HP 3400A Service Manual

TABLE OF CONTENTS
Section Page
I. GENERAL INFORMATION
1-1. Introduction ........................ 1-1
1-3. Description and Purpose............. 1-1
1-8. Specifications ....................... 1-1]
1-10. Instrument and Manual Identification. .1-1
1-12. Equipment Supplied............0.... 1-1
1-14. Accessory Equipment Available....... 1-3
Section Page
I. INSTALLATION
2-1. Introduction ........................ 2-1
2-3. Initial Inspection.................... 2-1
2-5. Power Requirements................. 2-1
2-8. Installation ......................0.. 2-1
2-10. Combining Case (-hp- Models 1051A or
LOS 2A) Soni cieee Casta Se wins Me ies tees 2-1
2-12. Adapter Frame (-hp- Part No.
5060-0797)... 0... eee eee eee 2-2
2-14. Repackaging for Shipment............2-2
Section Page
III. OPERATING INSTRUCTIONS
3-1. Introduction ...................022.. 3-]
3-3. Controls and Indicators.............. 3-1
3-5. Turn on Procedure.................. 3-1
3-7. Operating Instruction........... eae edel
3-9. Applications ...................00... 3-2
3-11. RMS Value of AC Signals with DC
Component...................000. 3-2
3-13. RMS Current..........0.0...00...... 3-2
3-15. RMS AC-to-DC Converter........... 3-2
Section Page
IV. THEORY OF OPERATION
4-1. Introduction ...........2..0........... 4-1
4-3. General Description.................. 4-]
4-11. Detailed Description................. 4-2
4-12. Input Attenuator Assembly Al....... 4-2
4-15. Impedance Converter Assembly A2...4-3
4-19. Second Attenuator Assembly A3..... 4-3
4-22. Video Amplifier Assembly A4........ 4-3
4-27. Chopper Op Amp Assembly A6 and
Thermocouple Pair (Part of A4)....4-4
4-36. Power Supply Assembly A7.......... 4-5
4-39. Regulator Operation................ 4-5
4-41. +75 Volt Supply....2..0..00...0... 4-5
4-43. —17.5 Volt Supply.........0020.00.. 4-5
Section Page
V. MAINTENANCE
5-1. Introduction ........................ 5-]
5-3. Test Equipment..................... 5-1
5-5. Performance Checks................. 5-1
5-7. Accuracy, Linearity, and DC Output
Check 3 3 este a esate ate §-1
5-9. Frequency Response Check.......... 5-4
5-10. Input Impedance Check............. §-5
5-11. Resistance Check...................5-5
5-12. Capacitance Check.................545
5-13. Crest Factor Check................. 5-6
5-14. Output Noise Check................ 5-7
5-15. Adjustment and Calibration
Procedures................00cceees 5-7
5-17. Mechanical Meter Zero.............. 5-7
5-19. Power Supply Checks............... 5-8
5-21. Low Frequency Calibration.......... 5-8
5-22. Amplifier Offset Adjustment......... 5-8
5-23. Amplifier Gain Adjustment.......... 5-8
5-24. 1/10 Scale Adjustment.............. 5-8
$-25. 1 Volt Adjustment.................. 5-9
5-26. High Frequency Calibration......... 5-10
5-27. Amplifier Gain Adjustment......... 5-10
5-28. Input Attenuator Adjustment....... 5-10
5-29. Second Attenuator Adjustment...... 5-11
5-30. Troubleshooting Procedures......... $-11
5-35. Checking Thermocouples TC410 and
ST C402 Seta coheed wae ae 5-11
5-38. Thermocouple Replacement......... 5-14
5-40. Servicing Etched Circuit Boards...... 5-15
5-43. A6 Assembly (03400-66512) Retrofit
PROCEGUIC:: S45 end soda al owetts 5-16
Section Page
VI. CIRCUIT DIAGRAMS
: 6-1. Introduction ..................0000.. 6-1
6-3. Schematic Diagrams................. 6-1
6-6. Parts Location Diagrams............. 6-1
Section Page
VU. REPLACEABLE PARTS
7-1. Introduction ...............0...002.. 7-1
7-4. Ordering Information................ 7-]
7-6. Non-Listed Parts.................... 7-1
7-8. Parts Changes.....................0.. 7-2
APPENDIX
A. BACKDATING

HP 3400A Specifications

General

Brand	HP
Model	3400A
Category	Measuring Instruments
Language	English