An oscilloscope includes a signal input circuit, a switching matrix circuit, and a downconverter circuit. The signal input circuit is configured to receive M input signals, wherein at least one of the input signals is a signal comprising at least two carriers. The switching matrix circuit is configured to selectively forward at least one input signal from at least one of the switching matrix inputs to the switching matrix outputs. The downconverter circuit includes a local oscillator and at least two downconverter sub-circuits. The at least two downconverter sub-circuits are configured, for example, to: down-convert a first signal component of the signal that is associated with a first one of the least two carriers based on a local oscillator signal and down-convert a second signal component of the signal that is associated with a second one of the least two carriers based on the local oscillator signal, respectively.

A system maps and stores data in digital three-dimensional oscilloscope, wherein an ADC module has four ADC submodules. Four acquired waveform data are sent to an extraction module, and buffered in a FIFO module. When a trigger signal arrives, FIFO module outputs four extracted waveform data to a mapping address calculation module for calculating a mapping address and a RAM serial number for each point data, and the waveform data comparison and control module performs the reading and writing control of the 4×N dual port RAMs. When mapping number reaches a frame number, the RAM array module outputs its waveform probability values to the upper computer module to convert each value into RBG values, and the display module displays the waveforms of input signals of four channels on a screen according the RBG values.

A method and test system are provided for selectively emphasizing waveforms on a display of the test system. The method includes presenting a graphical user interface (GUI) on the display of the test system; receiving through the GUI a selection of channels to be viewed on the display; receiving through the GUI an indication enabling a waveform emphasis feature; receiving through the GUI an indication of a cycle time; and displaying through the GUI multiple waveforms, respectively produced by the selected channels, by sequentially emphasizing each waveform of the multiple waveforms for the cycle time as a viewable waveform, while de-emphasizing each remaining waveforms of the multiple waveforms in relation to the emphasized waveform for the cycle time.

A configuration device in a test and measurement system including an event generator and a Device Under Test (DUT) to receive one or more events generated by the event generator includes an output display structured to graphically illustrate a first event timeline that includes source event markers for a first test channel for a second test channel, in which the first event timeline and the second event timeline appear on the output display as separate timelines vertically separated from one another. The position of the event delay indicator or a position of the event width indicator may be movable by a user, and moving the position of the event delay indicator or moving the position of the event width indicator causes the event generator to change one or more event generation parameters of the first event based on such movement. Methods are also disclosed.

An oscilloscope includes a time domain input, a logic domain input, and a frequency domain input. The time domain input provides a time domain input signal in a time domain as a first input signal. The logic domain input provides logic level input as a second input signal. The logic level input includes logic levels over time. The frequency domain input provides a third input signal through frequency downconversion.

A test and measurement instrument includes a first input port and a second input port that receive a first input signal modulated according to a first clock signal and a second input signal modulated according to a second clock signal, respectively. The first clock signal and the second clock signal may be asynchronous. The instrument also includes a phase reference that generates clock data for the second clock signal. The instrument includes a processor that determines time bases for the input signals that comprise different rates based on the received and/or generated clock data. The instrument also includes a display coupled to the processor. The display concurrently displays the first input signal in a first graticule according to the first time base and the second input signal in a second graticule according to the second time base.

A digital oscilloscope comprises a sampling unit configured to sample an input signal received from an oscilloscope probe to produce a first stream of digital samples, a first acquisition system configured to store and process the stream of digital samples to produce a first data set, a second acquisition system configured to store and process the first stream of digital samples independent of the first acquisition system to produce a second data set, and a display system configured to concurrently display the first data set in a first format and the second data set in a second format different from the first format.

A digital oscilloscope includes a video input interface, a data processing system, a video output interface, and a clock system. The video input interface is configured to receive a digital video signal; the data processing system receives the digital video signal and processes the digital video signal to generate an oscillogram signal, which includes an oscillogram image and further includes one of a menu image and a frame image of the digital video signal; and the video output interface is connected to the data processing system, receives the oscillogram signal and outputs it to external terminals. The oscilloscope can display a variety of image information, with high intuitiveness, simplified structure, improved portability, and is convenient to use in outdoor places.

An arrangement for signal analysis provides at least one central data-processing unit and a screen unit connected to the at least one central data-processing unit, wherein the central data-processing unit calculates a spectrum and a spectrogram from a digitized signal. The at least one central data-processing unit is embodied in such a manner that it controls the screen unit in such a manner that the spectrogram of the digitized signal, the characteristic of the spectrum of the digitized signal and the characteristic of the digitized signal present in the time domain can be displayed together on the screen unit.

A test and measurement instrument includes a first channel input for accepting a first input signal, a second channel input for accepting a second input signal, a spectrogram processor for producing a first spectrogram from the first input signal and for producing a second spectrogram from the second input signal, and a display for simultaneously showing the first spectrogram and the second spectrogram. Methods are also described.