In software development, a beta test is the second phase of software testing in which a sampling of the intended audience tries the product out. (Beta is the second letter of the Greek alphabet.) Originally, the term alpha test meant the first phase of testing in a software development process. The first phase includes unit testing, component testing, and system testing. Beta testing can be considered "pre-release testing." Beta test versions of software are now distributed to a wide audience on the Web partly to give the program a "real-world" test and partly to provide a preview of the next release.
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•Build and Beta test the MCMHU using new and existing driver circuitry in a residential environment moving away from the Lab.
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Sounds to me pre-release is in full motion.
Thought I might help explain Beta(minus the software)
jmo