Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schlumberger Overseas Messgeratebau und Vertrieb GmbH
Schlumberger Overseas SA
Original Assignee
Schlumberger Overseas Messgeratebau und Vertrieb GmbH
Schlumberger Overseas SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schlumberger Overseas Messgeratebau und Vertrieb GmbH, Schlumberger Overseas SAfiledCriticalSchlumberger Overseas Messgeratebau und Vertrieb GmbH
Publication of FR2207388A1publicationCriticalpatent/FR2207388A1/fr
Application grantedgrantedCritical
Publication of FR2207388B3publicationCriticalpatent/FR2207388B3/fr
G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
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Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Measuring Frequencies, Analyzing Spectra
(AREA)
Monitoring And Testing Of Transmission In General
(AREA)