Fluke 43B Service Manual page 9

Figure
2-1. Max. Input Voltage vs. Frequency ........................................................................ 2-4
3-1. Fluke 43 Block Diagram........................................................................................ 3-2
3-2. Fluke 43 Start-up Sequence, Operating Modes..................................................... 3-8
3-3. Power Supply Block Diagram ............................................................................... 3-9
3-4. CHAGATE Control Voltage ................................................................................. 3-11
3-5. Fly-Back Converter Current and Control Voltage ................................................ 3-12
3-6. Fly-Back Converter Block Diagram...................................................................... 3-13
3-7. Back Light Converter Voltages ............................................................................. 3-14
3-8. C-ASIC Block Diagram......................................................................................... 3-15
3-9. Capacitance Measurement..................................................................................... 3-19
3-10. T-ASIC Trigger Section Block Diagram............................................................... 3-20
3-11. Random Repetitive Sampling Mode ..................................................................... 3-22
3-12. Reference Voltage Section .................................................................................... 3-23
3-13. LCD Control.......................................................................................................... 3-26
4-1. Display Pixel Test Pattern ..................................................................................... 4-4
4-2. Test Tool Input 1 to 5500A Scope Output 50Ω .................................................... 4-6
4-3. Test Tool Input 2 to 5500A NORMAL output...................................................... 4-9
4-4. Test Tool Input 1 to 5500A Normal Output.......................................................... 4-13
4-5. Test Tool Input 1-2 to 5500A Normal Output....................................................... 4-15
4-6. Test Tool Input 1-2 to 5500A Normal Output for >300V..................................... 4-23
4-7. Test Tool Input 1 to 5500A Normal Output 4-Wire ............................................. 4-25
4-8. Test Tool Input 2 to 5500A NORMAL output...................................................... 4-28
4-9. Test Tool Input 1 & 2 5500A Normal Output....................................................... 4-29
4-10. Bargraph Harmonics Volt ..................................................................................... 4-30
4-11. Bargraph Harmonics Ampere................................................................................ 4-30
4-12. Test Tool Input 1 to 5500A Normal Output.......................................................... 4-32
5-1. Version & Calibration Screen ............................................................................... 5-3
5-2. Display Test Pattern .............................................................................................. 5-7
5-3. HF Gain Calibration Input Connections................................................................ 5-8
5-4. 5500A Scope Output to Input 1............................................................................. 5-10
5-5. Volt Gain Calibration Input Connections <300V ................................................. 5-11
5-6. Volt Gain Calibration Input Connections 500V.................................................... 5-12
5-7. Four-wire Ohms calibration connections .............................................................. 5-13
5-8. Capacitance Gain Calibration Input Connections ................................................. 5-14
6-1. Fluke 43 Main Assembly....................................................................................... 6-4
List of Figures
Title
vii
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