Patent ID: 8519718
Filing Date: 2013-08-27
Classification: A62B

Abstract:
1. Tester for testing operational reliability of a cockpit oxygen distribution circuit having a plurality of components ensuring supply of oxygen from the cockpit oxygen distribution circuit to a cockpit crew of an aircraft in an emergency situation, comprising: means for electrically connecting the tester, in place of at least one of the components, to the cockpit oxygen distribution circuit, wherein the means for electrically connecting the tester to the cockpit oxygen distribution circuit comprises a plurality of terminals each having an input and an output, the plurality of terminals corresponding to a plurality of terminals provided on corresponding components of the cockpit oxygen distribution circuit, an indicator for indicating that the electrical connection of the tester to the cockpit oxygen distribution circuit has been established in a predefined manner, wherein the indicator comprises a plurality of light emitting diodes, each light emitting diode connected to an input of the plurality of terminals, and active upon applying a ground potential to the input of the terminals, and switching means for initiating an output signal of the tester, the output signal of the tester simulating an output signal of the component replaced by the tester and being indicative of an operating condition of the component when being connected to the cockpit oxygen distribution circuit.