Hardware - Ebyte E840-DTU User Manual

Chengdu Ebyte Electronic Technology Co.,Ltd
2.Quick start

2.1 Hardware

Hardware for test are as follows：
Connect the power supply, antenna, SIM card, serial cable and other hardware before testing.
1. Enter the AT command mode and send +++ in the serial port assistant (except that +++ does not need to tick to send
a new line, other AT commands need to check to send a new line to be valid), you must send +++ command 3s Send
any other AT command (except for restarting the AT command) to fully enter the AT command mode.
2. After entering the AT command mode, use AT+CPIN to check the SIM card access:
For example: AT+CPIN
+OK=1
Indicates that the SIM card is connected and uses AT+CSQ to view the current signal strength:
For example: AT+CSQ
+OK=26
Indicates that the current signal strength is normal. If the response is 99, the current signal strength is abnormal. Check
whether the current antenna is connected or the surrounding base station is abnormal.
3. Access server, AT + SOCK = TCPC, 116.62.42.192, 31687 (parameters are separated by English characters comma,
separated by English characters between IP instructions), if it is SOCK1, SOCK2, SOCK3, need to be The front-end plus
enable command (see the AT command description section for details).
SOCK settings
For example: AT+SOCK=TCPC, 116.62.42.192, 31687
+OK
SOCK1, SOCK2, SOCK3 settings
For example: AT+SOCK1=0, TCPC, 116.62.42.192, 31687
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E840-DTU(4G-02E) User Manual
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