HP 3478A Technical Manual Download

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TM 11-6625-3071-14

TABLE OF CONTENTS

Section Page
I. GENERAL INFORMATION ........................... 1-1

1-1. Introduction ....................................... 1-1
1-3. Section I, General Information.......... 1-1
1-5. Section II, Installation Procedures .... 1-1
1-7. Section III, Operation........................ 1-1
1-9. Section IV, Performance Test and

Calibration 1-1

1-11. Section V, Replaceable Parts........... 1-1
1-13. Section VI, Backdating ..................... 1-1
1-15. Section VII, Service .......................... 1-1
1-17. Appendix A ....................................... 1-1
1-19. Description........................................ 1-1
1-22. Specifications ................................... 1-1
1-24. Instrument and Manual

Identification...................................... 1-1

1-27. Options ............................................. 1-2
1-29. Accessories Available....................... 1-2

Section Page
II. INSTALLATION ............................................. 2-1

2-1. Introduction ....................................... 2-1
2-3. Initial Inspection ................................ 2-1
2-5. Power Requirements ........................ 2-1
2-7. Line Frequency and Line

Voltage Selection.............................. 2-1

2-9. Power Cords and Receptacles ......... 2-2
2-11. Grounding Requirements ................. 2-1
2-13. Bench Use and Rack Mounting ........ 2-2
2-14. Bench Use ........................................ 2-2
2-16. Rack Mounting.................................. 2-3
2-18. HP-IB Interface Connections ............ 2-3
2-21. Address Selection............................. 2-3
2-24. Environmental Requirements ........... 2-3
2-25. Operating and Storage

Temperature ..................................... 2-3

2-27. Repackaging for Shipment ............... 2-4

Section Page
III. OPERATION ................................................. 3-1

3-1. Introduction ....................................... 3-1
3-4. General Information.......................... 3-1
3-5. AC Power Operation......................... 3-1
3-7. Turn-On ............................................ 3-1
3-10. Display .............................................. 3-1
3-12. Input Terminals ................................. 3-3
3-15. Input Terminals Cleaning.................. 3-3
3-17. Front Panel Operation ...................... 3-3
3-18. DC Volts Measurements................... 3-3
3-22. AC Volts Measurements................... 3-4
3-26. Resistance Measurements ............... 3-4
3-30. DC Current Measurements............... 3-5
3-34. AC Current Measurements............... 3-5
3-38. Ranging ............................................ 3-5
3-43. Triggering ......................................... 3-5
3-50. Shifted Operation.............................. 3-6
3-51. General ............................................. 3-6

3-54. Number of Digits Displayed.............. 3-6
3-57. Autozero ........................................... 3-7
3-60. Self-Test/Reset Operation................ 3-7
3-63. Calibration ........................................ 3-7
3-66. Miscellaneous Operations ................ 3-8
3-67. Voltmeter Complete ........................ 3-8
3-69. Remote Operation ............................ 3-8
3-70. General............................................. 3-8
3-74. 3478A Response to Bus Messages . 3-8
3-92. 3478A Addressing ............................ 3-10
3-96. Talk-Only Mode (No Controller) ....... 3-10
3-98. 3478A HP-IB Programming.............. 3-11
3-117. Advanced Programming................... 3-14

Section Page
IV. PERFORMANCE TEST AND

CALIBRATION .............................................. 4-1
4-1. Introduction....................................... 4-1
4-4. Equipment Required......................... 4-1
4-6. DC Volts Test and Calibration .......... 4-1
4-10. AC Volts Test and Calibration ......... 4-2
4-12. Ohms Test and Calibration .............. 4-2
4-15. DC Current Test and Calibration ...... 4-3
4-20. AC Current Test and Calibration ...... 4-3
4-24. Test Cards........................................ 4-3
4-26. Calibration Cycle .............................. 4-3
4-28. Test Failure ..................................... 4-3
4-30. Instrument Set-Up ............................ 4-3
4-32. Instrument Specification ................... 4-3
4-35. Specification Breakdown ................. 4-4
4-39. Temperature Coefficient

(Reference Temperature) ................ 4-4

4-41. Test Consideration ........................... 4-4
4-42. General............................................. 4-4
4-44. Ambiguous Region ........................... 4-4
4-47. Performance Test............................. 4-5
4-49. DC Volts Test ................................... 4-5
4-54. DC Current Test ............................... 4-7
4-59. AC Volts Test ................................... 4-8
4-64. AC Current Test ............................... 4-9
4-69. Ohms Test.4-10 ............................... 4-10
4-76. Combined Calibration and

Performance Tests ........................... 4-11

4-77. General............................................. 4-11
4-80. Calibrating the 3478A....................... 4-12
4-82. Calibration Messages....................... 4-13
4-84. Calibration Procedures..................... 4-13
4-86. DC Volts Calibration and Test .......... 4-13
4-90. DC Current Calibration and Test ...... 4-15
4-94. AC Volts Calibration and Test .......... 4-16
4-99. AC Current Calibration and

Test (Optional................................... 4-18

4-103. Ohms Calibration and Test .............. 4-18

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