File Mass spectrometer quadrupole.JPG thumb right 400px Quadrupole Image Quadrupolemass analyzer.svg thumb right 400px See also Radio Frequency Quadrupole The quadrupolemassanalyzer is one type of massanalyzer used in mass spectrometry . As the name implies, it consists of 4 circular rods, set parallel ... title Mass Spectrometry Principles and Applications publisher John Wiley & Sons, Ltd. location Toronto year 2003 edition Second isbn 0471485667 page 65 ref In a quadrupolemass spectrometer List of mass spectrometry acronyms acronym QMS the quadrupole is the component of the instrument responsible for filtering sample ions, based on their mass to charge ratio m z . Ions are separated in a quadrupole ... travel down the quadrupole between the rods. Only ions of a certain mass to charge ratio m z will reach ... instruments. Triple quadrupoles main Triple quadrupolemass spectrometer A linear series of three quadrupoles can be used known as a triple quadrupolemass spectrometer. The first Q sub 1 sub and third Q sub 3 sub quadrupoles act as mass filters, and the middle q sub 2 sub quadrupole is employed as a collision cell. This collision cell is an RF only quadrupole non mass filtering using Ar, He, or N ... 183 doi 10.1002 oms.1210260404 issue 4 ref The first triple quadrupolemass spectrometer was developed ... with a tandem quadrupolemass spectrometer journal Journal of the American Chemical Society volume ... closely related massanalyzer time of flight mass spectrometry Time of flight sector instrument magnetic ... http www.chem.vt.edu chem ed ms quadrupo.html Quadrupolemass spectrometry Page from the Chemistry Hypermedia Project, summary of the technique and useful diagram Mass spectrometry Category Massanalyzer ... Charges Jun 1960 Paul et al. ref The quadrupole consists of four parallel metal rods. Each opposing ... of anticipated application requirements. In recent decades some manufacturers have produced quadrupolemass spectrometers with true hyperbolic rods. Applications These mass spectrometers excel ... more details
File Quattro II triple quadropole mass spectrometer.jpg right thumb 300 px Waters Quattro II triple quadropole mass spectrometer center . This photo was taken in the old mass spec facility in Whitmore Lab of Pennsylvania State University. A triple quadrupolemass spectrometer is a tandem mass spectrometry tandem mass spectrometer consisting of two quadrupolemass spectrometer s in series, with a non mass resolving radio frequency RF only quadrupole between them to act as a collision cell for collision induced dissociation . The first Q sub 1 sub and third Q sub 3 sub quadrupoles serve as mass filters, whereas the middle q sub 2 sub quadrupole serves as a collision cell. This collision cell is an RF only quadrupole non mass filtering using an inert gas such as Ar, He, or N sub 2 sub gas to provide ... is often abbreviated QqQ, here Q sub 1 sub q sub 2 sub Q sub 3 sub . Structural mass spectrometry This alignment of two mass filters in succession with a collision quadrupole in between allows .... ref name deHoffmann1996 citation last de Hoffmann first E. year 1996 title Tandem mass spectrometry a Primer journal Journal of Mass Spectrometry volume 31 issue 2 pages 129 doi 10.1002 SICI 1096 9888 199602 31 2 129 AID JMS305 3.0.CO 2 T ref Product ion scan The first quadrupole Q sub 1 sub is set to select an ion of a known mass, which is fragmented in q sub 2 sub . The third quadrupole ... quadrupolemass spectrometer journal Journal of the American Chemical Society volume 100 issue 7 ... sub and Q sub 3 sub are scanned together, but with a constant mass offset. This allows the selective ... to a selected mass, allowing only a distinct fragment ion from a certain precursor ion to be detected ... sub 3 sub is set to more than a single mass, this configuration is called multiple reaction monitoring. ref name Anderson2006 citation last Anderson first L. year 2006 title Quantitative Mass Spectrometric ... title Personal reminiscences of forty years of mass spectrometry in Australia journal Organic Mass ... more details
potential Laplace expansion Legendre polynomials Quadrupole ion trap Quadrupolemassanalyzer References ... radiation . Clear Gravitational quadrupole The massquadrupole is very analogous to the electric charge quadrupole, where the charge density is simply replaced by the mass density. The gravitational ... for the Moon, because the math frac 1 mathbf R 3 math term falls quickly. The massquadrupole ... in time thus it also gives off no radiation. The massquadrupole, however, can change in time, and is the lowest ... quadrupole moment will simply be math Q ij M 3x i x j delta ij , math where M is the mass of each hole ... smaller than that of the massquadrupole. See also Multipole expansion Multipole moments Solid harmonics ...Distinguish2 two port network , which is sometimes called quadripole A quadrupole or quadrapole is one of a sequence of configurations of for example electric charge or current, or gravitational mass that can ... structure reflecting various orders of complexity. Mathematical definition The zero trace quadrupole ... rho x math . The indices math i,j math run over the Cartesian coordinates math x,y,z math . The quadrupole ... order moment monopole or dipole in this case is non zero, then the value of the quadrupole moment depends ... sign, same strength point charges which has no monopole moment can have a nonzero quadrupole moment ... or the quadrupole moment can be reduced to zero with the origin at the center. In contrast, if the monopole and dipole moments vanish, but the quadrupole moment does not e.g., four same strength charges, arranged in a square, with alternating signs , then the quadrupole moment is coordinate independent ... field , the contribution to the field s potential from the quadrupole moment is math V ... of the unit vector from the point of interest to the location of the quadrupole moment. Electric quadrupole Anchor electric quadrupole Image QuadrupoleContour.jpg right thumb 200px Contour plot of the equipotential surface s of an electric quadrupole field. The simplest example of an electric quadrupole ... more details
Image Magnetic quadrupole moment.svg right thumb 250px Four bar magnets configured to produce a quadrupole Image Aust. Synchrotron, Quadrupole Focusing Magnet, 14.06.2007.jpg 250px right thumb A quadrupole electromagnet as used in the storage ring of the Australian Synchrotron Image Aust. Synchrotron, Quadrupole Magnets of Linac, 14.06.2007.jpg 250px right thumb Quadrupole electromagnets in blue , surrounding the Linear particle accelerator linac of the Australian Synchrotron , are used to Focus optics focus the electron beam Quadrupole magnets consist of groups of four magnet s laid out so that in the planar multipole expansion of the field the dipole terms cancel and where the lowest significant terms in the field equations are quadrupole . Quadrupole magnets are useful as they create a magnetic field whose magnitude Linear function grows rapidly with the radius radial distance from its longitudinal Coordinate axis axis . This is used in particle beam focusing. The simplest magnetic quadrupole is two identical bar magnets parallel to each other such that the north pole of one is next to the south of the other and vice versa. Such a configuration would have no dipole moment, and its field will decrease at large distances faster than that of a dipole. A stronger version with very little external field involves using a k 3 Halbach cylinder . In some designs of quadrupoles using electromagnet s there are four steel pole tips two opposing magnetic north pole s and two opposing magnetic south poles. The steel is magnetized by a large electric current that flows in the coils of tubing ... of the coils reversed. ref http hyperphysics.phy astr.gsu.edu Hbase magnetic magquad.html Quadrupole ... the Maxwell equations which show that it is impossible for a quadrupole to focus in both planes at the same time. If an F quadrupole and a D quadrupole are placed immediately next to each other ... of a basis of a focusing quadrupole, nothing often a bending magnet , a defocusing quadrupole and another ... more details
Quadrupole splitting is an example of a hyperfine structure hyperfine interaction found in gamma ray spectroscopy , in the circumstance where nuclei with a non radially symmetric shape that is, with a spin quantum number greater than 1 2 are found immersed in an external electric field gradient. It splits a state into two, producing a doublet in the M ssbauer spectroscopy Mossbauer spectrum , and the separation between the states can be used to measure the sign and strength of this electric field gradient, which is affected by the chemical environment of the nuclei. ref http www.cmp.liv.ac.uk frink thesis thesis node18.html Electric quadrupole splitting ref References references Category Atomic physics ... more details
See also Quadrupolemassanalyzer RFQ Beam Coolers A radio frequency quadrupole RFQ is a linear accelerator component ref http epaper.kek.jp e02 PAPERS THPLE045.pdf The ISIS neutron source RFQ. ref generally used at low beam energies, roughly 50keV to 3MeV. It is similar in concept to a quadrupolemass analyser but its purpose is to accelerate a single species beam rather than perform mass spectrometry on a multiple species beam . The RFQ is a combined function component that both accelerates and focusses the beam of charged particles. Invented by Soviet Union Soviet physicists I. M. Kapchinsky and Vladimir Teplyakov in 1970, the RFQ is presently used as an injector by major laboratories and industries throughout the world for radiofrequency linear accelerators. ref name Reiser 2008, p6 Cite isbn 9783527407415 ref References Reflist External links http cdsweb.cern.ch search?ln en&cc Photos&sc 1&p Radio frequency quadrupole&f title&action search Suchen&c Photos Photographs of radio frequency quadrupoles CERN Document Server Category Accelerator physics Category Soviet inventions accelerator stub ... more details
as a component of a mass spectrometer . The invention of the 3D quadrupole ion trap itself is attributed ... massanalyzer journal Anal. Chem. volume 76 issue 16 pages 4595 605 year 2004 month August pmid ... . ref name March 1997 cite journal title An Introduction to Quadrupole Ion Trap Mass Spectrometry journal Journal of Mass Spectrometry year 1997 first Raymond last March coauthors volume 32 issue ..., math lambda sigma 1 , math and math gamma 2 , math and for a quadrupolemass filter , math lambda sigma ... 00345 6 Quadrupole ion trap mass spectrometry a view at the turn of the century, Raymond E. March ... quadrupole ion trap mass spectrometer journal Journal of the American Society for Mass Spectrometry ... doi cite book author Todd, John F. J. March, Raymond E. title Quadrupole Ion Trap Mass Spectrometry ... Category Massanalyzer Category Measuring instruments de Paul Falle it Trappola ionica quadrupolare ...Image Paul Trap.svg thumb right 300px Scheme of a Quadrupole ion trap of classical setup with a particle ... field E blue is generated by a quadrupole of endcaps a, positive and a ring electrode b . Picture 1 and 2 show two states during an AC cycle. A quadrupole ion trap exists in both linear and 3D ... and the mass selective instability mode developed by Stafford et al. led to the first commercial 3D ... trap technology journal International Journal of Mass Spectrometry and Ion Processes volume 60 issue ... The quadrupole ion trap has two configurations the three dimensional form described above and the linear ... ion, but with a quadrupole, this saddle shaped electric field cannot be rotated about an ion in the centre ... a stronger field when the field is focusing than when it is defocusing. Equations of motion Ions in a quadrupole ... trigonometric identity math sin 2 theta cos 2 theta 1 , math gives Image Mass selective instability.gif right 300 px thumb Diagram of the stability regions of a quadrupole ion trap according ... quadrupole The linear ion trap uses a set of quadrupole rods to confine ions radially and a static ... more details
unreferenced date April 2009 Image Busanalyzer.jpg right 200px thumb A typical bus analyzer this one has an adaptor pod to allow it to interface to Serial ATA devices. A bus analyzer is a computer bus analysis tool, often a combination of hardware and software, used during development of hardware or device driver s for a specific bus, for diagnosing bus or device failures, or reverse engineering . A bus analyzer is a type of protocol analyzer , which is designed for use with certain specific parallel and serial bus architectures. It differs from packet analyzers which analyze traffic running across non bus based mediums such as Ethernet networks and wireless LAN s or Personal area network PAN s. The bus analyzer monitors the bus traffic and decodes and displays the data. It is essentially a logic analyzer with some additional knowledge of the underlying bus traffic characteristics. One of the key differences between a bus analyzer and a logic analyzer is notably its ability to filter and extract only relevant traffic that occurs on the analyzed bus. Some advanced logic analyzers present data storage qualification options that also allow to filter bus traffic, enabling bus analyzer like features ref In such a case, it is also sometimes referred to as digital bus logger . This is a kind ... of this fact is that a logic analyzer can be used with a variety of bus architectures, whereas a bus analyzer is only good with one architecture. 2. Targeted Capabilities and Preformatting of data A bus analyzer can be designed to provide very specific context for data coming in from the bus. Analyzers ... analyzer, while users who work with several protocols in parallel my be better served with a Logic Analyzer ... protocols. Specialized bus analyzers are also used in the mass storage industry to analyze popular ... actively engages the bus while the analyzer snoops it. Especially with these bus architectures PCI and PCI Express , manufacturers have bundled these functions together into a Bus Analyzer Exerciser ... more details
Network analyzer may mean Packet analyzer , used on a computer data network Network analyzer electrical , a type of electronic test equipment See also Network management disambiguation ja ... more details
A Protocol analyzer is a tool hardware or software used to capture and analyze signals and data traffic over a communication channel . Such a channel differs from a local computer bus to a satellite link, that provides a means of communication using a standard communication protocol Telecommunications network networked or Point to point telecommunications point to point . Each type of communication protocol has a different tool to collect and analyze signals and data. Protocol analyzer may refer to A Telecom Network Protocol Analyzer A network packet analyzer A bus analyzer An IP Load tester disambig ... more details
Orphan date February 2009 DNA analyzer is a device to determine a person s DNA . While Genetic fingerprinting DNA analyzing usually done in a laboratory, as of 2007 NEC has built a portable DNA analyzer which able to produce the result within 25 minutes. External links http www.japantoday.com jp news 420120 Article in Japan Today dead link date November 2011 http www.nec.com global solutions security product portable dna analyzer.html Portable DNA Analyzer genetics stub Category DNA ... more details
Unreferenced stub auto yes date December 2009 A Hydrogen Analyzer is a device used to measure the hydrogen concentration in steel s and alloy s. It also has industrial applications for Corrosion Monitoring . See also Hydrogen embrittlement Hydrogen sensor Hydrogen leak testing DEFAULTSORT Hydrogen Analyzer Category Hydrogen technologies Category Metallurgical processes Chem stub ... more details
Oslo Analyzer 1938 &ndash 1954 was a differential analyzer type of computer , built in Norway from 1938 to 1942. It was the largest computer of its kind. The differential analyzer was based on the same principles as the pioneer machine developed by Vannevar Bush at Massachusetts Institute of Technology MIT . It was installed in the first floor of the Institute for Theorethical Astrophysics at the University of Oslo , under leadership of Svein Rosseland who had visited MIT in 1933. The machine had twelve integrator s compared to six of the original MIT machine and could calculate differential equations of the twelfth order, or two simultaneous equations of the sixth order. It was when it was finished the most powerful of its kind. Upon the German occupation of Norway on April 9, 1940, Rosseland realized that the machine might become a desirable research tool in the German war effort. So Rosseland personally removed all precision fabricated integration wheels and buried the wheels in sealed packages in the garden behind the institute. The machine contributed to a number of scientific projects, both domestic and international. When it was dismantled, sections of it was placed at the Norwegian Museum of Science and Technology . ref Per A. Holst , Svein Rosseland and the Oslo Analyzer , IEEE Annals of the History of Computing 18 4 16 26, 1996 ref References reflist External links http csdl2.computer.org persagen DLAbsToc.jsp?resourcePath dl mags an &toc comp mags an 1996 04 a4toc.xml&DOI 10.1109 85.539912 Svein Rosseland and the Oslo Analyzer Category Early computers Category One of a kind computers no Oslo Analyzer nn Oslo Analyzer ... more details
Multiple issues orphan January 2011 notability April 2009 OLI Analyzer is a computer software used for simulating aqueous based chemical systems. It is a Graphical programming graphical program developed by OLI Systems, Inc. Morris Plains, New Jersey Morris Plains, NJ , USA that utilizes a predictive thermodynamic framework for calculating the physical and chemical properties of multi phase, aqueous based systems ref Dyer JA, Trivedi P, Scrivner NC, Sparks DL. Lead sorpion onto ferrihydrite. 2. Surface complexation modeling. Environ Sci Technol. 2003 Mar 1 37 5 915 22. ref . Applications The thermodynamic framework is applicable to multi component mixtures of chemical s in water, and is predictive over a wide range of temperature, pressure and concentration of interest. Supported by an in place databank , the software allows users to predict the chemical and phase behaviour of mixtures of Inorganic chemistry inorganic or Organic chemistry organic chemicals in water. Composition The OLI Analyzer program suite contains the following components Stream Analyzer Corrosion Analyzer SCORE Analyzer EVS Analyzer Stream Analyzer Stream Analyzer predicts reaction products, phase splits and complete speciation of all phases for a complex mixture of chemicals in water. Stream Analyzer can be used for computing Bubble point bubble and dew point , pH and pH adjustments, precipitation point, acid base chelant titration curve s and temperature , pressure and composition dependence of Thermophysics thermophysical properties. References references DEFAULTSORT Oli Analyzer Category Chemistry software software type stub ... more details
Image CHNfront.JPG thumb right 250px A CHN Analyzer at the U.S. Geological Survey Woods Hole Field Center. A CHN Analyzer is a Measuring instrument scientific instrument which can determine the Chemical element elemental composition of a sample. The name derives from the three primary elements measured by the device carbon C , hydrogen H and nitrogen N . Sulfur S and oxygen O can also be measured. The analyzer uses a combustion process to break down substances into simple compounds which are then quantified, usually by infrared spectroscopy . See also Combustion analysis External links http pubs.usgs.gov of 2002 of02 371 chnmeth.htm USGS Geochemical Sediment Analysis Procedures http www.rsic.iitb.ac.in Chn.html C H N ANALYZER Sophisticated Analytical Instruments Facility SAIF DEFAULTSORT Chn Analyzer Category Measuring instruments Category Laboratory equipment analytical chemistry stub de Elementaranalyse it Analizzatore CHN ... more details
A signal analyzer employs digital techniques to extract useful information that is carried by an electrical signal. ref De Silva, Clarence W. Vibration and Shock Handbook , CRC Press, 2005, p. 16 63 ref In common usage the term is related to both Spectrum analyzer spectrum analyzers and vector signal analyzer vector signal analyzers . While spectrum analyzer spectrum analyzers measure the amplitude or magnitude of signals, a signal analyzer with appropriate software or programming can measure any aspect of the signal such as modulation . Today s high frequency signal analyzers achieve good performance by optimizing both the Analog signal analog front end and the Digital signal digital back end. ref http www.evaluationengineering.com index.php solutions instrumentation crossing domain boundaries.html Crossing Domain Boundaries , Lecklider, Tom Evaluation Engineering, October 2011, accessed October 10, 2011. ref Theory of operation File Signal analyzer block diagram.png right 500px thumb Modern Signal Analyzer Architecture Modern signal analyzers use a superheterodyne receiver to downconvert a portion of the signal spectrum for analysis. As shown in the figure to the right, the signal is first converted to an intermediate frequency and then filtered in order to Band limited band limit the signal and prevent aliasing . The downconversion can operate in a swept tuned mode similar to a traditional spectrum analyzer , or in a fixed tuned mode. In the fixed tuned mode the range of frequencies downconverted does not change and the downconverter output is then Digitizing digitized for further ... of a spectrum analyzer . The sampling rate of the digitizing digitizing process may be varied ... resampled. Typical usage Signal analyzers can perform the operations of both spectrum analyzer spectrum analyzers and vector signal analyzer vector signal analyzers . A signal analyzer can be viewed ... analysis performed as measurement applications. These measurement applications can be built into the analyzer ... more details
File Screenshot of Alloy Analyzer.png thumb Alloy Analyzer. In computer science and software engineering , the Alloy Analyzer is a software tool which can be used to analyze specifications written in the Alloy specification language Alloy specification language . ref name jackson2006 cite book last Jackson first Daniel authorlink Daniel Jackson computer scientist title Software Abstractions Logic, Language, and Analysis publisher MIT Press year 2006 isbn 978 0 262 10114 1 ref The Analyzer can generate instances of model Invariant mathematics invariants , simulate the execution of operations defined as part of the model, and check user specified properties of a model. The Alloy Analyzer supports the analysis of partial models. As a result, it can perform incremental analysis of models as they are constructed, and provide immediate feedback to users. The Alloy Analyzer, and the associated Alloy language, were developed by a team led by Daniel Jackson computer scientist Daniel Jackson at the Massachusetts Institute of Technology in the United States . Approach to analysis The Alloy Analyzer was specifically developed to support so called lightweight formal methods . As such, it is intended ... techniques commonly used with specification languages similar to Alloy. Development of the Analyzer ... of the Analyzer was eventually implemented as a model finder built atop a Boolean satisfiability problem boolean SAT solver . ref name jackson2006 Through version 3.0, the Alloy Analyzer incorporated ... 4.0 the Analyzer makes use of the Kodkod model finder, for which the Analyzer acts as a front end ... , the Alloy Analyzer performs model finding over restricted scopes consisting of a user defined finite number of objects. This has the effect of limiting the generality of the results produced by the Analyzer. However, the designers of the Alloy Analyzer justify the decision to work within limited ... problems Category Massachusetts Institute of Technology de Alloy Analyzer ... more details
An electrostatic analyzer or ESA is an instrument used in ion optics that employs an electric field to allow the passage of only those ions or electrons that have a given specific energy . It usually also focuses these particles concentrates them into a smaller area. ESA s are typically used as components of space instrumentation, to limit the scanning sensing energy range and, thereby also, the range of particles targeted for detection and scientific measurement. The closest analogue in optics photon optics is a filter optics filter . Radial cylindrical analyzer Electrostatic analyzers are designed in different configurations. A simple version is a radial cylindrical analyzer, which consists of two curved parallel plates at different potentials. Ions or electrons enter the analyzer at one end and either pass through the other end or collide with the walls of the analyzer, depending on their initial energy. In these types of analyzers, only the radius radial component of the velocity of a charged particle is changed by an ESA since the potential on the plates only varies in the radial direction if one considers the geometry in cylindrical coordinates. Poisson s Equation can be then used to calculate the magnitude of the electric field pointing radially inwards. The resultant inward pointing force generated by this electric field will cause the particles trajectories to curve in a uniform ... have the correct motion to exit the analyzer by tracing its physical structure, while others will collide ... have an impact on the particles time of flight through the analyzer as well as exit angle. In practice, the plates are usually oppositely charged and at very high potentials. Also, the inner surface of the analyzer ... field cylindrical energy analyzer The Face Field Cylindrical Energy Analyzer is a very new class of cylindrical .... This new class of analyzer can be used in a variety of applications. It do remote sensing such as measuring ... the designer a better understanding of the response characteristics of the analyzer itself ... more details
and reconstructed Recorder 211 as the Analyzer . It met with Thor and Hercules again, and witnessed the birth of a new Celestial in the Black Galaxy. The Analyzer suffered an informational overload ... later wired the Analyzer into the newborn Celestial standing upon Ego. issue date November 2010 The Analyzer was then rescued by Sif Marvel Comics Sif and Balder Marvel Comics Balder from destruction ... chest cavity. When modified to become the Analyzer, the upper half of its body is still humanoid ... networks. The Analyzer is equipped with an enormous array of advanced, miniaturized sensor systems known as sensitizers and derma circuits, which are primarily located in its head. The Analyzer can levitate itself and fly due to its anti gravity devices. References reflist DEFAULTSORT Analyzer Comics Category Marvel Comics robots tl Analyzer komiks ... more details
Image SWR analyzer measuring a dummy load.jpg 250px thumb An antenna analyzer measuring SWR and complex impedance of a dummy load. MFJ Enterprises Inc. MFJ 269. An antenna analyzer also known as a noise bridge , RX bridge , SWR analyzer , or RF analyzer is a device used for measuring the efficiency of antenna radio antenna systems in radio electronics applications. Theory of operation The antenna analyzer is essentially a bridge where two legs are frequency dependent complex number complex valued Electrical impedance impedance s by impedance matching these legs. When the two impedances are the same the bridge will be balanced. Using this circuit it is possible to either measure the impedance of the antenna connected between ANT and GND, or it is possible to adjust an antenna until it has the same impedance as the network on the left hand side. The bridge can be driven either with white noise or a simple carrier connected to drive . In the case of white noise the amplitude of the exciting signal can be very low and a radio receiver used as the detector. In the case where a simple carrier is used then depending on the level either a diode detector or a receiver can be used. In both cases a null will indicate when the bridge is balanced. Image Antennabridge.png 300px centre thumb A typical antenna bridge, the trimmer electronics trimmer capacitor C is adjusted to make the bridge balance when the variable capacitor on the left is half meshed. Hence the bridge will be able to detect if an Antenna radio aerial is either a resistive or inductive load. Unlike an SWR meter which measures the standing wave ratio in the cable feeding the antenna, a complex impedance antenna analyzer requires little or no transmitted power applied to the antenna. The SWR meter works by measuring the Reflection electrical reflected wave from the antenna back to the transmitter , which is minimal when ... Antenna analyzer DEFAULTSORT Antenna Analyzer Category Electrical circuits Category Electronic test ... more details
one source date April 2011 A dump analyzer is a programming tool which is used for understanding a machine readable core dump . The GNU utils tt strings Unix strings tt , tt file command file tt , ref http www.openbsd.org cgi bin man.cgi?query file&sektion 1 file ref tt objdump tt , ref http linux.die.net man 1 objdump objdump ref tt readelf tt ref http linux.die.net man 1 readelf readelf ref and the powerful tt GNU Debugger gdb tt can all be used to look inside core computer file file s. Introspector is a core dump analyzer for a compiler. ref http sourceforge.net projects introspector introspector ref References reflist Compu stub Category Debugging ... more details
Unreferenced date April 2009 infobox computer hardware generic name Logic analyzer image Logic analyzer Agilent 16902A.jpg caption Logic analyzer invent date invent name conn1 conn2 conn3 via1 1 via2 1 via3 1 class name class1 manuf1 A logic analyzer is an electronic instrument which displays signals in a digital circuit . A logic analyzer may convert the captured data into timing diagrams, protocol decodes, state machine traces, assembly language , or correlate assembly with source level software. Unsourced image removed image 1630analyzer.png thumb right A HP 1630D Logic Analyzer showing a timing diagram. Presently, there are three distinct categories of logic analyzers available on the market The first is mainframes , which consist of a chassis containing the display, controls, control computer, and multiple slots into which the actual data capturing hardware is installed. The second category is standalone units , which integrate everything into a single package, with options installed at the factory. The third category is PC based logic analyzers. The hardware connects to a computer through a USB or Ethernet connection, and then relays the captured signals to the software on the computer ... digital storage oscilloscope with a logic analyzer. The several benefits of these include the ability ... signals and capture on the other. Operation A logic analyzer may be triggered on a complicated sequence ... system. Later, specialized connectors came into use. The evolution of logic analyzer probes has ... pF loading per signal. Once the probes are connected, the user programs the analyzer with the names ... to the very complex such as configuring the analyzer to decode the higher levels of the TCP IP stack and triggering on a certain HTTP packet . At this point, the user sets the analyzer to run mode ... for logic analyzers. See also Bus analyzer External links commonscat inline Logic analyzers Category ... logico nl Logic analyzer ja pt Analisador l gico ru sv Logikanalysator ... more details
mergeinto Total harmonic distortion date April 2012 Total Harmonic Distortion THD Analyzers calculate the total harmonic content of a sinewave with some distortion . A typical application is to determine the THD of an amplifier by using a very low distortion sinewave input and examining the output. The figure measured will include noise, and any contribution from imperfect filtering out of the fundamental frequency . Harmonic by harmonic measurement, without wideband noise, can be measured by a more complex Spectrum analyzer wave analyser . Another application is measurement of the effectiveness of an electronic filter with extremely narrow passband , such as a notch filter in a parametric equalizer . Types of THD meter There are several types of distortion analyzers cn date March 2012 Fundamental suppression sfn Bakshi Bakshi Bakshi 2009 pp 4 23 to 4 26 Heterodyne type sfn Bakshi Bakshi Bakshi 2009 pp 4 26 to 4 ?? Tuned circuit Spectrum analyzer Fundamental suppression analyzer Image THD.jpg thumb right 430px Block Diagram of a THD Analyzer This type of THD analyzer filters out the fundamental frequency of a signal with a notch filter , leaving only distortion products plus noise the ratio of this remnant to the signal amplitude is the THD. Principles of operation Image THD Response.jpg thumb right 400px The frequency response of a Fundamental Suppression Analyzer A fundamental suppression analyzer consists of three main sections input section with Electrical impedance impedance matcher, a notch filter and amplifier section, and an output meter ing circuit. Negative feedback from the bridge amplifier to the pre amp section may be applied to enable the rejection circuit to work more accurately. Working of a typical unit The input is Electrical impedance impedance matched with the rejection circuit with the help of an attenuator and an impedance matcher. This signal is then Pre amplifier pre amplified to a desired level. The following section consists of a Wien bridg ... more details
type of analyzer the moisture meter provides moisture and energy value as well. Moisture ... stream. References Davis, Vaughn, Titan CCA A New Type of Coal Analyzer , presented to D5 Committee of ASTM, Anaheim, California, May 17, 2011. Snider, Kurt, Using An On Line Elemental Coal Analyzer to Reduce Lost Generation Due to Slagging , International On Line Coal Analyzer Technical Conference, St. Louis, November 8 10, 2004. Evans, Michael, Cost Justification for a Coal Analyzer Installation , International On Line Coal Analyzer Technical Conference, St. Louis, November 8 10, 2004. Woodward ... Conference, Lexington, Kentucky, April 30, 2003. DEFAULTSORT Coal Analyzer Category Coal fired power ... more details
Audio Analyzer is a type of test instrument to measure the quality of audio signal. A high quality audio signal has low noise and distortion. An audio Analyzer testing is done on a stimulus response basis, i.e. a test stimulus signal with known specifications is injected into the input of a device under test DUT and the output signal of the DUT is tested by Audio Analyzer. The performance of the DUT is evaluated by comparing the output signal with the known input signal. So, a typical Audio Analyzer consists of a source to generate the stimulus signals and an analyzer to implement the measurements . The industry first audio source HP200A was introduced in 1939 by HP Company. Since then, Audio Analyzer is used in broader industries for product design, performance verification, trouble shooting and maintenance. For example a design engineer wants to test the performance of an amplifier circuit a production engineer wants to test audio quality of an iPad. The popular audio analyzer models include AP2722 Audio Precision , HP8903B HP Agilent , U8903A Agilent and UPV Rohde & Schwarz . Image ... Image U8903A audio analyzer.jpg thumb U8903A, the new generation audio analyzer of early 2010s ... impedances, balanced unbalanced configuration, coupling, user interface etc. Audio Analyzer An audio analyzer implements measurements. It is a system, consisting of a series of precision ... meter, spectrum analyzer, oscilloscope, audio frequency sweeper. The most important specs for analyzer ... signals. The phase measurement requires that analyzer has at least 2 input channels. THD N Signal s total ... change in different frequency points. Frequency domain measurement This is spectrum analyzer display ... Using Audio Analyzer http cp.literature.agilent.com litweb pdf 5990 5878EN.pdf Two Way Radio Testing with Audio Analyzer http cp.literature.agilent.com litweb pdf 5990 4135EN.pdf Migrating Code ... Quick Start Guide for Agilent U8903A Audio Analyzer Category Audio electronics ... more details
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