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HP
8560A manual
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450 pages, 7.81 Mb
12-18
Display/Power Supply Section
Contents
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Certification
Warranty
Assistance
Safety Symbols
General Safety Considerations
HP 8560A Spectrum Analyzer Documentation Outline
Manuals Shipped with Your Instrument
Options
Contents
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Figures
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Tables
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General Information
Manual Text Conventions
Serial N.umbers Covered by This Manual
Instrument Variations
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HP 85629B Test and Adjustment Module
Service Kit
Recommended Test Equipment
Electrostatic Discharge
Returning Instruments for Service
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Sales and Service Offices
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Adjustment Procedures
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Using the TAM
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1. High-VoltagePower Supply Adjustment
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2. Display Adjustment
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3. IF Bandpass Adjustment
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4. IF Amplitude Adjustments
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5. DC Log Amplifier Adjustments
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6. Sampling Oscillator Adjustment
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7. YTO Adjustment
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8. First LO Distribution Amplifier Adjustment
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9. Tracking Generator Power Level Adjustments
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10. Frequency Response Adjustment
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11. Calibrator Amplitude Adjustment
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12. 10 MHz Reference Adjustment (Non-Option003 only)
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13. Demodulator Adjustment
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14. External Mixer Bias Adjustment
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15. External Mixer Amplitude Adjustment
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16. Second IF Gain Adjustment
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17. Signal ID Oscillator Adjustment
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18. 600 MHz Amplitude Adjustment
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19. 10 MHz Reference Adjustment (Option 003)
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20. Tracking Oscillator Adjustment (Option 002)
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Assembly Replacement
Access to Internal Assemblies
Cable Color Code
Procedure 1. Analyzer Cover
Procedure 2. Al Front Frame/A18 CRT
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Procedure 3. AlAl Keyboard/Front Panel Keys
Procedure 4. AlA RPG
Procedure 5. A2, A3, A4, and A5 Assemblies
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Procedure 6. A6 Power Supply Assembly
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Procedure 7. A6Al High Voltage Assembly
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Procedure 8. A7 through Al3 Assemblies
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A7 1st LO Distribution Amplifier
A8 Low Band Mixer
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All YTO
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Procedure 9. Al4 and Al5 Assemblies
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Procedure 10. Al7 CRT Driver
Procedure 11. Bl Fan
Procedure 12. BTl Battery
Procedure 13. Rear Frame/Rear Dress Panel
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Procedure 14. W3 Line Switch Cable
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Procedure 15. EEROM (A2U501)
Procedure 16. A21 OCXO (Option 003)
Replaceable Parts
Parts List Format
Firmware-DependentPart Numbers
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c iG
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Major Assembly and Cable Locations
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General Troubleshooting
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Troubleshooting to a Functional Section
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Error Messages
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Block Diagram Description
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ADC/lnterface Section
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Troubleshooting Using the TAM
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Keyboard/RPG Problems
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Triggering Problems
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Flatness Control (RF Gain DACs)
A3 Assembly’s Video Circuits
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A3 Assembly’s ADC Circuits
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A3 Assembly’s Control Circuits
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IF Section
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Automatic IF Adjustment
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Performance Test Failures
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A4 Assembly’s Log Amplifier Circuits
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A5 IF Section
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A4 Assembly’s Cal Oscillator Circuit
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Controller Section
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Digital Signature Analysis (DSA)
Display Problems
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//I
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Analog Zero-SpanProblems
Frequency-CountMarker Problems
Frequency Counter
State- and Trace-StorageProblems
Keyboard Problems
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Synthesizer Section
Confirming a Faulty Synthesizer Section
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Troubleshooting Test Setup
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Frequency Span Accuracy Problems
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Unlocked YTO PLL
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Unlocked Roller Oscillator PLL
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Unlocked Offset Lock Loop (Sampling Oscillator)
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Unlocked Reference PLL
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Sampler and Sampler IF
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Sweep Generator Circuit
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A21 OCXO (Option 003 only)
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RF Section
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Low Band Problems (50 Hz to 2.9 GHz)
Low Band Problems
A7 LODA (LO Distribution Amplifier)
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Al4 Frequency Control Assembly
Al5 RF Assembly
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Display/Power Supply Section
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Blank Display
Display Distortion
Focus Problems
Intensity Problems
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A6 Power Supply Assembly
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Component-LevelInformation Packets