NB-IoT Module Series
BC68-TE-B User Guide
BC68-TE-B_User_Guide 13 / 22
3.1.2. Operation Procedures of Using BC68-TE-B Alone
1. Install USB-UART driver, which can be downloaded from the following address:
https://www.exar.com/product/interface/uarts/usb-uarts/xr21v1412;
2. Insert Micro USIM card into J303, please choose an appropriate USIM card according to hardware
versions of BC68 module.
3. Connect a rod antenna with SMA connector on J304;
4.
Switch “
UART_SWITCH
”
to “MAIN UART TO USB” state;
5. Connect the J301 with PC via Micro USB cable. After turning on BC68-TE-B, UART port information
will be shown on device manager of PC. CH A is the main port and can be used for AT command
communication and firmware upgrading. CH B is the debug port and can be used to view log. For
details of port configuration, please refer to
document [1]
.
Figure 5: UART Ports Displayed on PC
In this process, S102 can be used to reset the BC68 module.
3.2. Operation Procedures with Multi Boards
This section elaborates the operation procedures of using the BC68-TE-B in conjunction with an STM32
Nucleo-64 development board.
NOTE
