List of Figures
Figure Title Page
3-1. Fluke 123 Block Diagram...................................................................................... 3-2
3-2. Fluke 123 Start-up Sequence, Operating Modes................................................... 3-8
3-3. Power Supply Block Diagram ............................................................................... 3-9
3-4. CHAGATE Control Voltage ................................................................................. 3-12
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............................................................................. 3-15
3-8. C-ASIC Block Diagram......................................................................................... 3-15
3-9. Capacitance Measurement..................................................................................... 3-19
3-10. T-ASIC Trigger Section Block Diagram............................................................... 3-21
3-11. Random Repetitive Sampling Mode ..................................................................... 3-22
3-12. Reference Voltage Section .................................................................................... 3-24
3-13. LCD Control.......................................................................................................... 3-28
4-1. Display Pixel Test Pattern ..................................................................................... 4-4
4-2. Menu item selection .............................................................................................. 4-6
4-3. Test Tool Input A to 5500A Scope Output 50Ω ................................................... 4-7
4-4. Test Tool Input B to 5500A Scope Output 50Ω ................................................... 4-9
4-5. Test Tool Input A-B to 5500A Normal Output ..................................................... 4-11
4-6. Test Tool Input A-B to 5500A Normal Output for >300V ................................... 4-19
4-7. Test Tool Input A to 5500A Normal Output 4-Wire............................................. 4-20
4-8. Test Tool Input A to TV Signal Generator ........................................................... 4-23
4-9. Test Tool Screen for PAL/SECAM line 622 ........................................................ 4-24
4-10. Test Tool Screen for NTSC line 525..................................................................... 4-24
4-11. Test Tool Screen for PAL/SECAM line 310 ........................................................ 4-25
4-12. Test Tool Screen for NTSC line 262..................................................................... 4-25
4-13. Test Tool Input A to TV Signal Generator Inverted ............................................. 4-25
4-14. Test Tool Screen for PAL/SECAM line 310 Negative Video .............................. 4-26
4-15. Test Tool Screen for NTSC line 262 Negative Video .......................................... 4-26
5-1. Version & Calibration Screen ............................................................................... 5-3
5-2. Display Test Pattern .............................................................................................. 5-6
5-3. HF Gain Calibration Input Connections................................................................ 5-7
5-4. 5500A Scope Output to Input A............................................................................ 5-9
5-5. 5500A Scope Output to Input B ............................................................................ 5-11
5-6. Volt Gain Calibration Input Connections <300V ................................................. 5-12
5-7. Volt Gain Calibration Input Connections 500V.................................................... 5-13
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