Click here to make tpub.com your Home Page

Page Title: Home Page

• OPERATOR'S, ORGANIZATIONAL DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL VOLTMETER, DIGITAL AN/GSM-64C
• SAFETY STEPS
• WARNING
• OPERATOR'S, ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL is changed as follows
• LIST OF EFFECTIVE PAGES
• REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS
• TABLE OF CONTENTS
• TABLE OF CONTENTS-continued
• TABLE OF CONTENTS-continued
• LIST OF ILLUSTRATIONS
• LIST OF ILLUSTRATIONS-continued
• LIST OF TABLES
• Figure 1-1. Digital Voltmeter AN/GSM-64C
• CHAPTER 1. INTRODUCTION
• Section II. DESCRIPTION AND DATA
• Table 1-2. Ac Voltage Ranges*
• Table 1-3. Ac Voltage Accuracy
• Figrue 1-2. Outline Drawing, Portable Configuration
• Figure 1-3. Outline Drawing, Rack Mount Configuration
• CHAPTER 2. INSTALLATION
• Figure 2-1. AN/GSM-64C Packing Diagram
• Figure 2-2. Voltage Selection and Fused Receptacle (Rear Panel)
• Figure 2-3. Equipment Connections
• Figure 2-4 Rack Mount Installation
• CHAPTER 3. OPERATING INSTRUCTIONS
• Figure 3-1. Front Panel Controls and Instruments
• Table 3-1. Front Panel Controls and Instruments
• Table 3-1. Front Panel Controls and Instruments-continued
• Table 3-1. Front Panel Controls and Instruments-continued
• Figure 3-2. Rear Panel Controls and Instruments
• Table 3-2. Rear Panel Controls and Instruments
• Figure 3-3. Common Mode Signal Configuration
• Figure 3-4. Guarded Signal Configuration
• Section II. OPERATlON UNDER NORMAL CONDITIONS
• DC/DC Ratio Measurement
• Ac Voltage Measurement
• Ac+Dc Voltage Measurement
• Figure 3-6. Effect of DC Bias on the True Rms Voltage of a Square Wave
• Remote Programming
• Standby Operation
• Section III. PREPARATION FOR MOVEMENT
• CHAPTER 4. OPERATOR AND ORGANIZATIONAL MAINTENANCE
• Checks and Services
• Table 4-3. Organizational Preventive Maintenance Checks and Services
• Table 4-3. Organizational Preventive Maintenance Checks and Services-continued
• Section IV. TROUBLESHOOTING
• Functional Testing
• CHAPTER 5. FUNCTIONING OF EQUIPMENT
• Table 5-1. Ac Attenuation
• Analog to Digital (A/D) Converter
• Table 5-3. Ratio Ranging
• Section II. LOGIC CIRCUIT DESCRIPTION
• Figure 5-1. Range Selection Diagram
• Table 5-5. Range Selection Logic, A2-LJ67
• Up Range Detector, Minus Voltage
• Table 5-7. Autorange Logic, A2-U52
• Ratio Autoranging (A1 Assembly)
• Ratio Down Range Detector, Minus Input Signal
• Figure 5-2. Function Selection Diagram
• Timing Waveforms
• Figrue 5-3. Timing Waveforms
• CHAPTER 6. DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
• Figure 6-1. Location of Test Points
• Figure 6-2. Location of Adjustments
• Section II. TOOLS AND TEST EQUIPMENT
• Power Supply Checks
• Figure 6-4. Troubleshooting Flow Chart, Dc Voltage (Sheet 1 of 5)
• Figure 6-4. Troubleshooting Flow Chart, Dc Voltage (Sheet 2 of 5)
• Figure 6-4. Troubleshooting Flow Chart, Dc Voltage (Sheet 3 of 5)
• Figure 6-4. Troubleshooting Flow Chart, Dc Voltage (Sheet 4 of 5)
• Figure 6-4. Troubleshooting Flow Chart, Dc Voltage (Sheet 5 of 5)
• Figure 6-5. Troubleshooting Flow Chart, Ac Voltage (Sheet 1 of 2)
• Figure 6-5. Troubleshooting Flow Chart, Ac Voltage (Sheet 2 of 2)
• Figure 6-6. Troubleshooting Flow Chart, Dc/Dc Ratio (Sheet 1 of 2)
• Figure 6-6. Troubleshooting Flow Chart, Dc/Dc Ratio (Sheet 2 of 2)
• Figure 6-7. Troubleshooting Flow Chart, Auto Ranging (Sheet 1 of 4)
• Figure 6-7. Troubleshooting Flow Chart, Auto Ranging (Sheet 2 of 4)
• Figure 6-7. Troubleshooting Flow Chart, Auto Ranging (Sheet 3 of 4)
• Figure 6-7. Troubleshooting Flow Chart, Auto Ranging (Sheet 4 of 4)
• Figure 6-8. PCB, Digital Circuit Board
• Figure 6-9. PCB, Analog Circuit Board
• Section IV. MAINTENANCE OF THE VOLTMETER
• Figure 6-10. Digital Voltmeter AN/GSM-64C, Exploded View
• Figure 6-11. Rms Converter (A7) Singnal Input Connections
• Repair and Replacement
• Figure 6-12. Digital Voltmeter AN/GSM-64C, Front Panel Assembly
• Assembly
• Figure 6-13. Digital Voltmeter AN/GSM-64C, Bottom Cover Explosion
• Figure 6-14. Digital Voltmeter AN/GSM-64C, Rear Panel Assembly
• Section V. PERFORMANCE ASSURANCE TESTS
• Table 6-3. Voltmeter Dc Voltage Accuracy Checks
• Table 6-4. Voltmeter Dc Volts Autoranging Checks
• Table 6-5. Voltmeter Dc/dc Ratio Autoranging Checks
• Figure 6-17. Ac Voltage Accuracy Checks
• Section VI. FINAL ADJUSTMENTS
• Table 6-7. Minimum Specifications of Equipment Required-continued
• Dc Volts Accuracy Adjustments
• Figure 6-19. Location of Adjustments, Analog and Ratio Boards
• Zero Width Adjustment (A1-R107)
• Dc Ratio Accuracy Adjustments
• Figure 6-20. DC Ratio Calibration, Equipment Connections
• 100 V Full Range (A9-R10)/100 Vdc Common Mode (A9-R22)
• Figure 6-21. DC Ratio Calibration, Equipment Connections
• Figure 6-22. Location of Test Points
• Figure 6-23. DC Ratio Auto Range Detector Calibration
• Dc Volts Autoranging Adjustments
• Figure 6-25. DC Voltage Autoranging, Equipment Connections
• Dc/dc Ratio Autoranging Adjustments
• Ratio > +180000 Up Range Trip Point
• Figure 6-26. DC/DC Ratio Autoranging, Equipment Connections
• Figure 6-27. Location of Adjustments, True Rms Board
• Figure 6-28. RMS Converter Adjustment, Equipment Connections
• Overall Zero Adjustments (A7-R83, R94, R113, R144, R148)
• Overall Zero Adjustments (A7-R94, R113, R144, R148)
• Dc Turnover Adjustment (A7-R91)
• Dc Turnover Adjustment (A7-R91)
• Figure 6-29. Crest Factor Adjustment, Equipment Connections
• Rms Converter Dc Range Adjustments (A7-R40)
• Figure 6-30. DC Volts Accuracy, Equipment Connections
• Final Procedure
• Figure 6-31. AC Volts Accuracy Check, Equipment Connections
• APPENDIX A. REFERENCES
• APPENDIX B. MAINTENANCE ALLOCATION
• Column Entries
• Section II. MAINTENANCE ALLOCATION CHART FOR VOLTMETER AN/GSM-64C
• REMARKS
• Section III. TOOL AND TEST EQUIPMENT REQUIREMENTS FOR DIGITAL VOLTMETER, AN/GSM-64C
• Figure FO-1. Voltmeter Block Diagram
• Figure FO-2. Power Supply (A1,A2) Schematic Diagram
• Figure FO-3. Dc Volts Attenuator/Analog Switching (A1) Schematic Diagram
• Figure FO-4. A/D Converter and Active Filter (A1) Schematic Diagram
• Figure FO-5. Auto Range Up/Down Detectors (A1) Schematic Diagram
• Figure FO-6. Relay Switching Circuits (A1) Schematic Diagram
• Figure FO-7. Function Select Logic (A2) Schematic Diagram
• Figure FO-8. Manual Auto Remote Range Circuits (A2) Schematic Diagram
• Figure FO-9. Counter and Display Circuits (A2,A3) Schematic Diagram
• Figure FO-10. Parallel BCD Output (A2) Schematic Diagram
• Figure FO-11. Range Encoder/DP Encoder Circuits (A2) Schematic Diagram
• Figure FO-12. Rms Converter Preamplifier and Scaling (A7) Schematic Diagram
• Figure FO-13. True Rms Converter (A7) Schematic Diagram
• Figure FO-14. Dc Ratio Amplifier (A9) Schematic Diagram
• Instructions for sending an electronic 2028
• RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS
• Blank Page
• Blank Page
• Blank Page
• TM-11-6625-444-14-2
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS
• Blank Page
• DISTRIBUTION
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS
• RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• Blank Page
• DISTRIBUTION
• Blank Page
• Blank Page
• Blank Page