Hello I’m trying to test the GSM modem on Putty. I have connected the GSM modem via BAFO cable to PC and using Putty for Serial Communication, But on powering up the GSM modem without any AT commands the GSM continuously responds with below mentioned responses. Require urgent help in this.
What does this mean ? Please help.
It means its restarting continously. I think there might be shortage of current. Make sure your power supply can source 4V @ 2A to VBAT pins of module.
I have connected 9V,1A adaptor to the GSM modem. Should increase the current rating of the adaptor or 1A is sufficient ? and I’m connecting to the Adaptor pin given on the modem. Please have a look at attached image. I also tried to power it up with 5V,1A adaptor but GSM was not powered up.