Fluke 5725A Amplificador
Fabricante:
Modelo:
5725A
Fecha:
Categoría:
Grupo:
Descripción:
Amplifier

Información

The Fluke 5725A Amplifier enhances the 5700A Calibrator in the ac voltage, ac current, and dc current functions. The 5725A operates under complete control of the 5700A through an Interface cable supplied with the 5725A, A diagram in the specifications tables at the end of this section illustrates the extended ac volt-hertz product achieved by using a 5725A, Increased ac voltage load limits allow using the 5700A Calibrator in systems with long cables. Voltage output from the 5725A is available at the 5700A Calibrator front or rear binding posts. This eliminates the need to move cables during a procedure that requires amplified as well as standard Calibrator outputs. The 5725A front or rear panel OUTPUT binding posts are only for current output. Extended-range ac and dc current is supplied through them. Since most meters with a high current range use a separate high current input terminal, this configuration normally eliminates the need to move cables during a procedure. If a single-point current output is needed, the 5700A Calibrator can be configured to source all current outputs through the 5725A binding posts. Enhancements to 5700A ac voltage output capability provided by the 5725A are as follows: · Frequency limits at higher voltage increase to 100 kHz at 750V, 30 kHz at 1100V. · Load limits are to 70 mA for frequencies above 5 kHz, and to 50 mA for frequencies less than 5 kHz. · Capacitive load limits are increased to 1000 pF. Model 5725A operating functions and ranges are as follows: · AC voltage: 220 to 1100V rms up to 70 mA (50 mA < 5 kHz), 40 Hz to 30 kHz; 220 to 750V rms up to 70 mA, 30 kHz to 100 kHz · DC current: 0 to ±11A · AC current: 1 to 11A rms, 40 Hz to 10 kHz

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Servicio y Manual del usuario
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Información

1 Introduction and Specifications ... 1-1 1-1. Introduction ... 1-3 1-2. Where to Go From Here ... 1-4 1-3. How to Use the Manuals ... 1-5 1-4. 5725A Instruction Manual ... 1-5 1-5. 5700A Operator Manual ... 1-5 1-6. 5700A Operator Reference Guide ... 1-5 1-7. 5700A Remote Programming Reference Guide ... 1-5 1-8. 5700A Service Manual ... 1-6 1-9. Specifications ... 1-6 2 Installation ... 2-1 2-1. Introduction ... 2-3 2-2. Unpacking and Inspection ... 2-3 2-3. Service Information ... 2-5 2-4. Placement and Rack Mounting ... 2-5 2-5. Cooling Considerations ... 2-5 2-6. Connecting to the 5700A Calibrator ... 2-6 2-7. Selecting Line Voltage ... 2-7 2-8. Accessing the Fuse ... 2-8 2-9. Connecting to Line Power ... 2-9 3 Operating Notes ... 3-1 3-1. Introduction ... 3-3 3-2. Front Panel Features ... 3-4 3-3. Rear Panel Features ... 3-6 3-4. Turning on the 5725A Amplifier ... 3-8 3-5. Warm Up ... 3-8 3-6. 5725A Operating Functions and Modes ... 3-9 3-7. Standby ... 3-9 3-8 Voltage Standby ... 3-10 3-9. Current Standby ... 3-11 3-10. Voltage Operate ... 3-12 3-11. Current Operate ... 3-13 3-12. Conditions That Activate the 5725A ... 3-14 Chapter Title Page 4 Theory of Operation ... 4-1 4-1. Introduction ... 4-3 4-2. Overall Functional Description ... 4-3 4-3. 1100V AC Range Functional Description ... 4-5 4-4. 11A Range Functional Description ... 4-6 4-5. Operation in the 11A DC Range ... 4-7 4-6. Operation in the 11A AC Range ... 4-7 4-7. Voltage and Current Standby Modes ... 4-7 4-8. Voltage Standby ... 4-7 4-9. Current Standby ... 4-7 4-10. How the 5700A and 5725A Communicate ... 4-8 4-11. Description of the Out-Guard Lines (5725A Side) ... 4-8 4-12. Description of the In-Guard Lines ... 4-9 4-13. Functional Summaries by Assembly ... 4-10 4-14. Detailed Circuit Description ... 4-11 4-15. Interconnect Assembly (A1) ... 4-11 4-16. Power supply Assembly (A4) ... 4-12 4-17. High Voltage Supply Section ... 4-13 4-18. Switching Section ... 4-14 4-19. Current-Limit Section ... 4-15 4-20. System Supply Section ... 4-15 4-21. Fan Supply Section ... 4-16 4-22. Digital Assembly (A5) ... 4-16 4-23. Microcomputer ... 4-16 4-24. External RAM ... 4-16 4-25. External ROM ... 4-16 4-26. EEROM ... 4-18 4-27. Data Latch ... 4-18 4-28. Strobe Lines ... 4-18 4-29. Led Driver ... 4-18 4-30. Optoisolator Link ... 4-18 4-31. Break-Detect Circuitry ... 4-19 4-32. Power Up and Reset Circuitry ... 4-19 4-33. Watchdog Timer ... 4-19 4-34. Current Amplifier Assembly (A2) ... 4-19 4-35. Error Amplifier Section ... 4-21 4-36. Output Stage Section ... 4-22 4-37. Monitor Section ... 4-22 4-38. Control and Switching Section ... 4-23 4-39. Power supply Section ... 4-23 4-40. High Voltage Amplifier (A3) ... 4-24 4-41. Input Amplifier ... 4-24 4-42. Integrator ... 4-26 4-43. Window Comparator ... 4-26 4-44. Input Clamp ... 4-26 4-45. Transconductance and Cascode Stage ... 4-27 4-46. Midstage ... 4-27 4-47. Midstage -400V Filter ... 4-27 4-48. High Voltage Heat Sink Assemblies ... 4-27 4-49. Autobias Current source ... 4-28 4-50. Autobias Sense Circuit ... 4-28 4-51. High Voltage Amplifier Feedback ... 4-29 4-52. Signal Transformers ... 4-29 4-54. High Voltage Sense Assembly (A6) ... 4-30 4-55. Sense Amplifier Section ... 4-32 4-56. Analog Monitor Section ... 4-34 4-57. Serial Interface/Guard Crossing Section ... 4-35 4-58. Analog Input Switching Section ... 4-35 4-59. Control Section ... 4-36 4-60. AC Line Voltage Selection Section ... 4-37 5 Calibration and Verification ... 5-1 5-1. Introduction ... 5-3 5-2. Where to Find Further Information ... 5-3 6 Maintenance ... 6-1 6-1. Introduction ... 6-3 6-2. Replacing the Fuse ... 6-3 6-3. Cleaning the Air Filter ... 6-4 6-4. General Cleaning ... 6-5 6-5. Cleaning PCA’s ... 6-5 6-6. Access Procedures ... 6-6 6-7. Initial Access Procedure ... 6-7 6-8. Accessing the Power supply Assembly (A4) ... 6-9 6-9. Accessing the Digital Assembly (A5) ... 6-9 6-10. Accessing the Current Amplifier Assembly (A2) ... 6-11 6-11. Accessing the High Voltage Amplifier (A3) ... 6-12 6-12. Accessing the High Voltage Sense Assembly (A6) ... 6-13 6-13. Accessing the High Voltage Output Transistors ... 6-14 6-14. Accessing the Interconnect Assembly (A1) ... 6-14 6-15. Enabling Front or Rear Binding Posts ... 6-15 7 Troubleshooting ... 7-1 7-1. Introduction ... 7-3 7-2. 5725A Fault Codes ... 7-3 7-3. Self Diagnostics ... 7-3 7-4. Manual Tests for Fault Isolation ... 7-6 7-5. Problems 1 or 2: Fault at Power-Up or When Entering Voltage Standby ... 7-7 7-6. Problem 3: Fault When Entering Voltage Operate ... 7-8 7-7. Problem 4: Fault When Entering Current Standby ... 7-8 7-8. Problem 5: Fault When Entering Current Operate ... 7-8 7-9. Reduced-Voltage Troubleshooting Mode ... 7-8 7-10. Testing the Power supply By Itself ... 7-9 8 List of Replaceable Parts ... 8-1 8-1. Introduction ... 8-3 8-2. How to Obtain Parts ... 8-3 8-3 Manual Status Information ... 8-3 8-4. Newer Instruments ... 8-3 8-5. Service Centers ... 8-4 9 Schematic Diagrams ... 9-1 Index

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Servicio y Manual del usuario
Type manuel:
Servicio y Manual del usuario
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3.82 Mbytes (4006392 Bytes)
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Revisión:
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Fecha de subida:
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