Hewlett Packard 411A Multimètre analogique
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Modèle:
411A
Date:
1962
Catégorie:
Groupe:
Description:
RF Millivoltmeter
Information
GENERAL DESCRIPTION.
1-2. The Hewlett-Packard Model 411A RF Millivoltmeter is a
sensitive ac voltmeter which will measure accurately from
0.01 volt rms to 10 volts rms full scale in the frequency
range of 500 kc to 1000 me (1 gc). The 411A Probe when used
without Accessories will respond to frequencies up to 4 gc
and may be used as an indicator up to this frequency. The
Model 411A is supplied with a BNC-type screw-on Probe tip
providing easy and rapid measurement at low frequencies.
Other Probe tips, which make possible convenient measurement
at 1000 me, are available. The Model 411A has a recorder
output with an adjustable level.
Type manuel:
Service et Manuel de l'utilisateur
Pages:
38
Taille:
9.90 Mbytes (10383666 Bytes)
Langue:
english
Révision:
Manuel-ID:
01193-1
Date:
1962 02 01
Qualité:
Document scanné, la lecture en partie mal, en partie illisible.
Date de transfert:
2017 12 30
MD5:
d8e63a0bae1bbf507e6a8d845a02a5a5
Téléchargements:
450
Information
I GENERAL INFORMATION ... 1-1
1-1. General Description ... 1-1
1-3. Probe Tips Available ... • 1-1
1-6. Instrument Identification ... 1-1
1-8. Power Cable ... 1-1
II PREPARATION FOR USE ... 2-1
2-1. Unpacking & Mechanical Inspection • 2-1
2-4. Operation Check ... 2-1
2-6. Installation ... 2-1
2-8. Power Requirements ... 2-1
2-10. Operation on 115 or 230 Volts • • • 2-1
2-13. Rack-Mount Model ... 2-1
2-15. Preparation for Storage and Shipment 2-1
2-18. Storage ... 2-1
III OPERATION ... 3-1
3-1. Preliminary Considerations ... 3-1
3-5. Probe Tips ... 3-1
3-17. Selection of Probe Tip ... 3-2
3-19. Installation of Probe Tips ... 3-2
3-22. Mechanical Meter-Zero ... 3-2
3-24. Zero Adjustment ... 3-2
3-27. Interpreting Reading ... 3-2
IV PRINCIPLES OF OPERATION ... 4-1
4-1. Introduction ... 4-1
4-7. Probe ... 4-2
4-10. Modulator ... 4-2
4-12. Chopper Amplifier ... 4-2
4-14. Demodulator ... 4-2
Section Page
IV PRINCIPLES OF OPERATION (Cont’d)
4-16. Cathode Follower ... 4-2
4-20. Modulator and 100 kc Oscillator • • 4-2
4-22. Power Amplifier ... 4-2
4-25. Feedback ... 4-2
V MAINTENANCE ... 5-1
5-1. Introduction ... 5-1
5-6. Test Equipment ... 5-1
5-8. Removing the Cabinet ... 5-2
5-10. Cartridge and/or Cable Replacement 5-2
5-13. Tube Replacement ... 5-2
5-16. Troubleshooting ... 5-2
5-19. Measure Power supply Voltages . 5-2
5-21. Measure Ripple ... 5-3
5-24. Downscale Meter Circuit ... 5-3
5-26. Modulator/Amplifier Tuning. . . 5-3
5-30. Modulator/Amplifier Gain . . . 5-5
5-31. Upscale Meter Circuit ... 5-5
5-33. Output Circuit ... 5-5
5-34. Bias Adjustment ... 5-5
5-35. Hum Balance ... 5-5
5-36. Zero Control ... 5-5
5-37. Chopper Amplifier Gain ... 5-5
5-40. Maintenance Procedures ... 5-5
5-41. Transistor or Tube Replacement . 5-5
5-43. Calibration ... 5-5
5-45. Final Test . . .* ... 5-7
VI REPLACEABLE PARTS ... 6-1
6-1. Introduction ... 6-1
6-4. Ordering Information ... 6-1