NB-IoT  Module  Series 
                                                                                   BC660K-GL  Log  Capture  Guide 
 
BC660K-GL_Log_Capture_Guide             13 / 24 
 
 
 
4 Log  Capture     
 
To ensure the log messages are available for use and easy to analyze, you need to choose the right DB 
file and make an appropriate calibration of the single board. Please follow the steps below: 
 
Step 1: Confirm that the module has been calibrated. 
Step 2: Start the EPAT tool. 
Step 3: Configure the baud rate for log capture. 
Step 4: Select a database file. 
Step 5: Capture the log. 
Step 6: Save the log. 
 
4.1. Calibration Confirmation   
 
After connecting the module to the PC, confirm whether the module has been calibrated. All tests and 
applications of the module shall be performed in this mode, or the module may not work normally. 
 
Run the following commands to check whether the module has been calibrated. If not, calibrate it for for 
the subsequent tests and applications.   
 
AT+QRFSTAT 
+QRFSTAT: NOT CALIBRATE  //The module has not been calibrated. Tests cannot be performed.   
 
OK 
AT+QRFSTAT 
+QRFSTAT: CABLIBRATE      //The module has been calibrated. Tests can be performed and logs 
                  captured.   
OK 
 
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