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Summary of Contents for Western Electric 22E
- Page 1 Wesrern Electric 22E SPEECH INPUT EQUIPMENT IN S T RUCT I O N B U L L E T I N N O. I S S UE N O . 1175,...
- Page 2 �siern Electric 22E SPEECH INPUT EQUIPMENT Research and design by Bell Telephone Laboratories INSTRUCTION BULLETIN 1175, ISSUE...
- Page 3 INDEX GENERAL DESCRIPTION ES-675710 Amplifier Control Unit . a. Input and Mixing Circuits . Output Circuits c. Volume Indicator . d. Monitoring 2. ES-610199 AC Power Unit 3. B-147071 Set of Accessories for Battery Operation . INSTALLATION . 1. Equipment Furnished a.
- Page 4 INDEX (Cont'd) e. Ground . Battery Cable . g. AC Connection h. Power Switches Plate Current Check Operation . a. Gain Settings b. Output Level c. Precautions MAINTENANCE.
- Page 5 Cover. (H) 24A Tronsmiller Mounting. (I) I IA Trans· {A) Amplifier-Control Unit Cerrying Cese with Cover. mitter Allochment. (J) 442A Jacl and 712A Adapter. {8) Amplifier-Control Unit. (CJ Power Supply Carry· ing Case with Cover. (0) Ballery compartment with (K) Microphone plugs (Cannon plugs P3-CG-12). (L) cord •nd plug.
- Page 6 Western Electric 22E SPEECH INPUT EQUIPMENT Typical Characteristics Maximum Gain Approximately 90 db. Frequency Response Uniform over the range from 35 to 10,000 cycles. See curve, Figure 1. Operates From 30 ohm microphones or other 30 ohm circuits of com...
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Page 9: Installation
The output level (deflection to the 0 vu or 630 Type are recommended for making con 100 mark) to be indicated by the meter is nections between the 22E Amplifier and the set by means of the volume indicator range monitoring amplifier. - Page 10 However, no cordage or wall plug Assembly is furnished. Amplifier Control Unit Batteries 1. Remove the cover of the Amplifier-con trol Unit of the 22E Speech Input Batteries as listed above are not furnished and must be ordered separately. Equipment by loosening the four thumb...
- Page 11 Full front panel, and pulling the panel for instructions for battery operation are fur ward. nished with the 22E Speech Input Equipment when ordered for battery operation. 2. The Meter (KS-8208...
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Page 12: Operation
The from a location where multiple extensions 22E Speech Input Equipment will deliver of the program line are used, the line keys levels at +18 vu without serious distortion. - Page 13 Scratches and chips in the finish may and accessories should be checked. Trouble be repaired by the application of gray enam in the 22E Speech Input Equipment can be el per D-97106 to the injured areas. This traced by means of the schematic diagrams,...
- Page 14 TYPICAL CUSTOMER'S APPARATUS LIST Apparatus Desig. 230A Condensers, 0:4 microfarad Cl, C2 314B Condenser, 0.1 microfarad, per ESA-675815 C4, C5 230A Condensers, 0.4 microfarad 439A Condenser, 2.0 microfarads ± Cornell-Dubilier Corp. Type 4 Condenser .03 microfarad lO'}'r Sprague type DEW or Aerovox type GEP Condensers, 50 microfarads, DC working voltage 25 maximum 141A Condenser, -LO microfarad ClO, Cll...
- Page 15 Hubbell 6630 Body ES0-610217-2 Cord Assembly Fo1· Battery Suppl.y Set of accessories for battery operation per BL-147071 All appa?·atus is Western Electric unl. e ss otherwise specified. · Jn�1ruc1ion Dulle-tin 1115. bsue I I ·C"·•�·.l< Prinh."4 1 U. S. A...
- Page 16 � 1000 5000 1000 0 fRlQU(NC{ CYCLES SlCO .. D Fig. 1-Frequency Response Curve 1. 8 • OUTPUT LEVEL • 67891 20000 10000 1000 FREQUENCY IN CYCLES l'ER SECOND Fig. 2-Distortion-Frequency Curve...
- Page 17 RD-WH 285N 0.1 MF 0.4MF RD·WH BL·WH 0.24MEG 0.03MF 17SB LINE NO. I 3300 W 2400'"" 0.4MF 0.4MF 50MF 0.4MF LINE NO. 2 620 W 620W 62 QW QOFF O.OIMF 50MF 300 QQW TEL. 50MF O.IMEG 24QO W 3000W 51000""' GND.
- Page 18 "' fl'J � 03.t � --- · Fig. 4-Wiring Diagram...
- Page 19 PLATE FI L. llOV.A.C. CORD ANO PLUG TO AMPLIFIER CONTROL UNIT S-Power Unit Schematic...
- Page 20 · · • � . . · r-�-1 C1�� I· · \.._____ liLJ: ----, \..W'til GROUND Fig. 6-Power Unit Wiring Diagn...
- Page 21 wesrern Electric - QUALITY COUNTS -...
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