
The  ACB-104  is shipped with the following items. If any of these items are missing or damaged, contact the 
supplier. 
•  (1) ACB-104 Adapter 
•  (1) DB-25 Cable Assembly 
•  (1) Nylon Hardware Kit 
•  Sealevel Software 
Factory Default Settings 
The ACB-104 factory default settings are as follows: 
Base Address  DMA Selection  IRQ Electrical Specification 
238  TX: 1 / RX: 3  5  RS-530/422 
To install the ACB-104 using factory default settings, refer to the section on Installation. 
For your reference, record installed ACB-104 settings below: 
Base Address  DMA Selection  IRQ Electrical Specification 










