Figure 1-1. Digital Voltmeteter AN/GSM-64A.
Chapter 1. INTRODUCTION - TM-11-6625-2616-140007
Items Comprising an Operable Equipment - TM-11-6625-2616-140008
Chapter 2. INSTALLATION - TM-11-6625-2616-140009
Figure 2-1. Packaging of Digital Voltmeter AN/GSM-64A
Section II. INITIAL ADJUSTMENT OF EQUIPMENT
Chapter 3. OPERATION
Figure 3-1. Front and rear views of AN/GSM-64A
Section II. OPERATION UNDER USUAL CONDITIONS - TM-11-6625-2616-140015
Stopping Procedure - TM-11-6625-2616-140016
Chapter 4. OPERATOR AND ORGANIZATIONAL MAINTENANCE - TM-11-6625-2616-140017
Operator's Weekly Preventive Maintenance Checks and Services Chart
Organizational Quarterly Preventive Maintenance Checks and Services Chart - TM-11-6625-2616-140019
Organizational Troubleshooting Chart
Organizational Repair
Chapter 5. FUNCTIONING
Figure 5-1. Signal conditioning circuits, simplified schematic diagram.
Figure 5-2. Digitizing circuits, simplified schematic diagram
Figure 5-3. Digitizing waveforms.
Figure 5-4. Timing circuits, simplified schematic diagram.
Digitizing Section Circuit Description
Figure 5-5. Integrator amplifier, simplified schematic diagram
Figure 5-6. Null amplifier, simplified schematic diagram
Reference Supply
Polarity Indicating Circuit
Figure 5-9. Auto/manual range circuitry, simplified schematic diagram.
Integrated Circuit Logic Diagrams
Figure 5-12. Type N7420A dual 4-input positive nand gate logic diagram
Figure 5-14. Type N7441B bed-to-decimal decoder/driver logic diagram
Figure 5-16. Type N7375B quadruple bistable latch logic diagram
Figure 5-18. Type 74192B synchronous 4-bit up/down counters logic diagram (part 1 of 2)
Figure 5-18. Type 74192B synchronous 4-bit up/down counters logic diagram (part 2 of 2)
Chapter 6. GENERAL SUPPORT TROUBLESHOOTING
Substitution.
Section Il. TROUBLESHOOTING DIGITAL VOLTMETER AN/GSM-64A
Figure 62. Signal conditioning assembly.
Power Supply Tests
Clock Frequency Test
Range Counter State Test
Chapter 7. REPAIRS AND ADJUSTMENTS
Figure 7-2. Lampbulb bracket removal and lamp bulb leads
Figure 7-3. Integrated circuit package.
Figure 7-4 Signal conditioning board removal.
Figure 7-5. Function switch assembly replacment.
Section II. ADJUSTMENTS
Zeroing the Readout.
Range Adjustments.
Chapter 8. GENERAL SUPPORT TESTING PROCEDURES - TM-11-6625-2616-140057
Figure 8-1. Signal conditioning assembly mounting
Procedure - TM-11-6625-2616-140059
DC Volts Performance Test
Procedure - TM-11-6625-2616-140061
DC Volts Ratio Performance Test
Procedure - TM-11-6625-2616-140063
Isolation Test
Procedure - TM-11-6625-2616-140065
Figure 8-5. Connections for isolation test No. 2
Chapter 9. SHIPMENT AND LIMITED STORAGE, AND DEMOLITION TO PREVENT ENEMY USE
Methods of Destruction - TM-11-6625-2616-140068
Figure 9-1. Color code marking for MIL-STD resistors.
Figure 9-2. Color code marking for MIL-STD capacitors. (Located in back of manual)
Appendix A. REFERENCES - TM-11-6625-2616-140071
Appendix B. MAINTENANCE ALLOCATION - TM-11-6625-2616-140073
Explanation of Format - TM-11-6625-2616-140074
Section II. Maintenance Allocation Chart - TM-11-6625-2616-140075
Table I. Tool and Test Equipment Requirements - TM-11-6625-2616-140076
Figure 9-2. Color code marking for MIL-STD capacitors.
Figure 9-3. Signal conditioning assembly, schematic diagrams
Figure 9-4. Main board assembly, schematic diagram.
TM-11-6625-2616-14 Digital Voltmeter AN/GSM-64A Manual
Chapter 1. INTRODUCTION - TM-11-6625-2616-140007
Items Comprising an Operable Equipment - TM-11-6625-2616-140008
Chapter 2. INSTALLATION - TM-11-6625-2616-140009
Figure 2-1. Packaging of Digital Voltmeter AN/GSM-64A
Section II. INITIAL ADJUSTMENT OF EQUIPMENT
Chapter 3. OPERATION
Figure 3-1. Front and rear views of AN/GSM-64A
Section II. OPERATION UNDER USUAL CONDITIONS - TM-11-6625-2616-140015
Stopping Procedure - TM-11-6625-2616-140016
Chapter 4. OPERATOR AND ORGANIZATIONAL MAINTENANCE - TM-11-6625-2616-140017
Operator's Weekly Preventive Maintenance Checks and Services Chart
Organizational Quarterly Preventive Maintenance Checks and Services Chart - TM-11-6625-2616-140019
Organizational Troubleshooting Chart
Organizational Repair
Chapter 5. FUNCTIONING
Figure 5-1. Signal conditioning circuits, simplified schematic diagram.
Figure 5-2. Digitizing circuits, simplified schematic diagram
Figure 5-3. Digitizing waveforms.
Figure 5-4. Timing circuits, simplified schematic diagram.
Digitizing Section Circuit Description
Figure 5-5. Integrator amplifier, simplified schematic diagram
Figure 5-6. Null amplifier, simplified schematic diagram
Reference Supply
Polarity Indicating Circuit
Figure 5-9. Auto/manual range circuitry, simplified schematic diagram.
Integrated Circuit Logic Diagrams
Figure 5-12. Type N7420A dual 4-input positive nand gate logic diagram
Figure 5-14. Type N7441B bed-to-decimal decoder/driver logic diagram
Figure 5-16. Type N7375B quadruple bistable latch logic diagram
Figure 5-18. Type 74192B synchronous 4-bit up/down counters logic diagram (part 1 of 2)
Figure 5-18. Type 74192B synchronous 4-bit up/down counters logic diagram (part 2 of 2)
Chapter 6. GENERAL SUPPORT TROUBLESHOOTING
Substitution.
Section Il. TROUBLESHOOTING DIGITAL VOLTMETER AN/GSM-64A
Figure 62. Signal conditioning assembly.
Power Supply Tests
Clock Frequency Test
Range Counter State Test
Chapter 7. REPAIRS AND ADJUSTMENTS
Figure 7-2. Lampbulb bracket removal and lamp bulb leads
Figure 7-3. Integrated circuit package.
Figure 7-4 Signal conditioning board removal.
Figure 7-5. Function switch assembly replacment.
Section II. ADJUSTMENTS
Zeroing the Readout.
Range Adjustments.
Chapter 8. GENERAL SUPPORT TESTING PROCEDURES - TM-11-6625-2616-140057
Figure 8-1. Signal conditioning assembly mounting
Procedure - TM-11-6625-2616-140059
DC Volts Performance Test
Procedure - TM-11-6625-2616-140061
DC Volts Ratio Performance Test
Procedure - TM-11-6625-2616-140063
Isolation Test
Procedure - TM-11-6625-2616-140065
Figure 8-5. Connections for isolation test No. 2
Chapter 9. SHIPMENT AND LIMITED STORAGE, AND DEMOLITION TO PREVENT ENEMY USE
Methods of Destruction - TM-11-6625-2616-140068
Figure 9-1. Color code marking for MIL-STD resistors.
Figure 9-2. Color code marking for MIL-STD capacitors. (Located in back of manual)
Appendix A. REFERENCES - TM-11-6625-2616-140071
Appendix B. MAINTENANCE ALLOCATION - TM-11-6625-2616-140073
Explanation of Format - TM-11-6625-2616-140074
Section II. Maintenance Allocation Chart - TM-11-6625-2616-140075
Table I. Tool and Test Equipment Requirements - TM-11-6625-2616-140076
Figure 9-2. Color code marking for MIL-STD capacitors.
Figure 9-3. Signal conditioning assembly, schematic diagrams
Figure 9-4. Main board assembly, schematic diagram.
TM-11-6625-2616-14 Digital Voltmeter AN/GSM-64A Manual
