Carrier Hybrid CF-7
Publisher: U.S. G.P.O.
Published: 1943
Place of publication: Washington, D.C., USA
Language: eng
Description: TM 11-2003 Carrier Hybrid CF-7, 1943-11-02
Table of contents: title: TABLE OF CONTENTS; title: Paragraph Page; title: SECTION I — DESCRIPTION; title: 1 Use 1; title: 2 Power supply 2; title: 3 Size and weight 2; title: 4 Major components 2; title: 5 External connections 4; title: 6 Switches and controls 4; title: 7 Protection 5; title: 8 Drawings 5; title: SECTION II — INSTALLATION AND OPERATION; title: 9 General 7; title: 10 Line requirements 7; title: 11 4-Wire extensions 9; title: 12 Selection of pairs 10; title: 13 Estimation of balance 11; title: 14 Repeater spacing 11; title: 15 2-Wire — 4-wire repeater 15; title: 16 Telegraph circuits 16; title: 17 Signaling circuit 17; title: 18 Installation 18; title: 19 Grounding arrangements 18; title: 20 Connections 18; title: 21 Initial adjustments 21; title: 22 Initial lineup 24; title: 23 Final network adjustments 27; title: 24 Final lineup 29; title: 25 Special lineup procedures 30; title: 26 Measurement of balance  — 21 test 31; title: 27 Measurement of singing margin  — 22 test 33; title: 28 System operation and maintenance 34; title: SECTION III — FUNCTIONING OF PARTS; title: 29 General description 35; title: 30 Composite set 35; title: 31 Telegraph filters 36; title: 32 Telegraph binding posts 36; title: 33 Hybrid arrangement 37; title: 34 Low-pass filter 38; title: 35 Balancing network 38; title: 36 Building-out condenser unit 39; title: 37 Protectors 40; title: 38 Transmission performance 40; title: 39 Explanation of 21 test 42; title: 40 Explanation of 22 tes 44; title: SECTION IV — MAINTENANCE; title: 41 General maintenance 46; title: 42 Location of trouble 46; title: SECTION V — SUPPLEMENTARY DATA; title: 43 Table of replaceable parts, Carrier Hybrid CF-7. 48; title: 44 List of manufacturers 61; title: LIST OF ILLUSTRATIONS; title: Figure Page; title: Frontispiece  — Carrier Hybrid CF-7 viii; title: 1 Carrier Hybrid CF-7, rear view 3; title: 2 Control panel 6; title: 3 Equalizer for nonloaded Wire W-143 15; title: 4 Schematic diagram of balancing network 39; title: 5 Arrangement of building-out condenser unit 41; title: 6 Illustration of 21 test 43; title: 7 Illustration of 22 test 44; title: 8 Block schematic diagram, illustrating use of Carrier Hybrid CF-7 63; title: 9 Carrier Hybrid CF-7, circuit label 65; title: 10 Simplified circuit schematic diagram 67; title: LIST OF TABLES; title: Table No. Page; title: I Approximate limiting lengths of entrance and intermediate cable for one repeater section 8; title: II Estimated maximum repeater section lengths, 4-pair openwire line 12; title: III Estimated maximum repeater section lengths, rubber-covered cables 13; title: IV Approximate attenuation of line facilities 14; title: V Connections between carrier equipment and Carrier Hybrid CF-7 19; title: VI Signaling and telegraph circuit connections 19; title: VII Nominal adjustment of balancing network 20; title: VIII Preliminary settings of miles dial on Telephone Terminal CF-1-A or Repeater CF-3-A 23; title: IX Settings for initial lineup 25; title: X Temporary connections for order circuit 29