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    • 2. 发明授权
    • Portable audio system and audio cable continuity tester
    • 便携式音频系统和音频电缆连续性测试仪
    • US4670709A
    • 1987-06-02
    • US595341
    • 1984-03-30
    • John Iredale
    • John Iredale
    • G01R31/02G01R31/04
    • G01R31/045G01R31/026
    • A portable battery powered tone source with a built-in audio cable tester. Plural outputs consist of -40 dB, mic level; -10 dB line level and 1W speaker level. Continuity in the system under test from input to speakers causes an audio frequency signal to be present at speakers. This systems own speakers can be used as monitors in the testing process. Moving the device (source) enables the user to audibly locate the point at which the continuity starts/stops. At such time the user can test the audio castle at that point. The various plugs of the device are compatible with all common audio jacks enabling the user to test all types of audio equipment as well as all types of audio cables with only one device. The device can also be used to test any direct point-to-point connection such as common ground or a PC board run with a simple test lead adaptor.
    • 带有内置音频电缆测试仪的便携式电池供电音源。 多个输出包括-40 dB,麦克风电平; -10 dB线电平和1W扬声器电平。 从输入到扬声器的待测系统的连续性会导致音频信号出现在扬声器上。 该系统自带的扬声器可用作测试过程中的显示器。 移动设备(源)使用户可以可视地定位连续性开始/停止的点。 在这样的时间,用户可以在那时测试音频城堡。 设备的各种插头与所有常见的音频插孔兼容,使用户能够使用只有一个设备来测试所有类型的音频设备以及所有类型的音频电缆。 该设备还可用于测试任何直接点对点连接,如公共地面或使用简单的测试导线适配器运行的PC板。