Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1975-10-06
1977-08-09
Strecker, Gerard R.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
1791753F, 324 585B, G01R 3111
Patent
active
040413810
ABSTRACT:
A method of determining a parameter related to reflection in a transmission line said method consisting in repeatedly transmitting into said line a digital word which is a predetermined number of digital bits in length; receiving said words after reflection back from the point of reflection; repeatedly producing similar digital words, each of the aforesaid number of bits in length; delaying said similar words by a series of steps of time delay, each step occurring after a predetermined number of repetitions of said similar words; and utilizing the occurrence of correlation between received reflected words and delayed similar words to determine the said parameter.
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