Method for testing an audio signal system and aircraft comprising an audio signal system

US11601769B2 · kind B2 · utility

Assignee

• AIRBUS OPERATIONS LIMITED · DE

Inventors

• Frank Khelfa · Hamburg, DE
• Johannes Passand · Hamburg, DE
• Christian Dehnke · Buxtehude, DE
• Matthias Heinisch · Hamburg, DE

Key dates

• Filing date: Nov 30, 2021
• Grant date: Mar 7, 2023
• Expiry date: Nov 30, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04R2499/13
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for testing an audio signal system having multiple audio component connection sockets, each socket having at least one audio signal interface connected to a ground interface of the socket via a series circuit including a resistor and a capacitor, including feeding, via a signal processing device, a time domain reflectometry test signal into a wired network of the audio signal system, in which the sockets are connected to the signal processing device via differently lengthed electrical lines, detecting in a temporally resolved manner, via the signal processing device, test return signals reflected at the multiple sockets, comparing the detected test return signals with a temporally resolved reference pattern for test return signals, which reference pattern was created under predefined boundary conditions, and determining a faulty connection of a socket if comparing the detected test return signals with the reference pattern reveals a deviation above a predefined threshold value.