Hewlett Packard 1200A Oscilloscope
Manufacturer:
Model:
1200A
Date:
1976
Category:
Group:
Description:
Dual Trace Oscilloscope
Information
Hewlett-Packard Models 1200A and 1200B Dual Trace Oscilloscopes are electrically identical, general purpose instruments. Model 1200A is a cabinet version with a built-in tilt stand, convenient carrying handle on top, and feet mounted on both bottom and rear for either bench or upright operation. Designed primarily for rack mounting, the Model 1200H uses only 5-1/4 vertical inches of rack space and has front panel handles for portability. Since all circuitry is solid state, power consumption is only about 50 watts, and a cooling fan is not needed.

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Service and User Manual
Manual type:
Service and User Manual
Pages:
112
Size:
6.32 Mbytes (6628328 Bytes)
Language:
english
Revision:
Manual ID:
01200-90904
Date:
01 November 1976
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
30 December 2017
MD5:
61a9cc60ad5aee2c897442abb02bc1b4
Downloads:
231
Information
C.ENKRAL INFORMATION I-lJ Introduction ... 1-3. Instrument Description ... 1-5. General ... * — * ... 1-8, Vertical Circuits ... 1-13, Horizontal Circuits ... 1-19, 1 Options, ... 1-21. Instruments Covered by Manual .. II INSTALLATION ... 2-1. Introduction ... 2-3. Initial Inspection ... 2-5. Powpr Cords and Receptacles ... 2-7. Power Requirements ... 2-10. Repacking for Shipment ... III OPERATION ... 3*1. Introduction ... 3*3. Controls and Connectors . 3-23. Operating Instructions ... 3-25. Applying Input Signals ... 3-27. Trigger Signal Requirements — 3-30. Operating Procedures ... IV PRINCIPLES OF OPERATION ... <1-1. Introduction ... I ... 4-3. General Theory ... 4-13. Horizontal Module ... 4-25. Output Module ... 4*34. Power Supply Modules ... 4-37. Detailed Circuit Theory ... 4-53. Horizontal Module ... 4-94. Output Module ... 4-113. Power Supply Modules ... V PERFORMANCE CHECK AND ADJUSTMENTS ... 5-1. Introduction ... 5-3. Test Equipment ... 5-5. Performance Check and Adjustments ... 5-9. Preliminary Control Settings____ 5-10. Preliminary Checks ... 5-12. Intensity ... 5-13. Focus ... 5-14. Trace Align ... 5-15. Amplifier Balance ... 5-16. Vertical Positioning ... 5-17. Beam Finder ... 5-18. Performance Check Procedure ... 5-19. Vertical Amplifier Gain ... 5-20. Calibrator ... 5-21. Vertical Bandwidth ... 5-22. Noise ... 5-23. Common Mode Rejection Ratio .. 5-24. A vs B Phase Shift ... 5-25. Channel Isolation ... 5*26. Trigger Amplitude ... 5-27. Trigger Point and Slope ... 5-28. Sweep Time ... 5-29. Sweep Vernier ... 5-30. Magnified Sweep ... 5-31. Single Sweep ... 5-32. Horizontal Amplifier Gain ... 5*33. Horizontal Vernier ... 5-34. Horizontal Bandwidth ... 5*35. Adjustment Procedure ... 5-39. Preliminary Setup ... 5-41. Low Voltage Power supply ... 5-42. High Voltage Power supply ... 5-43. Astigmatism ... 5-44. Intensity Limit ... 5-45. Horizontal Gain ... 5-46. Horizontal Vernier Balance ... 5*47. Horizontal Attenuator Compensation ... 5-48. Auto Triggering ... 5-49. Horizontal Positions Centering ... 5-5Ö. Magnifier Centering ... 5-51. Sweep Time Calibration ... 5-52. Vertical Vernier and Vertical Amplifier Balance ... 5-53. Output Amplifier Gain ... 5-54. Input Capacitance and Attenuator Compensation____ 5-55. CMRR Balance ... rI REPLACEABLE PARTS ... 1 ... 6-1. Introduction ... 6-3. Ordering Information ... 6-6. Direct Mail Order System ... II MANUAL CHANGES ... ! 7*1. Introductions ... 7-3. Manual Changes ... 7-5. Option 006 ... III SCHEMATICS AND TROUBLESHOOTING ... 8-1. Introduction ... 8-3. , Schematics ... 8-10. Component Location 8*13. Troubleshooting ... 8-in. Fro nt-pa net Controls ... 8-17. Per forma net: Cheek ... 8-19. Troubleshooting Table ... 8-26. Visual Chec’s ... 8-28. Waveforms and Voltages ... 8-33. Final Cheeks ... 8-35. Repair and Replacement ... 8-37. Servicing Etched Circuit lizards. LIST C Figure Title ] 2-1. Model 1200A Power Cable Configurations ... 2*2. Model 12Ü0B Power Cable Configurations • ... 3*1. Controls and Connectors ... „ .7-2. Bandwidth Upper Limit vs Selected Capacitance ... 4-1. Channel A Attenuator and Preamplifier Block Diagram ... •1-2. Horizontal Preamplifier Block Diagram ... — •1-3. Trigger Generator and Horizontal Amplifier Block Diagram ... 4-I. Sweep Generator Block Diagram ... 4*5. Multivibrator Block Diagram ... •1-6. Output Amplifier Block Diagram ... •1-7. Regulated Power supply Block Diagram ... , ... •1-8. I,ow Voltage Power supply Block Diagram ... — 4-9. High Voltage Power supply Block Diagram ... 4-10. Overall Block Diagram ... 5-1. , Low Voltage Power supply Adjustment ... 5-2* High Voltage Power supply Adjustments ... ... 5-3. Horizontal Module Adjustments ... 5-1. Vertical Preamplifier Module Adjustments ... 5-5. Dual Channel Output Amplifier Adjustments ... 7-1. TI Primary Circuits ... 7-2. I,ow Voltage Power supply, A5, Component Identification ... 7*3. High Voltage Regulator, A6, Component Identification ... 7*4. Option 006, Schematic Connection ... 8-39. Semiconductor Replacement ... 8-12. CRT Removal and Replacement ... 8-45. Vertical Preamplifier Module Removal and Replacement ... 8-48. Horizontal Module Removal and Replacement ... 8-51. Dual Channel Output Board Removal and Replacement — 5TRATIONS Figure Title I 8-1. Semiconductor Identification . ... 8-2. Model I200B Bottom View ... 8-3. Model 1200A Top View ... 8-4. Model 1200A Bottom View — ... 8-5. Model 1200A Exploded View ... 8-6. Model 1200B Exploded View ... 8-7. 100 j^V Preamplifier Module, Al, Component Identification ... 8-8. Volts/Division Switch, A1A2, Componei.t Identification ... 8-9. Vertical Preamplifier, AlAl, Component Identification ... 8*10. Channel A Attenuator and Preamplifier Block Diagram ... 8-11. Channel A Preamplifier Module Measurement Conditions and Waveforms ... 8-l*>. Channel A Preamplifier Modulo Schematic ... 8-13. 100 ^V Preamplifier Module,1 A2, Component Identification ... 8*14. Volts/Division Switch, A2A2, Component Identification ... 8-15. Vertical Preamplifier, A2A 1, Component Identification ... 8-16. Channel B Attenuator and Preamplifier Block Diagram ... 8-17. Channel B Preamplifier Module Measurement Conditions and Waveforms ... 8*18. Channel B Preamplifier Module Schematic ... 8*19. Dual Channel Output Amplifier, A3, Component Identification ... 8-20. Dual Channel Output Amplifier Block Diagram ... 8-21. I)uj1 Channel Output Amplifier Waveforms ... 8*22. Dual Channel Output Amplifier Schematic ... i 8*23. Multivibrator, A3, Component Identification ... i

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