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The article focuses on the development of digital scopes that sport screens as large as 12.1 inches diagonal in response to users' demand to view waveforms in greater detail. The near-real-time oscilloscope minimizes the drawbacks of sequential-sampling instruments and provides rapid waveform acquisition and deep memory.

This article focuses on vector-network analyzers (VNAs) and related instruments, such as time-domain reflectometers (TDRs). A key reason for focusing on VNAs is the explosion of interest in wireless communication, much of which takes place at 2.4 GHz, 5 GHz, and even higher frequencies. Agilent's new software underscores the fact that the frequency and time domains merely represent different ways of looking at the same phenomena. By applying a swept-frequency sine-wave stimulus to a device under test (DUT) and making measurements with detectors tuned to the stimulus frequency, a VNA accomplishes essentially what a TDR does when it applies a repetitive voltage step to the DUT and examines the reflected signal at the input port. The TDR performs its examination in the time domain, however, using high-speed sequential-equivalent-time-sampling oscilloscope technology. TDRs also claim an advantage over VNAs in simplicity of calibration. There are two main reasons that a VNA's dynamic range is usually greater than a TDR's. The VNA uses a swept-tuned narrowband detector whose internal noise is inherently much lower than that of the wideband detector that the TDR must use. Also, the amplitude of the sinusoidal stimulus signal of the VNA remains relatively constant as its frequency varies. INSET: S IS FOR SMITH CHART AND S-PARAMETERS.

This article presents information on the working of modern, high-performance digital oscilloscopes. Oscilloscopes offer a wealth of features for making users' lives easier--so many features, in fact, that their effect can sometimes be the opposite of what the manufacturer intended. Unlike real-time-sampling scopes, sequential-sampling scopes intentionally undersample their input signals--that is, they sample them at much less than twice the frequency of the highest frequency significant-amplitude component. In many such scopes, the sampling circuit is in a sampling head external to the scope mainframe.

The article informs that despite high-performance scopes' copious built-in intelligence, one still must employ lots of one's own brainpower to obtain meaningful results in high-speed serial-bus debugging. Modern high-performance digital oscilloscopes offer a wealth of features for making users' lives easier--so many features, in fact, that their effect can sometimes be the opposite of what the manufacturer intended. Whereas, typically, the presence of extra capabilities does not complicate instrument use, figuring out whether a wanted feature is present and learning how to invoke and properly use it sometimes can induce considerable frustration.

Compares digital oscilloscopes from Tektronix Inc. and LeCroy Corp. and describes the impact on the latter due to Tektronix's withdrawal from a project proposal from LeCroy. Limitations of the digital-phosphor- oscilloscope mode in the TDS 7000 series from Tektronix Inc.; Summary of eight tests proposed by LeCroy and Tektronix respectively for product performance appraisal; Summary of the throughput results. INSETS: JITTER DISCREPANCIES: NOT EXPLAINED;PARTICIPANTS' BIOGRAPHIES.

Focuses on the development of digital-storage oscilloscopes. Complexity of units under test; Evaluation of the signal amplitudes, periods, frequencies, transition times and slew rates; Increases in scope bandwidth. INSET: AT A GLANCE.

Examines the union of high-speed digitizers and Windows-based personal computers to create digital storage oscilloscopes (DSO). Open-versus-closed-architecture debate over personal computer-based DSO; Windows reliability; Use of personal computer-based scopes' screens for viewing waveforms. INSET: WILL THESE NEW VOICE-CONTROL FEATURES APPEAR NEXT?.

Focuses on cathode ray oscilloscopes. Functions performed by the instruments; Sampling theorem; Reconstruction filtering; Creation of displays; Advantages of real time oscilloscopes; Errors in buying oscilloscopes. INSETS: Handheld DSOs: Powerful yet small.;A DSO in your PC.;DSOs on the Web.;Looking ahead.

This article reports on the serial-data-stream-analysis capabilities of modern high-end digital storage oscilloscopes (DSO) in 2005. Sending data in serial streams is a winning approach because even though serial buses feature shorter clock periods or unit intervals than parallel buses, serial-bus data travels in packets whose duration is many unit intervals. In addition, serial buses use embedded-clocking techniques, which cleverly mix clock lines and relaxing requirements on skew-timing differences among signals that reach their destinations simultaneously. INSET: SCOPE TECHNOLOGIES.

Presents information on the introduction digital-phosphor oscilloscopes by Tektronix company. Features of the device; Background information on the company; Specializations of the company; Methods used by the company to improve and enhance its products.

The article features several mixed-signal oscilloscopes including the MSO4032 from Tektronix, the WaveSurfer Xs from LeCroy and the DL9710L from Yokogawa.

The article presents information on digital-storage oscilloscopes (DSO). They acquire waveforms as sequences of numbers, enabling the automation of many complex calculations. There are several DSO attributes that are useful in power-supply testing. Single-shot phenomena such as power on/off or failure conditions can be captured by a DSO. They can also perform more complex mathematical operations such as integration, differentiation, calculation of exponential functions and logarithms. DSO can also trigger on fault conditions and enable users to view pretrigger data to understand the conditions that caused the fault.

Reports that Tektronix is customizing its digital oscilloscopes for applications such as disk-drive and power-supply testing. Possibility of the benefits of coding in Java emerging; Indication that the packages will work with any scopes Tektronix develops; How Tektronix can adapt machine-language-coded packages to a different ...; Details on the packages.

Introduces LeCroy Corp.'s LCS334 and LCS534 color-display digital storage oscilloscope that feature an analog-persistence mode that mimics analog-scope displays. Features of each product; Suggested retail prices; Product use.

Introduces a new digital storage oscilloscope (DSO) from LeCroy Corp. that offers a feature called Exclusion Triggering which lets the DSO capture complete records only when a circuit fluctuates. DSO's use of the records to complie histograms showing how often each type of failure has occurred; Comparison with the InstaVue DSO manufactured by Tektronix Inc.

The article evaluates the InfiniiVision 4000 X-Series of digital storage oscilloscopes (DSO) and mixed-signal oscilloscopes (MSO) from Agilent Technologies.

The article offers information on Teledyne LeCroy's 12-bit-resolution high-definition oscilloscope.

The article previews the four new value-priced models to the 4000 series of digital phosphor, mixed-signal and mixed-domain oscilloscopes from Tektronix.

The article discusses firmware and software updates for Tektronix digital and mixed-signal oscilloscope families to reduce serial-bus-test complexity and debug time to address standards like Media Orieinted System Transport. Tektronix Visual Trigger lets a user use a mouse or touchscreen to create highly customizable shapes that closely match the waveform. It is indicated that a custom interface to Matlab data-analysis software provides advanced plotting and filter capabilities.

The article previews the Infiniium 96204Q real-time-sampling Digital Storage Oscilloscope (DSO) from Agilent Technologies.

The article previews the InfiniVision 3000 X series of value-priced digital oscilloscopes and one gigahertz N2795A active probe from Agilent Technologies.

The article previews the 100-MHz-bandwidth U1610A and the 200-MHz-bandwidth U1620A oscilloscopes from Agilent Technologies.

The article features the LabMaster 10 Zi-A (LM10Zi-A) modular real-time digital storage oscilloscope (DSO) from LeCroy Corp.

The article previews the THS3000 series 100- and 200-megaHertz (MHz) bandwidth, four-channel, handheld digital sampling oscilloscope from Tektronix Inc.

The article discusses Agilent's 100- to 500-MHz InfiniiVision 3000 X series scopes with built-in arbitrary-waveform-generator (AWG). It offers an explanation of the optional built-in function synthesizer that generates user-defined arbitrary waveforms. An overview of the product's specifications including 8000 10-bit waveform memory samples and 20 MHz output bandwith is presented.

The article evaluates the digital-phospor oscilloscope (DPO)/digital-signal analyzer (DSA)7000D Series comprised of four models from Tecktronix.

The article provides information on 12-bit-resolution, four-channel, 400- and 600-MHz-bandwidth Wave-Runner 6 Zi high resolution oscilloscopes (HROs) from LeCroy.

The article previews the WaveRunner 6 Zi high-resolution-oscilloscopes (HRO) developed by LeCroy.

The article offers information on the InfiniiVision X series of oscilloscopes from Agilent Technologies.

The article presents a comparison of voltage probes from Tektronix, Inc. including the mixed-signal-oscilloscope (MSO)/digital-phosphor-oscilloscope (DPO) 5000 series, the high-bandwidth, low-capacitance TPP1000 and TPP0500, and the MSO/DPO4000B series.

The article features the digital-phosphor-oscilloscope (DPO) digital-signal analyzer (DSA) and mixed-signal-oscilloscope (MSO) 70000C series from Tektronix.

The article provides information on LeCroy Corporation's digital-storage-oscilloscopes (DSO), which offer 20 gigahertz real-time bandwidth on four channels.

The article evaluates the 86100D DCA-X wide-bandwidth equivalent-time-sampling oscilloscope and the 86100D-Sim InfiniiSim-DCA waveform transformation software from Agilent Technologies.

The article previews the Infiniium 90000 X-Series four-channel real-time oscilloscopes from Agilent Technologies.

The article evaluates the WaveAce oscilloscope four-channel models from LeCroy Corp.

The article evaluates the Infiniium 90000 Series oscilloscope from Agilent Technologies.

The article evaluates the MSO70000 series of mixed-signal oscilloscopes (MSOs) from Tektronix.

The article evaluates the WaveRunner Xi and WaveSurfer Xs oscilloscopes from LeCroy Corp.

The article evaluates the digital-phosphoroscilloscope (DPO) line from Tektronix Inc., including DPO/DSA70000B, P7500 TriMode and the DPOJet software.

The article evaluates SDA 7 Zi oscilloscopes with built-in serial-data-analysis from LeCroy.

The article evaluates the $1799, PC-based mixed signal oscilloscope (MSO) 9212 from Link Instruments Inc.

The article evaluates the digital-storage-oscilloscope (DSO) from LeCroy Corp.

The article evaluates the U2781A digital-oscilloscope and waveform generator modules from Agilent.

The article evaluates LeCroy's WavePro 700Zi series scopes and the serial-data analyzer (SDA) 700Zi series.

The article evaluates a series of high-performance real-time-sampling digital-storage oscilloscopes (DSOs) from Agilent Technologies.

The article provides information on the WaveExpert 100H 100-GHz-maximum-bandwidth near-real-time-sampling oscilloscope from LeCroy Corp.

The article features the FlexRay trigger, an integrated oscilloscope-based test tool from LeCroy Corp.

The article offers information on National Instruments' PXle ( (PXi Express) chassis and PXle modular computer instruments, including digitizers and oscilloscopes.

The article evaluates the 5000 series oscilloscope from Agilent Technologies.

The article features the AWG500 Series of arbitrary-waveform generators from Tektronix.