Chapter 1 FUNCTIONING
Section II. BLOCK DIAGRAM FUNCTIONING
Chapter 2 TROUBLESHOOTING
Voltage measurements.
Localizing Troubles
Troubleshooting Chart - TM-11-6625-586-450013
Transistor Voltage Checks
Figure 2-1. Generator, Signal SG-297/U, top view
Figure 2-2. Generator, Signal SG-297/U, bottom view
Figure 2-3. Generator, Signal SG-297/U, rear view
Figure 2-4. Generator, Signal SG-297/U, right side view
Figure 2-5. Generator, Signal SG-297/U, left side view
Figure 2-6. Audio board
Figure 2-7. Wein bridge board
Figure 2-8. Power supply and miscellaneous components board A5
Figure 2-9. RF assembly A1, side view
Figure 2-10. RF assembly A1, top view
Figure 2-11. Board A1A1
Figure 2-12. Board A1A2A1
Figure 213. IF assembly A2, side view
Figure 2-14. IF assembly A2, bottom view, cover and board A2A1 removed
Figure 2-15. Board A2A1
Figure 2-16. IF attenuator assembly A3, cover removed
Figure 2-17. IF attenuator assembly A3, component assemblies
Figure 2-18. RF attenuator assembly A4, cover removed
Figure 2-19. RF attenuator assembly A4, component assemblies
Figure 2-20. Harmonic generator assembly A6
Figure 2-21. Board A6A1
Chaptre 3 REPAIRS AND ALIGNMENT
Power Supply Voltage Adjustment
IF Output Frequency Accuracy
Chapter 4 GENERAL SUPPORT TESTING PROCEDURES
Modification Work Order
Operational Test
RF Frequency Range and Dial Accuracy Test
Resetability Test
Carrier Frequency Shift Test
Output Frequency Accuracy Test - TM-11-6625-586-450046
Output Frequency Accuracy Test - TM-11-6625-586-450047
Figure 4-1. RF frequency range, dial accuracy, resettability, and carrier
Chapter 5 DEPOT MAINTENANCE
Table 5-1. Low RF Output Voltage Range and Accuracy
Figure 5-1. Low RF voltage range and accuracy test setup
Table 5-2. Voltage/dbm Convection
Computation
RF Output Impedance
External Modulation Input Impedance
Figure 5-2. IF output impedance, test setup
Table 5-5. Internal Modulation Deviation and Distortion Check
Table 5-5. Internal Modulation Deviation and Distortion Check --Continued.
Table 5-5. Internal Modulation Deviation and Distortion Check -Continued.
Figure 5-5. Internal modulation, test setup
Alignment of IF Assembly
Figure 5-6. Nomograph for modified IF assembly operation.
Chapter 6 DEPOT INSPECTION STANDARDS
Internal Modulation
Figure 6-2. High RF voltage range and accuracy, test connections
Table 6-3. Internal Modulation Deviation and Distortion Check -Continued
Table 6-3. Internal Modulation Deviation and Distortion Check Continued
Figure 6-3. External modulution check, test connections
Table 64. External Modulation, Deviation and Distortion Check -Continued
Table 6-4. External Modulation, Deviation and Distortion Check -Continual.
Table 6-4. External Modulation, Deviation and Distortion Check --Continued
Figure 6-4. If Output level, test connections
Figure 6-5. MIL-STD resistor color-code markings
List - TM-11-6625-586-450076
List - TM-11-6625-586-450077
Appendix A REFERENCES - TM-11-6625-586-450078
INDEX - TM-11-6625-586-450080
Figure 6-6. MIL-STD capacitor color-code markings
Figure 6-8(1). Generator, Signal SG-297/U, schematic daigram (part 1 of 4)
Figure 6-8(2). Generator, Signal SG-297/U, schematic daigram (part 2 of 4) - TM-11-6625-586-450083
Figure 6-8(2). Generator, Signal SG-297/U, schematic daigram (part 2 of 4) - TM-11-6625-586-450084
Figure 6-8(3). Generator, Signal SG-297/U, schematic daigram (part 3 of 4)
Figure 6-8(4). Generator, Signal SG-297/U, schematic daigram (part 4 of 4)
Figure 6-9(2). Gear train, exploded view (part 2 of 2)
TM-11-6625-586-45 Generator Signal AN/URM-103 Manual
Section II. BLOCK DIAGRAM FUNCTIONING
Chapter 2 TROUBLESHOOTING
Voltage measurements.
Localizing Troubles
Troubleshooting Chart - TM-11-6625-586-450013
Transistor Voltage Checks
Figure 2-1. Generator, Signal SG-297/U, top view
Figure 2-2. Generator, Signal SG-297/U, bottom view
Figure 2-3. Generator, Signal SG-297/U, rear view
Figure 2-4. Generator, Signal SG-297/U, right side view
Figure 2-5. Generator, Signal SG-297/U, left side view
Figure 2-6. Audio board
Figure 2-7. Wein bridge board
Figure 2-8. Power supply and miscellaneous components board A5
Figure 2-9. RF assembly A1, side view
Figure 2-10. RF assembly A1, top view
Figure 2-11. Board A1A1
Figure 2-12. Board A1A2A1
Figure 213. IF assembly A2, side view
Figure 2-14. IF assembly A2, bottom view, cover and board A2A1 removed
Figure 2-15. Board A2A1
Figure 2-16. IF attenuator assembly A3, cover removed
Figure 2-17. IF attenuator assembly A3, component assemblies
Figure 2-18. RF attenuator assembly A4, cover removed
Figure 2-19. RF attenuator assembly A4, component assemblies
Figure 2-20. Harmonic generator assembly A6
Figure 2-21. Board A6A1
Chaptre 3 REPAIRS AND ALIGNMENT
Power Supply Voltage Adjustment
IF Output Frequency Accuracy
Chapter 4 GENERAL SUPPORT TESTING PROCEDURES
Modification Work Order
Operational Test
RF Frequency Range and Dial Accuracy Test
Resetability Test
Carrier Frequency Shift Test
Output Frequency Accuracy Test - TM-11-6625-586-450046
Output Frequency Accuracy Test - TM-11-6625-586-450047
Figure 4-1. RF frequency range, dial accuracy, resettability, and carrier
Chapter 5 DEPOT MAINTENANCE
Table 5-1. Low RF Output Voltage Range and Accuracy
Figure 5-1. Low RF voltage range and accuracy test setup
Table 5-2. Voltage/dbm Convection
Computation
RF Output Impedance
External Modulation Input Impedance
Figure 5-2. IF output impedance, test setup
Table 5-5. Internal Modulation Deviation and Distortion Check
Table 5-5. Internal Modulation Deviation and Distortion Check --Continued.
Table 5-5. Internal Modulation Deviation and Distortion Check -Continued.
Figure 5-5. Internal modulation, test setup
Alignment of IF Assembly
Figure 5-6. Nomograph for modified IF assembly operation.
Chapter 6 DEPOT INSPECTION STANDARDS
Internal Modulation
Figure 6-2. High RF voltage range and accuracy, test connections
Table 6-3. Internal Modulation Deviation and Distortion Check -Continued
Table 6-3. Internal Modulation Deviation and Distortion Check Continued
Figure 6-3. External modulution check, test connections
Table 64. External Modulation, Deviation and Distortion Check -Continued
Table 6-4. External Modulation, Deviation and Distortion Check -Continual.
Table 6-4. External Modulation, Deviation and Distortion Check --Continued
Figure 6-4. If Output level, test connections
Figure 6-5. MIL-STD resistor color-code markings
List - TM-11-6625-586-450076
List - TM-11-6625-586-450077
Appendix A REFERENCES - TM-11-6625-586-450078
INDEX - TM-11-6625-586-450080
Figure 6-6. MIL-STD capacitor color-code markings
Figure 6-8(1). Generator, Signal SG-297/U, schematic daigram (part 1 of 4)
Figure 6-8(2). Generator, Signal SG-297/U, schematic daigram (part 2 of 4) - TM-11-6625-586-450083
Figure 6-8(2). Generator, Signal SG-297/U, schematic daigram (part 2 of 4) - TM-11-6625-586-450084
Figure 6-8(3). Generator, Signal SG-297/U, schematic daigram (part 3 of 4)
Figure 6-8(4). Generator, Signal SG-297/U, schematic daigram (part 4 of 4)
Figure 6-9(2). Gear train, exploded view (part 2 of 2)
TM-11-6625-586-45 Generator Signal AN/URM-103 Manual
