Test Steps - Ebyte E840-DTU (NB-02) User Manual

Chengdu Ebyte Electronic Technology Co,;Ltd

2.2.1 Test Steps:

1. Insert the SIM card into E840-DTU(NB-02) and connect it to the computer according to the above mentioned
methods. Open the Xcom, set the parameters of corresponding UART NO. and baud rate(only 9600 is available)and
turn on the UART.
2. When powered on with the power adaptor provided by us, POWER indicator on and NET indicator blinking
shows that the transceiver is ready.
3. Wait for 3s-5s to use the serial AT command to access the module.
4. Normal network process
Neul
OK
AT+CFUN=1
OK
AT+CIMI
recognize the card.
460012345678966
OK
AT+NBAND?
+NBAND:5
850MHz;
OK
AT+NCDP=139.199.157.166,2017//configure CDP server
OK
AT+NCDP?
+NCDP:139.199.157.166,2017
OK
AT+CGATT=1
OK
AT+CSQ
OK
AT+CGATT?
30s until it is 1, "1" means connection already.
+CGATT:1
OK
AT+CEREG?
+CEREG:0,1
OK
Note: Before the module joining the network, the IMSI of sim must be registered in the core network, or it cannot
register the network.
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd
// Waiting 3s after module is powered on
// configure cfun，"1" means open all the function of module
//read the current CDP server
//register network
//read the current signal intensity +CSQ:21,99 ；
// Inquire the network status-it takes times for module to join network. Query within
//Inquire network registration status, "1" means success;
//Inquire IMSI——Delay 3s to inquire to ensure the module can
// Read the current frequency, "5" means
E840-DTU(NB-02) user manual
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