Logic Analyzer


A logic analyzer captures digital data from a digital system and presents it to a user so that the user can locate failure of the digital system.

A HP 1630D Logic Analyzer showing a timing diagram.The basic problem that a logic analyzer solves is that a digital circuit is too fast to be observed by a human being, and has too many channels to be examined with an oscilloscope.

A logic analyzer would trigger on a complicated sequence of digital events, and then copy a large amount of digital data from the system under test. The best logic analyzers behaved like software debuggers (showing the flow of the computer program), or oscilloscopes.

When logic analyzers first came into use, it was common to attach several hundred "clips" to a digital system. Later, specialized connectors came into use. In modern computer systems various other tools have made logic analyzers obsolete for many uses. For example, many microprocessors have hardware support for software debuggers. Many digital designs, including those of ICs, are simulated to detect defects before the unit is constructed. The simulation usually provides logic analysis displays. Often, complex discrete logic is verified by simulating inputs and testing outputs using boundary-scan logic. None of these exactly reproduce the high-speed data capture function of a logic analyzer, but they cover most real needs for debugging digital circuits

Important logic analyzer products:

Manufacturer Model Condition Description Specs
tti ta4000 3rd party pre-owned Not-on-file(other-mfr) tti ta4000
Agilent 1631D 3rd party pre-owned Not-on-file(other-mfr) 1631D
Agilent 16500B 3rd party pre-owned Logic Analysis System Mainframe 16500B
Agilent 16500C 3rd party pre-owned Logic Analysis System Mainframe 16500C
Agilent 16500C PLUS EXTRAS 3rd party pre-owned Not-on-file(other-mfr) 16500C PLUS EXTRAS
Agilent 1650B 3rd party pre-owned Logic Analyzer, 80 Channel, 35 MHz state 1650B
Agilent 1650B 3rd party pre-owned Logic Analyzer, 80 Channel, 35 MHz state 1650B
Agilent 1650B 3rd party pre-owned Logic Analyzer, 80 Channel, 35 MHz state 1650B
Agilent 1650B 3rd party pre-owned Logic Analyzer, 80 Channel, 35 MHz state 1650B
Agilent 1650B 3rd party pre-owned Logic Analyzer, 80 Channel, 35 MHz state 1650B
Agilent 1650B 3rd party pre-owned Logic Analyzer, 80 Channel, 35 MHz state 1650B
Agilent 1650B 3rd party pre-owned Logic Analyzer, 80 Channel, 35 MHz state 1650B
Agilent 1650B 3rd party pre-owned Logic Analyzer, 80 Channel, 35 MHz state 1650B
Agilent 1650B 3rd party pre-owned Logic Analyzer, 80 Channel, 35 MHz state 1650B
Agilent 1650B 3rd party pre-owned Logic Analyzer, 80 Channel, 35 MHz state 1650B
Agilent 1650B 3rd party pre-owned Logic Analyzer, 80 Channel, 35 MHz state 1650B
Agilent 1650B 3rd party pre-owned Logic Analyzer, 80 Channel, 35 MHz state 1650B
Agilent 16516A 3rd party pre-owned 16 Channel 1 GHz Expansion Card 16516A
Agilent 16517A 3rd party pre-owned 16 Ch, 4GHz Logic Ana High-Speed State/Time Module 16517A
Agilent 16520A 3rd party pre-owned 12 Channel 50 Mbit/s Master Card 16520A
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Logic Analyzers by different manufacturers: