Renamed the EIA232 Standard in the early 1990's) Written by Christopher E. Strangio Copyright 1993-1997 by CAMI Research Inc., Lexington, Massachusetts Send Us Your Comments . . . Contents What is EIA232 Likely Problems when Using an EIA232 Interface Pin Assignments Signal Definitions Signal Ground and Shield Primary Communications Channel Secondary Communications Channel Modem Status and ...

Describes interfacing the Serial (RS-232) Port in relation to both Hardware and Software. Gives Practical Examples using CDP6402 UART and Software Examples in C.

QUICK REFERENCE FOR RS485, RS422, RS232 AND RS423 INTRODUCTION Line drivers and receivers are commonly used to exchange data between two or more points (nodes) on a network. Reliable data communications can be difficult in the presence of induced noise, ground level differences, impedance mismatches, failure to effectively bias for idle line conditions, and other hazards associated with ...

Inkjet cartridges, laser toners, low cost RS-232 Serial Port RS-232 was created for one purpose, to interface between Data Terminal Equipment (DTE) and Data Communications Equipment (DCE) employing serial binary data interchange. So as stated the DTE is the terminal or computer and the DCE is the modem or other communications device. HISTORY RS-232 was originally adopted in 1960 by the ...

RS-232 Diagnosis Tech Bulletin Also Contains: EASY INSTRUCTIONS FOR RS-232 BREAKOUT BOX RS-232 Serial Communications is NOT that hard! For the stuff that the average phone man has to do, our Economy Model Break Out Box and a little basic information should allow you to get printers, SMDR and modems working. If you are working with modems, please note that most modern modems use the Hayes AT ...

Welcome to Keith s RS232 library page (This page was last updated on Thursday, October 15, 1998) Important!!!!! A small bug in the library was discovered by Elias Gil in my sendByte function. If you try to send more than one byte of data at the same time, data loss could happen. To fix the problem replace the sendByte function (in rs232.c) with the code below.