Telephone Central Office Set TC-10
Publisher: U.S. G.P.O.
Published: 1944
Place of publication: Washington, D.C., USA
Language: eng
Description: TM 11-338 Telephone Central Office Set TC-10, 1944-07-28
Table of contents: title: TABLE OF CONTENTS; title: Paragraph Page; title: SECTION I. Description.; title: General 1 1; title: Component parts 2 1; title: Switchboard BD-110-( ) 3 7; title: Frame FM-19 4 10; title: Power equipment 5 11; title: Test and power distribution equipment 6 15; title: II. Installation and operation.; title: General 7 17; title: Setting up equipment 8 17; title: Connecting equipment 9 23; title: Preparation for use 10 28; title: Operation of power equipment 11 29; title: Switchboard operation 12 29; title: III. Functioning of parts.; title: General 13 33; title: Tracing line and trunk circuits 14 40; title: Line protection and cross-connection circuit 15 42; title: Line circuit, common battery 16 47; title: Line circuit, magneto 17 63; title: Trunk circuit, universal two-way to dial or manual offices 18 63; title: Universal cord circuit 19 66; title: Ringing circuit 20 69; title: Operator's telephone circuit 21 70; title: Auxiliary operator's telephone circuit 22 71; title: Conference circuit 23 75; title: Dial cord circuit 24 76; title: Cabinet BE-72 test circuits 25 76; title: Night alarm circuit 26 77; title: Fuse alarm circuit 27 79; title: No-voltage alarm circuit 28 79; title: Panel BD-90 power and ringing circuits 29 79; title: IV. Maintenance.; title: General 30 82; title: Testing with Cabinet BE-72 31 83; title: Moistureproofing and fungiproofing 32 92; title: Wiring diagrams 33 98; title: Storage batteries 34 98; title: Switchboard plugs, cleaning 35 99; title: Switchboard cord repairs 36 99; title: Cleaning contacts 37 100; title: Cleaning relay parts 38 101; title: Drop and relay adjustments 39 101; title: Circuit requirements of relays 40 105; title: Telering 20-cycle power ringer 41 111; title: Battery-driven ringing interrupter 42 111; title: V. Supplementary data.; title: Packing for transportation 43 112; title: Maintenance parts lists 44 116; title: LIST OF ILLUSTRATIONS; title: Fig. No. Title Page; title: 1 Telephone Central Office Set TC-10, assembled x; title: 2 Switchboard BD-110-( ), front view 4; title: 3 Switchboard BD-110-( ), rear view, terminal panel raised 5; title: 4 Switchboard BD-110-( ), packed for transportation 6; title: 5 Line side of main distributing frame consisting of three Frames FM-19 bolted together 8; title: 6 Switchboard side of main distributing frame consisting of three Frames FM-19 bolted together 9; title: 7 Rectifier RA-36-J mounted on Rack FM-30, front view 10; title: 8 Panel BD-90, front view 11; title: 9 Panel BD-90, rear view 12; title: 10 Cabinet BE-75 mounted on Rack FM-30 13; title: 11 Cabinet BE-72, front view 14; title: 12 Test Cabinet BE-70-( ), front view 16; title: 13 Cording diagram for Telephone Central Office Set TC-10 18; title: 14 Suggested floor plan for Telephone Central Office Set TC-10 in one room 19; title: 15 Suggested floor plan for Telephone Central Office Set TC-10 in two rooms 20; title: 16 Distributing frame, assembly diagram 21; title: 17 Switchboard BD-110-( ), rear view 22; title: 18 Cabinet BE-72, showing method of connecting spade terminals to binding posts 24; title: 19 Three-conductor plug and jack 33; title: 20 Switchboard BD- 110-( ), front equipment 34; title: 21 Switchboard BD-110-( ), keyshelf equipment 35; title: 22 Multiple scheme, one- and two-position installations, Switchboard BD-110-( ) 37; title: 23 Multiple scheme, three-position installations, Switchboard BD-110— ( ) 38; title: 24 Switchboard BD-110-( ), cabling scheme for one- and two-position installations 39; title: 25 Switchboard BD-110-( ), cabling scheme for three-position installations 41; title: 26 Switchboard BD-110-( ), cabling scheme for four-, five-, and six-position installations 42; title: 27 Switchboard BD-110-( ), answering jack and multiple umbering; one-, two-, and three-position installations 43; title: 28 Switchboard BD-110-( ), answering jack and multiple numbering; four-, five-, and six-position installations 44; title: 29 Switchboard BD-110-( ), binding posts on terminal panel 45; title: 30 Multiple cable terminal strips at top of Switchboard BD-110-( ) 46; title: 31 Switchboard BD-110-( ), spade terminal strip desig- nations 47; title: 32 Frame FM-19, line circuit, wiring diagram 48; title: 33 Common-battery line circuit, wiring diagram, Switchboard BD-110-( ) 49; title: 34 Magneto line circuit, wiring diagram, Switchboard BD-110-( ) 62; title: 35 Universal trunk circuit, schematic diagram, Switchboard BD-110-( ) 64; title: 36 Universal cord circuit, schematic diagram, Switchboard BD-110-( ) 67; title: 37 Ringing circuit, schematic diagram, Switchboard BD-110-( ) 70; title: 38 Operator's telephone circuit, schematic diagram, Switch- board BD-110-( ) 72; title: 39 Grouping circuit, functional diagram, Switchboard BD-110-( ) 73; title: 40 Auxiliary operator's telephone circuit, wiring diagram, Switchboard BD-110-( ) 74; title: 41 Conference circuit, wiring diagram, Switchboard BD-110-( ) 75; title: 42 Switchboard BD-110-( ), dial cord circuit, schematic diagram 76; title: 43 Night alarm circuit, schematic diagram, Panel BD-90 78; title: 44 Fuse alarm circuit, schematic diagram, Panel BD-90 79; title: 45 No- voltage alarm circuit, schematic diagram, Panel BD-90. 79; title: 46 Panel BD-90, power and ringing supply circuits, schematic diagram 80; title: 47 Cabinet BE-72, voltmeter test circuit, schematic diagram 83; title: 48 Cabinet BE-72, switchboard test circuit, schematic diagram 86; title: 49 Test of contacts of common-battery line jacks, Switchboard BD-110-( ), functional diagram 88; title: 50 Test of magneto line circuit drops, Switchboard BD-110-( ), functional diagram 88; title: 51 Test of supervisory relay, Switchboard BD-110-( ), functional diagram 89; title: 52 Test of sleeve and supervisory relays, Switchboard BD-110-( ), functional diagram 90; title: 53 Operate test of sleeve relay, Switchboard BD-110-( ), functional diagram 90; title: 54 Ringing key test, Switchboard BD-110-( ), functional diagram 91; title: 55 Nonclick test of TALK-RING key, Switchboard BD-110-( ), functional diagram 91; title: 56 Method of adjusting spring tang of an E- or R-type relay 102; title: 57 Front contact make adjustment of a G-type relay 103; title: 58 Racks FM-34, FM-35, FM-36, and FM-37 in Case CS-61 112; title: 59 Frames FM-19 in Cases CS-59, covers removed, showing two stages of packing 113; title: 60 Cabinet BE-72 in Case CS-66, cover removed 114; title: 61 Switchboard BD-110-( ), front panel removed, showing cords secured for transportation 115; title: 62 Power distribution circuits, wiring diagram, Cabinet BE-72 138; title: 63 Voltmeter test circuit, wiring diagram, Cabinet BE-72 139; title: 64 Switchboard test circuit, wiring diagram, Cabinet BE-72 140; title: 65 Cabinet BE-75, wiring diagram 141; title: 66 No-voltage alarm circuit, wiring diagram, Panel BD-90 142; title: 67 Power and ringing circuits and interrupter contact protection circuit, wiring diagram, Panel BD-90 143; title: 68 Night alarm and fuse alarm circuits, wiring diagram, Panel BD-90 144; title: 69 Power cable connector circuit, wiring diagram, Switchboard BD-110-( ) 145; title: 70 Dial cord circuit, wiring diagram, Switchboard BD-110-( ) 146; title: 71 Power and heating circuit, wiring diagram, Switchboard BD-110-( ) 146; title: 72 Universal cord circuit and ringing circuit, wiring diagram, Switchboard BD-110-( ) 147; title: 73 Operator's telephone circuit, wiring diagram, Switchboard BD-110-( ) 148; title: 74 Universal two-way trunk circuit, wiring diagram, Switchboard BD-110-( ) 149; title: DESTRUCTION NOTICE; title: WHY — To prevent the enemy from using or salvaging this equipment for his benefit.; title: WHEN — When ordered by your commander.; title: HOW — 1 Smash — Use sledges, axes, handaxes, pickaxes, hammers, crowbars, heavy tools.; title: 2. Cut — Use axes, handaxes, machetes.; title: 3. Burn — Use gasoline, kerosene, oil, flame throwers, incendiary grenades.; title: 4. Explosives — Use firearms, grenades, TNT.; title: 5. Disposal — Bury in slit trenches, fox holes, other holes. Throw in streams. Scatter.; title: USE ANYTHING IMMEDIATELY AVAILABLE FOR DESTRUCTION OF THIS EQUIPMENT.; title: WHAT — 1 Smash — Jack field, switchboard plugs, storage battery, battery charger, power generator, ringing generators, keys, relays, meters, receptacles, dial, etc.; title: 2. Cut — All cables and wires.; title: 3. Burn — Wood cases and cabinets, cables, wire, technical manual, blueprints.; title: 4. Bury or scatter — Any or all of the above pieces after breaking.