The logic analyzer is a very valuable digital test instrument used for debugging digital-based circuitry. In spite of its usefulness, many users still prefer to use an oscilloscope as their basic debugging and test tool, despite its limitations for working on digital circuits, because existing logic analyzers are too difficult to use, cumbersome, and expensive. 

In order to understand why this is so, it is useful to take a brief look at the history of the logic analyzer. Logic analyzers first came onto the market about 30 years ago, principally as a support tool for hardware design engineers. In this regard, the feature emphasis and operation was closely tied to the oscilloscope and served the needs of hardware debug and test.

Over the years, the logic analyzer was used more and more for microprocessor software debug and was closely tied to the ability of the logic analyzer to monitor microprocessor signal activity. Along with this application came a large bundle of features, most of which exceeded the needs of hardware engineers. The consequence was to add additional complexity and cost.

This trend – the virtual substitution of the logic analyzer for the traditional microprocessor emulation tool (in-circuit emulator or ICE) – has continued to this day. The result, therefore, is that those who need the principal function of a logic analyzer – the selective acquisition of digital data and its display as a pattern of waveforms – are burdened with a tool that has a different emphasis and high cost.

Recognizing this fact, Barrett Instruments has invented an unique product called the ScopeAlyzer™, which is a compact way of identifying its functionality: "Scope + ScopeAlyzer™ = Logic Analyzer."

What sets the ScopeAlyzer™ apart from others?  Targetted features and affordability. Most exisiting logic analyzers have an extraordinary range of features. Of course, these features look good on paper, but the question that should be asked is: do I need all these features? After all, you don’t get something for nothing, so as you add more and more features you add additional burden to the user in terms of learning how to use the instrument and a substantial increase in price.

Barrett Instruments believes that most users of logic analyzers have a simpler need. We believe users mostly want to examine the behavior of a handful of signals, and that a sample rate of 100 Mhz and a memory depth of 128K is more than adequate. Furthermore, we believe that most users of logic analyzers only have an occassional need and therefore want simplicity of use, high-performance, and an affordable price tag.

What do you think? Let us know.