HP 654A - Page 5

Model 654A Table of Contents
TABLE OF CONTENTS
Section Page
I GENERAL INFORMATION 1-1
1-1. Description 1-1
1-7. Supplied Accessories 1-1
1-8. Recommended Accessories 1-1
1-9. Instrument and Manual Identification . . . 1-1
Section Page
II INSTALLATION 2-1
2-1. Inspection 2-1
2-3. Power Requirements 2-1
2-5. Grounding Requirements 2-1
2-8. Installation 2-1
2-10. Rack/Bench Installation 2-1
2-12. Repackaging For Shipment 2-1
Section Page
III OPERATING INSTRUCTIONS 3-1
3-1. Introduction 3-1
3-3. Controls, Indicators and Connectors 3-1
3-5. Turn- On Procedure 3-1
3-6. Output Meter Mechanical
Zero Adjustment 3-1
3-8. Primary Power Application 3-1
3-9. Operating Instructions 3-1
3-10. Operating Check 3-1
Section Page
IV THEORY OF OPERATION 4-1
4-1. General Description 4-1
4-6. Circuit Description 4-1
4-7. Oscillator Circuit 4-1
4-11. Buffer Amplifier 4-2
4-13. Counter Emitter Follower 4-2
4-15. Balanced Amplifier 4-2
4-19. Amplitude Control and
Automatic Leveling Control 4-3
4-29. Meter Circuits 44
4-33. Attenuators 44
4-35. Impedance Selector 44
4-37. Regulated Power Supplies 44
Section
V. MAINTENANCE
5-1. Introduction
5-4. Performance Checks
5-6. Frequency Checks
5-9. Amplitude Accuracy Checks
5-15. Level Flatness Checks
5-21. Meter Tracking Accuracy Check
5-22. Attenuator Accuracy Checks
5-28. Balance Checks
5-35. Distortion Check
Page
5-1
5-1
5-1
5- I
5-1
5-4
5-6
5-7
5-8
5-9
Section Page
5-36. Hum and Noise Check 5-10
5-37. Counter Output Check 5-11
5-38. Adjustment Procedure 5-12
5-40. Calibration Procedure 5-12
5-42. Turn- On 5-13
545. Power Supply Voltage Adjustments 5-13
5-46. Power Supply Regulation and
Ripple Check 5-13
5-47. Frequency Calibration Procedures . 5-13
5-52. Frequency Dial and 1 K
Range Adjustment 5-14
5-58. Meter Tracking and Amplitude
Control Adjustments 5-16
5-61. Amplitude Accuracy Calibration .. 5-17
5-62. Balance Adjustments 5-18
5-65. Level Flatness Adjustments 5-18
5-70. Troubleshooting the 654A 5-19
5-74. Front Panel Checks 5-19
5-75. Troubleshooting Tree 5-19
5-78. Troubleshooting the Power Supply. 5-22
5-81. Troubleshooting the Oscillator
Circuit 5-22
5-84. Troubleshooting the Buffer
Amplifier 5-23
5-86. Troubleshooting the Balanced
Amplifier 5-23
5-88. Trouble Isolation in the Remainder
of the Leveling Loop 5-23
5-91. Troubleshooting the Amplitude
Control Integrator 5-24
5-93. Troubleshooting the ALC Loop . 5-24
5-95. Troubleshooting the Meter
Differential Amplifier 5-24
5-97. Troubleshooting the Attenuators 5-24
5-99. Servicing Etched Circuit Boards 5-24
5-101. Servicing Rotary Switches 5-25
5-103. Servicing Tuner Assembly 5-25
Section Page
VI REPLACEABLE PARTS 6-1
6-1. Introduction 6-1
64. Ordering Information 6-1
6-6. Non- Listed Parts 6-1
Section Page
VII CIRCUIT DIAGRAMS 7-1
7-1. Introduction 7-1
APPENDICES
A. CODE LIST OF MANUFACTURERS
B. SALES AND SERVICE OFFICES
Ii Î