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
Keysight Technologies Inc. 16822A New (GSA discount) Logic Analyzer with 48 channel pattern generator, 68 channel, 4 GHz timing, 250 MHz state, 1 M depth 16822A
Tektronix TLA7SA08 New (GSA discount) TLA7000 Logic Analyzer Module; 8 Differential Inputs: x4: 8 GTs Serial: 4 GB Memory TLA7SA08
Tektronix TLA7SA16 New (GSA discount) TLA7000 Logic Analyzer Module; 16 Differential Inputs: x8: 8 GTs Serial: 8 GB Memory TLA7SA16
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
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Logic Analyzers by different manufacturers: