Test Sets 1-61-A, 1-61-B, And 1-61-C
Publisher: U.S. G.P.O.
Published: 1944
Place of publication: Washington, D.C., USA
Language: eng
Description: TM 11-346 Test Sets 1-61-A, 1-61-B, And 1-61-C, 1944-04-26
Table of contents: title: TABLE OF CONTENTS; title: Paragraph Page; title: SECTION I. Description.; title: General; title: List of components 1 1 2 1; title: II. Installation and operation. Installation of batteries 3 7; title: 1,000-cycle calibration of oscillator  4 7; title: 500-, 1,000-, and 2,500-cycle calibration of oscillator on Test Sets I-61-B and I-61-C 5 11; title: Calibration of receiving amplifier 6 11; title: Alignment of SEND LEVEL positions — 20 DBM and — 40 DBM on Test Sets I-61-B and I-61-C 7 13; title: Impedance adjustments on Test Set I-61-C 8 13; title: Panel binding posts and jacks 9 15; title: Connections for transmission tests 10 15; title: Testing repeating coils 11 18; title: Measurements 12 18; title: Calculation 13 21; title: Loss due to impedance mismatch 14 22; title: Accuracy of measurement 15 23; title: Use of external oscillator 16 25; title: Use of monitor winding in Test Set I-61-A 17 25; title: III. Functioning of parts.; title: Oscillator circuit 18 27; title: Meter circuit 19 27; title: Receiving amplifier circuit 20 29; title: IV. Maintenance.; title: Batteries 21 33; title: Tubes 22 33; title: Trouble shooting 23 34; title: Moistureproofing and fungiproofing Test Sets I-61-B and I-61-C 24 35; title: V. Supplementary data.; title: Characteristics of open wire at 1,000 cycles, 8-inch spacing 25 42; title: Characteristics of open wire at; title: 1,000 cycles, 12-inch spacing 26 43; title: Characteristics of cable (physical circuit) at 1,000 cycles 27 44; title: Characteristics of wire and cable at 1,000 cycles 28 45; title: Gain and impedance of repeaters at 1,000 cycles 29 46; title: Composite list of maintenance parts for Test Set I-61-A 30 50; title: Composite list of maintenance parts for Test Set I-61-B 31 51; title: Composite list of maintenance parts for Test Set I-61-C 32 53; title: Continuity test tables 34 58; title: LIST OF ILLUSTRATIONS; title: Fig. No. Title Page; title: 1. Test Set 1-61 -A, top view, case open 3; title: 2. Test Sets I-61-B and I-61-C, top view, case open . 4; title: 3. Test Sets I-61-B and I-61-C, assembled for operation 5; title: 4. Test Set 1-61- A, panel and chassis removed from case 6; title: 5. Test Set I-61-A, battery compartment 8; title: 6. Test Set I-61-B, panel and chassis removed from case 9; title: 7. Test Set I-61-B, top rear view of panel and chassis 10; title: 8. Test Set I-61-C, panel and chassis removed from case 12; title: 9. Test Set I-61-C, top rear view of panel and chassis 14; title: 10. Test Set I-61-A, schematic diagram for loop tests on telephone line 16; title: 11. Test Set I-61-A, schematic diagram for straightaway line measurements 16; title: 12. Test Set I-61-A, schematic diagram for measuring transmission through a switchboard line or trunk circuit 16; title: 13. Test Set I-61-A, schematic diagram for measuring transmission through a switchboard cord circuit 17; title: 14. Test Set I-61-A, schematic diagram for measuring gain of amplifier or repeater 18; title: 15. Test Set I-61-A, schematic diagram for testing repeating coils 19; title: 16. Test Sets I-61-B and I-61-C, simplified circuit operation 20; title: 17. Schematic diagram for loop test on telephone line 20; title: 18. Schematic diagram for straightaway line measurements, using one line 21; title: 19. Schematic diagram for straightaway line measurements, using two lines 21; title: 20. Schematic diagram for measuring transmission through a switchboard cord circuit 23; title: 21. Schematic diagram for measuring transmission through a switchboard line or trunk circuit 23; title: 22. Schematic diagram for measuring gain of amplifier or repeater 23; title: 23. Impedance mismatch curve 24; title: 24. Test Sets I-61-B and I-61-C, schematic diagram for testing repeating coils 26; title: 25. Frequency response curves 28; title: 26. Test Set I-61-A, actual point-to-point d-c voltages from set chassis 30; title: 27. Test Set I-61-B, actual point-to-point d-c voltages from set chassis 31; title: 28. Test Set I-61-C, actual point-to-point d-c voltages from set chassis 31; title: 29. Test Set I-61-A, schematic diagram 39; title: 30. Test Set I-61-B, schematic diagram 40; title: 31. Test Set I-61-C, schematic diagram 41; title: 32. Test Set I-61-A, wiring diagram of cabinet 47; title: 33. Test Set I-61-B, wiring diagram of cabinet and external battery connector 48; title: 34. Test Set I-61-C, wiring diagram of cabinet and external battery connector 49; title: 35. Test Set I-61-A, bottom rear view of chassis and panel 55; title: 36. Test Set I-61-B, bottom rear view of chassis and panel 56; title: 37. Test Set I-61-C, bottom rear view of chassis and panel 57; title: 38. Test Set I-61-A, wiring diagram 65; title: 39. Test Set I-61-B, wiring diagram 66; title: 40. Test Set I-61-C, wiring diagram 67; title: 41. Tube data 68; title: 42. R.M.A. color code for resistors 69