User guide

M80 EVB User Guide
M80_EVB_User_Guide_V1.2 - 43 -
5. Illustration
5.1. Turn on the module
1. Insert the plug of the 5V power adapter.
2. Switch S1 to ON state, Switch S2 to OFF state, Switch S3 to OFF state, and Switch S4 to
OFF state. The LED L1 on the EVB will be bright.
3. Press the K1 button (PWRKEY) for about 1 second. The LED L4 will be light and indicates
the module is in the working mode. When L4 is bright, the module begins running. Otherwise,
please check the circuit.
4. The LED L2 will be blinking at a certain frequency. The GSM working status of the module
can be judged by this LED.
Please refer to document [3] for the detailed network status indication.
5.2. Turn off the module
Press the PWRKEY button for about 1 second, the module will be turned off.
5.3. Emergency off
Press the EMERG_OFF button for more than 0.2 seconds, the module will be shut down
immediately. After that, the module can be restarted by pressing the PWRKEY button. Please note
that this operation is harmful to the whole module system and should only be done in emergency
such as failing to turn off the module through the PWRKEY button.
5.4. Communicate with the module
5.4.1. UART
1. Insert the plug of the 5V power adapter.
2. Connect PC and EVB correctly with USB to UART cable.
3. Open the HyperTerminal (AT command window) on PC. The location of the HyperTerminal
in windows XP is: START →program →accessory →communication →HyperTerminal.
Set appropriate Baud Rate (such as 115200 bps) and COM number which can be checked by
the Device Manager on PC.
4. Connect an antenna to M80-EVB with an RF cable.
5. Insert SIM card into the SIM1 card socket.
Quectel
Confidential