Description of the Improvements Made in Communication Circuits Over the Last Decade
Lesson 1. Communication Circuit Quality - SS033250008
Learning Event 2: Effect of Noise
Learning Event 3: Suppression of Manmade Noise
Learning Event 4: Improving the Signal-to-Noise Ratio
Techniques. - SS033250012
Radio receiver. - SS033250013
Peak limiters.
Learning Event 5: Interference
Learning Event 6: Distortion
Learning Event 7: Long-distance communications networks
Equalization.
Learning Event 9: Telegraph Signal Quality
Sources of telegraph distortion.
Data-transmission.
Serial-Parallel transmission.
Figure 1. Serial-parallel conversion, block diagram.
Learning Event 10: Communications control
Learning Event 12: Standards for Noise Measurement
Units of noise measurement.
Calculations.
Practice Exercise - SS033250028
Practice Exercise (cont) - SS033250029
Practice Exercise (cont) - SS033250030
Practice Exercise (cont) - SS033250031
Practice Exercise (cont) - SS033250032
Practice Exercise (cont) - SS033250033
Lesson 1. Communication Circuit Quality - SS033250034
Lesson 2. Concepts of Circuit Conditioning - SS033250035
Figure 2. Basic conditions for circuit conditioning, block diagram.
DCA circuit specifications.
Read and study.
Impedance matching.
Learning Event 4: Precautions in Tesing DC Circuits
Circuit categories.
Enclosure 1
24 tests listed in DCAC 300-175-9 Extract
Frequency response (insertion loss).
Frequency response (insertion loss). (Cont)
Listing of characteristics.
Learning Event 6: Expanded Circuit Parameters
Practice Exercise - SS033250048
Practice Exercise (Cont) - SS033250049
Practice Exercise (Cont) - SS033250050
Practice Exercise (Cont) - SS033250051
Practice Exercise (Cont) - SS033250052
Practice Exercise (Cont) - SS033250053
Lesson 2. Concepts of Circuit Conditioning - SS033250054
Lesson 3. Circuit Conditioning Test Sets
Learning Event 2: Corrective Devices
Figure 3. Transmission Impairment Measuring Set (TIMS) HP Model 4940A
Operational controls.
Digital display.
Measurement switch.
Transmitter controls.
15 push button switches
Noise filter.
Display key.
Nonlinear distortion.
Learning Event 4: TIMS Replacement
Figure 4. Telephone Test Set AN/USM-181.
Learning Event 6: Noise-Level-VU Measuring Set, Model TTS-37B.
Sensitivity.
Figure 5. Measuring set noise-level-VU, Model TTS-37B and TTS-37BR
Learning Event 7: Tektronix Oscilloscope AN/USM-281C.
Figure 6. Oscilloscope, AN/USM-281C.
Learning Event 8: Delay Equalizer Group, OA-880/FTC (UE-5).
Figure 7. Delay equalizer group, OA-880/FTC (UE-5)
Practice Exercise - SS033250075
Practice Exercise (Cont) - SS033250076
Practice Exercise (Cont) - SS033250077
Practice Exercise (Cont) - SS033250078
Lesson 3. Conditioning test Set
TM Extract Lesson 2
Table 1. DCS Technical Schedules for Government-Owned Circuits
Table 1. DCS Technical Schedules for Government-Owned Circuits (Cont) - SS033250082
Table 1. DCS Technical Schedules for Government-Owned Circuits (Cont) - SS033250083
Table 1. DCS Technical Schedules for Government-Owned Circuits (Cont) - SS033250084
Table 1. DCS Technical Schedules for Government-Owned Circuits (Cont) - SS033250085
Table 1. DCS Technical Schedules for Government-Owned Circuits (Cont) - SS033250086
Table 2. DCS Technical Schedules for Government-Owned Circuits (Circuit Parameters)
Table 2. DCS Technical Schedules for Government-Owned Circuits (Circuit Parameters) (Cont) - SS033250088
Table 2. DCS Technical Schedules for Government-Owned Circuits (Circuit Parameters) (Cont) - SS033250089
Table 2. DCS Technical Schedules for Government-Owned Circuits (Circuit Parameters) (Cont) - SS033250090
Table 2. DCS Technical Schedules for Government-Owned Circuits (Circuit Parameters) (Cont) - SS033250091
Table 3. DCS Technical Schedules for Government-Owned Circuits Group Bandwidth Circuits - FDM or Data Derived
Table 3. DCS Technical Schedules for Government-Owned Circuits Group Bandwidth Circuits - FDM or Data Derived (cont) - SS033250093
Table 3. DCS Technical Schedules for Government-Owned Circuits Group Bandwidth Circuits - FDM or Data Derived (cont) - SS033250094
Table 4. DCS Technical Schedules for Government-Owned Circuits Z1, Z2, Z3 Technical Schedules
Table 4. DCS Technical Schedules for Government-Owned Circuits Z1, Z2, Z3 Technical Schedules (Cont)
Footnotes to Table 4
Table 5. Cross-Reference Between Description of DCS Service Item Number and Applicable Circuit Parameter Code
TM Extracts Lesson 3 - SS033250099
Table 8-1. Controls, Jacks and Switches
Table 8-1. Controls, Jacks and Switches (Cont)
TM Extracts Lesson 3 - SS033250102
Figure - SS033250103
Figure 3-1. Oscilloscope controls, indicators, devices and connectors
Table 3-1. Controls, indicators, devices and connectors
Table 3-1. Controls, indicators, devices and connectors (Cont) - SS033250106
Table 3-1. Controls, indicators, devices and connectors (Cont) - SS033250107
Table 3-1. Controls, indicators, devices and connectors (Cont) - SS033250108
Practice Exercise/Solution Sheet
Practice Exercise/Solution Sheet (Cont) - SS033250111
Practice Exercise/Solution Sheet (Cont) - SS033250112
Practice Exercise/Solution Sheet (Cont) - SS033250113
Introduction to Circuit Conditioning
Lesson 1. Communication Circuit Quality - SS033250008
Learning Event 2: Effect of Noise
Learning Event 3: Suppression of Manmade Noise
Learning Event 4: Improving the Signal-to-Noise Ratio
Techniques. - SS033250012
Radio receiver. - SS033250013
Peak limiters.
Learning Event 5: Interference
Learning Event 6: Distortion
Learning Event 7: Long-distance communications networks
Equalization.
Learning Event 9: Telegraph Signal Quality
Sources of telegraph distortion.
Data-transmission.
Serial-Parallel transmission.
Figure 1. Serial-parallel conversion, block diagram.
Learning Event 10: Communications control
Learning Event 12: Standards for Noise Measurement
Units of noise measurement.
Calculations.
Practice Exercise - SS033250028
Practice Exercise (cont) - SS033250029
Practice Exercise (cont) - SS033250030
Practice Exercise (cont) - SS033250031
Practice Exercise (cont) - SS033250032
Practice Exercise (cont) - SS033250033
Lesson 1. Communication Circuit Quality - SS033250034
Lesson 2. Concepts of Circuit Conditioning - SS033250035
Figure 2. Basic conditions for circuit conditioning, block diagram.
DCA circuit specifications.
Read and study.
Impedance matching.
Learning Event 4: Precautions in Tesing DC Circuits
Circuit categories.
Enclosure 1
24 tests listed in DCAC 300-175-9 Extract
Frequency response (insertion loss).
Frequency response (insertion loss). (Cont)
Listing of characteristics.
Learning Event 6: Expanded Circuit Parameters
Practice Exercise - SS033250048
Practice Exercise (Cont) - SS033250049
Practice Exercise (Cont) - SS033250050
Practice Exercise (Cont) - SS033250051
Practice Exercise (Cont) - SS033250052
Practice Exercise (Cont) - SS033250053
Lesson 2. Concepts of Circuit Conditioning - SS033250054
Lesson 3. Circuit Conditioning Test Sets
Learning Event 2: Corrective Devices
Figure 3. Transmission Impairment Measuring Set (TIMS) HP Model 4940A
Operational controls.
Digital display.
Measurement switch.
Transmitter controls.
15 push button switches
Noise filter.
Display key.
Nonlinear distortion.
Learning Event 4: TIMS Replacement
Figure 4. Telephone Test Set AN/USM-181.
Learning Event 6: Noise-Level-VU Measuring Set, Model TTS-37B.
Sensitivity.
Figure 5. Measuring set noise-level-VU, Model TTS-37B and TTS-37BR
Learning Event 7: Tektronix Oscilloscope AN/USM-281C.
Figure 6. Oscilloscope, AN/USM-281C.
Learning Event 8: Delay Equalizer Group, OA-880/FTC (UE-5).
Figure 7. Delay equalizer group, OA-880/FTC (UE-5)
Practice Exercise - SS033250075
Practice Exercise (Cont) - SS033250076
Practice Exercise (Cont) - SS033250077
Practice Exercise (Cont) - SS033250078
Lesson 3. Conditioning test Set
TM Extract Lesson 2
Table 1. DCS Technical Schedules for Government-Owned Circuits
Table 1. DCS Technical Schedules for Government-Owned Circuits (Cont) - SS033250082
Table 1. DCS Technical Schedules for Government-Owned Circuits (Cont) - SS033250083
Table 1. DCS Technical Schedules for Government-Owned Circuits (Cont) - SS033250084
Table 1. DCS Technical Schedules for Government-Owned Circuits (Cont) - SS033250085
Table 1. DCS Technical Schedules for Government-Owned Circuits (Cont) - SS033250086
Table 2. DCS Technical Schedules for Government-Owned Circuits (Circuit Parameters)
Table 2. DCS Technical Schedules for Government-Owned Circuits (Circuit Parameters) (Cont) - SS033250088
Table 2. DCS Technical Schedules for Government-Owned Circuits (Circuit Parameters) (Cont) - SS033250089
Table 2. DCS Technical Schedules for Government-Owned Circuits (Circuit Parameters) (Cont) - SS033250090
Table 2. DCS Technical Schedules for Government-Owned Circuits (Circuit Parameters) (Cont) - SS033250091
Table 3. DCS Technical Schedules for Government-Owned Circuits Group Bandwidth Circuits - FDM or Data Derived
Table 3. DCS Technical Schedules for Government-Owned Circuits Group Bandwidth Circuits - FDM or Data Derived (cont) - SS033250093
Table 3. DCS Technical Schedules for Government-Owned Circuits Group Bandwidth Circuits - FDM or Data Derived (cont) - SS033250094
Table 4. DCS Technical Schedules for Government-Owned Circuits Z1, Z2, Z3 Technical Schedules
Table 4. DCS Technical Schedules for Government-Owned Circuits Z1, Z2, Z3 Technical Schedules (Cont)
Footnotes to Table 4
Table 5. Cross-Reference Between Description of DCS Service Item Number and Applicable Circuit Parameter Code
TM Extracts Lesson 3 - SS033250099
Table 8-1. Controls, Jacks and Switches
Table 8-1. Controls, Jacks and Switches (Cont)
TM Extracts Lesson 3 - SS033250102
Figure - SS033250103
Figure 3-1. Oscilloscope controls, indicators, devices and connectors
Table 3-1. Controls, indicators, devices and connectors
Table 3-1. Controls, indicators, devices and connectors (Cont) - SS033250106
Table 3-1. Controls, indicators, devices and connectors (Cont) - SS033250107
Table 3-1. Controls, indicators, devices and connectors (Cont) - SS033250108
Practice Exercise/Solution Sheet
Practice Exercise/Solution Sheet (Cont) - SS033250111
Practice Exercise/Solution Sheet (Cont) - SS033250112
Practice Exercise/Solution Sheet (Cont) - SS033250113
Introduction to Circuit Conditioning
