LAN Analyzer


Overview:

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. Retrieved from "http://en.wikipedia.org/wiki/Logic_analyzer"

Important lan analyzer products:

Manufacturer Model Condition Description Specs
Greenlee 54801 Netcat + LAN New Greenlee 54801 Netcat + LAN
Absolute Analysis 66-1-1-ENPA2 New Gigabit Ethernet Protocol Analyzer (2-Port) 66-1-1-ENPA2
Absolute Analysis 66-1-1-ENPA4 New Gigabit Ethernet Protocol Analyzer (4-Port) 66-1-1-ENPA4
Agilent 4954A New Lan 4954A
Agilent 85960B New CaLan 2010B SLM plus 85960B
Agilent 85961B New CaLan 3010B Sweep/SLM Plus 85961B
Agilent 85962A New CaLan 3010R Sweep/Ingress Analyzer 85962A
Agilent 85963A New 3010H CaLan Sweep/Ingress Analyzer 85963A
Agilent E7900A New RouterTester 900 4-slot chassis E7900A
Agilent E7907A New RouterTester 900 2-port OC-3c/OC-12c ATM/POS routing test card E7907A
Agilent E7909A New RouterTester 900 2-port OC-48c POS routing test card E7909A
Agilent E7920A New RouterTester 900 6-port channelized DS3 routing test card E7920A
Agilent J2300E New Agilent Advisor - WAN protocol analyzer with option STD J2300E
Agilent J2309B New Internet Advisor LAN: Ethernet/Token Ring Undercradle J2309B
Agilent J2522B New Internet Advisor LAN-Ethernet J2522B
Agilent J2523B New Internet Advisor LAN: Ethernet/Token Ring J2523B
Agilent J2524A New Internet Advisor LAN: FDDI Undercradle J2524A
Agilent J2901A New Internet Advisor LAN: Fast Ethernet J2901A
Agilent J3444A New Internet Advisor LAN: Ethernet/Token Ring Undercradle J3444A
Agilent J3445A New Internet Advisor LAn-Fiber Interface For J3444A J3445A
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LAN Analyzers by different manufacturers: