Electronic document, no scan, very well readable.
1 INTRODUCTION AND SPECIFICATIONS 1-1
1-1. INTRODUCTION 1-1
1-2. UNPACKING THE SIGNAL
Generator 1-1
1-3. SAFETY 1-2
1-4.
Accessories 1-3
1-5. SIGNAL
Generator SPECIFICATIONS 1-3
2 THEORY OF OPERATION 2-1
2-1. INTRODUCTION 2-1
2-2. GENERAL DESCRIPTION 2-1
2-3. Front Panel Section 2-2
2-4. Upper/Lower Module Sections 2-2
2-5. Rear Panel Section 2-2
2-6. FUNCTIONAL DESCRIPTION 2-2
2-7. Frequency 2-2
2-8. Frequency Modulation 2-4
2-9. Phase Modulation 2-4
2-10. Output/Level Control 2-5
2-11. Amplitude Modulation 2-5
2-12. Pulse Modulation 2-5
2-13. Internal Modulation
Oscillator 2-6
2-14.
Power supply Description 2-6
2-15. DIGITAL CONTROLLER
Software DESCRIPTION 2-6
2-16. User
Interface 2-6
2-17. Calibration/Compensation Memory 2-7
2-18. Self-Test 2-7
2-19. Status Signals 2-7
3 CLOSED-CASE CALIBRATION 3-1
3-1. INTRODUCTION 3-1
3-2. Front Panel Calibration 3-2
3-3. Remote Calibration 3-2
3-4. Calibration Data 3-3
3-5. AM CALIBRATION 3-4
3-6. Front Panel AM Calibration Procedure 3-4
3-7. Remote AM Calibration Procedure 3-6
3-8. FM CALIBRATION 3-7
3-9. Front Panel FM Calibration Procedure 3-8
3-10. Remote FM Calibration 3-9
3-11. RF LEVEL CALIBRATION 3-10
3-12. Front Panel Level Calibration Procedure 3-11
3-13. Remote Level Calibration Procedure 3-13
3-14. REFERENCE
Oscillator CALIBRATION 3-14
3-15. Front Panel Reference
Oscillator Calibration Procedure
3-15
3-16. Remote Reference
Oscillator Calibration Procedure 3-16
4 PERFORMANCE TESTS 4-1
4-1. INTRODUCTION 4-1
4-2. TEST EQUIPMENT 4-1
4-3. POWER-ON TEST 4-4
4-4. FREQUENCY ACCURACY TEST 4-5
4-5. SYNTHESIS TEST 4-5
4-6. HIGH-LEVEL ACCURACY TEST 4-6
4-7. MID-LEVEL ACCURACY TEST 4-8
4-8. LOW-LEVEL ACCURACY TEST 4-9
4-9. ALTERNATE-LEVEL ACCURACY TEST 4-10
4-10. FLATNESS TEST 4-13
4-11. OUTPUT LEAKAGE TEST 4-14
4-12. HARMONIC AND LINE-RELATED SPURIOUS TEST 4-15
4-13. PHASE NOISE AND NON-HARMONIC SPURIOUS TESTS 4-16
4-14. MODULATION TESTS 4-17
4-15. VOLTAGE STANDING-WAVE RATIO (VSWR) TESTS 4-23
4-16. PULSE TESTS 4-24
5 ACCESS PROCEDURES 5-1
5-1. INTRODUCTION AND SAFETY 5-1
5-2. LOCATION OF MAJOR ASSEMBLIES 5-3
5-3. ACCESS INSTRUCTIONS 5-3
5-4. Removing the Front Panel Section 5-3
5-5. Removing the Rear Panel Section 5-3
5-6. Removing the A2 Coarse Loop PCA 5-4
5-7. Removing the A3 Sub-Synthesizer VCO PCA 5-4
5-8. Removing the A4 Sub-Synthesizer PCA 5-5
5-9. Removing the A5 Coarse Loop VCO PCA 5-5
5-10. Removing the A6 Mod
Oscillator PCA 5-5
5-11. Removing the A8 Output PCA 5-5
5-12. Removing the A9 Sum Loop VCO PCA 5-6
5-13. Removing the A10 Premodulator PCA 5-6
5-14. Removing the A11 Modulation Control PCA 5-6
5-15. Removing the A12 Sum Loop PCA 5-7
5-16. Removing the A13 Controller PCA 5-7
5-17. Removing the A14 FM PCA 5-8
5-18. Removing the A20 Attenuator/RPP Assembly 5-8
5-19. Removing the A22 Delay Cable Assembly 5-8
6 CIRCUIT DESCRIPTIONS, TROUBLESHOOTING, AND ALIGNMENT 6-1
6-1. INTRODUCTION 6-1
6-2. MODULE REPLACEMENT 6-4
6-3. A1 Display PCA 6-5
6-4. A2 Coarse Loop PCA 6-5
6-5. A3 Sub-Synthesizer PCA 6-5
6-6. A4 Sub-Synthesizer PCA 6-5
6-7. A5 Coarse Loop VCO PCA 6-5
6-8. A6 Mod
Oscillator PCA 6-5
6-9. A7 Relay Driver PCA 6-5
6-10. A8Output PCA 6-5
6-11. A9 Sum Loop VCO PCA 6-5
6-12. A10 Premodulator PCA 6-6
6-13. A11 Modulation Control PCA 6-6
6-14. A12 Sum Loop PCA 6-6
6-15. A13 Controller PCA 6-6
6-16. A14 FM Board PCA 6-6
6-17. A15
Power supply PCA 6-6
6-18. A19 Switch PCA 6-6
6-19. A20 Attenuator/RPP Assembly (A7, A21, A30) 6-6
6-20. A22 Delay Line Assembly (A25+A26+Delay Cable+Trim
Cable) ... 6-6
6-21. UPDATING COMPENSATION MEMORY WITH
MODULE EXCHANGE DATA 6-7
6-22. PARTS REPLACEMENT 6-8
6-23. SELF-TEST DESCRIPTION 6-8
6-24. Digital Tests 6-8
6-25. AM Tests 6-9
6-26. FM Tests 6-9
6-27. øM Tests 6-9
6-28. DCFM Test 6-10
6-29. Coarse Loop Tests 6-11
6-30. Sub-Synthesizer Tests 6-11
6-31. Sum Loop Tests 6-11
6-32. RF Output Tests 6-12
6-33. Pulse Modulator Tests 6-12
6-34.
Filter Tests 6-12
6-35. STATUS SIGNALS AND STATUS CODES 6-13
6-36.
Software DIAGNOSTIC FUNCTIONS 6-14
6-37. Digital Control Latch Test 6-14
6-38. Instrument Diagnostic State 6-14
6-39. Set Internal DACs 6-14
6-40. Display
Synthesizer Loop Frequencies 6-15
6A
Power supply 6A-1
6A-1.
Power supply BLOCK DIAGRAM 6A-1
6A-2.
Power supply CIRCUIT DESCRIPTION 6A-1
6A-3.
Power supply TROUBLESHOOTING 6A-4
6A-4. Troubleshooting Procedure 6A-4
6A-5.
Power supply ADJUSTMENT PROCEDURE 6A-5
6B DIGITAL CONTROLLER 6B-1
6B-1. DIGITAL CONTROLLER BLOCK DIAGRAM 6B-1
6B-2. DIGITAL CONTROLLER CIRCUIT DESCRIPTION (A13) 6B-1
6B-3. Microprocessor 6B-1
6B-4. Memory 6B-1
6B-5. Memory Control 6B-3
6B-6. Front Panel
Interface 6B-3
6B-7. IEEE-488
Interface 6B-3
6B-8. Attenuator Control
Interface 6B-3
6B-9. Module I/O 6B-3
6B-10. Status and Control 6B-4
6B-11. DIGITAL CONTROLLER TROUBLESHOOTING 6B-4
6B-12. RF Control 6B-4
6B-13. Microprocessor Kernel 6B-5
6B-14. Clock 6B-5
6B-15. Power-On Reset 6B-5
6B-16. Unused Microprocessor Inputs 6B-5
6B-17. Bus Error 6B-5
6B-18. Interrupts 6B-5
6B-19. Microprocessor Bus 6B-6
6B-20. Address Decoder 6B-6
6B-21. I/O Diagnostic Tests 6B-7
6B-22. CALIBRATION/COMPENSATION MEMORY 6B-8
6B-23. Calibration/Compensation Memory Status 6B-8
6B-24. Repairing Calibration/Compensation Memory Checksum
Errors .. 6B-9
6B-25. Calibration/Compensation Memory Origin Status 6B-9
6B-26. FRONT PANEL CIRCUIT DESCRIPTION 6B-9
6B-27. Display PCA 6B-10
6B-28. Data Communications 6B-10
6B-29. Display Filament Voltage 6B-10
6B-30. Bright-Digit Effect 6B-10
6B-31. Switchboard
Interface 6B-10
6B-32. Remote Footswitch 6B-10
6B-33. Edit Knob
Interface 6B-11
6B-34. Display Blanking 6B-11
6B-35. Operate/Standby Selection 6B-11
6B-36. FRONT PANEL TROUBLESHOOTING 6B-11
6B-37. Display and Controls 6B-11
6C FREQUENCY SYNTHESIS 6C-1
6C-1. FREQUENCY FAULT TREE 6C-1
6C-2. SUB-SYNTHESIZER BLOCK DIAGRAM 6C-1
6C-3. SUB-SYNTHESIZER CIRCUIT DESCRIPTION (A4) 6C-1
6C-4. SUB-SYNTHESIZER TROUBLESHOOTING 6C-9
6C-5. SUB-SYNTHESIZER ADJUSTMENTS 6C-13
6C-6. Steering DAC Full Scale Adjustment 6C-13
6C-7. Lower Clamp Adjustment, R99 6C-13
6C-8. Upper Clamp Adjustment, R98 6C-14
6C-9. SSB Mixer LO Drive Adjustment, R106 6C-14
6C-10. 10-kHz Notch Adjustment, L56 6C-15
6C-11. SUB-SYNTHESIZER VCO (A3) CIRCUIT DESCRIPTION 6C-16
6C-12. SUB-SYNTHESIZER VCO TROUBLESHOOTING 6C-16
6C-13. COARSE LOOP CIRCUIT DESCRIPTION (A2) 6C-17
6C-14. REFERENCE SECTION BLOCK DIAGRAM 6C-17
6C-15. COARSE LOOP BLOCK DIAGRAM 6C-20
6C-16. COARSE LOOP TROUBLESHOOTING 6C-22
6C-17. COARSE LOOP PCA ADJUSTMENTS 6C-26
6C-18. Discriminator Video
Amplifier Offset Adjustment, R102
6C-26
6C-19. Steering Gain Adjustment, R221 6C-28
6C-20. Acquisition
Oscillator Level Adjustment, R227 6C-28
6C-21. 40-MHz
Oscillator Adjustment, L601 6C-28
6C-22. 80-MHz
Filter Tuning, L612 and L613 6C-29
6C-23. 80-MHz Level Adjustment, R617 6C-30
6C-24. 2-MHz Notch Adjustment, L205 6C-30
6C-25. Alternate Reference Frequency Selection 6C-31
6C-26. COARSE LOOP VCO (A5) CIRCUIT DESCRIPTION 6C-31
6C-27. COARSE LOOP VCO TROUBLESHOOTING 6C-32
6C-28. SUM LOOP BLOCK DIAGRAM 6C-32
6C-29. SUM LOOP (A12) CIRCUIT DESCRIPTION 6C-34
6C-30. RF Section 6C-34
6C-31. Audio Section 6C-35
6C-32. SUM LOOP TROUBLESHOOTING 6C-38
6C-33. SUM LOOP ASSEMBLY ADJUSTMENTS 6C-41
6C-34. Steering Level Adjustment, R112 6C-41
6C-35. Buffer Gain Match Adjustment, R121 6C-42
6C-36. FM Null Adjustment, R116 6C-42
6C-37. Loop Gain Adjustment, R167 6C-43
6C-38. Acquisition
Oscillator Level Adjustment, R132 6C-44
6C-39. SUM LOOP VCO (A9) CIRCUIT DESCRIPTION 6C-44
6C-40. SUM LOOP VCO TROUBLESHOOTING 6C-45
6D RF LEVEL/AM 6D-1
6D-1. RF LEVEL FAULT TREE 6D-1
6D-2. RF LEVEL BLOCK DIAGRAM 6D-1
6D-3. RF LEVEL CIRCUIT DESCRIPTION 6D-3
6D-4. RF Path 6D-3
6D-5. Leveling Loop 6D-5
6D-6. Level Control 6D-6
6D-7. RF LEVEL TROUBLESHOOTING 6D-6
6D-8. Unleveled Condition 6D-8
6D-9. Output Assembly Test Point Signal Information 6D-9
6D-10. RF LEVEL ADJUSTMENTS 6D-10
6D-11. Mod Control PCA Level DAC Offset Adjustment, R23 6D-10
6D-12. Mod Control PCA AM DAC Offset Adjustment, R8 6D-11
6D-13. Mod Control PCA Detector Offset Adjustment, R28 6D-12
6D-14. Mod Control PCA AM Depth Adjustment, R10 6D-13
6D-15. Mod Control PCA RF Level Adjustment, R20 6D-14
6D-16. Mod Control PCA External Modulation Level
Indicator Adjustment, R71 6D-15
6D-17. Mod Control PCA Sum Steer Gain Adjustment 6D-15
6D-18. Output PCA Het Mixer Level Adjustment, R72 6D-16
6D-19. Output PCA Het Level Adjustment, R10 6D-17
6D-20. Premodulator PCA Bandwidth Adjustment, R51 and C7 6D-17
6D-21. Output PCA Q16 Bias Adjustment, R96 6D-18
6D-22. Output PCA Q9 Bias Adjustment, R1 6D-19
6D-23. Output PCA) Gain Flatness Adjustment, C201 6D-19
6D-24. FM Gain Adjustment, R82, on Mod Control PCA 6D-20
6D-25. FM Steer Gain, R101 on Mod Control PCA 6D-20
6D-26. FM INV Balance, R102 on Mod Control PCA 6D-20
6D-27. ATTENUATOR/REVERSE POWER PROTECTION (RPP) 6D-20
6D-28. ATTENUATOR RPP TROUBLESHOOTING 6D-21
6E FREQUENCY AND PHASE MODULATION 6E-1
6E-1. FM/øM FAULT TREE 6E-1
6E-2. FM/øM BLOCK DIAGRAM 6E-2
6E-3. CIRCUIT DESCRIPTION 6E-2
6E-4.
Oscillator Section 6E-2
6E-5. Divider Section 6E-4
6E-6. Phase Detectors, Loop Circuits, and Logic Section 6E-4
6E-7. Modulation Section 6E-7
6E-8. MODULATION CONTROL CIRCUIT DESCRIPTION 6E-10
6E-9. FM Input Voltage Processing 6E-10
6E-10. FM Steer Voltage Generation 6E-10
6E-11. FM Control Signals Generation 6E-10
6E-12. FM TROUBLE SHOOTING (A14) 6E-11
6E-13. Frequency Check 6E-11
6E-14. Modulation Check 6E-12
6E-15. Input Signals and Control Input Signals Checks 6E-12
6E-16. FM ADJUSTMENTS 6E-13
6E-17. Adjustments on the Modulation Control PCA (A11) 6E-13
6E-18. Alignment of FM PCA (A14) 6E-14
6F INTERNAL MODULATION
Oscillator 6F-1
6F-1. MODULATION
Oscillator BLOCK DIAGRAM 6F-1
6F-2. INTERNAL MODULATION
Oscillator
CIRCUIT DESCRIPTION 6F-1
6F-3. Direct Digital Synthesized Wave
Generator 6F-1
6F-4. Pulse
Generator 6F-3
6F-5. Signal Routing 6F-3
6F-6. MOD
Oscillator TROUBLESHOOTING AND
ADJUSTMENTS 6F-4
6F-7. Direct Digital
Synthesizer Troubleshooting 6F-4
6F-8. Pulse
Generator Troubleshooting 6F-5
7 LIST OF REPLACEABLE PARTS 7-1
TABLE OF CONTENTS 7-1
7-1. INTRODUCTION 7-2
7-2. HOW TO OBTAIN PARTS 7-2
7-3. SERVICE CENTERS 7-3
8 SCHEMATIC DIAGRAMS 8-1
TABLE OF CONTENTS 8-1
APPENDICES
A. INSTRUMENT PRESET STATE A-l
B. SPECIAL FUNCTION TABLE B-l
C. REJECTED ENTRY ERROR CODES C-l
D. OVERRANGE/UNCAL STATUS CODES D-l
E. SELF-TEST STATUS CODES E-l
F. COMPENSATION MEMORY STATUS CODES F-l
G. EXAMPLE CALIBRATION CONTROLLER PROGRAMS G-l
H. COMPENSATION PROCEDURES H-l
I. REAR PANEL AUX CONNECTOR PINOUT 1-1
Comments