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6-1
Chapter 6
Maintenance
Contents Page
6-1. Introduction .......................................................................................... 6-3
6-2. Self-Test Diagnostics and Error Codes ................................................ 6-3
6-3. Cleaning................................................................................................ 6-4
6-4. Fuse Replacement................................................................................. 6-4
6-5. Performance Test.................................................................................. 6-6
6-6. Configuring the Performance Test Setup......................................... 6-6
6-7. Initializing the Performance Test Setup........................................... 6-9
6-8. Accuracy Performance Tests ........................................................... 6-11
6-9. Volts DC Accuracy Test (2640A) ............................................... 6-11
6-10. Volts DC Accuracy Test (2645A) ............................................... 6-12
6-11. Volts AC Accuracy Test.............................................................. 6-13
6-12. Frequency Accuracy Test............................................................ 6-14
6-13. Analog Channel Integrity Test..................................................... 6-15
6-14. Computed Channel Integrity Test................................................ 6-15
6-15. Thermocouple Temperature Accuracy Test ................................ 6-16
6-16. Open Thermocouple Response Test............................................ 6-16
6-17. 2-Wire Resistance Accuracy Test (2640A)................................. 6-17
6-18. 2-Wire Resistance Accuracy Test (2645A)................................. 6-18
6-19. 4-Wire Resistance Accuracy Test (2640A)................................. 6-20
6-20. 4-Wire Resistance Accuracy Test (2645A)................................. 6-23
6-21. RTD Temperature Accuracy Test (Resistance) (2640A)............ 6-24
6-22. RTD Temperature Accuracy Test (Resistance) (2645A)............ 6-25
6-23. RTD Temperature Accuracy Test (DIN/IEC 751 RTD) ............. 6-25
6-24. Digital Input/Output Tests ............................................................... 6-26
6-25. Digital I/O Output Test................................................................ 6-26
6-26. Digital Input Test......................................................................... 6-27
6-27. Totalizer Tests.................................................................................. 6-28
6-28. Totalizer Count Test.................................................................... 6-28