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7554319 |
Circuits and methods for voltage sensing
A voltage sensing circuit includes a voltage divider and a voltage rectifier. The voltage divider divides a first output voltage on a first output voltage line to a first divided output voltage....
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7460967 |
Selectable navigation to automatically discovered events within the acquisition record of a digital sampling oscilloscope
Events discovered by an automatic measurement subsystem in the trace of a DSO are visited using a set of event navigation controls. In a TIME Mode the controls operate to display the first of those...
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7421355 |
Measuring apparatus, measuring method, testing apparatus, testing method, and electronic device
There is provided a measuring apparatus for measuring a signal-under-test, having a comparator for sequentially comparing voltage values of the signal-under-test with a threshold voltage value fed...
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7398169 |
Measuring apparatus, measuring method, testing apparatus, testing method, and electronics device
There is provided a measuring apparatus for measuring a signal-under-test, having a comparator for sequentially comparing voltage values of the signal-under-test with a reference voltage value fed...
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7379830 |
Period determination of a periodic NRZ signal
A method and apparatus for determining the period T p of a signal representing a digitally modulated waveform using NRZ coding with a discrete/integer number of a clock periods between signal...
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7352167 |
Digital trigger
An improved digital trigger circuit has a plurality of data samples extracted from an input electrical signal for each sample clock cycle. The plurality of data samples are compared in parallel...
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7327302 |
Equivalent time asynchronous sampling arrangement
An asynchronous sampling arrangement utilizes sampling of both a high speed data signal and a trigger (clock) signal. The data signal may be either an optical signal or an electrical signal. The...
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7305312 |
Method and apparatus for recording a real time signal
A system, method, and apparatus for obtaining a record of logic level transitions within a signal, and for accurately determining a voltage-time pair exhibited by the signal. To achieve these ends,...
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7262627 |
Measuring apparatus, measuring method, and test apparatus
There is provided a measuring apparatus that generates a first strobe signal and a second strobe signal in synchronization with an output signal, sequentially changes phases of the strobe signals...
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7227349 |
Method and apparatus for the digital and analog triggering of a signal analysis device
A method and apparatus enabling the analog and digital triggering of a signal analysis device such as a Logic Analyzer, wherein separate analog and digital signal paths provide separate analog and...
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7072785 |
Rate measurement for anomalous trigger events
A method and apparatus for processing anomalous trigger event conditions to provide anomalous trigger event rate measurements. The apparatus operates to identify one or more trigger events in at...
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7061226 |
Method to detect a defective element
The present invention relates to a method to detect at least one defective pixel in a spatial light modulator comprising numerous pixel elements. The spatial light modulator is imaged to a...
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7026805 |
Method of setting grids and/or markers in measuring apparatus
A method is provided of setting grids and/or markers on a screen of a display unit of a measuring apparatus. First, a mode of the apparatus is changed into a mode of setting the grids and/or the...
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7005846 |
System and method for application control in measurement devices
A system and method for application control in measurement devices is disclosed. The method includes installing a new application using the device's graphical user interface, extending the device's...
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6987381 |
Apparatus for adjusting waveform display position in waveform display
A waveform display position adjusting apparatus is provided for more conveniently and rapidly adjusting a position at which a waveform is displayed on a waveform display device. The apparatus is...
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6972554 |
Universal aircraft generator electrical bench test apparatus
An electrical test box is provided for selectively connecting a generator to one of a plurality of test devices where the generator has a plurality of circuits. The electrical test box includes an...
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6915218 |
Method of constraints control for oscilloscope timebase subsection and display parameters
An apparatus and method for constraining temporal parameters associated with the acquisition and display of signals under test acquires samples of a signal under test (SUT) as corresponding sample...
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6847199 |
Capturing both digital and analog forms of a signal through the same probing path
An instrument includes a probe providing a single signal path for conveying a signal from a circuit under test to the instrument. A receiver circuit within the instrument divides the path into an...
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6833695 |
Simultaneous display of data gathered using multiple data gathering mechanisms
Waveforms of input/output signals for a device under test (DUT) are simultaneously displayed. A user is presented with an interface that allows the user to specify different modes for capturing...
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6825648 |
Distributorless ignition adapter for diagnostic oscilloscopes
A distributorless ignition adapter for diagnostic oscilloscopes which an interface box, an oscilloscope connection cord and several inductive pick ups. The oscilloscope connection cord has a first...
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6812688 |
Signal acquisition method and apparatus using integrated phase locked loop
A test and measurement apparatus and method wherein a software implemented phase lock loop recovers a clock signal associated with the received data signal, the recovered clock signal being used to...
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6784655 |
Method of setting gribs and/or markers in measuring apparatus
A method is provided of setting grids and/or markers on a screen of a display unit of a measuring apparatus. First, a mode of the apparatus is changed into a mode of setting the grids and/or the...
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6760673 |
Method and apparatus for waveform measurement instrument
Sampling techniques and circuits for a waveform measuring instrument. The sampling techniques and circuits process a series of digital signal samples through a set of sample extractors and...
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6756775 |
Quasi-periodic optical sampling
Repetitive sampling of a data signal is performed. A clock reference is generated. The clock reference has a known period relationship with the data signal. The clock reference and the data signal...
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6753677 |
Trigger jitter reduction for an internally triggered real time digital oscilloscope
Trigger jitter in an internally triggered real time digital oscilloscope can be reduced through correcting the horizontal position value obtained from a conventional trigger interpolation mechanism...
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6614221 |
Deskew fixture
A deskew fixture has a multilayer circuit board from which pairs of mirrored signal launch contact extend from both sides of the circuit board. One pair of contacts is coupled to electrical ground...
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6577964 |
Apparatus and method for determining compliance margin of a waveform relative to a standard
Compliance margin of a waveform is determined relative to a standard, indicating the extent to which the waveform either complies or fails to comply with the standard. An acquisition system...
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6539318 |
Streaming architecture for waveform processing
An oscilloscope apparatus and method of processing waveform data using a streaming architecture. The apparatus has multiple processing objects (processors) that share a common cache memory in which...
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6525525 |
Oscilloscope with simplified setup procedure, and procedure for setting up oscilloscope
A method of operating an oscilloscope includes acquiring waveform data using a group of default acquisition parameters, analyzing the acquired waveform data in accordance with a selected one of...
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6518744 |
General purpose oscilloscope having digital television signal display capability
A portable general-purpose oscilloscope employs circuitry for receiving and converting serial digital video signals to composite and component analog signals via a digital to analog converter. The...
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6483284 |
Wide-bandwidth probe using pole-zero cancellation
A probe apparatus for use with analyzing devices, primarily oscilloscopes and logic analyzers, which uses pole-zero cancellation to provide a probe with low capacitance and wide bandwidth....
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6473701 |
Alternate triggering in digital oscilloscopes
A digital storage oscilloscope includes a source of two or more input signals and a display device. An alternate triggering mechanism includes a selector for selecting one of the input signals. A...
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6466006 |
Graphical system and method for automatically scaling waveforms in a signal measurement system
A signal scaling system and methodology for use in a signal measurement system such as a digital or analog oscilloscope, logic analyzer, network analyzer, spectrum analyzer or waveform generator...
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6459256 |
Digital storage oscilloscope
A digital storage oscilloscope includes first and second memory modules each including a data input section for receiving an input stream of digital data words and generating a sequence of address...
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6437552 |
Automatic probe identification system
The automatic probe identification system of the present invention automatically identifies an electrical test probe as being associated with a particular channel. Specifically, an automatic probe...
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6421630 |
VDT operation monitoring apparatus and method for monitoring
There is provided an apparatus and method for monitoring a VDT operation which allow flexible control over a VDT. A VDT operation monitoring apparatus for putting a VDT in a rest state when a...
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6380939 |
Method and apparatus for providing single button access to oscilloscope delay and trigger centric horizontal display modes
A system for displaying waveforms representing an input signal includes a display subsystem, coupled to a source of the input signal, for displaying a waveform representing the input signal in...
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6380726 |
Smart auto-ranging RMS measurement method and apparatus
An apparatus and method for performing an auto-ranging function in electronics test equipment monitors both the RMS value and the peak value of the input signal to be measured. In the subject...
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6377036 |
Electro-optic sampling oscilloscope
The present invention relates to an electro-optic sampling oscilloscope. The delay circuit in the electro-optic sampling oscilloscope comprises a delay time detecting circuit, a regulation time...
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6333627 |
Apparatus for measuring a profile of an electron beam of a CRT
An apparatus for measuring a profile of an electron beam of a CRT includes a test pattern generator which generates a test pattern having a plurality of separate luminous images on a fluorescent...
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6278268 |
Method for controlling scale parameters of an instrument in response to input to an event-generating control sensor
A scale control method provides fine scale control in a measurement instrument and also provides scale control spanning wide adjustment ranges. The method detects the presence of the user input to...
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6252387 |
Oscilloscope utilizing probe with electro-optic crystal
The present invention relates to an electro-optic sampling oscilloscope in which an electric field generated by a signal to be measured is coupled with an electro-optic crystal, and an optical...
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6249115 |
Method of controlling brightness and contrast in a raster scan digital oscilloscope
A raster scan digital signal acquisition and waveform display instrument displays a dot representing a signal event with a color parameter in accordance with the value of a corresponding data word...
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6232765 |
Electro-optical oscilloscope with improved sampling
An electro-optic sampling oscilloscope (or EOS oscilloscope) is designed to perform measurement such that an electro-optic sampling probe (i.e., EOS probe) is brought into contact with a measured...
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6225972 |
Oscilloscope display with rail indicator
A digital engine analyzer includes an ADC which can become railed to clip an acquired waveform signal. The analyzer has a waveform display system which displays an indication of the rail level and...
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6195080 |
High probability capture of slow trigger rate acquisitions in a digital oscilloscope with variable intensity rasterization
A new oscilloscope design improves the processing of acquired voltage-versus-time data through the efficient high speed acquisition and rasterization of such data into a form that includes...
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6131074 |
Apparatus for calibrating a programmable comparator
A calibration apparatus for a programmable comparator is provided which does not need circuits for offset adjustment and gain adjustment or high precision parts makes possible inexpensive...
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6111400 |
Digital oscilloscope's automated parameter measurement cooperates with trigger reference
A digital oscilloscope automatically selects as the initial instance of a waveform parameter to be measured the instance that is both visible in the displayed trace and closest to the trigger...
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6087825 |
Waveform sampling apparatus
Disclosed is a waveform measuring apparatus in which an integration period T can be discretionally set to a value in accordance with the analog voltage cycle of the device being measured with a...
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6064365 |
Apparatus and method for displaying a signal waveform
An apparatus for displaying a waveform of an input signal on a display includes a synchronization detecting circuit, a sweep generating circuit, a horizontal axis drive circuit, a switching...
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