Selecting a Logic Analyzer on Amazon.com
A logic analyzer is a tool for testing and troubleshooting the functionality and performance of multiple digital circuits in hardware. It measures and records both the timing and the state of electronic signals. Electrical engineers and hardware designers use logic analyzers as part of the design and development process for electronic devices.
In the same way that an oscilloscope produces a waveform representing the change in voltage and duration of an electrical signal, a logic analyzer produces a digital diagram representing the state and timing of multiple electronic signals. While analog scopes may have one, two, or four channels for signal input, logic analyzers can record and display electronic signals from 34, 68, 102, or 136 channels. Some logic analyzers may have hundreds of channels for analyzing complex systems.
Three types of analyzers include modular logic analyzers, portable (or standalone) logic analyzers, and PC-based logic analyzers. A modular logic analyzer consists of a benchtop chassis that contains the display, controls, operating computer, and slots for modules with a set number of channels. Multiple modules can be combined into one chassis, resulting in a logic analyzer with a high channel count. Modular logic analyzers provide high performance and accuracy for testing complicated systems. Portable logic analyzers integrate the channels with the display and controls, resulting in a standalone instrument with a set number of channels. A USB logic analyzer consists of PC software and a hardware device for capturing signals. The hardware connects to the PC via a logic analyzer USB cable and transfers data to the computer for analysis.
Factors to consider when choosing a logic analyzer include the number of input channels required, and features such as the amount of memory available to store sampled data, the trigger settings, and the timing and state sampling rates. Some devices may include functionality such as a pattern generator. Manufacturers include Tektronix.