Abstract: A method useful for the characterization of a fixture splits a partially symmetric THRU structure into portions which may then be mathematically removed from both ports of a 2-port measured structure, leaving only the desired device under test (DUT).

Abstract: A new methodology for the measurement of the S-parameters of a high impedance probe allows obtaining a full two port S-parameter set for the high impedance probe. The measured probe S-parameters are then used for characterization of probes. An alternative method characterizes half of the fixture and termination as a one-port network and expanding it into a two-port error box. The two-port error box is then cascaded with the probe input.

Abstract: Configuration of a measurement task on a protocol tester includes displaying a problem field on a display device, the problem field having several network elements of a telecommunication network; graphically activating one of the network elements by a user; displaying different measurement tasks on the display device which are possible with respect to the activated network element; graphically selecting one of the measurement tasks by the user; and entering further parameters for the configuration of the measurement task, proceeding from one level of the network element level by level in lower levels, with the parameters not specified by the user being occupied by standard values.

Abstract: A data compression method for producing spectrum traces may divide signal data into multiple transform frames, produce a spectrum trace for each transform frame using a time domain to frequency domain transform, and combine the multiple frames from the analysis window into a single spectrum trace according to the spectrum amplitude of corresponding points in each frame. A device comprising a port to receive a signal or data set; and circuitry in communication with the port to segment the data record into frames, multiply each frame by a windowing function, transform each frame from a time domain representation to a frequency domain representation, and compress the frames using a detection function to create a single spectrum trace. This data compression provides flexibility to allow users to select analysis length, resolution bandwidth (RBW) and number of trace points independently, eliminating the coupling often found in traditional approaches.

Abstract: Picture quality measurement systems and methods are provided for measuring DC blockiness within video blocks. Block boundaries are located within a test video frame. The relative AC differences within each block are measured using a reference video frame, a statistically estimated reference or a default value of the white video level divided by two. An objective DC blockiness map, a subjective DC blockiness map or both may be generated.

Abstract: A method is provided to predict the location of attention focus probability trajectories due to distractions in a test video. A peripheral sensitivity probability map is created base upon a nominal measurement map, and an attention probability map, which are both based on a test video input. A focus of attention probability map with distraction is produced based upon the peripheral sensitivity map, the nominal measurement map, the attention probability map and a distractibility control input.

Abstract: Embodiments of the present invention relate to a method of measuring a test video frame. A test video input is provided, along with an artifact measurement control, a gradient change measurement is performed based upon the test video input and a gradient change measurement map is provided.

Abstract: The apparatus for a test and measurement instrument consists of multiple integrated circuits with each integrated circuit being connected to its own memory controller. At least one of the integrated circuits is a specialized integrated circuit, which may be a graphics processing unit, a digital signal processor, or a field-programmable gate array. Each memory controller is connected to its own memory. The integrated circuits are connected in a circular arrangement by multiple high-speed interconnects. A bridge is connected to at least the first and last integrated circuits. A system bus connects the bridge to an acquisition module. The acquisition module has a signal bus interface with the system bus being connected to the acquisition module and having its own acquisition hardware. The acquisition hardware is a direct memory access machine that can transfer data to any portion of the memory. There is a signal source connected to the signal bus interface.

Abstract: The method for a test and measurement instrument includes the steps of: providing a test and measurement instrument; attaching a Device Under Test (DUT) to a signal source to be measured with at least one channel of the signal source in electronic communication with at least one of the acquisition modules; collecting data from the DUT; storing the collected data from the DUT in the acquisition module(s); dividing the collected data from the DUT into a plurality of pieces; assigning the plurality of pieces to the plurality of system buses; transferring the plurality of pieces to the memory connected to the processors by moving the plurality of pieces in parallel over their assigned system buses; processing the plurality of pieces with the plurality of processors; and displaying the results obtained by processing the priority of pieces with the plurality of processors.

Abstract: Apparatuses for a test and measurement instrument provide an instrument capable of handling acquisition, transfer, analysis, and display of large quantities of waveform data and complex waveforms. The apparatus for a test and measurement instrument consists of multiple processors with each processor being connected to its own memory controller. Each memory controller is connected to its own memory. The processors are connected in a circular arrangement by multiple high-speed interconnects. There are multiple bridges with each processor being connected to its own bridge. There are multiple system buses with each bridge been connected to its own system bus. A housing encloses the processors, memory controllers, high-speed interconnects, and bridges.

Abstract: Embodiments of the present invention comprise methods, systems, and apparatus for multi-domain markers.

Abstract: Apparatuses for a test and measurement instrument provide an instrument capable of handling acquisition, transfer, analysis, and display of large quantities of waveform data and complex waveforms. The apparatus includes multiple processors with each processor being connected to its own memory controller, wherein each memory controller is connected to its own memory. Each processor is connected to its own respective bridge, and each respective bridge is connected to its own respective system bus. Each respective system bus is connected to its own respective acquisition module having its own acquisition hardware. Each piece of acquisition hardware is a direct memory access machine that can transfer data to any portion of the memory. Each of multiple signal sources is connected to its own signal bus interface.

Abstract: Apparatuses for a test and measurement instrument provide a scalable test and measurement instrument capable of handling the acquisition, transfer, analysis, and display of large quantities of waveform data as well as complex waveforms. The apparatus for a test and measurement instrument consists of multiple processors with memory connected to the processors. There are multiple bridges with each processor being connected to its own bridge. There are multiple system buses with each bridge been connected to its own system bus. There are multiple acquisition modules having signal bus interfaces with each system bus being connected to its own acquisition module and having its own acquisition hardware. Each piece of acquisition hardware is a direct memory access machine that can transfer data to any portion of the memory. There are multiple signal sources with each signal source being connected to its own signal bus interface.

Abstract: A system and method for performing wide-band spectral analysis of transient signals using a real-time spectrum analyzer (RTSA). A frequency window is selected for RTSA acquisition, the frequency window being narrower in bandwidth than the frequency spectrum of interest. An RTSA is successively tuned to a plurality of different frequencies within the frequency spectrum of interest, where such successive tuning is controlled based on a characteristic of the signal. The RF signal is received, and, for each of the plurality of different frequencies, power data is acquired for the signal in a band centered on the frequency and having a bandwidth equal to that of the frequency window. A representation of the frequency spectrum of interest is then constructed from the power data acquired during the successive tunings of the RTSA.

Abstract: Apparatuses for a test and measurement instrument provide an instrument capable of handling acquisition, transfer, analysis, and display of large quantities of waveform data and complex waveforms. The apparatus for a test and measurement instrument consists of multiple processors with each processor being connected to its own memory controller. Each memory controller is connected to its own memory. The processors are connected in a circular arrangement by multiple high-speed interconnects. A bridge is connected to at least the first and last processors. A system bus connects the bridge to an acquisition module. The acquisition module has a signal bus interface with the system bus being connected to the acquisition module and having its own acquisition hardware. The acquisition hardware is a direct memory access machine that can transfer data to any portion of the memory. There is a signal source connected to the signal bus interface.

Abstract: A graphical user interface (GUI) is provided for use in a system, such as a video test and measurement instrument. The GUI provides a mechanism for a user to select one, or more, ranges of values. Embodiments of the GUI provide an ability to correlate ranges between a first sequence and second sequence, such that two ranges of values are related in some fashion.

Abstract: A robust video temporal method for registration between test and reference video sequences without a priori knowledge of the respective signal parameters initially produces frame and subimage distillation measurements from the test and reference video sequences. The frame distillation measurements are linearly aligned using a local Pearson's cross-correlation coefficient (LPCCC) image to obtain a best alignment line, each pixel of which represents an LPCCC cross-correlation coefficient between frames of the test and reference video sequences. For each pixel of the best alignment line that is below a threshold, a vertical search is performed in the LPCCC image for a higher cross-correlation coefficient as the best cross-correlation coefficient to achieve temporal mapping between frames of the test and reference video sequences.

Abstract: A differential measurement probe has a ground clip system for electrically coupling outer shielding conductors of differential probing tips together. In one embodiment, the probing tips independently move vertically relative to each other with the ground clip system secured to each of the outer shielding conductors of the probing tips. In a further embodiment, the probing tips move both vertically and horizontally and the ground clip system has a spring wire member that is secured to the probe. The spring wire member is formed with various sections having various angles to each other that allows one section to slidably engage one of the outer shielding conductors on one of the probing tips and another section to slidably engage the outer shielding conductor of the other probing tip.

Abstract: System and method for combining call records for different protocols into a single combined call record during a call. An embodiment comprises correlating messages having multiple protocol formats, comprising correlating messages complying with a first protocol into a first call record using a first correlation key, correlating messages complying with a second protocol into a second call record using a second correlation key, detecting a key message complying with the first protocol, the key message having a fetch key parameter associated with messages complying with the second protocol, combining data from the second call record into the first call record to create a combined call record, and creating a pointer linking the second call record to the first call record.

Abstract: System and method for identifying interfaces and channels in a network using messages passing through the network. An embodiment comprises detecting components of a network, comprises capturing a message from the network, extracting a network node identifier from the captured message, comparing the network node identifier to a database of known network nodes, and, if the network node identifier is not associated with a known network node, then adding an entry for a new network node to the database, wherein the new network node entry includes the network node identifier.