GT7400 Programmable DC Power Supply User’s Guide GEOTEST MARVIN TEST SYSTEMS, INC. 2851 SOUTH PULLMAN STREET IRVINE, CALIFORNIA 92705-5713 Revision 2 Part No. GT97608 Preface i Safety and Handling Each product shipped by Geotest is carefully inspected and tested prior to shipping. The shipping carton provides protection for shipment and can be used to store both hardware and software. The power supply is extremely delicate and requires care in handling and installation. Do not remo ve the power supply from its protective shipping carton or plastic covering until you are ready to install it. If the power supply is removed from the computer for any reason, be sure to store it in its original shipping carton. Do not store the power supply on a workbench or anywhere it can be dropped or subjected to strong electromagnetic or electrostatic fields. It is good practice to store the power supply in a protective, anti-electrostatic wrapper away from electromagnetic fields. Make a single backup copy of the software diskette and store the original in a place safe from heat or electromagnetic or electrostatic fields. Warranty Geotest’s products are warranted against defects in materials and workmanship for a period of 12 months (6 months for software products). Geotest shall repair or replace (at Geotest’s discretion) any defective product during the stated warranty period. The software warranty includes any upgrades released during the warranty period. If you need to return the power supply, please call 949-263-2222 for an RMA number. If You Need Help If you need help at any time with the installation or use of this product, call Geotest technical support at 949-263-2222. In addition, you may get updated product information and drivers from our Internet Web Site at www.geotestinc.com. ii GT7400 User’s Guide Disclaimer Geotest products are not intended for medical use, including certification, calibration or testing of medical instruments or devices. In no event shall Geotest or any of its representatives be liable for any consequential damages whatsoever (including, without limitation, damages for loss of business profits, business interruption, loss of business information, or other loss) arising out of the use of or inability to use this product, even if Geotest has been advised of the possibility for such damages. Copyright Copyright Ó 1996-1999 by Geotest, Marvin Test Systems, Inc. All rights reserved. No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written consent of Geotest. Trademarks 386, 486, Pentium Intel Corporation ATEasy, GTXI Geotest – MTS, Inc. Borland C++ and Delphi Borland Corporation IBM or IBM-PC/AT International Business Machines Corp. (IBM). Microsoft Developer Studio Microsoft Corporation Microsoft Visual Basic Microsoft Corporation Microsoft Visual C++ Microsoft Corporation MS-DOS Microsoft Corporation Windows 3.1, Windows 95, Microsoft Corporation Windows 98 and Windows NT LabView National Instruments Table of Contents iii Table of Contents Safety and Handling................................................................................... i Warranty....................................................................................................... i If You Need Help ....................................................................................... i Disclaimer................................................................................................... ii Copyright .................................................................................................... ii Trademarks ................................................................................................. ii Chapter 1 - Introduction.......................................................1 About this Manual..................................................................................... 1 Scope and Organization............................................................................ 1 Conventions Used in This Manual......................................................... 2 Technical Support...................................................................................... 3 General Information.................................................................. 3 Internet Home Page Download Area ..................................... 3 Calibration .................................................................................. 3 Geotest Address and Telephone Numbers ............................ 3 Chapter 2 – Overview ...........................................................5 Introduction................................................................................................ 5 Features ....................................................................................................... 6 Architecture ................................................................................................ 7 Block Diagram........................................................................... 7 GTXI Interface and Power Supply Control .......................... 7 Power Conditioning Unit ......................................................... 8 Software ...................................................................................................... 8 Virtual Panel............................................................................... 8 iv GT7400 User’s Guide Function Library ........................................................................9 Programming Example ...........................................................10 Chapter 3 – Setup and Installation .................................11 Introduction...............................................................................................11 Packing List..............................................................................11 System Requirements..............................................................11 Unpacking and Inspection......................................................11 Discharge Static Electricity....................................................12 Setting the I/O Address...........................................................................13 Power Supply Installation ......................................................................15 Software Installation ...............................................................................15 Installation Under Windows ..................................................15 Windows NT Kernel Mode Driver Installation ..................16 Installing Under DOS..............................................................17 Overview of GTPS Files.........................................................................18 Driver Files ...............................................................................18 Example Programs ...................................................................20 Distributing the Software .......................................................................22 Chapter 4 – Using the Virtual Panel...............................23 Introduction...............................................................................................23 Opening the Panel....................................................................................23 Initializing .................................................................................................24 Displaying Channels ...............................................................................25 Setting a Channel’s Voltage...................................................................25 Setting a Channel’s Current Limit ........................................................25 Setting Channels to On or Standby.......................................................26 Table of Contents v Storing Values to EEPROM .................................................................. 26 Recalling Values from EEPROM ......................................................... 26 Resetting the Power Supply ................................................................... 26 Closing the Virtual Panel ....................................................................... 26 Chapter 5 – Programming the Power Supply ..............27 Introduction.............................................................................................. 27 Windows 95/98/NT, Windows 3.1 and DOS Drivers ....................... 28 Import Libraries ....................................................................... 28 Using the DLL Driver with Windows NT .......................... 29 How Does the HW Driver Work? ........................................ 29 Using the Windows 32-bit DLL............................................ 30 Using the Windows 16-bit DLL............................................ 31 Programming with the DOS Static Library ......................... 31 Supported Development Tools .............................................................. 31 Programming with C/C++ Tools .......................................... 32 Programming with Visual Basic ........................................... 32 Programming with Borland Pascal/Delphi.......................... 32 Programming with ATEasy 2.0 ............................................. 33 Programming with the Driver................................................................ 33 Initialization and the Power Supply Handle ....................... 34 Power Supply Handles...........................................................