A logic analyzer is an electronic instrument that displays signals in a digital circuit that are too fast to be observed and presents it to a user so that the user can more easily check correct operation of the digital system. They are typically used for capturing data in systems that have too many channels to be examined with an oscilloscope. Software running on the logic analyzer can convert the captured data into timing diagrams, protocol decodes, state machine traces, assembly language, or correlate assembly with source-level software.
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 LPT connection and then relays the captured signals to the software on the computer. These instruments are less expensive than either mainframes or standalone units although they lack the sophisticated functionality.
Agilent and Tektronix make up over 95% of the industry's revenue
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