TTL serial port and this communication module need to connect the module of the UART_RX, UART_TX and GND (the corresponding position of PCB is marked). The reserved interface control module of the serial port at TTL level. Serial port (without serial port control) The higher the value is, the higher the threshold is, the easier the weak signal is to be silent.
AMCAP threshold adjustment (when the AMCAP switch is on)īriefly press the FRE knob for AMCAP interface threshold adjustment, it is possible to adjust the threshold movement of the AMCAP according to the specific use situation. Long press the FRE knob to turn on or off the AMCAP, the LCD subtitle display ON means to turn on the AMCAP, and means to turn off the AMCAP.Ĩ>. Press the VOL knob to switch the mute / non-mute button down. Turn the FRE to adjust the reception frequency, while the LCD display shows the current frequency, and press the encoder handle for the mute / non-mute switch. Turn the VOL encoder to adjust the volume, while the LCD display shows the volume of the series. if the headset is plugged in, the audio will automatically switch to the channel headphone, and the channel speaker will be closed automatically.
If the horn is needed, access the speaker port. This module is with 3WX2 channel audio amplifier. To better receive the FM signal, it is recommended to extend the antenna with a length of 75 centimeters. The FM_ANT port is used to connect the FM antenna. At maximum module volume, the maximum power supply current is around 1A, which requires the battery for enough output current. The normal operating voltage of this module is 3.0-5.0 V, not exceeding this range. It is not possible to use a power supply without filter (for example as a mobile phone charger, mobile power supply, and other switching power supply), otherwise, the interference caused by power supply will affect the normal work of this module. The power supply is recommended for the battery or other stabilized power supply. "-" E "+" are the anode and the supply cathode (battery). Corresponding door module (marked on the PCB).
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