5
Interface Definition
Polarity Definition of Power Interface
Note:
◆ The plug in the external speaker/earphone is a 2-core monophonic connector,
which will cause a short circuit of the audio signal, resulting in silence.
◆ Direct use of the 2-core to 3-core connector can also cause short-circuit of the
audio signal, resulting in silence.
Definition of Microphone Interface
Wiring Diagram of Earphone/Speaker Plug