Equipment information

Fluke 8506A Digital multimeter
Manufacturer:
Model:
8506A
Date:
1983
Category:
Group:
Description:
Thermal True RMS Multimeter

Information

The multimeter features 6-1/2 digit resolution, full annunciation and simplicity of operation. Modular construction, microprocessor control, and a bus structure provide excellent flexibility. Memory programming from the front panel (or through a remote interface) controls all measurement parameters, mathematical operations and special operations. The standard hardware configuration allows for measurement of thermal true-rms volts on eight ranges and dc volts in five ranges. An averaging mode is available to automatically optimize display resolution and stability for each range in dc volts, resistance, and dc current functions. Extended resolution is also available in the ac volts function. Optional modules are available for dc current (five ranges), and resistance (eight ranges) in two-wire or four-wire arrangements. Thermal True-RMS Conversion The thermal true-rms feature allows the operator to measure the true-rms value of an ac signal at accuracies of up to .012% with a reading rate of one every six seconds. This response time compares favorably with that of existing thermal transfer standards which can take up to five minutes to complete a measurement. Modular Construction Considerable versatility is realized through unique modular construction. All active components are contained in modules which plug into a mainframe motherboard. This module-to-motherboard mating, combined with bus architecture and microprocessor control, yields ease of option selection. Microprocessor Control All modules function under direct control of a microprocessor based controller. Each module is addressed by the controller as virtual memory. Scaling factors and offset values can be applied separately, stored in memory, and automatically used as factors in all subsequent readings. Digital filtering utilizes averaged samples for each reading. Software Calibration The 8506A features microprocessor-controlled calibration of all ranges and functions. Any range can be calibrated using a reference input of any known value from 60% of range to full scale. Software calibration can be performed using front-panel or remote control, allowing recertification without opening the case or removing the multimeter from the system. Recirculating Remainder A/D Conversion The multimeter adapts Fluke’s patented recirculating remainder (R2) A/D conversion technique to microprocessor control. This combination provides fast, accurate, linear measurements and long-term stability. Options and Accessories Remote interfaces, a dc current converter, and an ohms Converter are among the options and Accessories available for use with the multimeter. Refer to Tables 1-1 and 1-2 for complete listings. Any one of the three Remote Interface modules (Option 05, 06, or 07) may be installed at one time,

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Datasheet
Manual Type:
Datasheet
Pages:
5
Size:
671.14 Kbytes (687249 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
2016 01 28
MD5:
07971e36fd58b6b7fc0e591282ea318b
Downloads:
1172
Service and User Manual
Manual Type:
Service and User Manual
Pages:
316
Size:
15.97 Mbytes (16745554 Bytes)
Language:
english
Revision:
1
Manual-ID:
638858
Date:
1985 10 01
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
2018 01 14
MD5:
1a026eb659d8529e8dde6a7c1d501cb0
Downloads:
820

Information

1-1. INTRODUCTION ... 1-1 1-3. DESCRIPTION ... 1-1 1-5. Thermal True-RMS Conversion ... 1-1 1-7. Modular Construction ... , ... 1-1 1-9. Microprocessor Control ... 1-1 1-11. Software Calibration ... 1-1 1-13. Recirculating Remainder A/D Conversion ... 1-1 1-15. Options and Accessories ... 1-1 1-17. SPECIFICATIONS ... 1-1 2 OPERATING INSTRUCTIONS ... 2-1 2-1. INTRODUCTION ... 2-1 2-3. SHIPPING INFORMATION ... ■ ... 2-1 2-6. INSTALLATION ... 2-1 2-9. OPERATING FEATURES ... 2-1 2-11. OPERATING NOTES ... 2-1 2-12. Input Power ... 2-1 2-14. Fuse Location ... 2-1 2-16. Required Hardware ... 2-4 2-20. Power-Up Configuration ... 2-4 2-22. Display ... 2-6 2-46. Front Panel Push Buttons ... 2-10 2-53. Measurement Terminals and Controls ... 2-21 2-69. Function ... 2-22 2-72. Measurement Parameters ... 2-24 2-102. Mathematic Operations ... 2-26 2-115. Special Operations ... 2-27 2-124. Remote Control ... 2-28 2-128. Calibration Mode ... 2-28 2-138. Scan Advance ... 2-29 2-140. Systems Use ... 2-29 2-142. OPERATION ... 2-29 2-143. Initial Turn-On ... 2-29 2-147. Initial Set-Up ... 2-29 2-152. Measurement Instructions ... 2-30 2-170. APPLICATIONS ... 2-32 2A REMOTE PROGRAMMING COMMANDS ... 3 THEORY OF OPERATION ... 3-1 3-1. INTRODUCTION ... 3-1 3-3. BLOCK DIAGRAM DESCRIPTION ... 3-1 3-4. Bus Structure ... 3-1 3-10. Controller ... 3-2 3-20. Front Panel ... 3-6 3-22. DC Signal Conditioner ... 3-6 3-24. Active Filter ... 3-6 3-26. Fast R2 A/D Converter ... 3-6 3-31. Thermal True-RMS Converter ... 3-8 3-40. Front/Rear Switch Assembly ... 3-10 3-42. CIRCUIT ANALYSIS ... 3-10 3-43. Introduction ... 3-10 3-45. Controller ... 3-10 3-65. Front Panel ... 3-13 3-68. DC Signal Conditioner ... 3-15 3-72. Filter/Externa! Reference ... 3-15 3-76. Fast R2 A/D Converter ... 3-15 3-90. Thermal True RMS-Converter Module ... 3-20 4 MAINTENANCE ... 4-1 4-1. INTRODUCTION ... 4-1 4-3. SERVICE INFORMATION ... 4-1 4-6. GENERAL MAINTENANCE ... 4-1 4-7. Top and Bottom Cover Removal and installation ... 4-1 4-9. Line Voltage Selection ... 4-1 4-11. Fuse Replacement ... 4-1 4-13. Module Installation ... 4-4 4-15. Module Removal ... 4-4 4-17. Module Disassembly and Reassembly ... 4-4 4-19. Calibration Memory Replacement ... 4-4 4-21, Front Panel PCB Removal ... 4-5 4-23. Power Supply PCB Assembly Removal ... 4-5 4-25. Power Supply Interconnect Assembly Removal ... 4-5 4-27. Front/Rear Switch Assembly ... 4-5 4-32. Motherboard PCB Removal ... 4-6 4-34. Cleaning Instructions ... 4-6 4-36. PERFORMANCE TEST ... 4-6 4-37. Introduction ... 4-6 4-40. DC Performance Test ... 4-7 4-49. Thermal True-RMS Converter Performance Test ... 4-9 4-54. CALIBRATION ADJUSTMENTS ... 4-17 4-55. Introduction ... 4-17 4-57. Initial Procedure ... 4-17 4-59. Power supply ... 4-17 4-61. DC Calibration Procedure ... 4-18 4-85. AC Calibration Procedure ... 4 -21 4-108. TROUBLESHOOTING ... 4-26 4-114. Troubleshooting Notes ... 4-28 4-119. Non-recurring Adjustments ... 4-28 4-130. Factory Selected Component Replacement Procedures ... 4-45 4-142. SELECTED CAPACITOR ORDERING INFORMATION ... 4-47 5 LIST OF REPLACEABLE PARTS ... 5-1 TABLE OF CONTENTS ... 5-1 5-1. INTRODUCTION ... 5-2 5-4. HOW TO OBTAIN PARTS ... 5-2 8 OPTION AND ACCESSORY INFORMATION ... 6-1 TABLE OF CONTENTS ... 6-1 7 GENERAL INFORMATION ... 7-1 7A MANUAL CHANGE INFORMATION ... 7A-1 78 Software CALIBRATION ... 7B-1 8 SCHEMATIC DIAGRAMS ... 8-1 TABLE OF CONTENTS ... 8-1

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