Table Of Contents - HP 3484A Operating And Service Manual

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Model 3484A
Table of Contents
TABLE OF CONTENTS
Section
Page
l.
GENERAL INFORMATION ................ 1-1
1-1 . Introduction ............ . ........... 1-
J
1-2. Options ........ .................... 1-1
1-3 . Isolated Remote Option 041 . . . . . . . . . . 1-1
1-4. Ohms Converter Option 042 .......... 1-1
1-5. True RMS Converter Option 043 ....... 1-1
1-6. Specifications .. .. ......... . ......... 1-1
1-7. Instrument and Manual Identification .... 1-1
1-8. Accessory Equipment Available . . . ... ... 1-1
Section
Page
II. INSTALLATION .. .. .. . ............ . ..... 2-1
2-1. Introduction ........................ 2-1
2-2. Initial Inspection .................... 2-1
2-3 . Installation . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-4. Installation of Isolated Remote
Option 041 ....................... 2-1
2-5. Installation of Ohms Converter
Option 042 ............. . .. . ...... 2-1
III. OPERATING INSTRUCTIONS .............. 3-1
3-1. Introduction .. . ... . . . . . ......... . ... 3-1
3-2. Front and Rear Panel Description ........ 3-1
3-3. Function Selection ................... 3-1
3-4. Range Selection ..................... 3-1
3-5. Automatic Ranging .. ......... . ..... 3-1
3-6. Remote Range Selection . . ........... 3-1
3-7. Sample Control ...................... 3-1
3-8. Automatic Sampling . . . ... . ......... 3-1
3-9. Manual and Remote Sample Control .... 3-1
3-15. Remote Triggering Rate . . . .. ......... 3-2
3-18. Interface Hold ..................... 3-2
3-19. Remote Programming ... . ... . ..... .. . . 3-3
3-20. Standard Remote Programming ........ 3-3
3-21. Isolated Remote Option 041 .......... 3-3
3-26. Remote Program Connectio n . .. ..... .. 3-4
3-27. Guard Connection ..... .. . .. .. . .... .. 3-5
3-32. DC Voltage Measurements ............. 3-5
3-33. Filter Selection .................... 3-5
3-34 . Response Time .... .......... .... . . 3-5
3-36. Measuring Speed ....... . ........ . .. 3-6
3-37. DC Voltage Measurement Procedure .... 3-6
3-38. Resistance Measurements (Option 042) . . . 3-6
3-39. Filter Selection . . . . . .... .. ..... .. . . 3-6
3-40. Response Time . . . . . . . . . . . . . . . . . . . . 3-6
3-41. Autoranging Time . .... .. ... . . . ..... 3-6
3-42. Measuring Speed ................... 3-6
3-4 3. Ohmmeter Current ... ..... . ... . .. .. 3-6
3-44.
Low
Resistance Measurements ......... 3-7
3-45 . Resistance Measurement Procedure ..... 3-7
3-46. AC Voltage Measurements (Option 043) . . 3-7
Section III .(Cont'd)
Page
3-47.
3-48.
3-5 1.
3-52.
3-53.
3-54.
Section
AC o r DC Coupled Measurement ....... 3-7
Maximum Input Voltages . ... . . ... . .. 3-7
Response Time . .. . . . ... . . ... ... .. . 3-7
Measuring Speed ........... . . ...... 3-7
Auto ranging Time .................. 3-7
AC Voltage Measurement Procedure .. .. 3-7
Page
IV. THEORY OF OPERATION ......... . . . .... .. 4-1
4-1.
4-2.
4-3.
4-4.
4-5.
4-10.
4-1 1.
4-12.
4-16.
4-17.
4-23.
4-26.
4-27.
4-31.
4-32.
4-45.
4-49.
4-52.
Section
Introduction ........................ 4 -1
DC Circuits .. . . .... . .......... . ... . . 4-1
Input Attenuator ..... . ............. 4-1
Feedback Attenuator .... . ... . . . . .... 4-1
DC Amplifier ...... . . . ........... . . 4-3
Variable Filter and Filter Amplifier ..... 4-3
Manual and Remote Filter Selection . ... 4-3
Function Selection Circuits ............ 4 -4
Range Selection Circuits ............... 4-4
Autorange Control . . . . . . . . ... .. .. ... 4-4
Range Register ..................... 4-5
Range Register Decoding . . . . . . .. .. . . . 4-5
Remote Range Selection ... .......... 4-6
Manual Range Selection .. . . . . . . ... . .. 4-6
Delay Generator and Sample Control
Circuits . ......................... 4-6
Isolated Remote Optio n 041 ........... 4-8
Ohms/DC Converter Option 042 ........ 4-9
True RMS AC Converter Option 043 . .... 4-9
Page
V. MAINTENANCE ......................... . 5-1
5-1. Introduction .......... .. ............ 5-1
5-2. Test Equipment Required ... . . . . .. .. ... 5-1
5-3. Performance Checks .................. 5-1
5-4. VDC Accuracy and Linea rity Check .... 5-1
5-5. VDC Input Resistance Check . . ... . .. .. 5-2
5-8. DC Common Mode Rejection Check .... 5-3
5-9. AC Common Mo de Rejection Check .. .. 5-3
5-10. AC Normal Mode Rejection Check ..... 5-4
5-11 . Ohmmeter Accuracy Check ........ ... 5-5
5-12. V AC Accuracy (Option 043) . .. .. ... . . 5-5
5-13. Adjustment Procedures ................ 5-5
5-16. DC Amplifier Zero and Offset
Adjustments ........ .. .. ..... . ... . 5-5
5-J 7. DC Amplifier Gain Adjustments ....... 5-7
5-18. DC Attenuator Adjustment . . .... ... . . 5-7
5-19 . Ohms Converter Adjustments(Option 042)5-7
5-22 . True RMS AC Converter Adj ustments ... 5-8
5-23. Servicing Information ............ . .... 5-8
5-24. Clean Handling Techniques ........... 5-8
5-28. Reed Replacement ........... . . . . . . . 5-9
5-31. DC Amplifier Assembly Repair and
Exchange ............ . ............ 5-9
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