Fluke 27 free download

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® Multimeter 27 Service Manual For IEC 61010 CAT III Meters Only PN 690206 November 1998 © 1998 Fluke Corporation, All rights reserved. Printed in U.S.A. All product names are trademarks of their respective companies. Table of Contents Chapter 1 Title Page Introduction and Specifications ... 1-1 1-1. 1-2. 1-3. Using the Meter Safely ... 1-3 Operating Instructions ... 1-4 Specifications ... 1-5 2 Theory of Operation ... 2-1 2-1. 2-2. 2-3. 2-4. 2-5. 2-6. 2-7. 2-8. 2-9. 2-10. Introduction ... Functional Description ... Block Diagram Description ... Input Overload Protection ... Function Switching Circuits ... Signal Conditioning Circuits ... Custom Analog IC (U1) ... Peripherals to U1 ... Microcomputer Control ... Display ... 2-3 2-3 2-4 2-4 2-4 2-4 2-4 2-6 2-6 2-7 3 Maintenance ... 3-1 3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 3-8. 3-9. 3-10. 3-11. 3-12. 3-13. 3-14. 3-15. 3-16. Introduction ... Service Information ... Operator Maintenance ... Battery Replacement ... Fuse Test ... Fuse Replacement ... General Maintenance Information ... Handling Precautions for Static-Sensitive Devices ... Disassembly ... Reassembly ...