System and method for verifying failure detect circuitry in safety compliance test instruments
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United States of America Patent
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Jun 1, 2004
Grant Date -
Dec 25, 2003
app pub date -
Jun 25, 2002
filing date -
Jun 25, 2002
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Abstract
A safety compliance test instrument includes a display capable of displaying prompts, a menu display program, software for displaying a plurality of instrument verification menus, prompts, and messages concerning results of the verification tests, and software for enabling or preventing safety compliance tests from being performed depending on results of the verification. The safety compliance instrument includes at least two different safety compliance tests involving different connections to a device under test. The tests may be selected from the group consisting of a continuity test, a ground test, a dielectric withstand test, and an insulation resistance test, and more specifically from the group consisting of a continuity test, a ground bond test, AC and DC dielectric withstand tests, and an insulation test. The verification system of the invention may be implemented on any test instrument having an interactive display capable of presenting a series of menus, and of having the operator select options presented by the menus, including instruments with full keyboards rather than softkeys, or with cursor control type inputs, as well as one or two line displays that require scrolling.
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