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Extra resources for 315-1975 R1993) IEEE Graphic Symbols for Electrical and Electronic Diagrams Including Reference Designation Letters) Bound with its Supplement 315-1986 R1993

Example text

1A: If essential to show type of shielding add E for electric and M for magnetic shielding. When used for other shielding, a note should so indicate. 1 General These are long dashes. 18 Copyright The Institute of Electrical and Electronics Engineers, Inc. 12A — If it is essential to denote on a system-type interconnection wiring diagram that the connector or cable is furnished with the equipment by the equipment manufacturer the following symbol shall be used. 20 inch diameter circle. 13A: The longer line represents the positive pole.

1 Plane polarization 29 Copyright © 1975 IEEE All Rights Reserved Copyright The Institute of Electrical and Electronics Engineers, Inc. 6 Qualifying symbols to indicate direction of radiation Use only if essential to indicate special property of an antenna. 1) may be used to supplement a qualifying symbol. 6B — Antenna rotation can be accomplished by electromechanical or electronic means. 2 Adjustable in azimuth 30 Copyright The Institute of Electrical and Electronics Engineers, Inc. 3 Antenna with direction of radiation fixed in azimuth, horizontal polarization 31 Copyright © 1975 IEEE All Rights Reserved Copyright The Institute of Electrical and Electronics Engineers, Inc.

3 Application: gas-filled envelope The gas-recognition symbol (dot) may be located as convenient. 4 Application: liquid-filled envelope The liquid-recognition symbol may be located as convenient. 11 Shield Shielding Normally used for electric or magnetic shielding. 1A: If essential to show type of shielding add E for electric and M for magnetic shielding. When used for other shielding, a note should so indicate. 1 General These are long dashes. 18 Copyright The Institute of Electrical and Electronics Engineers, Inc.

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