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
1650B New 1650B
1660A New 1660A
PA25 New PA25
tti ta4000 3rd party pre-owned Not-on-file(other-mfr) tti ta4000
tti ta4000 New tti ta4000
Agilent 10269A New 5 Probe Interface 1630D 10269A
Agilent 10269C New Gp Probe Interface 10269C
Agilent 10314D New 80386 PROCESSOR INTERFAC 10314D
Agilent 10343B New Scsi Bus Preprocessor 10343B
Agilent 10466A New 10466A
Agilent 1630G New Logic Analyzer 65Ch 1630G
Agilent 1631D 3rd party pre-owned Not-on-file(other-mfr) 1631D
Agilent 1631D New 1631D
Agilent 16500A New Logic Analysis System Mainframe 16500A
Agilent 16500B New Logic Analysis System Mainframe 16500B
Agilent 16500B 3rd party pre-owned Logic Analysis System Mainframe 16500B
Agilent 16500C 3rd party pre-owned Logic Analysis System Mainframe 16500C
Agilent 16500C New Logic Analysis System Mainframe 16500C
Agilent 16500C PLUS EXTRAS 3rd party pre-owned Not-on-file(other-mfr) 16500C PLUS EXTRAS
Agilent 16500C PLUS EXTRAS New 16500C PLUS EXTRAS
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Logic Analyzers by different manufacturers: