| Patents for G01R 23 - Arrangements for measuring frequencies; Arrangements for analysing frequency spectra (7,503) |
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| 10/29/1992 | DE4113119A1 Measuring mean period duration of pulse train - forming integration time value, corresp. to integration time, by adding preset measuring time and rest time value |
| 10/27/1992 | US5159615 Digital frequency detection circuit |
| 10/21/1992 | EP0509654A2 Time domain compensation for transducer mismatch |
| 10/20/1992 | CA1308936C Optical fibre interferometer |
| 10/14/1992 | CN2118992U Frequency meter |
| 10/06/1992 | US5153599 Clock test apparatus for electronic device |
| 10/06/1992 | US5153597 Acousto-optical classifier |
| 09/30/1992 | EP0506358A2 Sampling-type optical voltage detector |
| 09/29/1992 | US5151866 High speed power analyzer |
| 09/29/1992 | US5151666 Oscillation stoppage detection circuit |
| 09/23/1992 | EP0505324A1 Device for counting and storing the number of pulses of a signal within a time interval |
| 09/23/1992 | CN2116913U No-contact electrified wire netting frequency testing device |
| 09/17/1992 | WO1992015888A1 Electric circuit for measuring the frequency of laser doppler signals |
| 09/16/1992 | CN1018296B Power system harmonic surveying method and instrument |
| 09/03/1992 | WO1992015019A1 A frequency ratio measurement device and a frequency counter |
| 09/02/1992 | CN1064155A Synchronous non-seam counter of counting signals |
| 08/20/1992 | CA2059916A1 Multi-rate superresolution time series spectrum analyzer |
| 08/19/1992 | EP0499346A1 A method of testing an amplifier to establish its distortion characterstics due to intermodulation products |
| 08/12/1992 | EP0497847A1 A wide bandwidth rf spectrum analyser. |
| 08/11/1992 | US5138252 Automatic scaling for display of modulation domain measurements |
| 08/05/1992 | CN1017751B Analytical instrument of double triphase real-time electric power harmonic wave |
| 08/04/1992 | US5136591 Measuring method and device for fault analysis of digital transmission paths |
| 07/29/1992 | CN1063193A Microprocessor controlled digital aft unit |
| 07/29/1992 | CN1063192A Digital method and apparatus for measuring frequency of if signal |
| 07/28/1992 | US5134481 Method of automatically measuring the horizontal scan frequency of a composite synchronism signal, and an electronic circuit operating in accordance with the method |
| 07/23/1992 | WO1992012501A1 Apparatus and method for improving the resolution with which a test signal is counted |
| 07/21/1992 | US5132630 Heterodyne analyzer for measuring frequency characteristics of quadripoles |
| 07/15/1992 | CN1062793A Fast signal spectrum analytical method |
| 07/08/1992 | EP0493763A1 Microprocessor controlled digital aft unit |
| 07/08/1992 | EP0493755A2 Digital method and apparatus for measuring the frequency of an IF signal |
| 07/07/1992 | US5128679 Electronic combat effectiveness monitor |
| 07/07/1992 | US5128607 Constant events frequency measurement and fast inverse circuit |
| 06/24/1992 | EP0491403A2 Device for estimating the carrier frequency of a digital signal |
| 06/24/1992 | CN2108308U Audiofrequency measurer |
| 06/23/1992 | US5124930 Method for analyzing a signal by wavelets |
| 06/17/1992 | EP0490274A2 Optical pulse oscillator and light frequency measuring apparatus using the same |
| 06/16/1992 | US5122806 Method for finding defective active array modules using an FFT over phase states |
| 06/16/1992 | US5122732 Multi-rate superresolution time series spectrum analyzer |
| 06/16/1992 | US5122731 Method and apparatus for frequency spectrum analysis |
| 06/10/1992 | CN1061851A Three phase if harmonic analysis circuit |
| 06/09/1992 | US5121337 Method for correcting spectral data for data due to the spectral measurement process itself and estimating unknown property and/or composition data of a sample using such method |
| 06/09/1992 | CA1303224C Simultaneous-delay correlator apparatus |
| 06/09/1992 | CA1303134C Method and a circuit for determining the momentary frequency of a signal |
| 06/02/1992 | US5119076 Measuring spectral features using a cursor and a marker |
| 06/02/1992 | US5119018 Spectrum analyzer having functions for simultaneously executing plural kinds of detections and displaying resultants thereof |
| 06/02/1992 | US5119017 Bandwidth analysis system and method |
| 06/02/1992 | US5118967 Adaptive arrangement for identifying a periodic signal |
| 05/29/1992 | WO1992008990A1 Inexpensive portable rf spectrum analyzer with calibration features |
| 05/27/1992 | EP0486668A1 Anti-aliasing for frequency output sensors |
| 05/27/1992 | CN1016817B Microwave freq. measuring method and instrument without a pll |
| 05/26/1992 | US5117192 Control circuitry for quartz crystal deposition monitor |
| 05/26/1992 | US5117179 Swept signal analysis instrument and method |
| 05/21/1992 | DE4032056C1 Determining slip frequency for control of asynchronous motor - calculating cross product of stator current voltage and frequency vectors to increase stator frequency bandwidth towards DC |
| 05/19/1992 | CA1301350C Obtaining a selected frequency component in rectangular coordinates from a set of electrical waveforms |
| 05/13/1992 | EP0484975A2 Continuous overlapping frequency measurement |
| 05/13/1992 | EP0484629A2 Frequency measurement from a constant number of events with a fast inverse circuit |
| 05/13/1992 | EP0484618A1 Automatic scaling for display of modulation domain measurement |
| 05/07/1992 | DE4035191A1 Electronic frequency monitoring of linear and rotary movements - using two retriggerable monostable multivibrators for machine or plant |
| 05/06/1992 | EP0483527A2 Burst signal spectrum measuring system with stepwise sweeping |
| 05/06/1992 | EP0483436A1 Clock frequency tester |
| 05/05/1992 | US5111134 Method and apparatus for determining the frequency of short oscillation bursts of electrical signals |
| 05/05/1992 | CA1300225C Method and device for digitally determining the frequency and phase of a signal |
| 04/30/1992 | WO1992007275A1 Spectral data measurement and correction |
| 04/28/1992 | US5109188 Instantaneous frequency measurement receiver with bandwidth improvement through phase shifted sampling of real signals |
| 04/21/1992 | US5107439 Continuous overlapping frequency measurement |
| 04/15/1992 | EP0480720A2 Bandwidth analysis system and method |
| 04/13/1992 | WO1992007326A1 Method of estimating property and/or composition data of a test sample |
| 04/13/1992 | CA2052187A1 Bandwidth analysis system and method |
| 04/07/1992 | US5103402 Method and apparatus for identifying, saving, and analyzing continuous frequency domain data in a spectrum analyzer |
| 04/01/1992 | EP0477379A1 Waveform display apparatus for easily realizing high-definition waveform observation |
| 04/01/1992 | CN2100634U Extra-corporal testing instrument for implanted pacemaker |
| 03/31/1992 | CA1298386C Intrapulse radar receiver |
| 03/24/1992 | US5099243 Digital frequency measurement receiver with bandwidth improvement through multiple sampling of complex signals |
| 03/24/1992 | US5099200 I.f. calibration system |
| 03/24/1992 | US5099194 Digital frequency measurement receiver with bandwidth improvement through multiple sampling of real signals |
| 03/18/1992 | CN2099321U Portable multifunction signal generator/tester |
| 03/17/1992 | US5097490 Apparatus and method for improving the resolution with which a test signal is counted |
| 03/13/1992 | WO1992004634A1 Frequency counter and method of counting frequency of a signal to minimize effects of duty cycle modulation |
| 03/13/1992 | CA2091349A1 Frequency counter and method of counting frequency of a signal to minimize effects of duty cycle modulation |
| 03/12/1992 | DE4123983A1 Iterative extrapolation and high resolution spectral analysis - performing iterations exclusively in frequency domain and expanding windowedsignal in time domain |
| 03/11/1992 | EP0473949A2 Analysator, especially network analysator for the frequency selective measurement and display of frequency dependant measuring parameters |
| 03/11/1992 | EP0473664A1 Analysis of waveforms. |
| 03/11/1992 | CN2098689U Six-channel real-time harmonic analyzer |
| 03/10/1992 | US5095452 Device for accurately displaying physical measure by adjusting the outputs from pulse counters |
| 03/10/1992 | US5095264 Frequency counter and method of counting frequency of a signal to minimize effects of duty cycle modulation |
| 03/10/1992 | US5095263 Anti-aliasing for frequency output sensors |
| 03/10/1992 | CA1296906C Time interval to digital converter with smoothing |
| 03/04/1992 | EP0472578A1 Apparatus and methods for the generation of stabilised images from waveforms. |
| 03/04/1992 | EP0472524A1 Device for identifying traffic on a paired cable. |
| 03/03/1992 | CA1296764C Frequency detector |
| 02/18/1992 | US5090034 Dual channel ionization counter |
| 02/18/1992 | US5089770 Frequency measuring system |
| 02/13/1992 | DE4036107C1 Telemetry period duration measuring procedure - transferring counter result with coded measuring period count to telemetry receiver |
| 02/05/1992 | EP0468999A1 Cerebral biopotential analysis system and method. |
| 01/23/1992 | WO1992001210A1 Technique for improving the resolution of an a/d converter in a spectrometer using dither |
| 01/22/1992 | EP0467104A2 System and circuits using Josephson junctions |
| 01/08/1992 | EP0464675A2 Method and device for determining the beat frequency of amplitude- or intensity modulated pulse signals |
| 01/08/1992 | EP0464115A1 Process and device for real-time spectral analysis of complex unsteady signals |
| 01/07/1992 | US5079730 Process and apparatus for the evaluation of timing signals with periodic components or pulse sequences |
| 01/02/1992 | EP0463307A2 Circuit for comparing a measured frequency with a reference frequency multiplied by a factor |