User's Manual

L710 EVB User Manual
Copyright© Shanghai Mobiletek Communication Ltd
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Figure5-1: L710 RS232 (DB9) Port
Note: .About the serial port baud rate associated Settings, please refer to L710 software
user manual.
5.2 USB（AT UART）Interface
In addition to the DB9 serial port described in 5.1 for AT communication, L506_EVB_V3 also
provides a set of USB virtual serial ports with exactly the same functions as DB9 serial ports for
AT instruction and data transmission. In use, also need to wave switch S4 to the right. DB9 serial
port function is turned off after USB cable is plugged in. AT instruction and other functions can
only be completed through this serial port.
Figure5-2: USB（AT UART）Port
5.3 USB
（
DEBUG UART
）
Interface
When software is debugging and analyzing problems, LOG can be captured by USB virtual
DEBUG serial port. In use, you need to dial the switch S4 to the left. After the serial port is
inserted into USB, DB9 serial port is closed. Sending AT can only use the USB virtual serial port
mentioned in 5.2.