Fluke 8842A User Manual

6-1
Chapter 6
Maintenance
Title Page
6-1. INTRODUCTION.................................................................................. 6-3
6-2. PERFORMANCE TEST........................................................................ 6-4
6-3. Diagnostic Self-Tests......................................................................... 6-4
6-4. DC Voltage Test................................................................................. 6-5
6-5. AC Voltage Test (Option -09 Only)................................................... 6-7
6-6. Resistance Test................................................................................... 6-8
6-7. DC Current Test................................................................................. 6-9
6-8. AC Current Test (Option -09 Only)................................................... 6-10
6-9. CALIBRATION..................................................................................... 6-10
6-10. Basic Calibration Procedure............................................................... 6-11
6-11. INITIAL PROCEDURE................................................................ 6-11
6-12. A/D CALIBRATION .................................................................... 6-12
6-13. OFFSET AND GAIN CALIBRATION ........................................ 6-14
6-14. HIGH-FREQUENCY AC CALIBRATION.................................. 6-15
6-15. Advanced Features and Special Considerations................................. 6-16
6-16. STORING VARIABLE INPUTS.................................................. 6-16
6-17. CALIBRATING INDIVIDUAL RANGES................................... 6-17
6-18. VERIFYING CALIBRATION...................................................... 6-17
6-19. ERASING CALIBRATION MEMORY....................................... 6-18
6-20. TOLERANCE CHECK................................................................. 6-18
6-21. AC CALIBRATION AT OTHER FREQUENCIES..................... 6-19
6-22. OPTIMIZING USE OF THE 5450A............................................. 6-19
6-23. Remote Calibration ............................................................................ 6-20
6-24. TIMING CONSIDERATIONS ..................................................... 6-23
6-25. REMOTE ERASURE.................................................................... 6-24
6-26. EXAMPLE CALIBRATION PROGRAM.................................... 6-24
6-27. DISASSEMBLY PROCEDURE............................................................ 6-25
6-28. Case Removal..................................................................................... 6-26
6-29. True RMS AC PCA Removal (Option -09 Only).............................. 6-30
6-30. IEEE-488 Interface PCA Removal (Option -05 Only) ...................... 6-30
6-31. Main PCA Removal........................................................................... 6-30
6-32. Front Panel Disassembly.................................................................... 6-32
6-33. REASSEMBLY PROCEDURE............................................................. 6-32
6-34. INTERNAL FUSE REPLACEMENT ................................................... 6-36

Fluke 8842A Specifications

General

Maximum Voltage	1000 V
Maximum Current	2 A
Operating Temperature	0°C to 50°C
Weight	2.5 kg
DC Voltage Range	100mV to 1000V
DC Current Range	0 to 2 A
AC Current Range	0 to 2 A
Frequency Range	20 Hz to 20kHz
Basic Resistance Accuracy	0.01%
Dimensions	216mm x 88mm x 280mm
Resistance Range	200 Ω to 20 MΩ