EC200U Module Resetting Constantly

Technical Subjects
1

I’m facing an issue where the EC200U module is constantly resetting. Currently, the module is configured with the following commands:

AT+CFUN=1,1
AT+QCFG=“usbnet”,1
AT+QICSGP=1,1,“VIVO”
AT+QNETDEVCTL=3,1,1

I can see that the module is connecting to the VIVO network, both indicated by the status LEDs and confirmed via terminal by sending the following commands which return what seem to be a valid IP address:

AT+CGPADDR
AT+CGCONTRDP

Despite successfully connecting, the module resets after a short period, losing communication with the terminal where I send the AT commands.

Is this resetting behavior normal?
Are there additional configurations I should perform on the module?

Thank you in advance,

2

The most common cause of spontaneous modem resets is an inadequate power supply.

3

Yes indeed!

I already double checked the supplies and monitored the supplies with an oscilloscope. There was no sign of a voltage sag during the module operation.

Furthermore i pulled off the supplies of the PCB which has the EC200 module and supplied the module straight with a variable voltage source. The behaviour of the module was the same!

So i kinda rejected already the posibility of power supply causing the resets.