HP 3580A Operating And Service Manual page 8

Model 3580A Table of Contents
LIST OF ILLUSTRATIONS
Figure Page
2-1. Power Receptacles. . . . . . . . . . . . . . . . . . . . . 2-1
3-1. Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3-2. Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3-3. Equivalent Input Circuit . . . . . . . . . . . . . . . . . 34
3-4. Graph Ztys. Frequency . . . . . . . . . . . . . . . . . 34
3-5. Power Line Ground Loop . . . . . . . . . . . . . . . . 3-5
3-6. Measurement Configurations . . . . . . . . . . . . . . 3-6
3-7. Input Section . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3-8. Maximum Input Index . . . . . . . . . . . . . . . . . . 3-7
3-9. Noise vs. Frequency . . . . . . . . . . . . . . . . . . . . 3-8
3-10. Amplitude Section (Linear Mode) ........... 3-9
3-11. Amplitude Section (Log Mode) ........... .3-11
3-12. Cal Signal. . . . . . . . . . . . . . . . . . . . . . . . . . .3-12
3-13. Frequency Tuning . . . . . . . . . . . . . . . . . . . . .3-12
3-14. IF Filter Response . . . . . . . . . . . . . . . . . . . . .3-13
3-15. Response Of CW Signals . . . . . . . . . . . . . . . . .3-13
3-16. Two Signals In Passband . . . . . . . . . . . . . . . . .3-13
3-17. Large Signal Hides Small Signal ........... .3-14
3-18. Small Signal Resolved . . . . . . . . . . . . . . . . . . .3-14
3-19. Noise Sidebands (1 Hz BW) . . . . . . . . . . . . . . .3-14
3-20. Zero Response (300 Hz BW) . . . . . . . . . . . . . .3-15
3-21. Amplitude vs. Time . . . . . . . . . . . . . . . . . . . .3-16
3-22. Frequency Out Of Range . . . . . . . . . . . . . . . .3-16
3-23. Margin Below 0 Hz . . . . . . . . . . . . . . . . . . . .3-16
3-24. Frequency vs. Time (Log Sweep) .......... .3-18
3-25. Log Sweep (300 Hz BW) . . . . . . . . . . . . . . . . .3-18
3-26. Log Amplitude vs. Log Freq. Plot of 20 kHz
Notch Filter (30 Hz BW) . . . . . . . . . . . . . .3-19
3-27. Plot Using Conventional Sweep (15 minutes) .. .3-21
3-28. Plot Using Adaptive Sweep . . . . . . . . . . . . . . .3-21
3-29. Stored Trace and Current Trace
Displayed Simultaneously . . . . . . . . . . . . . .3-22
3-30. Store Button Released . . . . . . . . . . . . . . . . . .3-22
3-31. Tracking Oscillator . . . . . . . . . . . . . . . . . . . .3-24
3-32. Input Configurations (Option 002) ......... .3-25
3-33. Voltage Selection . . . . . . . . . . . . . . . . . . . . .3-26
3-34. Typical Turn On Display . . . . . . . . . . . . . . . . .3-26
3-35. Probe Compensatjon . . . . . . . . . . . . . . . . . . .3-29
4-1. Simplified Block Diagram . . . . . . . . . . . . . . . . 4-3
4-2. Typical Crystal Filter Stage . . . . . . . . . . . . . . . 44
4-3. Crystal Filter . . . . . . . . . . . . . . . . . . . . . . . . 44
4-4. IF Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
4-5. Linear Amplifier . . . . . . . . . . . . . . . . . . . . . . 4-5
4-6. Log Amplifier . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4-7. Typical Log Amplifier Stage . . . . . . . . . . . . . . 4-7
4-8. Log Amplifier Input And Output Levels ...... 4-7
4-9. Video Output. . . . . . . . . . . . . . . . . . . . . . . . 4-8
4-10. Frequency and Sweep Section . . . . . . . . . . . . . 4-9
4-11. Adaptive Sweep Routine . . . . . . . . . . . . . . . . . 4-9
4-12. Linear Sweep Generator . . . . . . . . . . . . . . . . . 4-10
4-13. ASM Chart (Adaptive Sweep) . . . . . . . . . . . . . 4-12
4-14. Frequency Out Of Range . . . . . . . . . . . . . . . .4-14
4-15. VTO And Tracking Oscillator (AS) ......... .4-14
4-16. Precision Monostable . . . . . . . . . . . . . . . . . . .4-15
4-17. Basic Log Sweep Generator . . . . . . . . . . . . . . . 4-16
4-18. Overall Log Sweep Generator . . . . . . . . . . . . . .4-16
Figure Page
4-19. Storing A Trace . . . . . . . . . . . . . . . . . . . . . . .4-17
4-20. Displaying a Stored Trace . . . . . . . . . . . . . . . .4-18
4-21. Digital Storage And Display Sections ........ .4-19
4-22. Digital Storage Section (Store Mode) ......... 4-21
4-23. Store Function ASM Chart . . . . . . . . . . . . . . .4-22
4-24. Equivalent Circuit (State l) . . . . . . . . . . . . . . .4-23
4-25. Equivalent Circuit (State 3) . . . . . . . . . . . . . . .4-24
4-26. Store Button Released . . . . . . . . . . . . . . . . . .4-24
5-1. 10 kHz CAL Signal . . . . . . . . . . . . . . . . . . . . 5-3
5-2. Proper Hookup . . . . . . . . . . . . . . . . . . . . . . ' 5-5
5-3. Spurious Response Test . . . . . . . . . . . . . . . . .5-11
5-4. Common Mode Rejection Test. ........... .5-15
5-5. Symmetry Adjustment . . . . . . . . . . . . . . . . . .5-21
5-6. Proper Hookup . . . . . . . . . . . . . . . . . . . . . . . 5-22
5-7. Adaptive Sweep Marker Adjustment ......... 5-26
6-1. Frequency Control Component Locator ...... 6-36
7-1. Mother Board (Al) Component
Location Diagram .. · . . . . . . . . . . . . . . . . . 7-10
7-2. Functional Block Diagram ............ 7-11/7-12
7-3. Amplitude Section Detailed
Block Diagram . . . . . . . . . . . . . . . . . 7-13/7-14
7-4. Input Assembly (A9) and Balanced Input
Assembly (Al8) Schematics and
Component Location Diagrams ...... 7-15/7-16
7-5. IF Filter Assembly (AS) Schematic and
Component Location Diagram. . . .... 7-1 7 /7-18
7-6. Detector Assembly (A4) Schematic and
Component Location Diagram ....... 7-19/7-20
7-7. Sweep Generator (A3) Schematic and
Component Location Diagram ....... 7-21 /7-22
7-8. Frequency Control Circuits
(Al4, AlS, Al6) Schematic and
Component Location Diagrams ...... 7-23/7-24
7-9. VTO and Tracking Oscillator Assembly
(A2) Schematic and Component
Location Diagram . . . . . . . . . . . . . . . . . . . 7-25
7-10. Digital Storage Assembly (A 7)
Schematic and Component Location
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 7-27
7-11. Control Assembly (A8), Deflection Amplifier
(A13) and High Voltage Power Supply
(All) Schematics and Component
Location Diagrams . . . . . . . . . . . . . . 7-29/7-30
7-12. Low Voltage Power Supply (A6)
Schematic and Component Location
Diagram, and Power Input Module
(A20) Schematic . . . . . . . . . . . . . . . . 7-31/7-32
8-1. Balanced-Terminated Input
Configuration. . . . . . . . . . . . . . . . . . . . . . 8-1
8-2. Balanced Input Assembly . . . . . . . . . . . . . . _ . 8-1
8-3. Control Board Circuit Change . . . . . . . . . . . . . 8-3
8-4. Old Style Crystal. . . . . . . . . . . . . . . . . . . . . . 8-4
8-5. New Style on Modified A2 Board ........... 8-4
8-6. Control, Deflection, (A8, All, Al3) and
Schematics and Component Location
Diagrams . . . . . . . . . . . . . . . . . . . . . . . 8-7 /8-8
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