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Table of Contents
Chapter Title Page
1 Introduction and Specifications............................................ 1-1
1-1. Introduction ............................................................................. 1-3
1-2. Specifications........................................................................... 1-4
2 Operation Instructions........................................................... 2-1
2-1. Introduction ............................................................................. 2-3
2-2. Unpacking Your Instrument..................................................... 2-3
2-3. Battery Installation or Replacement......................................... 2-3
2-4. Fuse Replacement.................................................................... 2-5
2-5. Physical Features ..................................................................... 2-6
2-6. Front Panel........................................................................... 2-6
2-7. Display................................................................................. 2-8
2-8. Signal Input Limits .................................................................. 2-9
2-9. Operation ................................................................................. 2-10
2-10. Power-On Self-Test.............................................................. 2-10
2-11. AC/DC Voltage (V)............................................................. 2-11
2-12. True RMS Measurement.................................................. 2-11
2-13. AC-Coupled AC Measurements....................................... 2-12
2-14. Waveform Comparison and Conversion.......................... 2-13
2-15. High Impedance DC Voltage........................................... 2-14
2-16. AC/DC Current (A).............................................................. 2-15
2-17. Resistance (Ω)...................................................................... 2-18
2-18. Autoranging Megohms..................................................... 2-19
2-19. Autoranging Kilohms....................................................... 2-20
2-20. Diode Test (G)................................................................... 2-21
2-21. Relative (REL)..................................................................... 2-22
2-22. Continuity (
)........................................................... 2-25
2-23. Initial Check-Out Procedure.................................................... 2-25
3 Theory of Operation............................................................... 3-1
3-1. Introduction ............................................................................. 3-3
3-2. Functional Description............................................................. 3-3
3-3. Microcomputer..................................................................... 3-3
3-4. Measurement Acquisition Chip (MAC)............................... 3-5
3-5. A/D Converter Cycle............................................................ 3-5
3-6. Voltage Measurement .......................................................... 3-8