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Standby


 
  • In telecommunication, the term standby has the following meanings:
  • In computer and communications systems operations, pertaining to a power-saving condition or status of operation of equipment that is ready for use but not in use.

    • Note: An example of a standby condition is a radio station operating condition in which the operator can receive but is not transmitting.

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  • Pertaining to a dormant operating condition or state of a system or equipment that permits complete resumption of operation in a stable state within a short time.
  • Pertaining to spare equipment that is placed in operation only when other, in-use equipment becomes inoperative.

    • Note: Standby equipment is usually classified as (a) hot standby equipment, which is warmed up, i.e., powered and ready for immediate service, and which may be switched into service automatically upon detection of a failure in the regular equipment, or (b) cold standby equipment, which is turned off or not connected to a primary power source, and which must be placed into service manually.

    Related Topics:
    Detection - Failure - Primary power

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    Source: from Federal Standard 1037C

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  • In the commericial aviation industry, standby refers to a list in which passengers may request to be placed on to request an earlier or more convenient flight.
  • In theatre, a standby is an actor or performer who will appear in a particular role if the regular performer is not present – similar to an understudy. However, unlike understudies, standbys will only perform when they are needed to cover a role, and do not regularly appear in a show.
 
 

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