levels of keying

  n.
   pl. the divisions of a master key system into hierarchies of access, as shown in the following tables. Note: the standard key coding system has been expanded to include key symbols for systems of more than four levels of keying.
   TWO LEVEL SYSTEM
   
   THREE LEVEL SYSTEM
   
   FOUR LEVEL SYSTEM
   
   FIVE LEVEL SYSTEM
   
   SIX LEVEL SYSTEM
   

Locksmith dictionary . 2014.

Look at other dictionaries:

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  • Amplitude-shift keying — (ASK) is a form of modulation that represents digital data as variations in the amplitude of a carrier wave.The amplitude of an analog carrier signal varies in accordance with the bit stream (modulating signal), keeping frequency and phase… …   Wikipedia

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  • master key system —   n.    1. any keying arrangement which has two or more levels of keying    2. a keying arrangement which has exactly two levels of keying …   Locksmith dictionary

  • modified key coding system —   n.    a modification of the standard key coding system, in which the TMK of a system with three or more levels of keying has a single letter name, and keys at lower levels are named following SKCS conventions …   Locksmith dictionary

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  • grand master key system —   n.    a master key system which has exactly three levels of keying …   Locksmith dictionary

  • great grand master key system —   n.    a master key system which has exactly four levels of keying …   Locksmith dictionary

  • great great grand master key system —   n.    a master key system which has five or more levels of keying …   Locksmith dictionary

  • sub-master key —   n.    the master key level immediately below the master key in a system of six or more levels of keying …   Locksmith dictionary

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