User's Manual

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24
5
-7 dBm
6
-13.5 dBm
7
-19.5 dBm
Note
Take effect immediately, save when power off
5.4.39 AT+MTU Set Bluetooth single packet length
Command
Response
Inquiry
AT+ MTU?
+OK=[para]
Set
AT+MTU =[para]
+OK：success
+ERR=[NUM], error
Parameter
Para MTU value, Min is 23，max is 247.
Note
Take effect immediately, save when power off
6 Quick start
Software for debugging and parameter setting：
 PC serial tool - AccessPort.exe;
 Phone ble debugging APP - nRF connect
6.1 Configuration mode guidance
6.1.1 Serial port configuration
 Confirm whether the module is currently in configuration mode (if not connected, the module can be
configured, if it is connected, you need to send "+++" through the serial port
 Set AccessPort. string related configuration (default configuration: 115200, 8, 1, none, no flow empty), as
shown below AccessPort. parameter configuration diagram;