Waveform viewer

Waveform viewer

A waveform viewer is a software tool for viewing the signal levels of either a digital or analog circuit design.John Bergeron, "Writing Testbenches: Functional verification of HDL Models", Kluwer Academic Publishers, 2000]

Waveform viewers comes in two varieties:
# simulation waveform viewers for displaying signal levels of simulated design models, and
# in-circuit waveform viewers for displaying signal levels captured in-circuit while debugging or testing hardware boards (Also, See Waveform monitor)

imulation waveform viewers

In integrated circuit design, waveform viewers are typically used in conjunction with a simulation. A waveform view allows an IC designer to see the signal transitions over time and the relation of those signals with other signals in an IC design, which is typically written in a hardware description language. Simulators can be used to interactively capture wave data for immediate viewing on a waveform viewer; however, for integrated circuit design the usage model is typically to save the output of simulation runs by running batch jobs and to view the waveforms off-line as a static database.

Waveform viewers allow you to zoom in and out over a time sequence, and take measurements between two cursor points. In addition, the waveform view has many ways of displaying signal information, such as in hexadecimal, binary, or a symbolic value.

Most waveform viewers can read an industrial standard waveform database known as Value Change Dump (VCD) or a proprietary wave format. The proprietary wave formats usually have faster record and playback speeds or require smaller memory store space, or save additional signal information for viewing, such as bus transactions.

List of the most well-known viewers

In-circuit waveform viewers

These are built into most logic analyzer, data acquisition cards, and automatic test equipment. In-circuit waveform viewers are included with products from:

* Tektronix
* LabWindows/CVI
* Teradyne

References

ee also

* List of Verilog simulators


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Waveform — means the shape and form of a signal such as a wave moving in a solid, liquid or gaseous medium.In many cases the medium in which the wave is being propagated does not permit a direct visual image of the form. In these cases, the term waveform… …   Wikipedia

  • List of file formats — This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries. See also: List of file formats (alphabetical) This is a list of file formats… …   Wikipedia

  • GTKWave — infobox software name = GTKWave caption = GTKWave viewing many waveforms developer = Tony Bybell latest release version = 3.1.13 latest release date = 20 August 2008 programming language = C operating system = Cross platform genre = Simulator… …   Wikipedia

  • Verilog — In the semiconductor and electronic design industry, Verilog is a hardware description language (HDL) used to model electronic systems. Verilog HDL , not to be confused with VHDL, is most commonly used in the design, verification, and… …   Wikipedia

  • List of Verilog simulators — Verilog simulators are software packages that emulate the Verilog hardware description language. Verilog simulation software has come a long way since its early origin as a single proprietary product offered by one company. Today, Verilog… …   Wikipedia

  • Scansion (EDA) — infobox software name = Scansion developer = Logic Poet latest release version = 0.6 latest release date = 1 September 2008 operating system = Mac OS genre = Waveform viewer website = http://www.logicpoet.com/scansionScansion is a native Mac OS X …   Wikipedia

  • Hades (disambiguation) — Contents 1 In Christianity 2 Computers 3 Music 4 In fiction …   Wikipedia

  • PSpice — is a SPICE analog circuit and digital logic simulation software that runs on personal computers, hence the first letter P in its name. It was developed by MicroSim and used in electronic design automation. MicroSim was bought by OrCAD which was… …   Wikipedia

  • GHDL — Infobox software name = GHDL caption = GHDL, operated via the command line developer = Tristan Gingold latest release version = 0.27 latest release date = 21 July 2008 operating system = Linux, Microsoft Windows genre = Compiler, Simulator… …   Wikipedia

  • Value change dump — is an ASCII based format for dumpfiles generated by EDA logic simulation tools. The standard, four value VCD format was defined along with the Verilog hardware description language by the IEEE Standard 1364 1995 in 1995. An Extended VCD format… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”