Automatic Ranging Frequency Counter.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent describes an automatic ranging frequency counter comprising a counting register which counts an unknown frequency signal for a measured amount of time. A frequency range detector indicates to a sequence controller and a decade time interval gate the degree of filling of the counter register at the end of said measured amount of time. The sequence controller and decade time interval gate control the commencement and duration of the measured amount of time. When the counting register attains a specific degree of filling after the termination of the measured amount of time, the contents of the counting register are displayed. The measured amount of time is initially small and is increased by decades until the correct frequency range is found, thereby providing the fastest operating speed possible.
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