Story of MEGADAC 200:Keeping 200-Channel Legacy Data Acquisition Hardware Running by Developing New Software Interface

摘要

This paper deals with a 16-bit 200-channel legacy data acquisition system from the 1 980S-MEGADAC 200. MEGADAC IS controlled by ASCII srtngs ongm ting from the host computer connected via a serial (RS-232) port. The original software package for MEGADAC was written in basic and runs only in the DOS operating system on an Intel 386 processor, because of memory addressing issues. To interface MEGADAC from a describes details of object Oriented Blue Box (OOBLUEBOX)] was created using the C++ programming anguage. This paper object onened implementation, architecture of the graphical user interface, and other implementation details including commu- OOBLUEBOX enles one to define and calibrate internally energized strain gage sensors and externally energized sensors with voltageout put set up experiment tables for multichannel data acquisition, and perform data acquisition. Several special features, such as channel calibration and run-time plotting were also introduced.